- od ee ey Fear a5 on Fo pecs ite Sih NN * ht KK : o SS eee > ee a ars SS ~ —<. Foe Se eens See, ae a eae 5. oo, os _ oo Pan ore ee as AGA are ne | i ' S ‘ de BN Mi Haya at MN SY an . a . { ich - Kt u My . a y oN 7 See ee So ees INET pap pong eee earn arene HIN x6 ox i YUN ‘i i o ‘ PAO } RAN aa i u / St , 0 iN ee > } i Ni i i ‘ nN a \ SAIN \ RNA Oo RN CONE fe ' i Se re. anal = SSS ean Se ao Be ee rs ee > nan rete o Qs — ee a Se eae aa Fee i Sons ae epee Sane = so" re a ro = wr Bees nes as es os eae Sates os aces = ae, cunt oom ae een Zoe aa Se =~ Ky iH ih a . tO eS A oe — = =5 2 >> Pe ae 2>> Ee ae D> ee 2 EP DY TP». 4 = >> > DID»>» >>> > >>>» D> »»D yy? SS > >_>? 32> St DLP D> ED) > DP >> DDD 2 DD? DDD DD Bs JID 22> D> 2, = sd SLED DP YP Py >: >>> S comet p> >i 2 D>» D_ >> > DD) > SSE Dy Se > > >>> > PP» >> D> J SD» >D > >» »»>) PPPS DEPP LYS» PY PY IPP DY 5 >: >>> pe PDs» 7 >» PY IP >> DD > DS pet eret ret eiree a . yD > > Ds B >> PPE : BP ee Eee eu je? SS: P< vivy y) rm i WY y V Vv) ve woe a eee yey ese sau IU Jit 7, LAS | > ee = Bowe ID: Sete ess ie S. Be << >» 35 ¥; oS | oe! pe F | | Ate | & \{. 1 | 5 i i | FAP) ; all || FANGS ad y N viv i u Bee Sy se ee es 2 4 ANA NAN MAA i x Dy Sl >>. Dy SS >> Ss» p >» +> TLD >ye> DY > = 3 b> > DP a) we =o >> D> > > D>» »>y BD >>>> : >>» PDs D> BED E> D>» AD) > Wa yy > oo > Be DYE 2s 2D 22> » SD >> ) Be > 2 Re) ed 22>. » Sos >: ee x > 228 Ee SSS P Sh ee as eye D222 2\Vw >» 53 ee es es => > SS See Ss p> ce > > pb >>s > >>» “>> as : 22 ee oD SE hh oe ‘ AAS Uh IN NAN i — Giri ik NGI, PVs ] —w a, i ASIC) Wes vw A WENN DASA) ji 4} fi Fe Hee YIGS: ad ie ee we UNM) v A pyD >») >>» DLP PO» » ») » B 2p») 4 HIP ee Ss, eas) ee glee” py >») > DD D> ») >>» > VEO Ve: ew eg tet chess alesse archaea Nero e" 1 a ’ i (! SMITHSONIAN MISCELLANEOUS COLLECTIONS, VOL. Vi. **PVERY MAN IS A VALUABLE MEMBER OF SOCIETY WHO BY HIS OBSERVATIONS, RESEARCHES, AND EXPERIMENTS PROCURES KNOWLEDGE FOR MEN.’’—SMITHSON. WASHINGTON: Z PUBLISHED BY THE SMITHSONIAN INSTITUTION. 1867 a PHILADELPHIA: COLLINS, PRINTER, 705 JAYNE STREET. CONTENTS. Advertisement . ARTICLE I. Monocrapus oF THE DiprerRA or Nort AmERIcA. Pre- pared for the Smithsonian Institution. By H. Lorw. Part I. Edited, with additions, by R. OsTENSACKEN. April, 1862. Pp. 246, 3 wood-cuts and two plates. (141) ARTICLE II. Monocrapus oF THE DipteRA oF Nort America. Pre- pared for the Smithsonian Institution. By H. Lorw. Part II. Edited by R. OsrensacKeNn. January, 1864. Pp. 372, and five plates. (171) ARTICLE III. List or THE ConropterA oF NortH AMERICA. Pre- pared for the Smithsonian Institution. By Joun L. Leconte, M.D. Part I. March, 1863—April, 1866. Pp. 82. (140) ARTICLE IV. New Species or NortH AMERICAN COLEOPTERA. Pre- pared for the Smithsonian Institution. By Joun L. Lecoxte, M.D. March, 1863—April,1866. Pp. 180. (167) PAGE vil ‘aot i seinen d: atv vu ascot res ccna ¥ ‘dl ; pred, atice'l, Aboard) 4 aL SEO. Webi? A Sacha iar | ‘ 5 eich eat) ie! 2eaathhn, ig ¢ Detae dat, iia Ds soprady cril “uty ess = es ie a Sg oer ‘ i . ae : i | ‘ . oe i eee ss i ; _ me fe hae Po . ada sie swt Vs sett au) cr ti 4 i i ee abi 5296 snp OK 9 sea waa ae. ies ee Maa WU Utada RA): edad eee aD Saat bt id + i . at eee re » ms vi bh. id { pal ee IES fae ied ye (re Ef fe Heh Eel) ; . ADVERTISEMENT. THE present series, entitled ‘‘ Smithsonian Miscellaneous Col- lections,” is intended to embrace all the publications issued directly by the Smithsonian Institution in octavo form; those in quarto con- stituting the ‘‘Smithsonian Contributions to Knowledge.” The quarto series includes memoirs embracing the records of extended original investigations and researches resulting in what are be- lieved to be new truths, and constituting positive additions to the sum of human knowledge. The octavo series is designed to con- tain reports on the present state of our knowledge of particular branches of science : instructions for collecting and digesting facts and materials for research: lists and synopses of species of the organic and inorganic world: museum catalogues: reports of ex- plorations: aids to bibliographical investigations, etc., generally prepared at the express request of the Institution, and at its expense. The position of a work in one or the other of the two series will sometimes depend upon whether the required illustrations can be presented more conveniently in the quarto or the octavo form. In the Smithsonian Contributions to Knowledge, as well asin the present series, each article is separately paged and indexed, and the actual date of its publication is that given on its special title- page, and not that of the volume in which it is placed. In many cases, works have been published, and largely distributed, years before their combination into volumes. While due care is taken on the part of the Smithsonian Insti- tution to insure a proper standard of excellence in its publications, it will be readily understood that it cannot hold itself responsible for the facts and conclusions of the authors, as it is impossible in most cases to verify their statements. JOSEPH HENRY, Secretary S. 1. ( vii ) . ae Te iat : » } ' . ~ inl x i 1 iv. a " Ap. : bY a ad ¥ v i x ¢ ey 1" © ms Pen ien 8 ae sO ree ee i om ey en SMITHSONIAN MISCELLANEOUS COLLECTIONS. MONOGRAPHS OF THE ED PA Te Eee OF NORTH AMERICA. PREPARED FOR THE SMITHSONIAN INSTITUTION BY PLO BW PART I. EDITED, WITH ADDITIONS, BY R. OSTEN SACKEN. WASHINGTON: SMITHSONIAN INSTITUTION. APRIL, 1862. ADVERTISEMENT. THE present publication is the first part of a work on North American Diptera in process of preparation by Dr. H. Loew, of Meseritz, Prussia (one of the highest living authorities on the subject), undertaken at the especial request of the Smithsonian Institution. The materials have been derived principally from the collection of Baron R. Osten Sacken, of the Russian Legation in Washington, kindly intrusted to the author for examination. As explained by Dr. Loew, the work will appear in monographs of genera and fainilies, sufficient materials being at hand for illus- trating particular groups only, without relation to their systematic sequence. The Institution is under obligations to Baron Osten Sacken for editing the work, adding species described by Dr. Loew subse- quent to the reception of his manuscript, and for correcting the proofs. He has also added a monograph of the Cecidomyide, a group of much interest, and one to which it was considered of importance to call the early attention of investigators. JOSEPH HENRY, Secretary S. 1. Smirusonran Instrrorion, Wasuineton, March, 1862. ACCEPTED FOR PUBLICATION, JuLy, 1861. PHILADELPHIA: COLLINS, PRINTER. PREFACE. THE impulse to write on North American Diptera was given to me by Baron Osten-Sacken, who, first by sending me rich collections of such Diptera and finally by intrusting me with the greatest part of his own Diptera collected in North America, has enabled me to undertake this task, and, I hope, with some success. If my observations had been written in German, and published in any of our German Transactions, I shonld have had good reason to fear that the results would not become sufficiently known in North America, and would at all events be longer in obtaining access there. I resolved, therefore, to give them in English, and the Smithsonian Institution in Washington has added to the many proofs it has already given of an energetic furtherance of any studies relative to the natural history of North America, the liberal resolution to print my paper on North American Diptera at its own expense. If these papers, according to my intention, contribute to the increase of the study of this interesting order of insects, the principal thanks are due to the Institution and to Baron Osten-Sacken. As for the English text, I use, it is true, the assistance and advice of a friend who is well acquainted with the English language ; should, nevertheless, some roughness occur, I beg that it may be attributed to some supplementary alterations of my own, which circumstances prevented me from submitting tohim. I hope that shortcomings of this kind will be kindly over- looked, provided my descriptions be not deficient in precision and clearness. As I do not wish to remain the sole describer of N. A. Diptera, but hope soon to have many fellow-laborers, I take the liberty of pointing out briefly what, in my opinion, should be chiefly borne in mind in making and publishing such descriptions. Without any disposition to find fault with others, I believe I may be permitted some remarks, since for the last twenty vi PREFACE. years I have been occupied with the study of Diptera, and have been obliged to spend many hours in identifying (how often fruit- lessly!) the published descriptions. What renders the identi- fication of a very great number of the existing descriptions so very difficult, is the inexactness of the system used. For however natural the axiom may appear, that a new species is only to be located in the genus to which it really belongs, it is so little re- spected by most dipterological writers, that a long list could be made out of the instances in which they have sinned against it; in- deed the number of cases, in which a new species has been placed in a wrong family, is not small. It is not even always sufficient to place it in the right genus, for as soon as this genus is at all numerous in species, or the species are difficult to distinguish, the peculiar group of the genus to which the new species belongs should be pointed out, and if among the species already well known there are any very similar to those described, they ought of necessity to be specially mentioned. Consequently only those entomologists will publish new Diptera with success, who are completely acquainted with the system of this order of insects, whereas he who has a defective knowledge of it, far from advancing science, lays impediments in its way. The first task, then, for those who intend to come forth with satisfactory papers on the field of Dipterology, will of course be to acquire a most complete and sure knowledge of the system. As an introduction to the following essays of a more mono- graphic character, will be found a short sketch of the terminology of Diptera, as well as one of the dipterological system. The latter afforded me an opportunity of giving an outline of the North Ame- rican dipterological fauna, as far as known to me at present. An elaborate classification, equally detailed in all its parts, would require not only a larger amount of materials than I have at my disposal, but also, in order to be intelligible, a considerable num- ber of plates. I am compelled, therefore, to give up such an un- dertaking for the present, I hope, however, to be able to execute it at some future time. Although I trust that my short sketch will prove of some help to the student, by furnishing him occasion- ally a useful hint, or guiding him aright in general, it will be readily understood that in the prosecution of the study he will require more detailed information. I will, therefore, briefly indicate the works in which he may find it: Meigen’s Zwetfliigelige Insecten (7 vols. PREFACE. Vii 8vo.) is still the best work, exhibiting the dipterological system. In order to obtain information on the progress which science has made since Meigen’s age, this work may be followed by the study of Walker’s Diptera Britannica. The excellent plates by Mr. Westwood, and the systematic arrangement prepared for the most part by Mr. Haliday, give to this work a value not shared by Mr. Walker’s other publications. Next to these I would name Mr. Macquart’s Dipteres Exotiques, a work which, notwithstanding the errors in many of its figures and the carelessness of nearly all the descriptions, affords a great deal of useful information about the systematic arrangement of Diptera. After having acquired a general knowledge of the system by the study of these three works (or, if not familiar with the German language, of the two latter only), the best plan will be to con- centrate special study on one, or, at the utmost, on a few families of Diptera, and to consult the monographic papers relative to them, which are not difficult to procure, in order to obtain a com- plete and sure knowledge of characters within a more limited field. For even the smallest field will always be found wide enough to afford opportunities for the most interesting discoveries. This mode of obtaining a knowledge of the system capable of serving as a solid foundation to valuable publications is certainly a long and tedious one. It may be considerably facilitated, however, by the use of a well determined collection of typical specimens of all the families and genera, and it will afford me much pleasure to ex- tend all assistance in my power to those who may prefer the latter course; for both my wish to become better acquainted with the Diptera of North America and their desire to study the system might well coincide to supply the wants of both parties. I am always ready to send in exchange for well preserved N. A. Diptera forwarded to me (address Mr. H. Loew, Meseritz, Prussia) a reasonable equivalent in accurately named representatives of the genera. I should probably be obliged, in most cases, to send only European specimens, whereas, perhaps, it would seem more de- sirable to have N. A. species. But the number of species oceur- ring in perfect identity both in Europe and North America is so surprisingly large, and, besides, there are so many N. A. spe- cies exceedingly resembling well-known European ones, that the best foundation for the study of N. A. Diptera would be a com- plete collection of European species. It will be very useful to Vili PREFACE. both parties, if those who desire an exchange would remember that the smaller and smallest species possess the greatest interest for me, and if they would at the same time point out to me such families as they are chiefly desirous of knowing. Moreover, it will be necessary to agree about the way in which the equivalents might be forwarded. In case I receive no such direction, I shall suppose I am at liberty to send them by the kind intervention of the Smithsonian Institution at Washington, through which I beg all consignments intended for me may be forwarded. I have no doubt as to a successful issue to my labors, if I con- tinue to receive the same liberal and generous assistance from the Smithsonian Institution and from Baron Osten-Sacken which I have enjoyed from the beginning, especially if this commencement contributes to increase the number of those interested in the study, and ready to promote it by the communication of species taken by them, in the same way in which Messrs. Rob. Kennicott, 8. H. Scudder, A. S. Packard, Edw. Norton, and others, have furnished materials for the excellent paper of Baron Osten-Sacken on the Limnobide of North America. H. LOEW. MeseEnritz, 3 Oct. 1560. TABLE OF CONTENTS. PAGE Advertisement : : : : : : : iv Preface : : : 5 : 5 ; : Vv Table of Contents : 3 - : 3 x On the Terminology of Diptera : : : 5 : xi SKETCH OF THE SYSTEMATIC ARRANGEMENT OF DIPTERA : z if I. Nemocera : . . ; : : 5 II. Brachycera : . : . : 15 III. Coriacea : : : s : : 48 Oy tHE NortH AMERICAN TRYPETIDAE : : ; : 49 1. Extent of the family z : . 5 49 2. Its division into Zrypetina and Dacina ; : 51 3. Its natural character : ; é : : 52 4. Its relationship . ‘ c : : : 56 5. North American species hitherto recorded 5 c 57 6. Systematic arrangement of the species described, with their synopsis : ° : 5 . 61 7. Description of the species 5 ; - : 64 Appendix I 91 Appendix II 94 Appendix III 99 On THE Norta AMERICAN ScloMYZIDAE : ‘ . oe OS On tHE NortH AMERICAN EPHYDRINIDAE : , : AL Z9 Notiphilina - : : : a Tero Hydrellina < : : : eal 49 Ephydrina ° : ; ; : 258 x CONTENTS. PAGE Ox tHe Norta AMERICAN CEcIDoMYIDAE. By R. Osten Sacken =, Velie On the classification of the family “ - en nlide On its habits : : 5 5 ; cee mcla(o) On the North American Cecidomyiae at present known 186 Index 5 5 ; * ; Z z 5 DOT Additions and Corrections . % ; A : ‘ 220 ON THE TERMINOLOGY OF DIPTERA, Diptera have so much in common with other orders of insects that the terms applied to the latter, which I may consider as gen- erally known, may frequently be used for the former. I have there- fore merely to explain those terms which, on account of the peculiar organization of Diptera, are either applied solely to the insects of this order or are used in a more or less modified sense. It is well known, how little the various authors agree in the choice of these terms, and how many of them seem to find pleasure in departing as much as possible from the terms used by their predecessors. This is a great evil, aggravating the difficulty of understanding Dipterological publications, and impeding the progress of Dipter- ology. It would take too much space to expiain all the terms used by different authors, and I confine myself to those only which seem the most necessary and which I have used in this publication. The following considerations have guided me in their choice. [ think it a duty of a later author to accommodate himself to the usage of his predecessors, especially those who have written stand- ard works, and at the same time to reconcile them as much as possible where they differ from each other. The indispensable innovations should be introduced only gradually and in conformity with the established usage, since in such matters an agreement about the terms chosen is more important than the mode of selecting them. Meigen, Wiedemann, and Fallen in earlier times, Zetter- stedt and Macquart more recently, have in that respect a claim to our attention. It has therefore been my object to assume the position of an arbiter between them, and to avoid such terms as depart entirely from the adopted usage, except in cases in which I might differ so much from my predecessors as to become unintel- ligible if restrained by their terminology. The head has a hinder plane opposite to the thorax, called occi- xil ON THE TERMINOLOGY OF DIPTERA. put (occiput); that region of it lying over the junction of the head is the nape (cervix). The part of the head which reaches from the antenne as far as the occiput and is limited laterally by the compound eyes, is the front (frons), the upper part of which is the crown (vertex), the limit between the front and the occiput having the name of vertical margin (margo verticalis). The middle of the front being often of a more membranaceous substance and sometimes differing in color from its borders, is called the frontal stripe (vitta frontalis), On the crown, there are the simple eyes (ocelli), being usually three in number and forming a triangle, sometimes on a sharply defined triangular space, the ocellar trian- gle (triangulum ocellare). Most of those Diptera which undergo their metamorphosis within the larva-skin possess, immediately above the antenne, an arcuated impressed line, which seems to separate from the front a small piece usually of the form of a cres- cent, the frontal crescent (lunula frontalis). The impressed line itself, which continues over the face nearly as far as the border of the mouth, is called the frontal fissure (jissura frontalis). It owes its origin to alarge bladder-like expansion which exists at this place in immature imagos, and which helps them in bursting the pupa case. The frontal fissure of course is the true anterior limit of the front, and the frontal crescent in fact belongs to the face; however, on account of its usual situation, it is commonly considered as a part of the front. In many genera the eyes of the males meet on the front, so as to divide it into two triangles, the superior of which is ealled the vertical triangle (tr¢angulum verticale), the inferior the anterior frontal triangle (tréangulum frontale anterius), or simply the frontal triangle (triangulum frontale). The anterior portion of the head reaching from the antenne to the border of the mouth or oral margin (peristomium) is called the face (facies). In most Diptera it is divided into three parts adjoining each other, the limits of which depend on the situation which the frontal fissure, continued to the oral margin occupies in the developed imago; the form and mutual proportion in size of these parts are of the highest value in the classification and distinction of the species of Diptera. Beneath the antenne there are in many Diptera longi- tudinal holes for their reception, the antennal furrows (fovee an- tennales); the antenne lie in them while the insect is still in the pupa case, sometimes even after its exclusion. That part of the head which lies on the side beneath the eyes is the cheek (genq). ON THE TERMINOLOGY OF DIPTERA. xili The compound eyes are sometimes encompassed in a larger or smaller part of their circumference by a ring, somewhat swollen, and separated more or less distinctly from the remainder of the surface of the head; it is called the orbit (orbita), the successive parts of which may be called the anterior (orbita anterior sive fa- cialis), inferior (inferior s. genalis), posterior (posterior s. occipt- talis), superior (superior s. verticalis), and frontal (frontalis) orbits. An orbit is also often spoken of, where no ring is distinctly set off from the rest of the surface of the head; in this case a distinct color or some peculiar structure mark the nearest surroundings of the eyes. The oral parts of Diptera, destined for sucking, are called the sucker or proboscis (proboscis). They are either inserted at the end of a more or less cylindrical prolongation of the head, called the snout (rostrum), or project from a wide aperture often occupy- ing a great part of the under surface of the head, called the mouth hole (cavitas oris), The common, fleshy root of the oral parts is connected by a membrane with the border of the mouth. This membrane often has a fold, sometimes of a quite horny substance, and is then called the clypeus (elypeus s. prelabrum); it is either entirely concealed by the anterior border of the mouth and is then usually movable, or it projects over it as a ridge and is then usually immovable. The largest of the oral parts in most Diptera is the fleshy under lip (/abéwm), consisting of the stem (st/pes) and the knob (capitulum labii) formed by the two suctorial flaps (ladella), Besides the under lip, the palpi (palpz) are most perceptible and must be noticed in the description of the species. The remaining oral parts are generally rather small and stunted, having the form of bristles or horny lancets; they are considered as being the tongue (lingua), under jaws (mazxille), upper jaws (mandibule), and up- per lip (labrum), the latter shutting the under lip from above. These parts are not easily applicable in distinguishing species. The thorax of Diptera as well as that of other insects consists of three segments, the prothorax, the mesothorax, and the meta- thorax. But in the order of Diptera the development of the meso- thorax exceeds so much that of the two other portions, that it forms by far the largest part of the whole thorax, and in the description of Diptera is exclusively designated with the latter name, while other names are given to the prothorax and metathorax, when some particular part of them is to be characterized. The protho- xiv ON THE TERMINOLOGY OF DIPTERA. rax being generally very little developed, sometimes forms a neck- like prolongation which bears the head, and is then called the neck (collum). Sometimes the fore corners of the mesothorax or the shoulders (kumer?) are covered by a lobe of the prothorax (/obus prothoracis humeralis), distinctly separated from the mesothorax ; but it is not unusual for this lobe to be so soldered to the meso- thorax that it is not possible to discover a distinct limit between them, except in general, by their color or hairs; it is then called the shoulder callosity (callus humeralis). The prothorax sometimes also applies closely to the anterior border of the mesothorax, and has then the name of collar (collare), The mesothorax frequently has a transverse furrow (sutura transversalis) crossing the middle of its upper side and ending on each side 4 little before the base of the wing; its presence or absence as well as its form furnishes characters important in the classification of Diptera. On each side of the breast—the breast side (plewra)—there is beneath the shoulder a spiracle (st¢gma prothoracis) still belonging to the pro- thorax. To the back of the mesothorax applies the scutcheon (scutellum), separated from it by a furrow. Beneath the scutellum a part of the metathorax is to be seen, called metanotum, generally descending obliquely, often very convex, and on each side with a more or less inflated space, called the lateral callosity of the meta- notum (callus metanoti lateralis). The poisers (halteres) have their origin beneath this callosity, and before either of them we see the spiracle of the metathorax (stigma metathoracis). The mem- branous covers which in many Diptera are found above this spi- racle, have the name of covering scales (tegule).* The abdomen is the third of the three principal parts of the body, but we usually so call its upper side only, the name of belly (venter) being given to the under side. The segments of the ab- domen are of course, as in the other orders of insects, counted from the front to the back; but the anterior ones are often soldered together, while the posterior ones are stunted, and by their con- cealed situation withdrawn from the eye; much caution is therefore required in counting them. The statements about their number are frequently rather arbitrary and conventional, and often require an explanation. At the end of the abdomen we see in the male the appendages destined to take hold of the female in the copula * Some authors call them squame.—O. S. ON THE TERMINOLOGY OF DIPTERA. XV (hypopygium), in the female the organ for laying the eggs (ov- posttor); the former, if they have the form of pincers and are not bent under the belly, are called the pincers (forceps), the latter according to its form either the borer (terebra) or the style (stylus). Both organs are of the greatest importance in the distinction of species in many families, and their structure being generally very complicated and varying much in different families, deserves a most attentive study. The newration of the wings of Diptera forms so essential a foun- dation of their systematical arrangement and is so useful for the distinction of species, that its thorough knowledge and a scrupulous and accurate denomination of its single parts and of their mutual arrangement is quite indispensable. Our first and most important task will be to ascertain which parts of the neuration of the wings correspond to each other in the different families, since this is the only way to obtain a terminology in which corresponding things are designated by the same names, and which, therefore, is not liable to misinterpretation. At a first and superficial glance, the neuration of the wings shows so different a structure in the various families of Diptera, that it seems impossible to reduce ittoacommon type. But, on acloser examina- tion, we find that we can make out without much difficulty a common type existing in its greatest simplicity and plainness in the Muscidx. The framework of the whole neuration of the wings is formed by the longitudinal veins (vene longitudinales), which are connected with each other by the transverse veins (vene transverse s. venule). The longitudinal veins spring from four trunks, issuing from the base of the wings; the first and fourth tranks being the least de- veloped, the second and third must be taken for the main trunks, and consequently the longitudinal veins originating from them, for the main longitudinal veins of the wing. To the anterior of these two main trunks belong three longitudinal veins, the foremost of which runs first parallel to the anterior border of the wing and joins it at a greater or less distance from the tip of the wing; it is called the first longitudinal vein (vena longitudinales prima). The second longitudinal vein proceeds from the first generally be- fore the middle of the wing, and reaches the anterior border of the wing nearer to the tip. In a similar way the third longitudinal vein has, again, its origin from the second. ‘To the second main trunk also belong three longitudinal veins, which are counted xvi ON THE TERMINOLOGY OF DIPTERA. from the front to the back, and are called the fourth, fifth, and sixth longitudinal veins. The hindmost vein of the anterior main trunk and the foremost vein of the posterior main trunk, 7. e. the third and fourth longitudinal veins, are connected by a transverse vein situated about the middle of the wing and called the small or mid- dle transverse vein (vena transversa minor s. media). Using this transverse vein as a starting-point, we cannot easily have any doubt about the position of each of these six main longitudinal veins. The remaining neuration takes place in the following way: The first of the four trunks emits a usually rather stout vein, forming the anterior border of the wing; it either runs round the whole border of the wing, attenuating a little towards its end, and is called the marginal vein (vena marginalis), or it only reaches as far as the fourth or third, sometimes even the second or first longitudinal veins, and is then generally called the costal vein (vena costalis s. costa); both these expressions can be used as identical without any fear of incorrectness. The costal vein is sometimes interrupted in one or more places, thus forming a number of successive portions, a structure most characteristic in several families. Besides this vein, a second one proceeds from the foremost of the four trunks, which, from its being frequently absent, is not counted with the other longitudinal veins, but is called the auxiliary vein (vena auzx- tliaris); not far from its base, it is connected by the transverse shoulder vein (vena transversa humeralis) with the costal vein. A total or partial absence of the auxiliary vein, its structure, and the peculiarities of situation which it has relatively to the first longi- tudinal vein, are very characteristic marks for the distinction of families and genera. The first and second longitudinal veins are usually simple, the third being frequently forked; this furcation arises from its emitting beyond the small transverse vein an anterior branch, which gene- rally runs to the border of the wing between the second and third longitudinal veins, and is therefore called the anterior branch of the third longitudinal vein. Both branches together form the fork of the third longitudinal vein, and that part of this vein which lies between the small transverse vein and the point of forking of both branches is called the handle (pedunculus) of this fork. Some- times the foremost branch of the third longitudinal vein is con- nected with the second longitudinal vein by a transverse vein, or it runs into the second longitudinal vein instead of running to the ON THE TERMINOLOGY OF DIPTERA. xvii border of the wing, and thus has the appearance of a transverse vein. In most Diptera there is no other connection between the third and fourth longitudinal veins except the small transverse vein, and we can cross the wing between the third and fourth longitudinal veins in its whole length without meeting another vein but the small transverse vein. But in some families the fourth longitudinal vein, abandoning towards its end its former direction, turns to the third longitudinal vein and reaches it either at its end or a little before it, constituting thus a second connection: there is a rarer case when that connection is effected by a transverse vein placed distinctly on the fourth longitudinal vein. A third connection between the fourth longitudinal vein and the anterior main trunk is formed in some families in the neighborhood of the base of the wing; often there is only a transverse fold rnnning obliquely from the fourth longitudinal vein to the first; in some families it incras- sates into a transverse vein. The three longitudinal veins belonging to the second main trunk usually begin to diverge quite near the base of the wing; the hind- most of them, 7. e. the sixth longitudinal vein, is often distinctly seen as the continuation of the common trunk, while the two ante- rior ones uniting with their bases seem to form a kind of loop which touches the main trunk only at one point. As frequently, the fifth longitudinal vein represents a distinct continuation of the main trunk; in some families all the three longitudinal veins appear in equal distinctness as its branches. Between the fourth and the fifth longitudinal veins there are in general two transverse veins, which divide the space of the wing, included by the fourth and fifth longitudinal veins, into three parts. The first of these transverse veins is the anterior basal transverse vein (vena transversa basalis anterior s. venula basalis anterior), the absence of which is charac- teristic for some families; the second is usually the longest trans- verse vein of the wing and is of the highest systematic value; it is called the posterior transverse vein (vena transversa posterior s. venula posterior). Not unfrequently another vein starts from its middle, running to the border of the wing; it cannot be considered as a longitudinal vein, and is called the anterior intercalary vein (vena intercalaris anterior). It must not be confounded with a branch emitted in some Diptera from the posterior side of the fourth longitudinal vein before its tip. B XVili ON THE TERMINOLOGY OF DIPTERA. Near the base of the fifth longitudinal vein rises the posterior basal transverse vein (vena transversa basalis posterior s. venula basalis posterior), usually a short transverse vein, running to the sixth longitudinal vein, but frequently meeting it only in a later part of its course at a very acute angle, or even reaching the bor- der of the wing, without having met that vein; in all these cases it divides all the space of the wing lying between the fifth and sixth longitudinal veins into two parts. In several families there is, immediately beyond this transverse vein, another vein, the posterior interealary vein (vena ¢ntercalaris posterior), which proceeds from the fifth longitudinal vein and runs to the border of the wing; sometimes it meets the fifth longitudinal vein before reaching the border. In that part of the wing which is behind the sixth longitudinal vein, are spread the branches of the hindmost of the four trunks ; it is entirely wanting in many Diptera, and exists in most of them only in a rudimentary state; therefore generally only one branch, or at the utmost two weak ones, not reaching the border of the wing, are perceptible; they are called the axillary veins (vere ax- allares). Where the hindmost trunk is well developed, these veins become complete longitudinal veins; they best preserve the same name, but may be numbered as the seventh, and, where two exist, as the seventh and eighth longitudinal veins without any fear of misinterpretation. In the case of such a great development of this trunk, the foremost of the veins belonging to it is generally connected near its base with the sixth longitudinal vein by a trans- verse vein. It results, from the foregoing exposition, that the anterior part of the wing is divided by the three longitudinal veins belonging to the anterior main trunk, and the posterior by the three longitudi- nal veins belonging to the posterior main trunk, each into three sections, an exterior one, a middle, and an interior one, while the three sections of the anterior part of the wing are separated from those of the posterior part by a middle stripe or band which ex- tends from the base of the wing to its tip. It would be an easy task to invent fit names for these principal parts of the surface of the wing, from which convenient expressions would result for their single parts or the cells of the wings. But it seems to me that the introduction of such a new nomenclature would hardly promote our principal end, the agreement of authors in the use of termino- ON THE TERMINOLOGY OF DIPTERA. xix logical expressions, since it is not so much the nature of the re- ceived terms as the consent in their application which we must aim at. I therefore think it most advisable to retain such names for the denomination of the wing-cells, as are already in general use. But in adopting these names I cannot but mention that many of them do not seem to be well chosen, and that I accept them only with the intention of bringing about a terminology generally agreed upon. I shall, therefore, call the cells belonging to the first section of the wing the costal cells (cellule costales), those of the second the marginal cells (cellule marginales), and those of the third the sub- marginal cells (cel/ulee submarginales). The latter are of the greatest importance for characterizing families and genera, as well as for the distinction of species. When the second and third longitudi- nal veins are simple, and the third anterior section is consequently undivided, there exists only one submarginal cell; but when the third longitudinal vein has a branch running to the border of the wing, we count two such cells, an anterior and a posterior one; when the anterior branch of the third longitudinal vein is also connected with the second longitudinal vein by a transverse vein, the number of submarginal cells amounts to three, among which that, formed by the inner part of the anterior submarginal cell, is called the interior submarginal cell; when the anterior branch of the third Jongitudinal cell assumes the form of a transverse vein running to the second longitudinal vein, only an interior and an exterior submarginal cell are distinguished. Among the existing names, none is well applicable as a common denomination either to the cells belonging to the middle of the wing or to those of each of the two first sections of the posterior part of the wing; I am compelled, therefore, though not without reluctance, to give up the application of such names. Among the cells of the portion just mentioned, there are three that have gene- rally been too little noticed in the description of the neuration of the wing. Their different forms give very good characters, the more so as, on the whole, the differences, which the neuration shows in the neighborhood of the base and costal border, have always a higher systematic value than those occurring near the tip or the posterior border of the wing. Those three cells are placed nearest to the base of the wing; the first of them belongs to the middle of the wing, and reaches as far as the small transverse XX ON THE TERMINOLOGY OF DIPTERA. vein; the second belongs to the first section of the posterior part of the wing, and extends as far as the anterior basal transverse vein; the third belongs to the second section of the same part of the wing, and joins the posterior basal transverse vein. These three cells may, in general, be called the three basal cells (cedlulze basales). The foremost of them is generally much longer than the two others, a proportion which is usually indicated by the expression of ‘‘one large and two small basal cells ;” against this mode of ex- pression nothing can be objected, since it implies no uncertainty. It is, however, a little puzzling to invent a convenient term, when the posterior basal transverse vein, instead of running to the sixth longitudinal vein, assumes the character of a longitudinal vein, and runs to the border of the wing, so that the hindmost basal cell joins the border of the wing. Not only in this case, but also when the hindmost basal cell, though closed, is distinguished from the second basal cell by a much more considerable length, it is usually named the anal cell (cellula analis), and then, consequently, two basal cells are considered to be present. Badly chosen as the term ‘Canal cell’? may be, it is, nevertheless, so settled that it will be difficult to remove it by the introduction of a more convenient one. In certain families the great and very symmetrical development of the three basal cells is characteristic; they are then called the ternated cells (cellule ternatx), which term, though expressive of the thing, seems to be superfluous. One of the most important cells is that belonging to the first section of the posterior part of the wing, and extending from the anterior basal transverse vein to the posterior transverse vein, and bearing the little transverse vein on its anterior margin; it is generally called the discoidal or discal cell (cellula discotdalis). When the anterior basal transverse vein is wanting, which is characteristic in many families and genera, this cell coalesces with the second basal cell, which then must be considered as a part of the discoidal cell; if the posterior trans- verse vein has disappeared, there is no discoidal cell at all. In those Diptera which possess the anterior intercalary vein, sometimes the part of the posterior transverse vein situated before or behind this intercalary vein is wanting, and in that case the existence of a diseal cell is granted, which, in the former instance, is considered as anteriorly opened, in the latter, as posteriorly opened. The second cell of the middle of the wing opening in its border, and those of the two first sections of the posterior part of the ON THE TERMINOLOGY OF DIPTERA. xi wing, are called the cells of the posterior margin, or posterior cells (cellule posteriores), and numbered as first, second, etc., beginning with that which belongs to the middle of the wing, and is limited at its base by the small transverse vein. It is evident that in all Diptera there are really only three posterior cells. They exist in their typical simple form in the Muse¢dex. The first of them be- longs to the middle of the wing, the two others to the first and second section of the posterior part of the wing. The first is usually subject to no partition, but is sometimes closed before reaching the border. The second is frequently divided in two portions by the presence of the anterior intercalary vein, and this happens whenever the fourth longitudinal vein emits a hind branch before its end; it even forms three portions when this branch exists. along with the intercalary vein. In the genera having a posterior intercalary vein, a bipartition of the third posterior cell occurs. Though it would be very convenient to speak in all cases of only three such cells, and to point out in the way indicated the mode of their further partition, yet the ruling usage does not admit of this, but counts all these portions as successive posterior cells, whence their number sometimes amounts to six. When the second posterior cell and the discoidal cell are united in conse- quence of the absence of the posterior transverse vein, the cell formed in this way retains the name of second posterior cell. The cells belonging to the third section of the posterior part of the wing are not, usually, completely separated from each other, and then are frequently termed the false cells (cellule spurix); a better term for them might be that of axillary cells (cellule axil- lares). They are numbered in the direction from the sixth longi- tudinal vein towards the posterior angle of the wing. As for the expressions costal border, tip, posterior border, pos- terior or anal angle of the wing, they are understood by everybody. The posterior angle is terminated by the axillary incision (¢neiswra axillaris) towards the base of the wing. The wings of many Dip- tera are provided with a lobiform appendage, the alar appendage (alula), reaching from the axillary incision to the innermost base ; it must not be confounded with the covering scale that lies above the poisers, and which has often been called by the same name. In order to understand a very intricate neuration and reduee it to the simple type, we must take care not to assume for parts of the same main vein all those ramifications which run in one direc- XXxil ON THE TERMINOLOGY OF DIPTERA. tion. As threads loosely drawn up in a frame, when strongly strained by transverse threads of different length, must necessarily adopt an angular direction, so do longitudinal veins, in consequence of a varied situation and the length of the transverse veins. The outline of the wing, the length of the longitudinal veins, the situ- ation and length of the transverse veins, as well as the area of the two membranes of the wing, stand in such a relation to each other that the wonderful effect of their hardening after the exclusion of the insect will be a surface more or less even, but in every case fit for the performance of flight, the main agents of which are appa- rently the anterior part of the wing, as being more stout and rigid, and its posterior part, which, being in most cases united with the former by the small transverse vein only, is more movable, and acts as an inclined plane, propelling the insect during the motions of the wings both up and down. It is in such genera only as Syritta, Bombylius, Nemestrina, the habits of which require not so much a rapid locomotion, as a constant hovering over a spot, that a multiplied connection of the anterior and posterior part of the wing by transverse veins restrains the mobility of the posterior part of the wing,-and renders its propelling effect less sensible. A correct understanding of a very intricate neuration is in many cases by far not so difficult as that of a very incomplete one. The latter will be best obtained by observing, that in such wings the three anterior trunks of the veins are not only incompletely de- veloped, but also crowded together on the anterior part of the wing, an uncommonly large space being allotted to the fourth trunk. In this way, the striking narrowness of the anterior and middle parts of the wing and the extraordinary dilatation of the posterior part, find their explanation. Sometimes a closer exami- nation of the surface of the wing will yield a useful result by our observing the different kind of hair peculiar to the veins, and which remains, though the veins themselves are wanting. All Diptera with very incomplete neuration are bad fliers, since the greater flexibility of the posterior part of their wings can but imperfectly compen- sate the propelling effect of this part when sustained by a stronger neuration. The legs of diptera, like those of the other orders, consist of four principal parts, called the hips (core), thighs (femora), shanks (¢biz), and feet (¢ars’). The hips consist of two joints; the second, smaller one, is called trochanter. The feet are gene- ON THE TERMINOLOGY OF DIPTERA, Xxlli rally five-jointed ; the first joint is called metatarsus. At the tip of the last joint there are two claws (wngues), and under each of them there is generally a membranaceous appendage called pul- villus. Besides these appendages, many families have between them a third single appendage of similar structure, which is called empodium; in other families this organ is bristle-like, or altogether wanting. I have little to say about the expressions for the different cha- racters of the surface and the clothing of the parts of the body of Diptera; I will observe only that the gradations hoary ( pruinosus), dusted (pollinosus), mealy ( farinosus), or pubescent ( pubescens), hairy (pdlosus), bristly (setosus), ete., in their application must be judged more according to a relative than an absolute scale, viz., in a family that has coarse hair the same is called hairy, which in another with fine hair is termed bristly, and so in similar cases. If we were not willing to do so, expressions would fail to point out the existing differences. ~ XXIV ON THE TERMINOLOGY OF DIPTERA. 1. Wing of Ortalis. a. Transverse shoulder-vein (vena transversa humeralis). 6. Auxiliary vein (vena auxiliaris). c, d, e, f, g, and h. First, second, third, fourth, fifth, and sixth longitudinal veins (vena longitudinales prima, secunda, tertia, quarta, quinta, et sexta). z. Small or middle transverse vein (vena transversa minor s. media). k. Hinder transverse vein (vena transversa posterior). l,m, n, 0. Costal vein (vena costalis). p. Anterior basal transverse vein (vena transversa basalis anterior). q. Posterior basal transverse vein (vena transversa basalis posterior). ry. Rudiment of the fourth trunk. s. Axillary incision (incisura axillaris), A, B, and C. First, second, and third costal-cells (cellulae costales prima, secunda, et tertia). D. Marginal cell (cellula marginalis). £. Submarginal cell (cellula submarginalis). #, G, and H, First, second, and third posterior cells (cellule posteriores prima, secunda, et tertia). I. Discal cell (cellula discoidalis). K. First or large basal cell (cellula basalis prima s. major). I. Second basal cell, or anterior of the small basal cells. M. Third basal cell, or posterior of the small basal cells. W. Anal or axillary corner of the wing (angulus analis s. axillaris). O. Alar appendage (alula). 2. Wing of Empis. ¢, Anterior branch of the third longitudinal vein (venae longitudinalis tertiae ramus anterior). w. Anterior intercalary vein (vena intercalaris anterior). 3. Wing of Dasypogon. t, Anterior branch of the third longitudinal vein. wu. Anterior intercalary vein. v. Posterior intercalary vein. Pe Pee A OF NORTH AMERICA. I. ‘ SKETCH OF THE SYSTEMATIC ARRANGEMENT OF DIPTERA: WITH AN ENUMERATION OF THE GENERA HITHERTO RECORDED AS FOUND IN NORTH AMERICA. , Our knowledge of the Dipterological Fauna of North America has lately made rapid progress by the great attention paid to it by Baron Osten Sacken during his residence in Washington. As a preliminary to further investigations, he prepared, in 1858, for publication by the Smithsonian Institution, a Catalogue of the then described North American Diptera, which had the great and essential merit of nearly entire completeness. It cannot but be considered as a wise precaution that he did not enter upon a criti- cal examination of the published species, as he well understood that such an examination could only be the work of the combined efforts of many persons, and the fruit of a long toil of years, and that consequently undertaking it would have indefinitely retarded the publication of such a catalogue, so desirable for the advance- ment of North American Dipterology. The impulse caused by Baron Osten Sacken’s Catalogue is already evident, and it has proved a welcome and valuable assistance to every one attempting amore thorough study of North American Diptera, by an intel- ligible arrangement of the already published species, not only sparing him much laborious research, but also giving him the cer- tainty of not overlooking a species already described. But although this Catalogue presents a survey of all papers hitherto published, and of the contributions of each author, it does not, and according 1 2 DIPTERA OF NORTH AMERICA. to its plan could not, afford a survey of the North American Fauna Dipterologica, corresponding to the present state of sys- tematic Dipterology; on the contrary, sketching such a survey is one of the tasks to which it looks forward to as one of the first fruits of its publication. It would be quite impossible to draw such a systematic survey of the. hitherto known North American Diptera from the Catalogue itself, since it comprises the publica- tions of the authors of different times and countries, of writers who had the most different systematic ideas and points of view, and since, in consequence of its plan, it could not but include such papers as are devoid of any solid knowledge of systematic Dipter- ology—to which, above all, the descriptions of Rob. Desvoidy, and, in a still higher degree, those of Mr. Walker belong. Conse- quently a survey of those families and genera which North America really possesses, is to be acquired in no other way than from the in- spection and careful investigation of the species themselves. The rich collections of Baron Osten-Sacken have enabled me to examine a number of North American species sufficient to allow me to ven- ture an essay of the kind indicated. In this survey I have adopted for the North American Fauna the same area as that of Baron Osten Sacken’s Catalogue, the materials upon which I establish my work corresponding to this area. Still it cannot be denied, as far as I am able to judge, that this area, in its southern extent, reaches beyond the limits of the North American zoological province. In order to give a true, though of course not complete sketch of the North American Dipterological Fauna, I can, besides such species as I know by my own inspection, have regard only to those the systematic location of which is in no way doubtful. For many years past all Diptera have been divided into two large sections, Memocera and Brachycera. In the Diptera of the first section the antenna, having the fundamental form of a thread, consists of many joints, two of them being called the joints of the scapus, the following those of the flagellum. The latter are all of the same structure, although this structure varies in different spe- cies. The first joint of the flagellum, 7. e., the third of the whole antenna, is never so distinguished in size or structure that one’ might consider the succeeding joints as its accessorial appendages, nor is the connection of the joints (with the exception of the Bidi- onide, Mycetophilide, and a few others) such as might lead us to DIPTERA OF NORTH AMERICA. 3 consider them as one, divided into several annuliform segments. In the second section, the Brachycera, the two joints of the scapus are likewise separated; the third joint, or first of the flagellum, usually differs by its remarkably developed size and its anatomical structure, causing it to be considered as a sensorial organ about the nature of which entomologists are not yet agreed. The suc- ceeding joints of the flagellum are much reduced in size, generally very few in number, and often of unequal number in nearly related genera, or even in species of the same genus. They even disappear entirely in some genera (e. g., in Scenopinus). If they are extant, they have usually the form of a style or bristle, the position of which, according to its nature, is in fact apical, although, from the development of the under side of the third joint, the bristle often seems inserted on its back, or even, in some instances, in the immediate vicinity of the base itself. In the genera, in which the first joint of the flagellum is not of a remarkable size, the following joints are generally more numerous, and either all or the greater part of them share the peculiar organization showing their function to be that of a sensorial organ. They are applied at the same time so closely to the first joint of the flagellum, that we are compelled to consider all of them together as one, divided into several segments, or the terminal one as a style or bristle of a single joint, formed by the other joints of the flagellum. Consequently the essential difference between the sections Vemocera et Brachycera is this, that in the latter the number of joints of the flagellum is not only smaller, but also that the lower joint, sometimes a few joints, always the lower ones, rarely all, have a more distinct de- velopment, and at the same time a peculiar anatomical structure undoubtedly proving their function to be that of a sensorial organ. It cannot be denied that those families of Brachycera in which several of the joints of the flagellum are so soldered together as to form one compound and annulated mass, stand nearest to the section of Nemocera, and that amongst these families the Xylopha- gide must be placed immediately on the limit of both sections. It is more difficult to point out a family of Nemocera, which comes nearer to the section of Brachycera than all the others; in general the families of Rhyphide and Libionide may be considered as those to which this station must be assigned. It is a fact that some dis- coveries made in modern times have obliterated to a certain degree the sharpness of the limit which was considered to exist between 4 . DIPTERA OF NORTH AMERICA. the sections of Nemocera and Brachycera. The fact known long ago, that in some genera of Stratiomyde and Tabanide the joints of the flagellum not being closely compressed, do not form a com- pact joint, has been rather neglected in this respect, perhaps be- cause the Stratiomyde and Tabanide, by their whole organization, are rather remote from the Nemocera, and have so strikingly pecu- liar characters as individual families, that their comparison with the Nemocera has scarcely been thought of. The case was dif- ferent when a similar structure was observed in the family of Xylo- phagide. After I had myself first pointed out the genera Hlectra and Chrysothemis, discovered by me in Prussian amber, Mr. Hali- day found the still more surprising North American genus Rachi- cerus. I shall have hereafter to mention a second North American genus of Xylophagide, which has the flagellum of the antenne not annulated, but really many-jointed. All these facts, however, are not sufficient to compel us at present to give up the separation of the Nemocera and Brachycera. Many authorities have likewise objected to uniting under the head of Brachycera all those families which cannot be referred to the Nemocera, especially and with the fullest reason, to the union of the Hippoboscide with the other Brachycera, since both the history of their development and their internal and ex- ternal anatomy essentially differ from them. They can only be considered as a third section, co-ordinate to the Nemocera and Brachycera, and having the same systematic value, and may be . named Coriacea, or they may be opposed to the other two together as equivalent, and consequently be comprised under the name of Eproboscidea, that of Proboscidea being left to the two other sec- tions. I intend to follow the first of these two arrangements. Of the families which I shall hereafter enumerate as belonging to the Brachycera, the Phoride alone have occasioned some doubts about their title to this place, founded, if I judge correctly, on the abnormal structure of their antennee; these are considered as one-jointed, with the terminal bristle consisting of several joints. Judging by the anatomical structure, I for my part am unable to see in the joint, which is pre-eminently developed and forms the main body of the antennse, more than the first joint of the flagel- lum, its peculiarity arising from the soldering together and stunting of the two joints of the scapus, the covering of which is moreover less horny than in the other families of Brachycera. This differ- OULICIDAE—CHIRONOMIDAE. ‘5 ence, surprising as it is, does not seem to me to have systematic importance enough to require a separation of the Phoride from the remaining Brachycera, and the less so as similar deviations, though not nearly of so striking a nature, also occur in other fami- lies. I mention, as an instance, the remarkably stunted second joint of the antenne in the genus Haltertcerus Rond. among the Doli- chopide, I. NEMOCERA. Fam. I, CULICIDAE. Charact.—Ocelli none. Thorax without transverse suture. Costal vein continued round the margin of the wing, fringed with scales; veins in their last subdivisions more than six in number. This family, rich in species, comprises only a small number of genefa. As such, the old well-known genera CULEX, AEDES, ANOPHELES, and CorerHra are to be named first, being those among which Meigen has distributed the European species. ‘To them may be added the genera Mrcaruina, PsoropHora, and Sa- BETHES, separated from Culex by Rob. Desvoidy, the two last being scarcely tenable, whereas Megarhina is acknowledged as holding good.. The genus Mocutonyx, established by me, is very near to Corethra, differing, however, by the abbreviation of the first tarsal joint. Species of the genera CuLtrx and ANOPHELES occur over all parts of N. A., whereas Mrecaruina and PsoropHora are only represented by single species belonging, as it seems, more to the South, as is also Corerura by OC. punctipennis Say. Fam. II]. CHIRONOMIDAE. Charact.—Ocelli none. Thorax without transverse suture. Wings with- out vein along the posterior margin ; costal vein ending near the tip of the wing. This family is not much richer in genera than that of the Culie¢de, but far more so in species. It contains the old and well-established genera CutroNoMus, T'ANypus, and CERATOPOGON, to which have been added the genera Hypropanus Fries (= Oorynocerus Ruthe), 6 DIPTERA OF NORTH AMERICA. DIAMESA Meig., CoryYNONEURA Winn., and CLunto Hal., which is so remarkable by the habitation of its larva. The species of Cera- topogon exhibit a good deal of varied organization. A division into a number of smaller genera, which is indispensable, has been attempted, but not executed in a satisfactory manner, and the genera LABIDOMYIA Steph., Cunrtocrpes Latr., PaLpomyta Meig., Spu#roMias Steph., and PrionomyiA Steph. can be only consi- dered at present as sub-genera of Ceratopogon. The genus THa- LASSOMYIA Schin. has been separated from Chironomus. Also the genus MacropezA Meig. must be united with the Chironomide, and Macquart is right in having done so in his ‘“ Diptéres exo- tiques.” The genus ORPHNEPHILA Hal. (= Thaumalea Ruthe = Ohenesia Macq.) differs from all the other Chironomide by the veins of the wings running without attenuation to, and the costal vein being continued round, the posterior border. If we do not establish a separate family for it, its proper place will be here, but as an anomalous genus. The genera CuIRONOoMUS, TANYPUs, and CERATOPOGON are largely represented in N. A.; the most interesting are the species of Cera- topogon. Heteromyia Say belongs here. Of the remaining genera, I have seen only one N. A. species, which belongs to the genus ORPHNEPHILA, and does not seem to differ from O. testacea Ruthe. Fam. III. CECIDOMYIDAE. Charact.—Ocelli often none. Thorax without transverse suture. Coxe not elongated, femora not thickened, tibie without spurs. Wings having only few longitudinal veins. It is rather difficult to define sharply this most interesting family, and consequently to characterize it exactly. It contains a very large number of extremely delicate and elegant minute species, remarkable by long and easily rubbed off hairs on the wings and the other parts of the body. The limits between the families Cec?- domyide (Gall-gnats) and Mycetophilide (Fungus-gnats) are not very easily fixed, since Zygoneura Meig. shows a combination of the characters of both; the cox being far less elongated and the spurs of the tibie far shorter than in any other genus of Myceto- philide; moreover, the antenne are moniliform with verticillate hairs, as is frequently the case in the Cectdomyide and never so CECIDOMYIDAE. | 7? among Mycetophilide. But the total habitus of the Zygoneure being more like that of the former than of the latter, and the tibial spurs being so very short, that in some species they can only be discovered by the closest scrutiny, I think I may be justified if I add them to the Cecidomytde, though in many respects they agree with the genus Sezara, which has its natural place among the Mycetophilide. The whole family is divided into two sections. The first of these, the CecIpoMyYINA, have on the wings four longitudinal veins, the two last of which often coalesce in the beginning of their course, or are more or less incomplete. They have no ocelli, and the first joint of their tarsi is much shortened. The genera belonging here are: Hormomyra Loew, Diptosts Loew, Crcrpomy1A Latr., As- PHONDYLIA Loew, DirwizaA Loew, Cotpopia Winn., Eprposts Loew, Asynapta Loew, LastoprerA Metg., and CLinorHynona Loew. In the genera of the second section, the ANARETINA, between the second and third of those veins of the wings which the first sec- tion possesses, another longitudinal vein is inserted, being simple only in Campylomyza, while it is furcate in all the other genera; the first tarsal joint is not shortened, and in all genera, with the single exception of Cecidogona, there are distinct ocelli. To this section belong: CampytomyzA Meig., Cuctpocona Loew, ANA- RETE Hal., CatocHa Hal. (= Macrostyla Winn.), LestREMIA Macq. (= Diamesa Meig.), and ZyGonEuRA Merg. I have omitted here the genera HereropezA Winn. and Spant- ocERA Winn., not having had an opportunity of examining speci- mens. Heteropeza seems to harmonize in many points with the genera of the first section, but differs very strikingly by the totally different structure of its tarsi. Rondani has established in this family a good number of genera, which are, however, quite un- available, since the observations on which they are founded are too inexact. Very little information has thus far been published respecting the Cecidomyide of N. A. Most of the species sufficiently described belong to the genus Cecidomyia in its restricted sense, as is now in use; viz: Cec. destructor Say, salicis Fitch, and tritict Kirby ; Cec. grossularie Fitch ought, as it seems, to be referred to the genus ASPHONDYLIA; some fine species of the genera Drposis and LAsIoprera occur there. Out of the second section I have 8 DIPTERA OF NORTH AMERICA. seen species of the genera CAMPYLOMYZA, ZYGONEURA and LxEs- TREMIA. Of a new genus belonging to the same section, I have seen only one incomplete individual. Fam. IV. BLEPHAROCERIDAE. Charact.—Ocelli three. Wings very ample, naked (7. e. with hairs only perceptible under a very highly magnifying lens), with cracks caused apparently by folding; no discoidal cell. Posterior tibie with stout spurs, anterior tibia unarmed. The genus BLEPHAROCERA Macq. cannot, except by the utmost constraint, be included in any of the existing families. Its nearest relation is the Ceylanese genus TANYRHINA Loew. I unite these two genera in one small family, the name of which I derive from the older of the two. The Blepharoceride differ from the Cecido- myide by the stout terminal spur of their posterior tibie, from the Mycetophilide by their cox not being elongated, from the Bibionide by the want of an empodium and pulvilli, and by the very little development of their prothorax. In the form and tissue of their wings they are most nearly allied to the Stmulide, but by the existence of ocelli, and by the long slender legs, they seem to me to differ from them too much to be reunited with them. The neuration of their wings is rather similar to that of the Cecido- myide ; but Llepharocera has some more longitudinal veins, and thus its neuration resembles that of Macropeza. Besides the longi- tudinal veins, the wings show some fine cracks, perfectly similar in both, and looking as though produced by the expansion of the wings, which had previously been folded; this mark is peculiar to them, pointing to some peculiarities in their transformation un- fortunately still unknown; some certainty about the place due to them in the system may, therefore, be expected from the knowledge of their earlier stages. I know only one N. A. species of BLEPHAROCERA very much resembling that species which is spread over a great part of Eu- rope. Blepharocera americana Walk. neither belongs to this genus, nor even to this family. PSYCHODIDAE—TIPULIDAE, 9 Fam. V. PSYCHODIDAE. ~ Charact.—No ocelli. Body with long, coarse hairs. Thorax without a transverse suture. Tibiz without spurs. Wings everywhere with long coarse hairs, many longitudinal veins, and only a few trans- verse veins; no discoidal cells. The genera of Psychodide, on account of their neuration, form two sections; in the first, the PsycHopina, there are, between the furcate longitudinal veins common to all genera, two simple longitudinal veins. The genera of this section are: ‘PsycHopa Latr., Pertcoma Hal., Utomyta Hal. (= Saccopteryx Hal. ol.), Poston Loew, and NyamMatopres Loew (= Nemapalpus Macq.). In the second section, the PHLEBOTOMINA, we see only one longi- tudinal vein between the two furcate veins. The genera belonging here are: PuiEBotomus Pond. (= Hemasson Loew), TricHo- MyIA Hal. (= Phalenomyia Loew), Sycorax Hal., DipLoNEMA Loew, and PHILMMATUS Loew. The small number of N. A. Psychodide I have seen, belong without exception to the genera PsycHopA and Prricoma. In Europe there have been discovered besides the genera Ulomyia, Phlebotomus, Trichomyia, and Sycorax. From the smallness and fragility of Psychodidae, it may easily be conceived why so few N. A. species have still been detected. Fam. VI. TIPULIDAE. Charact.—No ocelli.* Thorax with a V-shaped transverse suture. Legs very elongated; the basal cells of the wings reaching beyond the middle; discal cell existing in most of the genera. The want of ocelli, the considerable length of the legs as well as of the basal half of the wings (the latter cause producing a prolongation of the basal cells beyond the middle of the wing), are the most essential characters of this family. Moreover, the V-shaped, transverse suture of the thorax is of the greatest value, since only the anomalous genera Dixa Meg. and Cu1onga Dalman are destitute of it. It does not seem natural to attribute to the former genus, on account of this circumstance, any other place * Except in Trichocera, where they exist. 0. 5S, , 10 DIPTERA OF NORTH AMERICA. but among the Ztpulide. The abnormal structure of the thorax in the wingless genus Chionea is less surprising, its form depending chiefly on the situation and size of the alary muscles, and, however it may differ in some respects from all the other genera of Tipu- lide, it would be still more inconveniently located in any other family. Whether the genus PotymMera Wied., which is distin- guished by its moniliform antenne and the basal cells not reaching to the middle of the wings, may be placed among the 7ipulide, appears doubtful. I should have thought it belonged to the tribe Psychodidae, had not Macquart figured the thorax of Polymera fusea with a distinct V-shaped transverse suture. The variety of forms prevailing in the family of Zipulide has caused the foundation of a rather large number of genera. In order to facilitate the description of the new species and the iden- tification of the described ones, a considerable increase of the number of genera is indispensable. On the whole, the 7ipulide may be divided into two sections, the TrpuLina having long, and the Limnoprna having short palpi. This division, indeed, is no natural one, since some genera with long palpi agree in all the rest of their organization more with the genera of the second than of the first section. The genera of Zipulide hitherto established, as I know them by sight, or, in part, by the definitions of their authors, may be dis- tributed as follows. To the Zipulina belong: Trpuna Linn., PrionocerA Loew, PacHyRuHINA Macg., NepHrotoma Meig., OTE- NOPHORA Meig., DoticHopEza Meig., OzopicERA Macg., CTENOGYNA Macq., GYNopuist1A Westw., Pritoayna Westw., MxEcIsTocERA Wied., Arrttesis Macg., Prycnoprera Meig., MacrocuiLe Loew, ProtopLasa O. S., Prerocosmus Walk., Hespertnus Walk., Brr- TACOMORPHA Westw., and Ruampurp1a Meig. To the section of Limnobina must be referred: Lrmnosta Metg., Grocuina Meig., Rurpipia Meig., Geranomyta Hal. (= Aporosa Macq.), Dicra- NOMYIA Steph., ANTocHA O. S., ELEPHANTOMYIA QO. S., LIMNOBIO- RHYNCHUS Westw. (= Toxorhina Loew), Dicranoprycua 0. S., TEUCHOLABIS O. JS., ERIOPTERA Meig., SyMpiecta Meig., CRYPTO- LABIS O. S., Gonomy1A Meg., GnopHomyra O. S., CuapuRa O. S., TricHocrera Metg., CyLInDROTOMA Meig., ANISOMERA Meig., AR- RHENICA O. S., Ertocera Macq., Dicranora Zett., Una Hal., Amatopris Hal,, TricyPHoNA Zett., EVANIOPTERA G'uér., PEDICIA Latr., LIMNoPHILA Macq., Erirpracma O. S., DicRANOPHRAGMA TIPULIDAE. 1l O. S., IptopterA Macq., LAstomasttx O. S., DActytouaBts O, S., PrionotaBis O. S. ; as Limnobina may also be mentioned the fossil genera which have been found in Prussian amber: TRICHONEURA, CALOBAMON, HAPLONEURA, CRITONEURA, TANYMERA, TANYSPHYRA, SryrincomyIA, ATARACTA, and ALLARITHMIA. As genera of doubtful location we may add the genus PotymErA Weed., and the anomalous genera Dixa Meg. and CuionEA Dalm. We know as genera of 7ipulina occurring in N. A. the follow- ing: TreuLa, PAcHyruINA, CTENOPHORA, PrTiILoGyNa, PrycHop- TERA, PROTOPLASA, HESPERINUS, BiTTAcOMORPHA, and RHAMPHI- pia. About the genera and species of Limnobina indigenous in N. A., Baron Osten Sacken, in the Proceedings of the Academy of Natural Sciences of Philadelphia, 1859, has published a detailed and valuable paper, which enters into a more complete and tho- rough exposition of the system of this section than is possible for me to give here. I must, therefore, refer to this paper. The species enumerated in it, most of which are new, belong to the following genera: Limnobia, Rhipidia, Geranomyia, Dicrano- mytia, Antocha, Elephantomyia, Limnobiorhynchus, Dicranoptycha, Teucholabis, Erioptera, Symplecta, Cryptolabis, Gonomyia, Gno- phomyia, Cladura, Trichocera, Anisomera, Arrhenica, Eriocera, Dieranota, Ula, Amalopis, Pedicia, Limnophila, Epiphragma, Dicranophragma, Idioptera, Lasiomastix, Dactylolabis, and Prio- nolabis; also Dixa and Chionea are recorded as N. A. genera. Note.—The special attention which I have, for several years, paid to the family of Tipulide may serve as an excuse for my expressing here my views on its distribution. Although these views are founded merely on the study of the species of this continent, the new character which I introduce for the definition of the two principal sub-families may also prove useful for the classification of the Tipulide of other countries. I divide the American species of Tipulide, at present known, into three sub-families, as follows :— I. The auxiliary vein ends in the first longitudinal vein; besides the hu- meral cross vein, there is no other cross vein between the auxiliary vein and the first longitudinal vein or the costa; last joint of palpi very long, filiform, generally longer than the three preceding taken together. TIPULINA. II. The auxiliary vein ends in the costa; there is a cross vein between it and the second longitudinal vein, generally more or less approxi- mated to the tip of the jirst longitudinal vein, sometimes more 12 DIPTERA OF NORTH AMERICA. removed from it towards the base of the wings; palpi in most cases short; last joint either very short, or, if elongated, hardly longer than the three preceding taken together Limnosina. III. Sixth longitudinal vein (anal vein of the former authors) obsolete. PrYCHOPTERINA. The two first large groups are further distinguished by the structure of the genital organs of the male, which, in most of the Limnobina, are represented -by a forceps, consisting of two movable, fleshy lobes, with some delicate horny appendages ; whereas in the Z%pulina the forceps is a very compound organ, consisting of manifold horny pieces, which, being inclosed between the dorsal and ventral plates of the two last abdominal segments, produce the club-shaped appearance peculiar to the tip of the *, abdomen of this sub-family. Thus founded, not on a single character, but on a combination of. dae racters taken from various organs, the definition of the two great sub- families hardly leaves any doubtful case among the Tipulide which I know of. If one character fails to give a satisfactory result, the others will generally remove at once any doubt as to the relationship of the spe- cies. Thus, the last joint of the palpi of Pedicia is unusually long; but the auxiliary vein, ending in the subcosta, and the presence of a cross vein between it and the second vein, immediately refer it to the Limnobina, where this genus naturally belongs on account of its habitus. (I have neglected to examine this last joint in fresh specimens of Pedicia, but it appears very probabfe that its disproportion with the other joints is far from being so striking as is the case in the 7%pulina.) In Rhamphidia, the last joint of the palpi is represented by former writers to be elongated. I had no occasion to ascertain, on living speci- mens, how far this is correct. But the presence of the cross vein places this genus among the Limnobina, where it naturally belongs by its habitus. - And even if this character should not be considered as sufficient, on account of the extreme shortness of the cross vein, placed at the very tip of the auxiliary vein, the structure of the male genitals removes all doubt. In some Pachyrhinz there is, near the tip of the auxiliary vein, a blackish dot, which might perhaps be mistaken for a cross vein. But should it even be considered as a rudiment of one, the length of the last joint of the palpi, the structure of the male genitals, etc., assign its place among the Tipulina, where its habitus most evidently refers it. In the singular genus Antocha O. 8. the costa and the auxiliary and the first longitudinal veins coalesce insensibly together, so that there is no room left for a cross vein. In this case, the shortness of the palpi and the structure of the male genitals decide of its location among the Lim- nobina. I refer to my sub-family of Ptychopterina the genera Ptychoptera, Bittaco- morpha, and Protoplasa (with its congener Macrochile Loew). As to the distribution of the other genera among the two remaining sub-families, I agree with Mr. Loew, with the following exceptions :— MYCETOPHILIDAE. 13 Rhamphidia, as shown above, is more related to the Limnobina than to the Tipulina; by all means it ought not to be separated from Elephanto- myia, as Mr. Loew does it. In my paper on the Limnobina of this country, I have explained the close relationship of both. lephantomyia is nothing but a Rhamphidia with an enormously-prolonged rostrum, the development of which has also modified the character of the palpi inserted at its tip. (Geranomyia, with its long rostrum and stunted palpi, stands precisely in the same relation to Dicranomyia.) Gynoplistia Westw. (an Australian genus) and Polymera Wied., both of which I know only from plates and descriptions, belong, I presume, to the Limnobina. . Hesperinus, Walk. belongs to the Bibionide (see my note in that family). About Pterocosmus Walk. I have no opinion whatever, not having seen it, and not being able to establish any opinion on the description. To the list of genera already found in North America, I have to add Dolichopeza, Nephrotoma, and probably Cylindrotoma, as I possess a species apparently closely allied to the latter. Finally, it is the place here to notice that Mr. Westwood (Lond. and Edinb. Philos. Magaz., 1835) has de&cribed a Gynoplistia annulata from North America. As it is hardly probable that an Australian genus should also be represented on this con- tinent, it is to be presumed either that the genus is different, or that the statement is based upon an error of locality. Gynoplistia has pectinated antenne in both male and female. OsTEN SACKEN. Fam. VII. MYCETOPHILIDAE. Charact.—Ocelli three or two, in the latter case often hardly perceptible. Thorax without a transverse suture; wings without discal cell. Coxe much elongated; all the tibize with spurs. On the whole, the Mycetophilide are so easily known that it would be superfluous to give any more details about them. The genus differing the most from the rest is Sc‘ara, which shows some affinity with the Cecidomyide. The genera hitherto introduced in this family are the following: CorpyLa Meig. (= Brachypalpus Macq.), Mycrropuita Meig., AZANA Walk., Lesa Metg., Botertna Staeg. (= Leptomorphus Walk.), Sctopnita Metg., Sctopra Loew, TETRAGONEURA Winn., GnoristE Merg., AstnpuLUM Latr. (= Macrorhyncha Winn.), CeropLatus Fabr., Leptomorpuus Curt., Diapocipra Ruth. (= Macroneura Winn.), AcLADA Loew, Myceropta Metg., PLEstas- TINA Winn., Diromy1aA Winn. (Symmerus Walk.), PuLatyura Meig., PLATYROPTILON Westw., Maocrocrra Meig., BotiroPHiLa 14 DIPTERA OF NORTH AMERICA. Meig. (= Messala Curt.), Heterorricna Loew, Dianepsta Loew, Scrara Fabr., and the genus Diomonus Walk., which is unknown to me. I have not mentioned the genus SyNAPHA Mezg., because. it seems to have been founded on an individual of a species of Leja, which possessed an irregularly formed neuration; at least as far as I know, no second specimen of Synapha has been captured since Meigen’s time, while a similar anomaly of neuration of the wings has been observed several times in other Diptera. Our knowledge of N. A. Mycetophilide is exceedingly incomplete. I have seen species of the genera MycETOPHILA, BoLETINA, Scto- PHILA, TETRAGONEURA, PuLEsIAsTINA, DiroMy1A, PLAtyurA, Ma- CROCERA, BoLITOPHILA, and SctaRA. Besides these, the existence of CEROPLATUS seems to be certain, and the genus D1oMonus, which I have never seen, is founded on a N. A. species. Fam. VIII. SIMULIDAE. Charact.—Ocelli none. Thorax without transverse suture. Wings with very short hair only visible under a very high magnifying power ; legs short, tibie without spurs; posterior tibie and first joint of the hind tarsi dilated. The present family comprises only the genus Simutium Latr., rich in species and which cannot be placed in any other family. It does not seem to be less rich in species in N. A. than in Europe. Fam. IX. BIBIONIDAE. Charact.—Ocelli three. Thorax without transverse suture; prothorax much developed. Wings without discal cell; cox not prolonged ; empodium proportionally long, whereas the pulvilli are wanting in some of the genera. The family of Bibiontde is divided into two sections sharply separated from each other, and which it would be proper to con- sider as distinct families. In the Scaropsina, which form the first section, the palpi are very short, the pulvilli wanting, the tibie without spurs; the genera belonging to them are: ScATOPsE Geoffr., Aspistes Meig., AntHRIA Kirby. To the second section, the Brsionina, belong: Dinopuus Meig., Brsto Geoffr., PENTHE- RHYPHIDAE—XYLOPHAGIDAE. 15 TRIA Metg., CRAPITULA Gimm., PLEcIA Wied., EuPEITENUS Macq., PACHYNEURA Zett., and Spopius Loew. Species of the genera Scatopsz, ARTHRIA, DiLopHus, Brsto, Puecta, and EvUPEITENUS are known to occur in N. A. Note.—At the time when this was written by Mr. Loew, neither he nor I possessed specimens of the genus Hesperinus, which its author, Mr. Walker, referred to the Tipulidz. Having obtained specimens since, collected by Mr. R. Kennicott near the Great Slave Lake, I found that Hesperinus be- longs to the Bibionidx, and is apparently synonymous with Spodius Loew. * Accordingly, Hesperinus Walk. is to be added to the genera of this family occurring in N. A., and stricken out from among the Tipulidz. 0.5. Fam. X. RHYPHIDAE. Charact.—Ocelli three. Thorax without transverse suture; wings with a perfect discal cell; empodium similar to a pulvillus; pulvilli want- ing. Of this family also a single genus, Ruypuus JJetg., is known, which has representatives in Europa, Asia, and N. A. Observation.—There is a genus Hpidapus Hal., remarkable for having no wings and no poisers, which I have omitted in the pre- ceding enumeration of families, because I do not know it. It is quite impossible to place it among the MMycetophilide, as Walker does, if we characterize the families as we have done. It rather seems to find its place among the Cecidomyide ; but there is nothing decisive to be said without the examination of fresh specimens. il. BRAGH VYCOHRRBA. Fam. XI. XYLOPHAGIDAE. Charact.—The three basal cells very prolonged, the third longitudinal vein furcate; both intercalary veins always present; the marginal vein encompassing the whole wing; the third joint of the antennz annu- lated or divided into separate joints, always without style or termi- nal bristle. Tibie with spurs; the empodium very developed and pulvilliform. The genera belonging here are: XyLopHacus Metg., Pacuy- stomus Latr., Susuta Meig., ELEcTRA Loew, CHRYSOTHEMIS 16 DIPTERA OF NORTH AMERICA. Loew, Racutcerus Hal., Comnomyra Latr., and ARTHROPEAS Loew. 'The new genera CycLoreius, Paycus, and DIMassus, es- tablished by Walker as belonging to the Xylophagide, belong in fact to the Therevide; likewise NoNAcRIS must be removed here, but Walker’s observations on its characters are far too superficial to admit of any certainty in fixing its place; also DIALysIs on ac- count of the hairy, bristle-like antennal tip ascribed to it by Walker might seem to be erroneously located among the Xylophagide, the characters of which he appears not to have understood. Cenomyta Latr. has often been separated from the Xylophagide « and considered as forming a distinct family: Cawnomyide, or for- merly Sticarti. This seems to have been caused by the body of Cenomyia being stout, whereas that of Xylophagus and Subula is of aslender form. Moreover, the different form of the palpi, which in Cenomyta are rather cylindrical and ending in Xylophagus and Subula in a button-shaped thickening, have been made use of to justify the separation. But within a recent time forms of Cano- myide have been discovered in which the structure of the body and palpi is such as to form a link between them and the Xy/opha- gide; from this, as well as from the agreement of their other essential characters, results the necessity of reuniting them. In case the separation should be maintained, Arthropeas ought to be placed among the Canomyide. The family of Xylophagide may be divided into three sections: Ca@nomyina, RAcHICERINA, and XYLOPHAGINA. The Canomyina are characterized by their robust structure, the third joint of the antenne being annulated and pointed towards its end, the palpi being cylindrical. The genera comprised here are Canomyta and ARTHROPEAS. In the Rachicerina the third joint of the antenne is divided into separate and frequently very numerous articula- tions, and the palpi are rather club-like; the body is less heavy than in the Cenomyina, but less slender than in the Xylophagina. The genera ELEcTRA, CHRYSOTHEMIS, and Racuicerus belong here. The Xylophagina have the slenderest bodies; the third joint of the antenne is annulated and never strikingly pointed; the palpi have at their end a button-shaped thickening. The genera SUBULA, XYLoPHAGUS, and Pacuysromus may be referred here. . I am acquainted with N. A. species belonging to the genera CayomyiA, AnTHRopEAS, Racuicerus, SusuLa, and XyLOPHAGUS. STRATIOMYIDAE. \ 17 Two of the species of Racuicerus cannot be well placed in this genus without a modification of its characters. Observation.—I have to mention here the genus BoLgomyla, which I established on two fossil species found in Prussian amber. When I published in 1850 my observations on the Dipterological Fauna of amber, I thought it would be best placed among the Xy- lophagide. But I perceive from a N. A. specimen belonging to Bolbomyta that its claim to that place is more than doubtful, and at the same time that it is quite as difficult to assign it a fit place elsewhere. Fam. XII. STRATIOMYIDAE. Charact.—Three basal cells much prolonged; veins of the two main trunks very crowded anteriorly; both intercalary veins usually existing ; costal vein reaching only to the middle of the wing. Third joint of the antennz annulated, sometimes divided into several portions. Tibiz without spurs; empodium much developed, pulvilliform. This family, rich in various forms, may be divided into five sharply circumscribed sections. The first is that of the Bermprna, easily distinguished by the abdomen not showing five segments, as in the other sections, but seven, a difference caused only by the smallness of the two last segments and their concealed situation in the other sections. The Bertdina have often been placed in the family of Xylophagide, but figure more naturally among the Stra- tiomyide. The genera belonging to them are: Meroponta Macq. (= Inopus Walk.), Breris Latr., Actina Meig., EXopontHa fond., ACANTHOMYIA Sch., Dipuysa Macg., CAMPEPROSOPA Macq., perhaps also Exocnostoma Maeg.; also the genus CHIROMYZA Wied., which does not differ from Xenomorpha Macq., may be re- ferred to them. The second section is that of Saraina, rather agreeing in the form of the body with the Beridina, and even with the Hermetina, but differing from the former by the abdomen consisting apparently of five segments, and from the latter by the eyes of the males being much more approximated than those of the females. As genera of this section may be mentioned Cacosis Walk., Acrocnzta Wied., EupMeta Wied., ANALcocERUS Loew, SatpuBa Walk., Toxocera Macg., Hoptistes MJacg., RAPHIOCERA Macq., BASENTIDEMA Macqg., DickANnopHora JMacqg., CHRYSOCHLORA Macq., Prxcricus Loew, Merosaraus Loew, PrpicerLta Big., 2 18 DIPTERA OF NORTH AMERICA. Curysonotus Loew, Saraus Fabr., Cuortsoma fond., Curysc- myIA Macg., and Microcurysa Loew. The third section, Herme- TINA, is well characterized by the elongated abdomen, the eyes, which are equidistant and very remote in both sexes, and the peculiar structure of the antenne, the third joint of which is transformed into a ciliated lamel. The genera Hermeria Lair., THorASENA Macq. belong to them. The fourth is formed by the OponToMmyINA, which are distinguished from the foregoing by their broad body and from the following section by the less convex ab- domen and especially by the neuration, the longitudinal veins of the Odontomyina being more crowded anteriorly, the discal cell being smaller, hexagonal or pentagonal, never large or subquad- rate; moreover, both intercalary veins are usually present, while the posterior one is almost always wanting in the Pachygastrina. The following genera may be referred to the Odontomyina: Cy- pHomyYIA Wied., CHoRDONOTA Gerst., HUPARYPHUS Gerst., PYcNo- MALLA Gerst., ALLIOCERA Saund., StRATIOMYS Geoff., ODONTOMYIA Meig., IneRmy1a Big., NEMoTELUS Geoffr., OxycERA Meig., Here- ROXYCERA Big., Epuippium Latr., CLITELLARIA iMeig., CycLoGAs- TER Macq. (= Lastopa Brull.), ArtemMipA Walk,, Aissa Walk., Merasasis Walk., PROMERANISA Walk. The fifth section is that of the Pachygastrina; it is distinguished by the longitudinal veins being less crowded towards the costal border, by the magnitude and quadrangular form of the discal cell, the almost general want of the posterior intercalary vein, the short, generally much inflated, abdomen, and its segments soldered together in some genera. The genera belonging here are: PAcHYGASTER Mezg., LopHoretEs Loew, STERNOBRITHES Loew, PLATYNA Wied., BiastEs Walk., PT1Locera Wied., Cuauna Loew, BLASTocERA Gerst., SPYRIDOPA Gerst., Panacris Gerst., Nerua Walk., Cuncua Walk., Evaza Walk., ANACANTHELLA MMacq.; perhaps also PHYLLOPHORA Macg., and Antsopuysa Macq. To which section of the Stratiomyide the genera Solva, Amp- salis, Tracana, Rosapha, Tinda, Saruga, Gabaza, Adraga, and Obrapa, lately formed by Walker, are to be referred, the extreme vagueness of the characters ascribed to them does not allow me to determine. The N. A. species which are now known to me belong to the following genera: I. Beridina: Merroponta, Actina; II. Sargi- ACANTHOMERIDAE—TABANIDAE. 19 na: Saraus, Miorocurysa: III. Hermetina: Hermetia: IV. Odontomyina: CypuHomytA, EvupArypHus, STRATIOMys, ODoNTO- MyIA, NEMOTELUS, OxyceRA, CLITELLARIA; V. Pachygastrina: PACHYGASTER, CHAUNA. Fam. XIII. ACANTHOMERIDAE. Charact.—Basal cells much prolonged; longitudinal veins not crowded together anteriorly ; two intercalary veins always present; marginal vein running round the whole border of the wing. Oral parts with four bristles, even in the male. Third joint of the antenne annu- late. Tibiz without spurs; empodium developed to a pulvillar form. This small family contains only the two genera ACANTHOMERA %ed, and Rapuioruyncuus Wied. It differs from the Stratio- myide by the longitudinal veins not being crowded together ante- riorly, by the marginal vein encompassing the whole border of the wing and by the fourth cell of the posterior margin being closed. It differs from the Zabanide in the form of the oral parts and by the tegul being very little developed; as to the oral parts, I have no absolute opinion of my own, but must rely on the communica- tions of others. No species of this family has been as yet discovered in N. A. Fam. XIV. TABANIDAE. Charact.—Three basal cells much prolonged ; third longitudinal vein fur- cate; two intercalary veins always present; marginal vein running round the whole border of the wing; tegul# rather large. Proboscis of the male with four, of the female with six bristles. Third joint of the antenne annulate, rarely divided into distinct joints, always without style or bristle; empodium much developed and pulvilli- form. The Zabanide are easily distinguished from the foregoing fami- lies by the structure of the oral parts and by the size of the tegule. On account of the presence or absence of spurs at the end of the posterior tibize they may be divided into the sections of PANGONINA and TABANINA; the former often, but not always, possess ocelli, whereas, according to the observations hitherto made, they are always wanting in the latter section. To the Pangonina belongs, firstly, the genus Panconta Latr. 20 DIPTERA OF NORTH AMERICA. with the genera separated from it and partly connected with each other by passages: Philoliche Hifgg., Dicrania Macq., Peleco- rhynchus Macq., Oadicera Macq., Nuceria Walk., Melpia Walk., Scaptia Walk., Tacina Walk., Phara Walk., Clanis Walk., Osca Walk., Scione Walk., Plinthina Walk., Scarphia Walk., and Lilea Walk.; moreover, the genera: Scepsis Walk., Stuvrus Meig., ME- somy1a Macq., TABANOCELLA Big., Kcrenopsts Macg., RuINOMYZA Wied., Eropioruyncuus Macqg., GasrroxipEs Saund., PRoNOPES Loew, Curysops Meig., and Nemorius Pond. The Zabanina comprise the genera: TaBanus Linn., with T'he- rioplectes Zell., DicnEnacera Macq., Lupisenaca Macg., SELA- soma Macg., Haprus Pert., Diapasis Macqg., AcANTHOCERA Macq., Dasyzasis Macg., Hexatroma Metg., and Hamaropota JMeig. The N. A. species which we are acquainted with belong to the genera: I. Pangonina: 1. Panconta Latr., 2. Smvius Mezg., 3. Curysops Meig. Il. Tabanina: 4. Tasanus Linn., 5. LeEpt- sELAGA Macg., 6. DiaBasis Macg., 7. Hamatopota Meg. Fam. XV. LEPTIDAE. Charact.—Three basal cells much prolonged ; third longitudinal vein fur- cate; two intercalary veins always present ; marginal vein running round the whole border of the wing. Third joint of the antenne simple, with a simple or thickened styliform bristle. Tibie with spurs; empodium much developed, pulvilliform. This family is very easily distinguished from the foregoing families by the simple third joint of its antenne. A division into sections has not been attempted yet, and would be useless for the small number of genera hitherto known. The genera belonging to this family are as follows: DasyomMa Macq., CHRYSOPILA Macq., Trierorricua Loew, Lepris Yabr., VeRMILEo Macq. (= Psammorycter Blanch.), ATHERIX Metg., Noputis Meg. (= Lbisia Rond.), and Spania Mety. (= Ptiolina Zett. = Leptipalpus Rond.). The location here of the genus Syneches is one of the many errors which we meet with in the writings of Mr. Walker. I know N. A. species belonging to the genera: 1. CHRYSOPILA Macq., 2. Leptis Fabr., 3. Trrprorricna Loew, 4. ArTHERIX Vezg. Mr. Walker has also recorded a species of the genus Spanta Meig. CYRTIDAE—HIRMONEURIDAE, 21 Fam. XVI. CYRTIDAE. Charact.—Thorax and abdomen inflated. Eyes occupying the greatest part of the head. Tegule vaulted, exceedingly large. Wings naked, with variable neuration, sometimes very intricate, some- times very incomplete; the basal cells, when present, are of consi- derable length. Terminal joint of the antenne simple. Tibie without spurs; empodium much developed, pulvilliform. This family is divided into the two sections of CyrTINA and Oncopina. In the former section the veins of the wings are strong and well developed, and the neuration is usually rather complicated. It contains the genera: Cyrtus Latr., Preropexus Macq., EPt- CERINA Macg., PANops Lam. (= Mesophysa Macq.), LAsta Wied., Evutoncuus Gerst., PstnopErA Griff. (= Mesocera Macq.), PTERO- pontiA Griff, AstomentA L. Duf., Pays Lrichs., OcNmA Erichs. (= Eriosoma Macq. = Ezelasis Walk.), PraLEa Erichs., OxsEsius Cost. (= Pithogaster Loew), PHysEGASTER Macq. The section Oncodina is distinguished by the anterior veins of the wings alone being completely developed, whereas the posterior ones are not only very incomplete, but also disappear gradually, and frequently are not completely connected. The genera which belong here are: Oncopres Latr. (= Henops Meig.), TERPHIS LErichs. and Putnopota Wied. The N. A. species known to me belong to the genera: I. Cyr- tina: 1. Cyrtus Latr., 2. OcnmaA Lrichs., 3. PreRoDONTIA G'riff., 4. AcrocERA Mezg., 5. a genus hitherto unnamed, and related to Obsebius, 6. HuLoncuus Gerst., occurring in California. IL. On- codina: J. ONcopEs Latr. Fam. XVII. HIRMONEURIDAE. Charact.—Three basal cells much prolonged; veins of the wings varying; third longitudinal vein furcate; the two intercalary veins present. Third joint of the antenne simple; terminal bristle simple or simi- lar to a style, and consisting of several joints. Tibize without ter- minal spurs; empodium pulvilliform, but more frequently minute as well as the pulvilli. This family, usually called Nemestrintde, must be divided into the two sections HrrMONEURINA and RHAYNCHOCEPHALINA. The first comprises the genera: HirmMoneurA Jeig., EXERETONEURA 92 DIPTERA OF NORTH AMERICA. Macq., Cotax Wied., TRICHOPSIDEA Westw., and Symmictus Loew, all of which are characterized by their very short proboscis. To the second belong the genera: FALLENIA Mezg., NEMESTRINA Wied., MeaistorHyNncHus Macg., TRICHOPHTHALMA Westw., and Ruyn- CHOCEPHALUS Fisch. We are only acquainted with a single N. A. species belonging to HirmoneuRa Mezg. Fam. XVIII. MIDASIDAE. Charact.—Three basal cells much prolonged; third longitudinal vein fur- cate; posterior intercalary vein always present, whereas the ante- rior one is often wanting; veins of the wings varying; wings naked. Antenne clavate with the third joint consisting of several distinct segments. Under lip fleshy. Empodium very little developed. To this family belong the genera: Mipas Fabr., CEPHALOCERA Latr., Ruopauia Macq., and DoticHocasterR Macg.—PoMACERA Macq. may also be placed here till its true place is found. The N. A. species hitherto known belong only to the genus Mipas Fabr. Fam. XIX. ASILIDAE. Charact.—Three basal cells much prolonged. Third longitudinal vein of the wings furcate, the two intercalary veins always present. Third joint of the antenne simple; under lip forming a horny sheath; empodium similar to a horny bristle. This family, rich in species of the most varied forms, is divided into three sections. The first of them is that of the Dasypogo- NINA, differing from the two others by its second longitudinal vein running into the border of the wing, whereas in the others it unites with the first longitudinal vein before the border of the wing. The considerable number of genera requires a further division into two subordinate groups, the first of which comprises those genera in which the anterior tibia end in a hooked spine, whereas the genera of the second portion have no such spine. Consequently the genera belonging to the first group of Dasypogonina are as follows: DAsypocon Mezg., Saropocon Loew, Lasraurus Loew, Morimna Walk., Cyrropurys Loew, Laparus Loew, BRACHYRHO- PALA Jlacg., CuEILopogon Lond., Lacopias Loew, and PxraE- ASILIDAE. 23 SIMALLUS Loew. Those of the second group are: MicrostyLuM Macq., Mecapoitiron Walk., XipHocerus Jacg., DoLicHopEs Macq., DiscocePHaLa Macq., SENoBASIS Macg., PLESIOMMA Macq., Srenopocon Loew, BATHypogon Loew, Hapropocon Loew, Hoxo- pocon Loew, Er1opocon Loew, Hergropocon Loew, Isopocon Loew, OxtaoroGon Loew, SticHopoaon Loew, SARopoacon Loew, Dicra- Nus Loew, Trictis Loew, Evarmostus Walk., Protepsis Walk., Coputa Macg., Casasa Walk., Puevitus Walk., PHILAMMOsIUS Walk., GastricHetius Rond., Dactruiscus Rond., ELASMOCERA Rond., PuEneus Walk., Cropruocerus Loew, Pycnopocon Loew, ANAROLIUS Loew, ACNEPHALUM Macgq., SISYRNODYTES Loew, RHA- pinus Loew, Creraturcus Wied., Dioctria Metg., TERATOPUS Loew, DaspLetis Loew, Lapuyctis Loew, Scytaticus Loew, Hy- PENETES Loew, Spanurus Loew, RHABDOGASTER Loew, DAMALIS Wied., LEpToGAstTER Jfeig. (= Gonypes Latr.), Huscenip1a Westw., and LASIOONEMUS Loew. ‘The second section of the Asiide are the LAPHRINA; it agrees with the third in the second longitudinal vein running into the first, but differs from it in the style of the antenne either being thick and stout, and generally only rudimentary, or entirely want- ing, whereas the antenne of the third section possess a distinct terminal bristle. The genera of the second section are: LAPHRIA Metg., LaMpriA Macg., HopuistoMera Macg., Mrecapopa Macq., RaAoPALoGASsTER DMacg., Micnotamia Macg., ATomosta Macq., LAXENECERA Jacg., TAPINOCERA Macq., PHoneus Macg., La- PHystTIA Loew, Nusa Walk., Scanpon Walk., Dasyiuis Loew, La- MyRA Loew, Lamprozona Loew, DAsyTHRIX Loew, THEREUTRIA Loew, AMpyx Walk., Cormansis Walk., Cumrapes Walk., Acu- RANA Walk., Pseuporus Walk., Poaonosoma Jtond., and Dysrris Loew. The third section is that of the Asrirna, which is characterized by its second longitudinal vein running into the first, and by its antenne having a distinct terminal bristle. The genera belonging to this section are: MatiLopHora Macg., PRomAcHus Loew, ALCI- Mus Loew, Puitepicus Loew, Craspepia Macq. (= Blepharotes Westw.), PotypHonius Loew, ApocLEA Macq., HRAX Macq., ERts- tTicus Loew, ProcracANTHus Macg., Stenoprosopis Macqg., SYNOL- cus Loew, Dysctytus Loew, LopHonotus Macq., TRicHonorus Loew, Dasopurys Loew, PRoTopHANES Loew, DysMAcHus Loew, Evrotmus Loew, Macuimus Loew, MocutuEerus Loew (= Helig- 24 DIPTERA OF NORTH AMERICA. moneura Big.), STILPNOGASTER Loew, Eprrriprus Loew, ITaMus Loew, Tormerus Loew, Cerpistus Loew, PRoagonistes Loew, Asitus Linn., Eccoptopus Loew, Ruapiuraus Loew, PAMPONERUS Loew, AntTIPHRISSON Loew, Eoutuistus Loew, ANTIPALUS Loew, Putnopicus Loew, Lecanta Macqg., ATRACTIA Macg., and OMMA- tTius Wired. Most of the N. A. Asilide, but by no means all, may be placed in the genera hitherto established. I give, as far as I am able to do so under such circumstances, the following list of genera known to me as occurring on that continent :— I. Dasypogonina: 1. Dasypocon JMerg., with several species which will require the formation of some new genera; 2. Micro- styLuM Macgq., 3. DiscocerpHata Macq., 4. PLestomma Macg., 5. Srenopoaon Loew, 6. BArHypocon Loew, 7. Lastaurus Loew, 8. Evarmostus Walk., 9. Poenrus Walk., 10. StrcHopocon Loew, 11. Ceraturaus Walk., 12. Leprocaster Meig. The N. A. spe- cies recorded as belonging to Diootria Metg. are. no Dioctrieé at all; at least Diocrr. ooropuNncTata Say is by no means a true Dioctria, Il. Laphrina: 13. Mecaropa Maeqg., 14. Laparta Metg., 15. ANDRENOSOMA Jond., 16. LAMpRIA Macq., 17. ATomMosiA Maeq., 18. Lapaystia Loew. Ill. Asilina: 19. MAttopHora Macqg., 20. Promacuus Loew, 21. Erax Macqg., 22. Procracantuus Macg., 23. MocuTHERus Loew, 24. Epirriptus Loew, 25. OMMatius Wied. Fam. XX. THEREUIDAE. Charact.—Three basal cells much prolonged; the two intercalary veins present; third longitudinal vein furcate. Antenne with a terminal style of variable form, sometimes wanting. No empodium. Under lip fleshy. The principal genera belonging to this family are: XESTOMYZA Wied., BarypHora Loew, CionopHorA /gg., Exapata Macq., THEREUA Latr., EorInorHyNcHUS Macqg., ANABARHYNOHUS Macq., Tasupa Walk., CycuoteLus Walk., Paycus Walk., and Dimassus Walk. The N. A. species with which I am acquainted may be conve- niently placed under the genus THEeReva Latr. In case the genus BOMBYLIDAE. 25 Psilocephala Zett., which does not appear to be well founded, should be admitted, some species with naked faces would be located in it. Fam. XXI. BOMBYLIDAE. Charact.—Three basal cells much prolonged; anterior intercalary vein present almost without exception, the posterior always wanting ; third joint of the antenne simple; empodium quite rudimentary. This, again, is a family exceedingly rich in the most varied forms. A distribution into several tribes would therefore be very useful; the two sections hitherto adopted, one of which comprises the genera grouped round the genus Bombylius, having a long proboscis, while the second consists of genera more allied to the genus Anthrax, having a short proboscis, do not appear sufficient to embrace all the forms which have hitherto been discovered. I am unable to give a better distribution, and I think it will not be possible to do so-until the number of sections is increased to at least five or six. The genera of Bombylide are as follows: Bom- ByLius Linn., EURYCARENUS Loew, TripLasius Loew, SysTamcHus Loew, Sparnopoutus Loew, Discutstus Loew (= Bombylisoma Rond.), Parisus Walk., Cuoristus Walk,, HETEROsTYLUM Macq., Lasroprosopa Macg., ADELIDEA Macg., AcrEorricHus Macq., ApatomyzA Wied., TuurpsomyzA Metg., AMictus Wied., Mxrca- PALPUS Macq., Puruiria Metg., CycLorHyNcuus Macg., DASYPAL- pus Maeg., Crocipium Loew, Grron Meig., Apotysis Loew, OLI- GODRANES Loew, Muuio Latr. (= Glossista Rond.), CHALCOCHITON Loew, CALLOSTOMA Macg., SrrtcosomA Macq., Toxopnora Meig., EniconeurA Macg., LeprnopHora Macg., CorsomyzaA Wied., Ecut- Mus Loew, Systropus Wied., DoricHomy1a Wied., Usto Latr., Puiatypyaus Loew, Crrrosta Perr., PLEAS Latr., CYLLENIA Latr., Laaocuitus Loew, ANISOTAMIA Macqg., Lomatta Metg., Oncopo- cERA Macqg., Puestocera Macqg., Liayra Newm., ANTHRAX Scop., ARGYROMG@BA Schin., NeurtaA Newm., Comprosta Macq., Lito- RHYNCHUS Macg., SpocostyLuM Macq., Entca Macg., TOMOMYZA Wied., ARGyRosPILA Vond., Exoprosopa Macg., AuTONIA Loew. The N. A. Bombylide which I have seen may be distributed amongst the following genera: 1. Bompyiius Linn., 2. Systacuus Loew, 3. SpaARNopotius Loew, 4. LeprpopHorRA Westw., 5. Toxo- prora Mety., 6. GERON Meig., 7. Systropus Wied., 8. PLoas 26 DIPTERA OF NORTH AMERICA. Latr., 9. ANTHRAX Scop., 10. ARGyRoM@BA Schin., 11. Exopro- sopa Macq. Moreover, Macquart has founded his genus Oncodocera on a N. A. species, and described a N. A. species among his Anisotamie, though it seems to be an alien there. Mr. Walker described some N. A. species, which he placed under the genera Apatomyza Wied. and Phthiria Meig. Fam. XXII. SYRPHIDAE. Charact.—Three basal cells much prolonged ; third longitudinal vein sim- ple; a spurious longitudinal vein (vena spuria) between the third and fourth longitudinal veins; fourth longitudinal vein united at its end with the third; no intercalary veins. Hypopygium unsym- metrical; no empodium. This is one of the most extensive families and includes about eighty genera, the enumeration of which seems to be superfluous here.. A distribution into sections, however desirable, proves exceedingly difficult. To divide the family into genera with an antennal bristle and genera with a terminal style would be no great gain, since the number of the latter is very small. I know the following genera to occur in N. A.: VOLUCELLA Geoffr., TeEMNoceRA St. Farg., Micropon Meig. (= Aphritis Latr.), Certa Fabr., Sertcomy1a Metg., Troprpra Metg., SyrirTa St. Farg., Xyuota Meig., MatLora Meig., BRAcHIPALPUS Maczq., Mitesia Latr., Spaecomy1a Lair., Somunta Macg., CoRYSOTOXUM Metg., Mixtemy1a Macg., Mautota Metg., HeLopattus Meig., Eristatis Latr., PLaciocerA Macg., Ocypramus Macg., BAccHA Fabr., Spurcina Meig., Rutneta Fabr., ORTHONEURA Macg. (= Cryptineura Big.), Paraaus ZLatr., Curmosta Meig., Curyso- CHLAMYS Fond., Doros Metg., Dipra Macg. (= Enica Meig.), Metirarertus Loew (= Spherophoria Macq.), MrsoGRAMMA Loew, Syrpuvs Fabr., Scmva Fabr,, PLratycuerrus St. Farg. It results from the remarks of some authors that species of the genera: Pipiza Fall., Chrysogaster Meig., Epistrophe Walk., Po- lydonta Macq., and Merodon Latr. occur with certainty in N. A. The genus Chymophila Macq. founded on a N. A. species must be entirely blotted out from the list of genera. For it is evident that Bigot is right in stating that the specimen on which it was MYOPIDAE. 27 founded was a composition of a body of a Merodon with the head of a Conops. The genus Zoxomerus Macq. has not been mentioned in the above list, it being quite untenable. I judge Dimeraspis Newm. to be identical with JMerodon. Psarus has been omitted, because the species described under this name must be placed in other genera. The statement of Humerus Meig. occurring in N. A. is founded merely on an observation of Walker, and therefore requires further confirmation, Macquart records a N. A. species of the genus Psilota Meig., but this genus having been misunder- stood by most authors, I do not venture now to mention it among those truly represented in N. A. Fam. XXIII. MYOPIDAE. Charact.—Three basal cells large, the third closed, more or less remote from the posterior border; all longitudinal veins simple; no inter- calary vein. Eyes in both sexes broadly separated; proboscis, with few exceptions, much prolonged; maxille small; the third joint of the antennz with an apical style or a thick dorsal bristle. Hypo- pygium symmetrical, turned under the abdomen. Empodium wanting. Omitting the untenable genera into which the genus Conops has _ been subdivided by Rondani and the genus Myopa by Perris, we mention here the genera: Conops Zinn., PLEUROCERINA JJacq., Zovion Latr., Myopa Latr, and Sracuinia Macq. This family has been divided by some authors into two families: Conopide and Myopide, the former containing those genera which have an apical style on the antennw, the latter being characterized by a dorsal bristle of the antennee. I cannot approve of this divi- sion at all, since the difference between a style and a bristle, and the difference of an apical and a dorsal position, according to all experience, only furnishes characters of very inferior value for the systematic arrangement, as we see in the families Stratiomyde, Bombylidex, Syrphide, Hybotidex, Dolichopidx, etc., where this organ is sometimes apical, sometimes dorsal. We might as well form two families on account of the proboscis being either straight or geniculated. But the conspicuity of the difference in the struc- ture of the antenn may serve to form two sections in the family, ConopIna and Myoprna, the former of which would contain the genera Conops and Pleurocerina, the latter the genera Zodion, Myopa, and Stachynia, 28 DIPTERA OF NORTH AMERICA. The N. A. species which I know belong to the genera: 1. Co- nops Linn., 2. Zopion Latr., 3. Myopa Latr., 4. Sracuynta Macq. Fam. XXIV. PIPUNCULIDAE. Charact.—Three basal cells much prolonged, the hindmost closed near the border of the wing; third longitudinal vein simple, the fourth sometimes almost entirely wanting, sometimes furcate when perfect ; no intercalary vein. Head almost entirely occupied by the eyes, front and face exceedingly narrow; antennz with a basal bristle. Hypopygium unsymmetrical. Tibiz without spurs; empodium wanting. This family only comprises the three genera: NEUROPHOCERUS Zett., Preuncutus Latr. and Cuauarus Walk. The N. A. species known to me belong all to the genus Pipuncutus Latr. Fam. XXV. SCENOPINIDAE. Charact.—Three basal cells very large; the third closed rather far from the border of the wing; third longitudinal vein furcate; no inter- calary vein; third joint of the antenne without style or bristle. No empodium. This family possesses so many peculiarities that it is very difficult to find a fit place for it among the other families, though it ex- hibits much affinity with some of them. I would.especially point out the Bombylide as deserving a closer comparison in order to investigate their true relationship. At present it seems best to follow those authors who have considered the genus ScENOPINUS as the type of a separate family. Some species of Scenoprnus occur in N. A. Fam. XXVI. PLATYPEZIDAKE. Charact.—Three basal cells rather large, the hindmost always ending acutely, at more or less distance from the border of the wing; third longitudinal vein simple; no intercalary vein. Antenne with an apical bristle. Hypopygium symmetrically turned under the abdo- men. Middle tibize with spurs; empodium wanting. The genera which belong to this family are: PLatypeza Metg., CaLLomyia Metg., OpetiA Metg., and PLhaTyoneMa Zett. LONCHOPTERIDAE—H-YBOTIDAE. 29 T know only one species of PLATycNEMA, one species of CALLO- MYIA, and two species of PLaryprza occurring in N. A. Fam. XXVII. LONCHOPTERIDAE. Charact.—Three basal cells of moderate size, of nearly equal length; fourth longitudinal vein furcate and united with the fifth near the base. - Antennz with an apical bristle. Empodium wanting. This family is also founded on a single genus which cannot be placed in any other family. Though in Loncnoprera the basal cells are by no means large, yet their structure and the great deve- lopment of the sixth longitudinal vein seems to prove that this family should be reunited with one of those already mentioned. However, by the form of its neuration and its anal parts it differs so widely from them, that it is very difficult to state in what their affinity consists. Mr. Walker has lately added the genus CADREMA to the family of Lonchopteride. LoncHopTERA is found in N. A. Fam. XXVIII. HYBOTIDAE. Charact.—Three basal cells complete, rather large, the third only a little shorter than the second; posterior transverse vein of the base generally running perpendicularly or at a somewhat acute angle into the sixth longitudinal vein, and thus not being parallel to the posterior border of the wing; third longitudinal vein frequently furcate; anterior intercalary vein often wanting, posterior never present. First joint of the antenne not much shortened, the third more frequently with a bristle than with a style, the bristle some- times dorsal instead of being apical. Empodium membranaceous and linear. , The three families: Hybotide, Empide and Tachydromidz run into each other so insensibly, that it is very difficult to indicate sharp limits between them. If we select this or that character as being of greater importance, we shall always obtain a different result as to these limits. I maintain the family Hybot¢de only with the view of falling in with the usual arrangement, since I am fully satisfied that there is no sharp limit to be drawn between it and that of the Hmpide. + For neither the more convex thorax, nor the horizontal direction of the proboscis, nor the form and position of the palpi, nor the simplicity or furecation of the third longitudi- 80 DIPTERA OF NORTH AMERICA. nal vein, nor the presence or absence of the anterior intercalary vein are characters, on which—whether we use them singly or in any combination—we can found a satisfactory or sharp defini- tion of both families. The resemblance of some Hybotide with some Bombylide cannot be denied, but their place will never be doubtful if we consider, that in the Bombylidz the third basal cell is open or only closed near the border of the wing, while in all Hybotide it always remains remote from that border. To the family Hybotide may be-referred: BracnystoMA Meig., Hysos Fabr., Synecures fal. (= Pterospilus Rond. = Harpamerus Big.), SynpyAs Loew, Srenoprocrus Loew, AcartERus Loew, Mecuyrervs Loew, OEDALEA Meig., EUTHYNEURA Macq. (= An- thalia Zett.), OcypRomIA Metg., TRICHOPEZA Fond. on account of of its near relation with Brachystoma and LepropezA Macq. on account of its resemblance with Ocydromia, The two last genera might as well be placed among the Hmpide, since they agree with them in having the posterior basal transverse vein parallel to the border of the wing. The N. A. species which I possess belong to the following genera: Bracuystoma Metg., Hysos Fabr., Synecues Walk., Synpyas Loew, and Lepropeza Macg. Mr. Walker also describes a species which he believes to belong to the genus OcyDROMIA JMevg. Fam. XXIX. EMPIDAE. Charact.—Three basal cells complete, rather large, the third shorter than the second ; posterior basal transverse vein parallel to the border of the wing; third longitudinal vein frequently furcate; anterior in- tercalary vein present, the posterior wanting. First joint of the antenne not much shortened, third joint with an apical bristle sometimes resembling a style. HEmpodium membranaceous and of a linear form. The genera belonging to this family are: Empis Jeig., Pacuy- MERIA Macg., ER1I0GASTER Macg., APLOMERA Jacg., RHAMPHO- MyIA Metg., Hara Metg., Racas Walk., GuomA Metg., Mrcro- PHORUS Macq., HonMOPEZA Zett., ITEAPHILA Zett., MICROSANIA Zett., and Cyrtoma Deig. The N. A. species known to me belong to the genera: Empis Meig., PAcHyMERIA Macg., RoampuomyiA Veig,, Hmara Meig., TACHYDROMIDAE. 31 and CyrtoMaA Meig. Mr. Walker records a N. A. species belong- ing to the genus GLomA WMetg. Fam. XXX. TACHYDROMIDAE. Charact.—The hindmost basal cell not always present, the second basal cell sometimes coalescent with the discal cell; when present they are of a tolerable size, but the hindmost is always remote from the border of the wing; third longitudinal vein sometimes furcate; an- terior intercalary vein sometimes present, the posterior never. First joint of the antenne very much shortened so that the antenne may easily be taken for biarticulate. Empodium membranaceous and of a linear form. To this family belong the genera: HEMERODROMIA MVezg. with CuyroManNtis Fond. and MANTIPEZA Fond., PHYLLODROMIA Zett., TacuyproMiA Fabr., DryopromiA fond., ELAPHROPEZA Macq., Piatrypatpus Macg., PHoroxypHa Rond., Sctopromia Hal. (= Microcera Zett.), ARDOPTERA Macq. (= Leptosceles Hal.), Citno- cERA Mezg., with which Heteopromia Hal. (= Paramesia Macq.,) and WIEDEMANNIA Zett. may be properly reunited. As genera occurring in N. A. I enumerate: HEMERODROMIA Meig., TacuypromiA Fabr., PiLatypatpus Macg., ARDOPTERA Macq., and Cuinocera Meig. If we may trust Mr. Walker’s statement, the genus Drapertis Wezg. also occurs in N. A. Observation.—With the Tachydromide ends the series of those families of Brachycera which in the greater development of their basal cells differ from the following, and, with the exception of the Lonchopterid, form a rather natural series, if a linear arrangement may be spoken of as a natural one. The peculiarities, which also characterize this series of families, and any of which, combined with that just mentioned, suffice to place a family under this head, are the following: 1. the third joint of the antenn is composed of a number of joints more or less soldered together; 2. the third longitudinal vein is furcate; 3. one intercalary vein or both are present; 4. the empodium is considerably developed. These pecu- liarities characterizing the whole series of families hitherto spoken of are much lessened in the Hybotide and Empide, and still more so in the Zachydromide. Teeniaptera, Dacus and other genera with the third basal cell more developed, are placed by most of the authors lower down in the series of families which follow. In 32 DIPTERA OF NORTH AMERICA. order to retain the accustomed arrangement as much as possible, I shall leave them in their usual places, though it would seem, that a more natural arrangement might be obtained, were they added to the above families which have the basal cells prolonged. Fam. XXXI. DOLICHOPODIDAE. Charact.—First basal cell rather short, the second united with the discal cell, the third small; auxiliary vein running in the first longitudi- nal vein; third longitudinal vein simple, the fourth sometimes fur- cate; no intercalary vein. Hypopygium symmetrical, bent under the abdomen. Empodium small, membranaceous, of a linear form. The principal genera are: Pstnopus Meig., Sypisrroma Mezg., Hyporuyiius Hal,, Hercosromus Loew, HyGroceLEuTHUS Loew, Do.icnopus Metg., TACHYTRECHUS Stann., ORTHOCHILE Latr., GYM- NOPTERNUS Loew, LyronruRUS Loew, PLAGIONEURUS Loew, LiAN- caLus Hal., Scettus Loew, HypropHorus fall., CAMPSICNEMUS Hal., Tutnopuitus Wahlb., Preopes Loew, AcHatous Hal., Sys- TENUS Loew, SYNTORMON Loew, SYNARTHRUS Loew, PORPHYROPS Meig., Raapnium Jetg., XipHANDRIUM Hal., HALTERICERUS Rond., Smiuiotus Loew (= Macherium Hal.), Arcyra Macgq., LevcostoLa Hal., Nematoproctus Loew, Saucropus Loew, XAN- THOCHLORUS Loew, Sympycnus Loew, TEUCHOPHORUS Loew, ANEP- sius Loew, Eutarsus Hal,, DiapHorus Meig., Curysotus Jezg., Curysotimus Hal., MeprErerus Msch., APpHRosyLus Lal. The N. A. genera which I am acquainted with are: PsiLopus Meig., Hye@roceLevutuus Loew, Doticnopus Meig., TACHYTRECHUS Stann., GYMNOPTERNUS Loew, PLAGIONEURUS Loew, LIANCALUS Hal., Scrttus Loew, Campsicnremus Hal., Synarturus Loew, Porpuyrops Metg., ARayRA Macg., LeucostoLa Hal., SAUcROPUS Loew, XantTHocHLoRUS Loew, DiapHorus Jeig., LyRonEURUS Loew, Curysotus Metg., and Mepreterus Lisch. Fam. XXXII. OESTRIDAE. Charact.—Antenne inserted in rounded pits ; the middle part of the face exceedingly narrow ; the opening of the mouth very small; the oral organs rudimentary. Tegule large. This family has often been considered as very distant from the fol- lowing, but the late discoveries have brought to light forms which DEXIDAE. ao are more nearly related to them. The following genera may be taken for those which constitute the family: TrypopERMA Weed. (= Cuterebra Clark), CepHatomyta Latr., CEPHENEMYIA Latr., HypopermMa Clark, Gastrus Metg., AULACEPHALA Macq. and CTENOSTYLUM Macq. A thorough limitation of these genera is still wanted, and the name of Cestrus, instead of being dropped, as we see it done by some authors, may perhaps be again restored to its former rank. I have seen N. A. species of the genus TRypopERMA, and others of the genera CEPHALOMYIA and GASTRUS, introduced in America from Europe. There is no doubt that species of HypopmrMa occur there also. Fam. XXXIII. DEXIDAE. Charact.—Bristle of the antenne hairy or pectinated. Thorax short. First posterior cell of the wing slightly opened, sometimes closed. Tegule large. Legs long. The family Dexide agrees with the Tachinide, Sarcophagide, Muscidx, and Anthomyide, in having the tegule larger than any of the following families of the Brachycera. These five families have been therefore united under the name of Muscarizx calyptrate, and contrasted with the following, called Muscarix acalyptrate. There is no possibility, it seems, to discover any other constant character; that which appears the most serviceable was pointed out to me by Mr. Haliday; it is the transverse suture of the thorax being usually of the same depth on its whole extent in the Muscartz calyptrate, whereas in the Muscarizx acalyptrate it is generally distinct at each side and imperceptible on the middle of the thorax. But as some families among the so-called Musca- rice acalyptrate have the tegulz so well developed as to resemble those of many Anthomyidx, a high importance cannot be attached to that subdivision. Should it be maintained, the Oestridx ought to be placed among the Muscariz calyptrate. The four families: Dexidex, Tachinidx, Sarcophagidx, and Mus- cide, agree in the first posterior cell being very much narrowed or closed at the end, and differ in this from the family Anthomyide. The former have, for this reason, been comprised under the common name of Creophile, in opposition to the latter, which 3 Ore DIPTERA OF NORTH AMERICA. received the name of Anthophile. 'The differences in the organi- zation of the Muscariz calyptrate are much smaller than those of any two families among the first series of Diptera brachycera, which ends with the Zachydromidz, with the sole exception of the group formed by the Hybotide, Hmpidee, and Tachydromide, in which a similar relationship exists. Consequently the families in question here owe their existence much more to the immense number of species and genera than to a real necessity, based on differences of structural characters. Hence it is much more diffi- cult to define their limits, and one must already be well acquainted with a great number of forms, in order to attempt to point out with certainty the right place for new ones. In the limitation of these families I have made use of what has been said about them in Walker’s British Diptera; for however insufficient I may find it, I know of nothing better to be put in its place. In the family of Deaxtdz a number of genera have been already formed; as they still require considerable sifting and a much sharper limitation than they have at present, it seems useless to enumerate them here. The N. A. Dexide known to me cannot all be placed in the genera hitherto erected. The species about whose position there is no doubt belong to the genera: Prosena St. Yarg., MicroPa- THALMA MMacg., Dinera Fob. Desv., and EstuEerta Rob. Desv. There is also no doubt about TricHopuRA Macq. and MEGAPROSO- pus Macq. occurring in N, A. Fam. XXXIV. TACHINIDAE. Charact.—Bristle of the antenne# bare or with a very short pubescence. Thorax short. First posterior cell closed or only slightly opened. Legs short. The immense extent of this family renders the formation of sec- tions indispensable. It is best divided into four sections, which might perhaps be raised into families. The two first of them are the Zachinina and Ocypterina, both of which differ from the two last by their abdomen being beset with long bristles. AJ] TAcHININA have an oval abdomen, or when it is nearly cylindrical, its first segment is much shortened. The abdomen of the OcypreRina is always of a slender cylindrical form, and its first segment elongated. SARCOPHAGIDAE—-MUSCIDAE, 35 The third section, the GyMNosomINA, has a broad front and a vaulted abdomen. ‘he fourth is that of the Paasina, having a very narrow front and a flat abdomen. My knowledge of the N. A. Tachinide is a very incomplete one. I know, however, the following genera: I. Zachinina: 1. DEsEANIA Rob, Desv., 2. Ecutnomyta Metg., 3. JurtnEA Rob. Desv., 4. Hysrricta Macg., 5. Micropatpus Macq., 6. Gonta Meig., 7. NemorZa Job, Desv., 8. BLEPHARIPEZA Macgq., 9. Betvorsta Lob. Desv., 10. Tacnina Metg., 11. Curysosoma Macq., 12. Meropra Meig., 13. MitrogRaAMMA Meztg., 14. InnicgerA Pob. Desv., 15. MasicerA Macq. Il. Ocypterina: 16. Ocyprera Latr. III. Gym- nosomina: LT. GYMNOSOMA Jall. IV. Phasina: 18. Puasta Latr. 19. HyaLomy1aA Macqg., 20. Trichopopa Latr. Fam. XXXV. SARCOPHAGIDAE. Charact.—Bristle of the antenne plumose or hairy, with the apex bare. First posterior cell only slightly opened or else closed. Tegule large. Legs stout. All the N. A. species I have seen belong to the genera: SARco- PHAGA Metg., PHryssopopa Rob. Desv:, and Cynomy1a Mezg. Fam. XXXVI. MUSCIDAE. Charact.—Bristle of the antenne entirely plumose or pectinated. Body never slender; thorax short. First posterior cell only slightly _ opened or else closed at the border of the wing. Tegule large. Legs stout. This family contains two sections: the Muscina with plumose antenne, and the Sromoxyna with pectinated antenne. The N. A. species which I have examined belong to the genera: Musca Linn., Pottenta Rob. Desv., CyrtonEuRA Macg., PYREL- LIA fob. Desv., Luciita Rob, Desv., CattirHorA Macq., and Sromoxys Geoffr. The number of species which N. A. has in common with Europe is exceedingly striking in this particular family. 36 DIPTERA OF NORTH AMERICA. Fam. XXXVII. ANTHOMYIDAE. Charact.—Thorax with a complete transverse suture. Fourth longitudi- nal vein straight or nearly so, hence first posterior cell fully open. Tegule rather well developed, though in many cases of no large size. The riches of the N. A. Fauna in this family have been very little explored. I know species of the following genera only: - AntHomyIA Metg., Homatomyta Bouch., Hytemyia Macqg., ARI- ora Rob. Desv., Lispe Latr., and Canosta Meig. The notices of Mr. Walker about the occurrence of some species of Hriphia and of one Dialyta appear to me very uncertain. Fam. XXXVIII. CORDYLURIDAE. Charact.—Neuration of the wings complete; both posterior basal cells of considerable size; auxiliary vein well separated from the first lon- gitudinal vein; first longitudinal vein bare. Whole lateral border of the front bristly; anterior border of the mouth with strong, usually numerous vibrisse. Tibise with spurs. With the Cordyluride we begin that division of Diptera which is called acalyptratx, and the systematical arrangement of which is still and will be an unsolved problem, till their structure has been much more thoroughly studied than has been hitherto the case. In the present state of our knowledge their subdivision into a greater number of families seems to be the most advisable course to pursue. As for their exterior, the Cordyluridz mostly approach to the Anthomyidee, and namely to the species of the genus Coenosia, but the smaller size of their tegule and the less incomplete develop- ment of the transverse suture on their thorax serve to distinguish them. On the other side they are closely allied to the Helomyzide, ' in which, however, the front bears bristles on its upper half only, the two posterior basal cells are smaller, and the costa of the wings is always bristly. N. A. possesses species of CorpYLURA, some of them very inter- esting, and a number of ScaropHaAGa& among which several coin- cide with European species. HELOMYZIDAE—SCIOMYZIDAE. 37 Fam. XXXIX. HELOMYZIDAE. Charact.—Neuration of the wings complete; costa bristly; first longitudi- nal vein not abbreviated, but bare; the auxiliary vein is often rather approximated toit. Front bristly on its upper half only; a stout bristle at each side of the anterior border of the mouth. All the tibie with spurs and outwards before their tips with a more or less developed erect bristle. The close relation of the Helomyzidx to the Cordyluridx in- duces me to assign them a place here, although the consideration of the smaller size of their two posterior basal cells would remove them to a more distant place, in the neighborhood of the Geomy- vide and Heteroneuride. In fact both families are related to the Helomyzide ; but they differ from them by their having the first longitudinal vein abbreviated and the auxiliary vein lying close by it, and besides the Heteroneurtde have the peculiarity of the costa of the wings being without bristles. The known N. A. species belong to the genera HELomyza and Scua@nomyza. Some of them are likewise identical with European species. Fam. XL. SCIOMYZIDAE. Charact.—Neuration of the wings complete; two posterior basal cells of rather considerable size; auxiliary vein well separated from the first longitudinal vein. On the lateral border of the front before the vertical bristles there are two bristles, one behind the other; face proportionately long without distinct furrows for the antenne ; bor- der of the mouth sharp, without vibrisse. Middle tibize with a greater number of bristles at the tip; all the tibie on the outside before the tip with a small upright bristle. I know N. A. species that belong to the genera SrpEpon, TETA- NocERA, and SciomyzA. Some of them are most nearly related to European species, others seem altogether identical with them. If we place, and we may well justify our doing so, the genus Dryo- MYZA among the Sciomyzidex, it must also be named as a genus represented in N. A.; one of the two species of this genus occur- ring there does not seem to differ from the European Dryomyza anilis Fall. The genus Acrora Metg., which agrees with the Sciomyzide in many characters, may be referred to them without any great difficulty; but on account of its deviation in the struc- 38 DIPTERA OF NORTH AMERICA. ture of the face, the character of the family would have then to be slightly altered. Mr. Walker has described a N. A. species which he contends to belong to AcTORA. Fam. XLI. PSILIDAE. Charact.—Body elongated, with short hairs and almost without bristles. Neuration of the wings complete; the auxiliary vein lies close by the first longitudinal vein, but diverges from it at its end and runs towards the border of the wing; by a transverse fold most charac- teristic in this family running from the tip of the auxiliary vein as far as the base of the third posterior cell, the outward end of the auxiliary vein is obliterated; the posterior basal cells are very large. Front with only a few bristles in the neighborhood of the crown; face receding; opening of the mouth small and with no Pristles at its border. Only the middle tibie have spurs, and all the tibiz are without erect bristle on the outside. This family is represented in N. A. by the genera Loxocera, Psina, and CuynizaA. The N. A. species, which induced Mr. Walker to form a new genus Prochyliza, placed by him close by Chyliza, belongs to some other family. Fam. XLII. MICROPEZIDAE. Charact.—Body slender, elongated, with very short hairs and very scarce bristles. Legs proportionately short; only the middle tibie have spurs, these being generally very small and weak; no small erect bristle on the exterior side of the tibie. Neuration of the wings complete ; first longitudinal vein bare; the auxiliary vein is very close by it and diverges from it towards its end only; the two posterior basal cells are very large. Front with some bristles in the neighborhood of the crown only; bordering of the mouth without vibrisse. Last segment of the abdomen of the female prolonged into a blunt, cylindrical tube. The family Mcropezidxe comprises genera which differ among each other, both in the form of the head and the structure of the antenne and oral parts. The head is sometimes rounded, some- times more elongated; the bristle of the antenne is generally dorsal, but in some genera apical; the clypeus sometimes very much de- veloped, sometimes only rudimentary; the palpi sometimes large, sometimes small, but never rudimentary. The clypeus being very | much developed and the proboscis very much thickened in the ORTALIDAE. 39 genus Teeniaptera Macq., this family approaches so much to the Ortalide, that the bareness of the first longitudinal vein, the difference in the structure of the female ovipositor, and the corre- sponding difference in the structure of the male appendages, must be considered as the chief characters, which distinguish it from them. The Sepszdzx, too, are rather nearly related to the Mcro- pezidex, but are distinguished from them not only by the structure of the female ovipositor, but also by their palpi being always rudi- mentary. The N. A. species I know of are: one true CALOBATA, nume- rous T@NIAPTER®, and two MicropEzm®. Whether the N. A. species which Mr. R. Desvoidy refers to the genus NeErivs, really belong to it, appears to me most doubtful, as they seem to be Teniaptere all together. The genus Lissa Meg. occurring like- wise in N. A., in most characters agrees with the J/cropezide, and may provisionally be placed among them, till a more convenient place in the system will be pointed out for it. The genus EuME- ropra erected by Mr. Macquart on a N. A. species, is also related to the latter, and may likewise obtain here a provisional place. Both these genera differ from the great bulk of the Mcropezide by having the legs less slender, the tarsi less abbreviated, and the last segment of the abdomen not prolonged so as to form a cylin- drical tube. Fam. XLII. ORTALIDAE. Charact.—Neuration of the wings complete ; auxiliary vein separated from the first longitudinal vein and running to the border of the wing in the usual way, under an acute angle and remaining perfectly distinct in its whole length; third longitudinal vein generally with coarse hairs ; two posterior basal cells large, and the outward one frequently prolonged in an acute angle. Front with bristles on the upper part only; no vibrisse at the border of the mouth; clypeus commonly very much developed, and proboscis often very much thickened. Middle tibie alone with spurs; no tibie with an erect bristle on the exterior side before the tip. Ovipositor of the female rather flattened and horny, consisting of three elongated segments, forming three drawers like those of a telescope, and end- ing in a simple point. The family of Ortalide is exceedingly rich in variously shaped organizations, which caused a considerable increase of genera in 40 DIPTERA OF NORTH AMERICA. it. Unfortunately most of them are founded on characters so va- riable that they are of very little use, and it seems best to retain the old ample genera. We feel the more compelled to do so, as many species existing in N. A. cannot be referred to any of the modern genera. The whole of the Ortalide may conveniently be divided into two sections: the first, which may be named TEraNopINa, has the front more prominent, the face receding, the opening of the mouth rather small, the clypeus less developed, and the proboscis less thick ; in the seeond, the OrraLina, the front is not prominent, the clypeus very much developed, the opening of the mouth much wider, and the proboscis much thicker. The N. A. Fauna possesses in Pyrcora a genus of the first sec- tion, particularly striking, and even somewhat deviating. Among the other N. A. Ortalide known to me there is only one species belonging to CEPHALIA, whereas all the rest belong to the genus Ortatis, if we take it, as Meigen did, in a wider sense, and are distributed especially among the genera Ceroxys, Ortalis, Rivellia and Delphinia, of modern authors. Fam. XLIV. TRYPETIDAE. Charact.—Neuration complete; the end of the auxiliary vein runs steeply to the border of the wing and becomes obsolete; first longitudinal vein always with bristles, the third frequently, the fifth sometimes ; two posterior basal cells rather large, the hindmost is often prolonged to a point. Front on each side with two rows of bristles, one of which is more above and interiorly, the other below and exteriorly. Border of the mouth with no vibrisse. Clypeus none or rudimen- tary. Proboscis never incrassated. Only the middle tibie with spurs; all tibiae without erect bristle on the outer side before the tip. Ovipositor horny, consisting of three elongated retractile segments like the drawers of a telescope, the last of which ends in a simple point. They are divided into two sections, DAacinA and TRYPETINA. In the former the female abdomen, before the ovipositor, has ap- parently only four segments, the fifth segment being diminutive and entirely concealed under the fifth; in the Zrypetina the five segments are all equally developed. As the Dacina, represented in Europe only by Dacus Olea, LONCHAEIDAE—SAPROMYZIDAE. 41 which lives on the olive-tree, and Petalophora capitata, exclusively dependent on the lemon-tree, are in all respects strangers in the European Fauna, so they appear to be no natives of N. A.; no species of this division has hitherto been noticed there. The Z7ry- petina, on the contrary, are represented there by numerous, partly very handsome species, all belonging to the genus TRYPETA in Meigen’s and Wiedemann’s sense. Fam. XLV..LONCHAEIDAE. Charact.—Neuration complete; the auxiliary vein runs to the border of the wing in the usual way, under an acute angle and without be- coming obsolete, and is very near to the first longitudinal vein; this vein is bare ; the two posterior basal cells are small. Front at each side with a single row of bristles; border of the mouth with- out vibrisse ; clypeus rudimentary. Middle tibiz with spurs; all tibie without erect bristle on the exterior side before the tip. The ovipositor of the female consists of three joints and is rather horny, quite flattened, and ends in a simple point. They are divided into the PALLOpTERINA having more slender legs and a broader front, and the Loncuarna with stouter legs and a inore narrow front. There is only one species in N. A., that I know of, belonging to the genus PALLOPTERA: of the second division I have several species of Loncuaa, a part of which seem.to be identical with European species. Fam. XLVI. SAPROMYZIDAE. Charact.—Neuration complete; auxiliary vein of the usual structure, fre- quently very much approximated to the first longitudinal vein ; costa of the wings without bristles or marginal spine ; longitudinal veins without peculiar hairs; posterior basal cells small. Front with a single row of bristles on each side ; no vibrissz on the border of the mouth; clypeus rather rudimentary. Only the middle tibie have terminal spurs; all tibie with a small erect bristle on the exterior side before the end. Ovipositor of the female not horny. N. A. has numerous species of the genera SaproMyza and LAUXANIA, and a few species belonging to Pacuyorrina Macq., a genus detached from Lauxania, 42 DIPTERA OF NORTH AMERICA. Fam. XLVII. PHYCODROMIDAE. Charact.—Thorax, scutellum and abdomen flat; pleurze excised above the coxee. Front bristly; border of the mouth hairy, with no distinct vibrisse. Legs stout, tibie with spurs and each with an erect hair or small bristle on the outside before the tip; the first joint of the posterior tarsi not abbreviated ; last joint of all tarsi enlarged, with stout claws and long pulvilli. Neuration of the wings complete; auxiliary vein distinct in its whole length; costa without bristles ; basal cells not small. A certain resemblance with the Borboride can by no means be overlooked; however, the Phycodromide are readily distinguished by the completeness of the auxiliary vein, the absence of the vibrissz so remarkable in those, by the first joint of the posterior tarsi not being abbreviated, and by the increased size of the last joint of all tarsi. They appear to have more true relation to the Helomyzide, but from these too they are sufficiently distinguished by the costa of the wings having no bristles and the border of the mouth having close hairs, but no real vibrissee. Of this family I have seen only one Ca@Lopa captured in N. A. It was remarkable by the exceedingly strong spines of its legs. Fam. XLVI. HETERONEURIDAE. Charact.—Neuration of the wings complete, but the first longitudinal vein rather short, and the auxiliary vein very mu¢h approximated to it; costa without bristles; basal cells small. Front with long bristles ; border of the mouth with a vibrissa at each side; clypeus not deve- loped; palpi broad and proportionately large. Legs, and especially the tarsi, slender ; middle and posterior tarsi with spurs; all the tibiz without erect bristle on the exterior side before the tips; claws and pulvilli very small. I know five N. A. species of this family, four of which belong to the genus Hereronreura Mezg.; the fifth cannot be conveniently placed in any of the genera as yet established. OPOMYZIDAE—SEPSIDAE. 43 Fam. XLIX. OPOMYZIDAE. Charact.—Front with stout bristles above; clypeus rudimentary ; border of the mouth either pubescent or with long hairs, the foremost of which sometimes forms a distinct vibrissa. Proboscis short; palpi rather small. Middle tibie with a distinct, posterior tibie with a very short spur; the exterior side of the tibize without erect small bristle before the tip; claws and pulvilli small. Wings elongated and narrow, with no bristles at.the costa; the axillary incision and alule are either wanting or very diminutive. First longitudinal vein much abbreviated ; the auxiliary vein becomes obsolete before reaching completely the first longitudinal vein; the latter emits, shortly before its end, towards the costa, a branch, which may be considered as the end of the auxiliary vein; basal cells small. No species belonging to this family has as yet been noticed in N. A. Fam. L. SEPSIDAE. Charact.—Head rounded ; front bristly; border of the mouth more or less hairy, the foremost hair often imitating a vibrissa; clypeus rudi- mentary; proboscis short; palpi exceedingly small or wanting. Abdomen tapering towards the base. Middle tibiz with distinct spurs; claws and pulvilli small. Neuration of the wings complete; the auxiliary vein distinctly separated from the first longitudinal vein; the two posterior basal cells rather large. The most essential character of this family is the rudimentary condition of the palpi. With this exception its characters are rather similar to those of the MZicropezide. The genus Cephalia approaches very much the Sepside@ in structure, but its incrassated proboscis, its large and broad palpi, and its considerably developed clypeus prevent it from being reunited with them; it must, there- fore, remain among the Ortalide. The species of Sepside occurring in N. A. belong to the genera Nemoropa and Sepsis, and are, in part, identical with European species. 44 DIPTERA OF NORTH AMERICA. Fam. LI. DIOPSIDAE. Charact.—Neuration of the wings incomplete from the absence of the foremost of the two small basal cells; the auxiliary vein very much approximated to the first longitudinal vein. Head prolonged in two lateral apophyses bearing the eyes; front bristly only on the upper part; border of the mouth with no vibrissz. Anterior femora incrassated. One species, or—if the second one, described by Dr. A. Fitch, should really prove different—two species of the genus SPHYRACE- PHALA Say have hitherto been found in N. A. Fam. LIT. PIOPHILIDAE. Charact.—The auxiliary vein, on its whole length, is coalescent with the first longitudinal vein; with this exception the neuration of the wings is complete. Front with some small bristles above only ; bor- der of the mouth with a vibrissa on each side; clypeus rudimentary; legs rather stout, almost of the structure of those of the Sciomyzide ; middle tibiz with spurs; all the tibiz without erect bristle on the exterior side before the tip. The three N. A. species of P1opu1ia which I have seen are quite identical with European ones; a fourth differs so much from all the known Piophile in the form of the head and the structure of the antenn, that it must be considered as the type of a new genus. It seems to be the same species on which Mr. Walker has founded his genus Procuy.iza; if that be really so, he would, by assigning it a place immediately by Ohyliza, have shown that he had been fully mistaken about its true relation. Fam. LUI. EPHYDRINIDAE. Charact.—Face convex, with no distinct furrows for the reception of the antenne and without vibrisse, though frequently beset with hairs or bristles ; clypeus very much developed; opening of the mouth large; proboscis incrassated with a swollen chin. Neuration of the wings incomplete; the auxiliary vein distinct only at its base; the fore- most of the two small basal cells reunited with the discal cell. Middle tibie with spurs. They are divided into three sections: Wotiphilina, Hydrellina, and Hphydrina. The Notiphilina are characterized by the second GEOMYZIDAE—DROSOPHILIDAE. 45 joint of the antenne being unguiculate. The Hydrellina and Ephydrina, in which that joint is not unguiculated, differ from each other by the former having the eyes hairy and the latter bare. The N. A. species hitherto recorded have been so badly charac- terized that there is no possibility to decide to which section, and of course far Jess to which genus they belong. The species which IT am acquainted with and have described in the following pages, are distributed among the three above named sections as follows: I. Notiphilina: 1. Dicumra Meig. with two European species ; 2. Norrpuina Fall. five species; 3. PARALIMNA Loew, one species; 4. Psttopa Fall. five species; 5. Discocrerina Macg. five species. II. Hydrellina: 6. HypREwuia Desv. six species; 7. PHILYGRIA Stenh. three species. III. Hphydrina: 8. Ocutusra Latr. four species, one of which is identical with a European species; 9. BRACHYDEUTERA Loew, one species; 10. PArypra Stenh. two species; 11. Epnypra Fall. one species; 12. ScarerLa Desv. three species, one of which cannot be positively distinguished as yet from a European species. Fam. LIV. GEOMYZIDAE. Charact.—Front with stout bristles above; border of the mouth with vi- brisse. Clypeus rudimentary. Middle tibize with spurs; all the tibie with a small erect hair on the exterior side before the tip. Wings with bristles on the costa; first longitudinal vein exceed- ingly abbreviated, and the auxiliary vein so approximated to it that it is distinctly separated from it only towards the base; the two posterior basal cells very small. I know only one species of this family indigenous in N. A. and belonging to the genus Diastara. Mr. Walker records an insect which he believes to be likewise a Diastata. Fam. LY. DROSOPHILIDAE. Charact.—Front with bristles above; face with distinct sub-antennal fur- rows; at the border of the mouth there is a feeble, frequently rather indistinct small vibrissa. Middle tibize with very feeble spurs; on the exterior side of the tibiz there is either a very small or no erect bristle before the tip. Wings without bristles on the costa; the 46 DIPTERA OF NORTH AMERICA. first longitudinal vein is exceedingly abbreviated; of the auxiliary vein there is only a rudiment; the discal cell is usually, but not in all genera, united with the foremost of the two small basal cells. Claws and pulvilli very small. Numerous species of DrosopHiua are found in N. A., some of which are perfectly identical with European species, and one StTE- GANA, the difference of which from the Huropean Stegana hypoleuca is at least liable to doubt. Fam. LVI. OSCINIDAE. Charact.—Front without bristles, the crown having only a few short ones; border of the mouth without vibrisse, which, however, are repre- sented sometimes by a small hair on each side. Middle tibie with small spurs; all the tibiz without erect bristle on the exterior side before the tip. Costa of the wings without bristles. The auxiliary vein is completely wanting; the anterior of the two small basal cells is united with the discal cell, the posterior one is totally wanting. The N. A. species of this family known to me are distributed among the genera CHLOROPS, CRASSISETA, SIPHONELLA, MEROMYZA, and Oscinis. The species described by Wiedemann under the name of Homalura plumbella likewise belongs to the genus Sipho- nella, Macquart has established a genus, KCTECEPHALA, on a N. A. species, and he says it is nearly related to Platycephala and Hurina; if that is really the case, it must also be recorded here. Fam. LVII. AGROMYZIDAE. Charact.—Front with strong bristles; border of the mouth with a vibrissa on each side. Middle tibiz with a terminal spur; all the tibize on the exterior side without erect bristle before the tip. Wings with- out bristles on the costa; first longitudinal’ vein very short, and the auxiliary vein connected with it at the tip; basal cells existing, but small; posterior transverse vein generally far distant from the bor- der of the wing. The N. A. species which I have seen belong to the genera AGro- MYZA, LoBIoprera, and MILICHIA. aa PHYTOMYZIDAE—ASTEIDAE—BORBORIDAE—PHORIDAE, 4T Fam. LVIII. PHYTOMYZIDAE. Charact.—Front bristly; border of the mouth with vibrissz on each side. Middle tibiz with spurs; all the tibize without erect bristle on the exterior side. Wings without bristles on the costa; first longitu- dinal vein very short; auxiliary vein connected with it at the tip; basal cells existing, but small; posterior transverse vein wanting. The genus Puyromyza is represented in N. A. Fam. LIX. ASTEIDAE. (Vharact.—Front bristly above; border of the mouth with a vibrissa at each side. Middle tibiz with spurs; all the tibiae without erect bristle on the exterior side. Wings without bristles on the costa; first longitudinal vein exceedingly short ; auxiliary vein connected with it only at the tip; second longitudinal vein very short; two posterior basal cells as well as the posterior transverse vein want- ing. No N. A. species of this small family is as yet known. Fam. LX. BORBORIDAE. Charact.—Thorax, scutellum, and abdomen flat; front bristly; face exca- vated, with a vibrissa on each side of the border of the mouth; clypeus developed; first joint of the posterior tarsi abbreviated. Neuration of the wing incomplete, only a commencement of the auxiliary vein being at best visible; the hindmost two basal cells are not complete in all genera. N. A. seems to possess numerons species of the genus Borgorus, which have not yet been carefully compared with the European species. One species taken in Cuba is identical with an African one. Fam. LXI. PHORIDAE. Charact.—Antenne apparently single jointed, with a long bristle. Wings with several stout veins running into the costa, and three or four weak ones, which run across the surface of the wings and are not completely connected with the hindmost of the stout veins, from which they appear to issue. Femora flattened. Many species of Puora seem to occur in N. A.; their form, as far as I am acquainted with them, differs in no way from that of the European ones. 48 DIPTERA OF NORTH AMERICA. IT li @©@ Rw Cr»: Fam. LXII. HIPPOBOSCIDAE. Charact.—Head flattened; first joint of all the tarsi, or at least of the an- terior and middle tarsi, abbreviated. N. A. possesses species of the genera Hippoposca Linn., MELO- pHaacus Latr., ORNITHOMYIA Leach, and Otrersta Weed., several of which are perfectly identical with European species. + Fam. LXIII. NYCTERIBIDAE. Charact.—Head not flattened; first joint of all the tarsi rather long or very long, in comparison with the following. One STREBLA only and a species belonging to a new genus are known to me as occurring in N. A. EI; ON THE NORTH AMERICAN TRYPETIDAE, 1. Extent of the family TRYPETIDA. In stating that the family of Zrypetide comprises the genera Trypeta Meig. and Dacus Wied. we define its limits as exactly as is possible before having developed its character. The genus 7rypeta was founded by Meigen in Jlliger’s Magazine II, 277, 94. Shortly after, the same genus was published in Schrank’s Fauna Boica under the name of 7rupanea, and still later, it appeared in Latreille’s writings, in a more vague circum- scription, under that of Tephritis. The number of species belonging to it has so much increased since the time of its creation, and so considerable differences in their organization have been observed, that not only the limits of the genus have become a little uncertain, but also the necessity of a division into smaller genera was felt, and more than one attempt to satisfy this want has been made. The first attempt, abortive both from the choice of unfit charac- ters and from the vagueness of the observations used as foundation for the characters, was made by Robineau Desvoidy, who distri- buted the species known to him among the genera Lnsina, Stylia, ‘Oxyna, Oxyphora, Terellia, Forellia, Xyphosia, Sitaria, Orellia, Tephritis, Urophora, Actura, Prionella, Sphenella, Urellia, Acinia, and Neeta, to which his genera Acidia and Strauzia must be also added. Subsequently Macquart reunited these genera into five: Uropho- ra, Terellia, Tephritis, Acinia, and Ensina, to which he added the genus Ceratitis M’Leay, which he had previously described himself under the name of Petalophora. Later, in the “Diptéres exotiques,” he added Acanthoneura, Campylocera, Meracantha, Toxura, and Epicerella; the four last, however, if we may depend on his de- scriptions and figures, must be placed among the Ortalide. Mr. Walker, in the.“ List of the Diptera of the British Museum,” adopted the genera of R. Desvoidy, after modifying the characters t 50 DIPTERA OF NORTH AMERICA. of several of them, and retained the genera Anomoza and Luleia, which he had previously founded himself; besides, he erroneously brought again among the 7rypetide the genus Camptoneura, which Macquart had formed on 7rypeta picta Wied., and correctly placed among the Ortalide. The most recent attempt at a detailed classification of the Eu- ropean species of the old genus 7rypeta is that given by Rondani in his “Prodromus Dipterologie ttalice.” He retains—though in a much altered sense—the genera of R. Desvoidy: Oxyna, Uro- phora, Rivellia, Tephritis, Acinia, Actura, Terellia, and Orellia, and adopting the genus Ceratitis M. Lieay and Myopites Breb., he creates the following new genera: Goniglossum, Carpomyia, Cera- jocera, Chetostoma, Epidesmia, Myoleja, Spathulina, Dithryca, and Oplocheta. But these genera are less fit for reuniting what is really allied, than for isolating out of their nearest relationship such species as are distinguished by any specific peculiarity and for crowding them inordinately together. The dichotomic division of genera from single characters without any indication of the true generic distinctions, renders it impossible to refer to them the other species described by authors, and it is not at all sufficient for this purpose to name a typical species, especially as some of these typical species have not yet been described, and the correct- ness of the names of the others is not proved. Moreover, the characters ascribed by Rondani to the single genera are not all quite certain, and some of them, for instance the scutellum of Myoleja, which is said to have two bristles, the scutellum of Cera- titis six bristles, appear to be errors of the observer. If we add to what we have said already that the genera Xar- nuta, Themara, Calantra, and Aragara, erected by Walker in the ‘‘Proceedings of the Linnean Society,” with some probability belong here, and that perhaps the genus Dasyneura Saund., and Rachiptera and Hlaphromyia Bigot are Trypetide, both the va- riety of the forms belonging to the genus Zrypeta Meig. and a picture of the chaotic state into which their arrangement has been thrown will be sufficiently illustrated. The genus Dacus, restricted by Meigen to the Dacus Olee Fabr. (the renowned blight of the olive) and used by Wiedemann in a wider sense, is nearest related to the genus 7rypeta Meig. ; Fabricius, who formed this genus, comprises so different species in it that we may scarcely consider it as a creation of his. How- | | ee DIVISION OF THE FAMILY INTO TRYPETINA AND DACINA. 51 ever striking the difference may be between the greatest part of the species of Zrypeta and the larger naked species of Dacus, yet some of the latter approach very much to the larger species of the polymorphous genus Zrypeta, and show the near relation of both genera. Wiedemann, misled by some 7rypete, had become uncertain about the limits between the genera Dacus and Trypeta, or he would not have placed the large Brazilian 7rypeta parallela among Dacus. One of the surest marks for separating both gen- era is furnished by the structure of the female abdomen, which in Trypeta shows five, in Dacus four segments before the borer, the fifth being very short and concealed under the fourth. None of the other characters, however marked they may appear, is so con- stant as this. Macquart has already justly observed that the whole of the first group of Dacus Wied. is not only a stranger to this genus, but cannot even remain in the same family with it; therefore giving it the generic name of Senopterina (which must be mended into Stenopterina), he assigned it its right place in the Ortalide, as will be detailed in the sequel. Among the new gen- era introduced by Macquart, Leptoxys and Hnicocera, perhaps also Cardiacera, may be very nearly related to the genus Dacus, which cannot be, however, asserted positively, on account of the insuffi- ciency of Macquart’s statements and the incorrectness of his figures. The genus Bactrocera, founded by Guérin, seems also to belong here. The same, perhaps, may be said of the genera Rioxa and Strumeta, formed by Walker in the ‘‘ Proceedings of the Linnean Society,” while the genus Dasynewra of Saunders, which Walker in the ‘List of the Diptera of the British Museum” places near Dacus, seems to stand much nearer to Zrypeta. The species of the genus 7rypeta and those smaller genera which either have been comprised in Zrypeta or founded in its neigh- borhood, together with the species really belonging to Dacus and the smaller genera subordinate to or co-ordinate with it in a simi- lar way, form the family 7rypetide, one of the group of closely related families of the Acalyptera which are characterized by their corneous ovipositor. 2. Division of the family into TRYPETINA and DACINA. A division in two groups may be established as above indi- cated. The two groups would be: 7Zrypetina, with five distinct seements of the female abdomen, and Dacina, with apparently four 52 DIPTERA OF NORTH AMERICA. segments. The latter, moreover, have some peculiarities in the structure and neuration of their wings, which, however, allow of no very sharp limitation. Most frequently a dilatation of the second basal cell and of the space between the third and fourth longitudinal veins (in consequence of which the second longitudinal vein is pushed towards the costal margin) and the posterior angle of the anal cell extended in a long point, are the most striking peculiarities in the structure of the wings. But a sharp limitation of the two groups is perhaps not to be urged too much, as transi- tions from the one to the other are certainly not wanting, and another division quite as useful seems to be possible. In the mean time the groups Zrypetina and Dacina, as we have defined them, are characterized as well as our purpose requires. We have now to fix the relation of the family Zrypetide to the nearest families, particularly to that of Ortalide, since almost all authors have mixed the species of these two families. For this purpose we want only to find out the natural character of the family, which cannot be _ obtained but from a close examination of the greatest possible number of species and from a careful appreciation of the system- atic value to be assigned to the observed peculiarities and differ- ences. 8. Natural character. After examining nearly 300 species from different parts of the world, I believe I may speak as follows about the organization of the Trypetide. The bare eyes, in both sexes, are separated by the front, which is of equal breadth or only a little narrowed anteriorly. The mid- dle of the front is not sharply separated from the lateral lists, but has often a different color. The front is even, usually with an almost microscopic, rarely with a longer pubescence, sometimes it is totally bare. On its vertical border it always bears two very strong bristles, rather distant from each other. Two short callo- sities, usually little perceptible, run from them, converging but faintly anteriorly, and bearing one or two bristles directed upwards. On the vertical border itself there are two bristles, each near the upper angle of the eye, and in the middle behind the ocelli there is another pair of bristles, sometimes very stunted. This is also the case with a pair of bristles directed anteriorly, and inserted be- tween the ocelli. More anteriorly on the front there are, at each side NATURAL CHARACTER. we of the orbit, two or three stouter bristles, but generally less stout in the Dacina than in the 7rypetina, whereas in the males of some Trypetina they are thickened into spines, or even inserted upon lateral processes. The little crescent cut off by the frontal fissure is often very distinct, though never very large. The antenne are directed downwards, the third joint elongated or long; the bristle nearly bare, or with a very short pubescence ; only in a few spe- cies it has longer hairs, but is never pectinated. The face shows below each antenna a flat excavation, more deepened in those few species which have a keel in the middle of the face; the anterior border of these excavations forms a more or less distinct eleva- tion, and sometimes almost a keel. The cheeks are more or less hairy; in a few 7rypetina the furthermost hairs almost have the appearance of vibrissee, which, however, are never present. All more naked species have also less hairy cheeks. The proboscis is never much thickened; the suctorial flaps are sometimes very short and rather broad, sometimes rather long, sometimes of an extraordinary length, as for instance in the species of A/yopites Breb., where they seem to become much stouter, which was the reason why a species of Myopites was placed by Fabricius in Sto- moxys. The prolongation of the suctorial flaps is proportionate to that of the stem; not unfrequently in most nearly related species the structure of the proboscis seems to be very different; but on a closer examination this difference appears not to be essential, and cannoteven always be used in characterizing the small genera into which the genus Zrypeta Meig. has been divided. Among the Dacina I have never seen a species with a very prolonged pro- boscis. The oral cavity is large, sometimes very large and widened, and not seldom a little prolonged at its anterior border; its form depends very much on that of the proboscis; for in those species which have a very long proboscis, the anterior border of the mouth is usually also much more projecting. The palpi are either more applied to or more laid upon the labium, when it is retracted into the mouth-hole; their form is more or less spatulate, and generally more elongated in those species which have a long pro- boscis than in those with a short one. The clypeus owing its origin to a duplication of the skin which connects the stem of the labium with the border of the mouth is narrow, and being con- cealed within the mouth-hole can only be seen anteriorly in those 54 DIPTERA OF NORTH AMERICA. species in which the anterior part of the peristoma is more drawn upwards. There is no striking peculiarity in the structure of the thorax. The transverse suture, in agreement with nearly all the Acalyptera, is distinct in the neighborhood of the lateral border, and totally obsolete in the middle of the thorax. The bristles of the thorax not only offer good specific characters, but sometimes also prove very fit for the separation of genera. In, that respect the bristles of the middle of the upper side of the thorax deserve attention ; in those species in which their number is the most complete there are three pairs, one before the suture, the second behind the suture, the third a little before the scutellum. More frequently only the second and third pair of these bristles are present, sometimes only the third; in almost all African species of Dacus they are all wanting. Besides these bristles of the middle of the thorax there are two rows of bristles on each side; the exterior row consists of four bristles, the first of which stands on the humeral callosity, and is often wanting in the Dacina; the second has its place before the transverse suture ; the third, which is often much weaker than the others, in the lateral dilatation of the transverse suture; the fourth above and a little behind the base of the wing. The inte- _rior row consists of three bristles only, corresponding to the three last bristles of the exterior row, but is placed a little more back- wards than these. The seutellum, which is more or less convex, generally bears four stout bristles, but in many Dacina and some Trypetina only two; there is sometimes on each side a weaker bristle between the stout ones. The abdomen of the male shows only four distinct segments, the last of which is more or less elongated. The abdomen of the female has five segments before the borer, and the last of them in the Trypetina is always distinct, whereas in the Dacina it is very small, and so concealed under the fourth segment that the abdomen of the female seems to consist only of four segments. That seg- ment which is usually numbered the first, and will also be numbered so in the following descriptions, seems to be composed of two segments soldered together. In many Dacina we also see the next segments more or less completely coalescent on their upper side. The borer of the female is always of a corneous substance; it is formed of three segments, which are retractile like the drawers of a telescope, and often very long; the last ends in a simple more or NATURAL CHARACTER. 55 less sharp point; the first segment is either more conical, or more cylindrical, and then usually thick at its base, or it is quite flat ; in most species it is hairy, in others it is beset with hairs at the tip only; in others again is quite bare; its length varies exceedingly in the various species; the second and the third segments of the borer are always bare. To the length of the borer of the female corresponds that of the thread-like spenis of the male. The hairs of the body are sometimes fine and short, sometimes coarse and long; in the latter case the posterior margin of the abdominal segments is generally beset with bristles, which in the species having fine and short hairs, are either totally wanting or are pre- sent only at the posterior borders of some segments, most frequently on that of the last. The legs are always of moderate length, and of a rather robust structure; they are beset everywhere with short hairs, which be- come longer on the upper side of the posterior tibiz of some species. There are usually some longer bristles on the under side of the anterior femora, and frequently also on their upper side; similar bristles exist on the posterior femora of several species, and some- times even on the middle femora. The tips of the middle tibie are always spurred; otherwise, the tibize have no bristles. It is very characteristic for all the 7rypetide that the erect bristles are totally wanting, which some allied families, for instance the Sapromyzide, possess on the outside of the tibiee, not far from the tip. The first joint of the tarsi is always prolonged. The claws and pulvilly are small, and of equal form in both sexes. The neuration of the wings is that of Acalyptera in its highest perfection, and shows many characters peculiar to this family. The auxiliary vein is separated from the first longitudinal vein, though often approximated to it, especially in some Dacina; it never runs in the usual way, that is, at an acute angle and with equal distinctness as far as its end or even incrassating towards the border of the wing, but turns suddenly towards it, and, at the same time, becomes much more indistinct, the more so as the space between its end and that of the first longitudinal vein is incrassated. At the place where it runs into the border of the wing, the latter bears a small marginal spine, quite indistinct in many species, and which cannot, therefore, be considered as one of the characters of the Zrypetide. Generally the whole length of the first longitudinal vein is beset with bristles; this is also most 56 DIPTERA OF NORTH AMERICA. frequently the case with the base, or a greater part, or even the whole length of the third longitudinal vein; much more seldom there are bristles on the fifth longitudinal vein. The two small basal cells are proportionately large; the posterior of them, @. e., the anal cell in most, but not all species, has its posterior angle drawn out into a point. The thickening of the costal vein always reaches to the fourth longitudinal vein. The surface of the wing has in all species a microscopic pubescence. From the above enumerated structural peculiarities we may de- rive the following characters for the family of Zrypetide:— 1. The borer of the female is corneous, three-jointed, and ends in a simple point; the penis of the male answers the borer in length, and is thread-like and not divided at its end. The front is broad in both sexes, and there are stout bristles on the anterior part of its lateral border, not belonging to the row which descends from the vertex, but forming a separate row which is placed nearer to the lateral border of the front. 3. There are spurs at the end of the middle tibiz, and no bristles whatever on all tibiz, except, in a few species, bristle-like hairs on the upper side of the posterior tibie. 4. The neuration is the completest among the Acalyptera; the auxiliary vein takes a steep turn towards the border of the wing, and becomes indistinct towards its end. bo 4. On the relations of this family. The family most nearly related to the 7rypetide is that of the Ortalide. The two principal characters, by which the former are distinguished from the latter, are the stout bristles existing on the anterior part of the lateral border of the front, and the steep direc- tion in which the tapering end of the auxiliary vein runs to the border of the wing. Both these characters are very constant ; should it happen that one of them is less sharply expressed, the other will be the more striking, and so an absolute certainty is afforded about the limits of these two families, the species of which have hitherto been so much mixed together. The Pallopteride and Loncheide@ are not quite so nearly related to the Trypetide as the Ortalide. They also want the bristles on the anterior part of the lateral border of the front, and the end of the auxiliary vein never shows the peculiarity which cha- ON THE N. A. SPECIES HITHERTO RECORDED. 57 racterizes the Zrypetide. Moreover, their basal cells are smaller, and the first longitudinal vein never has any bristles, but only a short pubescence like that of the remainder of the surface of the wing. The Lauxanide and Sapromyzide have still less relation to the Trypetide, They are readily distinguished from the Zrypetide by their middle and hind tibiz being spurred with bristles before their tip, and the outside of the tibize bearing an erect bristle before the tip; the first longitudinal vein of the wings has no bristles, and the end of the auxiliary vein never has the character peculiar to that of the Zrypetide; the two posterior basal cells are small; the bristles on the anterior part of the lateral border of the front are wanting; in this respect we must not be deceived by the rows of bristles, which run from the two bristles of the vertical border, and which, being more scattered, extend farther anteriorly; there always exists only a single row of bristles, whereas the frontal bris- tles in the 7rypetide always form two rows on each side, one of which may be called the superior and interior, the other the inferior and exterior. With the exception of the families mentioned above there is no other so nearly allied to the Zrypetide, that it would be necessary to point.out its differences. 5. On the N. A. species hitherto recorded. What has been written about the N. A. Zrypetide is very little in amount. No species at all of the section Dacina has been described. I have, however, seen the fragments of a fly captured in Cuba, which belongs either to Dacus or to one of the nearest genera of the Ortalide; but as it is one of those osculating forms between the two allied families, nothing can be said with certainty about its systematic place before having seen a better preserved specimen. The N. A. 7rypete hitherto recorded are as follows :— 1. acidusa Walk., unknown to me, is either a relation of Tryp. suspensa and unicolor, the descriptions of which will be given hereafter, or belongs to those species similar to them which have the fifth longi- tudinal vein also beset with bristles. 2. albiscutellata Harr. must be omitted, since it is undescribed. 3. antillarum Macy. belongs to the Ortalidx, being erroneously placed by Macquart in Urophora, a genus of the T7ypetina. 4. arcuata Walk. differs in nothing from Tryp. fleca Wied. and belongs to the Ortalidz. 58 on ~I oO pe) 10. i1Biee 13. 14, 16. IN 18. Os 20. DIPTERA OF NORTH AMERICA. . armata &. Desv., published by the author as Strauzia armata, is Tryp. longipennis Wied. 4. . asteris Harr.; the description being unfortunately inaccessible to me, I can say nothing about it. The name is preoccupied by Mr. Haliday. . avala Walk., quite unknown to me; Mr. Walker’s statements are not sufficient to decide whether it belongs to the Ortalide or not. . beauvoisii R. Desv.; the description is too bad to allow its true position to be determined ; but it is certainly not among the species known to me. . caliptera Say is Tryp. sparsa Wied.; the older name deserves the preference, the more so as that of Say is not correct. cinctipes Harr. is an undescribed species, and must be therefore omitted. comma Wed. a good species and readily recognizable; not possessing it, I cannot give a more detailed description; but having seen it in some collections, I subjoin a fugitive sketch of the reticulation of the wing (Tab. II, fig. 28), trusting that by this figure and Wiede- mann’s description the species will be recognized. It is not quite certain whether Macquart’s Acinia comma is the same, since he says that the posterior border of the wings has a large clear spot, which was not the case with the individuals of the genuine Zryp. comma Wied. which I have seen. The clear drops near the end of the sixth longitudinal vein being very much crowded, their eventual coalescing into a larger clear spot does not seem impossible. . cornigera Walk. is identical with Tryp. longipennis Wied. cornifera Walk. is a slight variety of Tryp. longipennis Wied., in which the bands of the posterior border of the wings are obsolete, which is not seldom the case. culta Wied. (not cutta, a misprint corrected by Wiedemann himself). It is a relation of the European Tryp. reticulata Schrank, and Wiede- mann’s description is sufficient for recognizing this species. On Tab. I, fig. 29, I subjoin a sketch of the reticulation of the wings, which I made several years ago; though the circumference of the wing may not be quite correct, yet the species will, I hope, be recog- nized from it. - dinia Walk. seems to be a Trypeta related to the European Typ. rotundiventris Fall., tibialis R. Desv., etc. It may stand nearest to Tryp. insecta, the description of which follows hereafter. electa Say will be exactly described in the sequel. fimbriata Macq. is Tryp. culta Wied. flavonotata Macq. is Tryp. electa Say. flexa Wied. is by no means a Trypeta, but an Ortalis not rare in collections. fucata ‘abr. seems to be a true Trypeta, but will be rather hard to recognize, unless an original specimen can be compared. 21. 22. 23 bo i 28. 29. 30. ol. 33. 34. ON THE N. A. SPECIES HITHERTO RECORDED. 59 fulvifrons Jacq. I hardly conceive how Macquart could locate among Urophora a species which is an Ortalis, and nothing else but Ortalis znea Wied. inermis R. Desv., published by the author as Strauzia inermis, is Tryp. longipennis Wied. °. interrupta Macq. seems to be an Ortalis related to Herina rufitarsis Macq., if it is not a mere variety of this species, so variable in the color of its body; moreover, it is so vaguely described that it is not possible to say anything with certainty about it. . latipennis Macgq., described by Macquart under the name of Platy- stoma latipennis; it is, however, certainly a Zrypeta, and I hope not to be mistaken in identifying it with Tryp. sparsa Wied.; the representation of the head is certainly nothing but the invention of the draughtsman, or a foreign head had been glued to the speci- men. - lichtensteinii Wied. I have seen this beautiful species about six- teen years ago, and made a sketch of the picture of the wing, which I give in Tab. II, fig. 25. The bristle of the antenna is thickened at its base in a rather striking manner. . longipennis JVied. will be more accurately described in the sequel. The name of it is ascertained from the inspection of the originals. It is surprising that Wiedemann does not mention the thickening of the frontal bristles of the male, though the males in his collection show it. Perhaps he had specimens enough to satisfy himself that this peculiarity is not constant. . Marginepunctata J/acq. is unknown to me. melliginis Fitch belongs to the Ortalide, and is Herina rufitarsis Macq. mevarna Walk., a Trypeta which has the apex of the wings only reticulated, and is allied probably to the European T7yp. stellata Fiissl. Among the below described species Trypeta solaris may have the greatest resemblance to it. mexicana Wied. seems to be a Trypeta; the original perhaps exists in the Berlin Museum. It is none of the species known to me. narytia Walk. I believe it also to be a Trypeta; it is likewise not among my species. . noveboracensis itch is the same species as Tryp. sparsa Wied. and caliptera Say. nigriventris Macq. probably a Trypeta of the group of Tryp. rotundi- ventris Fall. obliqua Macq., a Trypeta, which seems to be nearly allied to Tryp. suspensa from Cuba and Tryp. unicolor from New Granada, but differs from both by its small transverse vein having an inclined position, and the first hyaline band running uninterruptedly from the border of the wing to the anterior of the two small basal cells, whereas in those species it is interrupted not far from the costal border. 60 35. 36. 37. 38. 39. 40. 41. 43. 44, 45. 46 47. 48 49. 50 DIPTERA OF NORTH AMERICA. obliqua Say seems to be related to the European Tryp. Arctii Deg. and the below described Tryp. palposa from North Wisconsin ; the latter has on its abdomen four rows of black spots, whereas Tryp. obliqua Say has only two. ocresia Walk. apparently related to Teh unicolor from New Granada, but it cannot be identified with this or any other species known to me. The description given by Walker is very vague. picta Fabr. a Camptoneura and consequently an Ortalideous species. quadrifasciata Macq. I believe it to be a Trypeta which I do not possess. quadrifasciata Walk. belongs to the Ortalide and is Herina ru/fitarsis Macq. quadrivittata Wacq. belongs to the Ortalide. scutellaris Wied. I have seen the typical individuals of this beau- tiful species in the Berlin Museum sixteen years ago. If I recollect right, there were bright bands of a more black than brown color on the two last segments only of the abdomen in the male, but on all segments in the female. I was surprised to see in the female the markings of the wings (Tab. II, fig. 27) more extended than in poRe male (Tab. II, fig. 26). - scutellata Wied. a Trypeta quite unknown to me. septenaria Harr. must be omitted as being undescribed. solidaginis Fitch has been amply described in the sequel. sparsa Wied. I give a detailed description of it. tabellaria Fitch, not among the Trypete known to me, nor does it seem to belong to them, but is probably an Ortalida. tribulis Harr. not described and therefore to be omitted. trimaculata Macq. is the same variety of Tryp. longipennis Wied. which Walker has described under the name of Tryp. cornifera. trifasciata Harr. must be omitted as being undescribed. villosa R. Desv. may be a Trypeta, but is so badly described that there is scarcely a possibility to recognize it. The result of the remarks given about the enumerated 50 species will consequently be as follows :— 1. Five species must be omitted, because they have never been described: albiscutellata Harr., cinctipes Harr., septenaria Harr, tribulis Harr., and trifasciata Harr. 2. Fourteen species must be blotted out as identical with species previously described: arcuata Walk., armata R. Desv., caliptera Say, cornigera Walk., cornifera Walk., jimbriata Macq., flavonotata Macq., inermis R. Desv., latipennis Macq., marginepunctata Macq., melliginis Fitch, novebora- censis Fitch, quadrifasciata Walk., and trimaculata Macq. ON THE SYSTEMATIC ARRANGEMENT OF THE SPECIES. 61 3. Of the remaining thirty-one species seven, the five first with all certainty, the two last with great probability, must be placed among the Ortalide. 'These are: antillarum Macq., flera Wied., fulvifrons Macq., picta Fabr., guadrivittata Macq., interrupta Macq., tabellaria Fitch. 4. Consequently twenty-four N. A. 7rypete have been described, namely: actdusa Walk., asteris Harr., avala Walk., beau- voisti R. Desv., comma Wied., culta Wied., dinia Walk., electa Say, fucata Fabr., lichtensteinii Wied., longipennis Wied., mevarna Walk., mexicana Wied., Narytia Walk., nigriventris Macq., obliqua Macq., obliqua Say, ocresia Walk., guadrifasciata Macq., seutellaris Wied., scutellata Wied., solidaginis Fitch, sparsa Wied., and villosa R. Desv. 5. Of these twenty-four species I possess four only [now five.— QO. S.], which I shall fully describe hereafter ; they are: electa Say, longipennis Wied., solidaginis Fitch, sparsa Wied. [and obliqua Say.—O. 8.]. Moreover I have seen in other col- lections four species; they are: comma Wied., culta Wied., lichtensteinit Wied., and scutellaris Wied. As an addition to my paper I subjoin the descriptions which Wiedemann has given of them, and accompany them with drawings of the wings, which, however, on account of their being only fugitive sketches, have not the same claim to correctness as’ the figures of the wings of the other species. 6. On the systematic arrangement of the species to be described. Besides the above mentioned four species I have to describe nineteen new ones, which I leave all united in the genus Zrypeta. Though they differ in their organization, I think my course is both reasonable and proper. It has been already sufficiently shown, how very uncertain the limits of the family Zrypetide are. For the immediate purpose, it will be quite sufficient if insects of other families are no longer mixed with these. The number of accurately known species must increase considerably, before a convenient classification can be thought of. The smaller genera hitherto founded on the various forms of the Trypetina are partly formed on European species, partly estab- lished in a very superficial manner on single species of other parts 62 DIPTERA OF NORTH AMERICA. of the globe. Among the former there are some, which are avail- able or may be rendered available by removing the aberrant species from them; the remaining genera either have no claim to the names of genera, or are understood by different authors in so different a sense as to render their adoption more perplexing than useful. But a few of the available genera are represented in North Ame- rica. The genera created for single species have usually been established on account of a single striking character, no informa- tion being given about the other characters; so it will be next to impossible to place new species in such genera without incurring the risk of gross mistakes. Such being the case, I will be justified, I think, in comprising all species under the head of Zrypeta, in the sense of Meigen and Wiedemann. I should be glad indeed if by the communication of numerous species I was enabled to divide the N. A. Zrypetina into smaller genera. To obtain numerous species is only possible by breeding them, which is a very easy task; for the larve are easily discovered ; they live in stalk-galls, or in berries and berry- like fruits; but most frequently in the flower-heads of Composite, among which they prefer the Cynarocephale to all others. To prevent any misunderstanding I finally have to observe, that in the following descriptions, by the length of the borer I always _ meant the length of its first joint only, which is also comprised in the indication of the length of the females. The length of the whole borer depends so much on the more or less extension of its three segments, that no certain measure of it can be given. Synopsis of the species described in the sequel.* 1 eee pictured (reticulate or banded). 2 Wings not pictured, hyaline. 26 9 { Wings banded. 3 ~ U Wings reticulate. 15 3 { Third longitudinal vein with bristles. 4 Third longitudinal vein without bristles. 10 4 { Abdomen black. 1 discolor, n. sp. Abdomen yellow. $ 5 * If a species is not found among those enumerated in this synopsis, before pronouncing it to be new the Appendices I and II should be con- sulted. This table contains only species described from specimens, and not merely quoted from other works. 0.5. i i SYNOPSIS OF THE SPECIES DESCRIBED IN THE SEQUEL. 63 5 { Face very receding. 2 longipennis Wicd. Face not receding. 6 Back of the thorax not striped. 7 { Back of the thorax striped. 9 ~ f Abdomen with black dots. obliqua Say.* Abdomen without black dots. 8 ( The band rising over the posterior transverse vein is connected with | the preceding on the posterior border. 3 fratria, n. sp. = The band rising over the posterior transverse vein is not connected l with the preceding. 4 suspensa, Nn. sp. (The two middle bands of the wing diverge towards the posterior | border. 5 unicolor, n. sp. a The two middle bands of the wing are converging towards the poste- rior border. 6 electa Say. { Thorax and abdomen differing in color. 7 insecta, n. sp. Thorax and abdomen of the same color. 11 Color of the body yellow. 12 { Color of the body black. 14 12 { Abdomen with black dots. 8 palposa, n. sp. Abdomen without black dots. 13 Basal third of the wing hyaline. vernonie, n. sp.t ha third of the wing pictured. 9 suavis, n. sp. Scutellum yellow. 10 cingulata, n. Sp. ae black. 11 polita, n. sp. 15 ‘ Wings much widened. 16 Wings not widened. ey Tip of the wings with an uninterrupted white seam. 12 sparsa Wied. 16 Tip of the wings with an interrupted white seam. 13 rotundipennis, n. sp. i7 J Proboscis geniculated. 18 Proboscis not geniculated. 19 18 ( Stigma with a limpid drop. 14 clathrata, n. sp. Stigma without limpid drop. ; 15 humilis, n. sp. { Reticulation of the wing not radiating at its tip. 20 Reticulation of the wing radiating at its tip. , 21 | Front exceedingly broad. 16 solidaginis Fitch. Front of moderate breadth. 17 seriata, n. sp. 21 { Wings reticulate only on the apical half. 18 solaris, n. sp. Wings reticulate on their whole surface. 22 { The whole reticulation equally broken. 19 zqualis, n. sp. The reticulation broken much less in the middle. 23 23 { Abdomen yellow. 24 Abdomen black. 25 * See Appendix III. + Ibid. 64 DIPTERA OF NORTH AMERICA. { Reticulation paler in the middle. 20 festiva, n. sp. Reticulation everywhere of the same color. 21 bella, n. sp. ( The curvature inside of the first posterior cell considerable. Be 22 latifrons, n. sp. The curvature inside of the first posterior cell very small. L 23 melanogastra, nN. sp. 6 § Stigma fuscous. albidipennis, n. sp.* l Stigma pale. alba, n. sp.t 1. Description of the species. i. ©. discolor Lorw. %. (Tab. II, fig. 1.)—Lutea, abdomine nigro, alarum fasciis quatuor obliquis fuscanis, prima et secunda antice, tertia et quartaé postice connexis, vend longitudinali tertiaé setosd, venulis transversis valde approximatis. Luteous yellow with the abdomen black; wings with four very oblique brownish bands, the two first being anteriorly, two last posteriorly connected; third longitudinal vein with bristles and the two transverse veins approximate. Long. corp. 0.13. Long. al. 0,15. Yellow with a rather glossy black abdomen, which color becomes more blackish-brown near the base. Front proportionately rather narrow; three bristles at each side are of a browner color and directed anteriorly. Antenne yellowish, not reaching as far as the border of the mouth; bristle of the antenne thin, apparently naked. Face descending rather straight downwards, but little excavated. Opening of the mouth proportionately large. Pro- boscis short, palpi somewhat prominent. Upper side of the tho- rax with short yellow hairs and yellowish-brown bristles; it has no pale stripes, but there is an obsolete, paler, longitudinal stripe between it and the pleure. Pleure of the color of the upper side of the thorax, with yellowish bristles; the neighborhood of the cox is blackish. Scutellum with four bristles. Abdomen with short black hairs: Legs yellow, anterior femora with ochra- . eeous bristles on the under side. Wings glassy with four very oblique brown bands, which are partly tinged with brownish- yellow on the inside. The first band begins at the base of the wing, where it is connected with the second, runs over the anal cell as far as the base of the third posterior cell, and, including the fourth longitudinal vein, projects a little, whereupon leaving the latter, it bends towards the posterior border of the wing, which it * See Appendix III. } Ibid. \ TRYPETIDAE. 65 reaches in the middle between the tips of the fourth and fifth lon- gitudinal veins; its color is yellowish-brown near the base of the wings and dark brown beyond the basal cell. The second band runs first from the base of the wing to near the tip of the first longitudinal vein, then crosses the wing obliquely, on the border of which it includes the tip of the fifth longitudinal vein; the two transverse veins are included by it in such a way that their anterior ends are placed exactly on the outside border of the band; the color of this band is brownish-yellow with darker brown edges which gradually overcome the lighter color at the posterior end; also that portion of it which covers the stigma and the space imme- diately beneath it, is dark brown. The third band begins on the costal border immediately behind the stigma and reaches the pos- terior border immediately behind the tip of the fourth longitudinal vein; it is brownish-yellow, edged with dark brown, the posterior end being likewise dark brown. The fourth band begins a little before the tip of the second longitudinal vein and runs on the bor- der of the wing as far as the, fourth longitudinal vein, where it is connected with the third band; its color is dark brown, being brownish-yellow only at its anterior end. The two transverse veins are very near each other and very steep; none of the longitudinal veins is extraordinarily arcuated; the second, third, and fourth longitudinal veins diverge a little at their tips; the bristles of the third longitudinal vein are very distinct and reach as far as its tip. Hab. Cuba. (Riehl.) 2. T. longipennis Wiep. % & 9. (Tab. II, fig. 2 4,3 9.)—Flava, angusta, rivulis fasciisque alarum angustarum flavo-fuscanis, facie valde recedente. Yellow, slender; the narrow wings with brownish-yellow rivulets and bands; the face much receding. Long. corp. 0.17—0.26. Long. al. 0.22—0.30. Syn. Zrypeta longipennis WirpEMANN, Auss. Zweifl. II, 483, 12. Strauzia armata R. Desvorpy, Myod. 719, 2. (%.) Strauzia inermis R. Desvorwy, Myod. 718, 1. ( 9.) Tephritis trimaculata Macquanrt, Dipt. exot. II, 226, 8. Tab. XXXI, fig. 3. Trypeta cornigera WALKER, List. Brit. Mus. IV, 1010. Trypeta cornifera WALKER, List. Brit. Mus. IV, 1011. Very variable both in size and in the color of its body and wings, yet readily recognizable. In the palest individuals the whole body is yellow, only a very small dot immediately above the base of the 5 66 DIPTERA OF NORTH AMERICA. wings and the tip of the borer being black. In darker individuals, the following markings appear successively: 1. A black double spot in the middle of the anterior border of the thorax; 2. A black spot on each side of the scutellum ; 3. A broad black stripe on each side of the metanotum; 4. The black posterior portion of the lateral stripes; 5. The black anterior portion of the lateral stripes; 6. The double stripe in the middle of the thorax, abruptly ending inits centre. The head is rather bright yellow; front very prominent, face much receding; opening of the mouth not widen- ed; palpi and proboscis short, yellow, the bristle with a very short pubescence. Frontal bristles black, the superior ones considerably stout, two of them on each side in the male assume the shape of straight spines, a little incrassated at their tips; in smaller males, however, these spines are not seldom only little stouter than in the females, and of the ordinary form. The lateral border of the thorax and the superior border of the pleuree may have a pale yellow color in life; in dry specimens they are very whitish. From the pale yellow scutellum a broad pale yellow stripe extends to about the middle of the thorax. Hairs and bristles of the thorax black. Scutellum with four black bristles. Abdomen proportionately very narrow, with rather long black hairs. Borer about half as long as the abdomen, with the tip only blackened. Legs yellow, anterior femora with black bristles on the under side. Wings narrow and very long, more elongated and pointed in the males than in the females, but not always in the same degree ; the brown- ish-yellow stripes and bands leave the following clear spots: 1. A space near the costal border between the transverse humeral vein and the tip of the auxiliary vein, and having usually a brownish spot in its middle; 2. An oval space immediately below the stigma between the third and fourth longitudinal veins; 3. A tri- angular space immediately beyond the tip of the first longitudinal vein, and reaching from the costal border as far as the third longi- tudinal vein; 4. An arcuated band running obliquely from the costal border between the two transverse veins as far as the fifth longitudinal vein; 5. A triangular space on the posterior border filling up the second posterior cell, with the exception of an edge along the veins; 6. An arcuate oblique semifascia beginning on the posterior border before the tip of. the fourth longitudinal vein, and running as far as the third longitudinal vein; 7. The alary appendage, the posterior angle of the wing, and a large space . TRYPETIDAE. 67 adjoining it, and lying before the last longitudinal vein. The transverse humeral vein, and the space of the costa near it, are usually black as well as the space of the latter, where the costal spine is inserted. The brownish-yellow bands of the wings have narrow brown edges, and are in a greater or less extent brown near the tip and the posterior border of the wings. ‘There are specimens in which the bands are much more extended, but those having a part of them obsolete are more common; this fading of the picture of the wings is most frequent in the neighborhood of the posterior border. The posterior transverse vein is a little oblique; the tips of the third and fourth longitudinal veins are curved. The circumference of the wings is not always the same in the males; those the frontal bristles of which are most thickened appear to have the most prolonged and pointed wings. Hab. Middle States. (Osten-Sacken.) Observation.—I have had an opportunity of examining the typical individuals of Zryp. longipennis Wied. 3. T. fratria Lorw. 9. (Tab. Il, fig. 4.)—Tota lutea, thorace non vittato, alarum rivulis fasciisque luteo-fuscanis, maculam ovatam pellu- cidam in posteriore cellule discoidalis parte includentibus, vena longi- tudinali tertiad setosa. Totally luteous yellow; the thorax without stripes; the wings with brown- ish-yellow rivulets and bands, including an ovate pellucid spot in the posterior part of the discal cell; the third longitudinal vein with bris- tles. Long. corp. 0.22. Long. al. 0.22. Rather dark yellow with the scutellum paler and an aimost whitish-yellow, not sharply limited stripe, running from the shoulder to the base of the wing; the metanotum at each side with a dot- like black spot. Front of moderate breadth. Antenne yellow, little longer than half the face, with the bristle apparently bare. Face receding only a little, and slightly excavated below the an- tenn. Proboscis short; palpi slightly projecting. Bristles of the thorax black. Hairs of the abdomen short and black. Borer very short, not flattened, concolorous with the abdomen. Legs yellow, tibize and tarsi paler than the femora; anterior femora with some black bristles on the underside. The picture of the wings is yellowish-brown, and of the same form as that of the European Tryp. Heraclei Linn. The part of it adjacent to the base of the wings reaches from the costal border as far as the dark brownish 68 DIPTERA OF NORTH AMERICA. stigma, having, however, between the transverse humeral vein and the tip of the auxiliary vein a rather large and almost hyaline space ; it includes between the third and fourth longitudinal veins an oval transparent spot near the base of the discal cell; it covers the whole of the two posterior basal cells and fills up the two first thirds of the discal cell, ranning then in a darker color behind the fifth longitudinal vein as far as the tip of this vein, from whence forming a band, it rises above the posterior transverse vein and is connected with the remaining picture in the neighborhood of the small transverse vein. From the latter place a band runs obliquely to the costal border, where it seams the tip of the wing and pro- ceeds as far as the tip of the fourth longitudinal vein; on the third longitudinal vein it emits a parallel branch running to the posterior border. ‘The last portion of the third longitudinal vein is only slightly curved; the posterior transverse vein is slightly oblique; the small transverse vein is perpendicular and more than one and a half of its length from the posterior transverse vein. Hab. United States. (Osten-Sacken.) Observation 1.—Tryp. fratria resembles exceedingly the yellow variety of Zryp. Heraclet Linn., and agrees with it especially in the picture of the wings; but it differs from it by its shorter and pro- portionately broader wings, by the greater distance between the two transverse veins, and the curve of the last portion of the third longitudinal vein, which is less considerable. I found also the borer of the palest females of Zryp. Heraclet always black, whereas its color in Zryp. fratria agrees with that of the abdomen. Observation 2.—I have been of the opinion for some time that this species might be Zryp. vartpennis Macq., but after a closer examination I find this not admissible, since in Macquart’s figure (Dipt. exot. II, 3, Fab. XX XI, f. 1) the band rising from the posterior border and seaming the posterior transverse vein includes a large clear space behind the fifth longitudinal vein, which does not exist in Zryp. fratria, and the penultimate band is united with the first near the second longitudinal vein, whereas in Zryp. fratria this union takes place at the third longitudinal vein. The state- ment of the metanotum of Zryp. vartipennis being black, whereas in my specimen of Zryp. fratria it is marked with a black dot on each side only, could not be considered as decisive for separating the two species, since the species of this group are very variable in their colors. TRYPETIDAE. 69 4. T. suspemsa Lorw. %. (Tab. II, fig. 5.)—Tota lutea, thorace non vittato, alarum fasciis fuscanis obliquis, postice divergentibus, vend _longitudinali tertia setosa. Totally luteous yellow; the thorax not striped; the wings with oblique brownish bands diverging posteriorly; the third longitudinal vein with bristles. Long. corp. 0.21. Long. al. 0.22—0.23. Dark yellow. Front purer and paler yellow; frontal bristles black, rather short, and not very stout. Antenne yellowish, almost as long as the face, with the bristle very thin, and having a very delicate and short pubescence. Face a little receding, with pro- portionately rather deep furrows for the reception of the antenne. Opening of the mouth rather widened ; border of the mouth sharp. Proboscis rather thick, with the suctorial flaps a little prolonged. Palpi broad. Upper side of the thorax without stripes; its pube- scence yellow and exceedingly short, bristles black. Scutellum with four black bristles. Metanotum colored alike with the rest of the body. Hairs of the abdomen short and pale, but the bris- tles at its end black. Legs yellow; anterior femora not very stout, with some black bristles on the under side. Wings not very long; their markings are mostly yellowish-brown, and leave the following hyaline spots: 1. A small triangular one on the costal border immediately behind the tip of the first longitudinal vein, reaching as far as the third longitudinal vein, and joining there a hyaline spot which lies below the stigma between the third and fourth longitudinal veins; 2. An oblique band slightly curved, which rises on the posterior border, near the tip of the last longitudinal vein, and ascends between the transverse veins as high as the third longitudinal vein; 3. A triangular spot of the posterior border, occupying the greater part of the second posterior cell, and reach- ing with its apex to a little beyond the fourth longitudinal vein ; 4, An oblique band which begins at the posterior border, imme- diately beyond the tip of the fourth longitudinal vein, and ascends as high as the second longitudinal vein, so that the two oblique clear bands almost meet with their anterior ends. The small transverse vein is at the end of the second third of the discal cell, and, like the posterior transverse vein, has a slightly oblique posi- tion; the end of the fourth longitudinal vein is distinctly curved forwards; the posterior angle of the anal cell is drawn ont into a long point. Hab, Cuba. (Poey.) 70 DIPTERA OF NORTH AMERICA. 5. T.umicolor Lorw. %. (Tab. I, fig. 6.)—Flava, thoracis vittis scutelloque multo pallidioribus, fasciis alarum fusco-flavescentibus, pos- tice divergentibus, vena longitudinali tertia setos. Yellow, the stripes of the thorax as well as the scutellum much paler; the brownish-yellow bands of the wings diverging posteriorly ; the third longitudinal vein with bristles. Long. corp. 0.26. Long. al. 0.27. Rather pale yellow. Fronta little brighter, of moderate breadth ; frontal bristles black, the superior ones rather stout. The yel- lowish antenne are nearly as long as the face, bristle very short, beset with a very short and delicate pubescence. Face a little re- ceding, the furrows for the reception of the antenne proportion- ately rather deep. Opening of the mouth rather widened, border of the mouth sharp. Proboscis rather thick, with the suctorial flaps slightly prolonged; palpi broad. The upper side of the thorax, above the base of the wings, shows a stripe running from the suture to the posterior border of the thorax, and has in the described specimen rather a whitish color, which seems to have been pale yellow in the living insect; of the same color are the shoulder and the space behind it, the scutellum and a large spot above the poisers; a broad stripe of the same color seems to run from the middle of the posterior, border of the thorax to nearly its middle. The dark stripes usual in other species are indicated by rows of blackish spots; they may, however, have become visible only after the drying up of the insect. The short hairs of the thorax are pale yellowish, the bristles black. Scutellum with four black bristles. Metanotum with a black stripe on each side. Abdomen with pale, very short hairs and brownish-black bristles at its end ; last segment a little prolonged, with an indistinct brown longitu- dinal line on each side. Legs yellow; anterior femora with some brown bristles on their under side. Wings rather large; the bands are brownish-yellow with brown edges, entirely brown near the posterior border and the tip of the wing; the clear spaces which they leave are as follows: 1. A very oblique one, interrupted on the third longitudinal vein, with its anterior end forming a trian- gular spot, placed beyond the tip of the first longitudinal vein, and running through the base of the discal cell as far as the base of the posterior basal cell; 2. A band, having the form of an 8, rising on the posterior border, near the tip of the last longitudinal vein, and, after running between the transverse veins, ascending as | high as the second longitudinal vein, from whence it turns again TRYPETIDAE. Gs to the posterior border, which it joins in the neighborhood of the tip of the fourth longitudinal vein; 3. A large triangular spot of the posterior border, which occupies a great portion of the second posterior cell, and with its tip reaches beyond the fourth longi- tudinal vein. The stigma is long and rather dark brownish. Transverse veins straight and steep; the fourth longitudinal vein is distinctly curved forwards at its end, asin 7ryp. parallela Wied.; the posterior angle of the anal cell is drawn out into a large point. Hab. New Granada. (Schott.) G6. T. electa Say. 9. .(Tab. II, fig. 7.)—Flava, thoracis vittis scutel- loque multo pallidioribus, alis fuscano-fasciatis, vena longitudinali tertia setosa, tibiis posticis nigro-ciliatis. Yellow, the stripes of the thorax as well as the scutellum much paler; the wings with straight brownish bands; the third longitudinal vein with bristles and the upper side of the posterior tibie ciliated with black bristles. Long. corp. 0.29. Long. al. 0.29. Syn. Zrypeta electa Say, Journ. Acad. Philad. VI, 185, 1. Tephritis flavonotata Macquart, Dipt. exot. Suppl. V,125. Tab. VII, fig. 9. This very distinct species has in the picture of the wings a great resemblance with the European 7’ryp. alternata Fall. Yel- low. Front of middling breadth; frontal bristles black, rather stout. Face slightly receding, with rather deep furrows for the reception of the antenne. Antenne yellow, reaching only a little beyond the middle of the face; the bristle bare and very thin. Opening of the mouth large, but not widened; border of the mouth rather sharp, but not projecting. Proboscis small; palpi rather broad. On the upper side of the thorax there is a pale yellow (almost ivory color in the dry specimen) stripe running from the shoulder to the base of the wing, and a second above the base of the wing running from the suture as far as the posterior border of the thorax. Another stripe of the same color runs from the middle of the posterior border to beyond the middle of the thorax, where it is gradually pointed and obliterated; the stripe lying above the base of the wing is interiorly edged with black in the described specimen. Hairs of the thorax short, pale yellowish ; bristles black. Scutellum of the color of the pale stripes of the thorax and a black spot on each side of the base of the lateral border ; it has four bristles. Pleurs with a pale yellow longitudinal stripe in its middle and two black little spots above it. Abdomen yellow, 72 DIPTERA OF NORTH AMERICA. with short black hairs and black bristles on the posterior borders of the two last segments; the last segment has a dot-like black spot on each side near the base. Borer short, thick, not flattened at all, a little rounded at its end, of the color of the abdomen, and covered with black hairs. Legs yellowish; anterior femora with black bristles on their under side; the under side of the middle and posterior femora with some black bristles only near the tip, the bristles being shorter on the middle femora; the pos- terior tibizes on their whole upper side are densely fringed with rather long black bristles, which afford a very characteristic mark of this species. Wings hyaline, with brown bands. ‘The first of these bands is the least regular, and runs from the transverse humeral vein as far as the end.of the anal cell, the posterior angle of which is drawn out into a long point; this anal cell, as well as the basal cell lying before it, is brownish-yellow. The second band, beginning with the short stigma, runs over the small trans- verse vein, and, after crossing the discal cell, reaches the posterior border, on which it is connected more or less distinctly with the posterior end of the following band. The latter begins on the costal border before the tip of the second longitudinal vein, and after running over the posterior transverse vein in a straight direc- tion, reaches the posterior border of the wing. Its anterior end is perfectly connected with the last band, which seams the wing as far as a little beyond the tip of the fourth longitudinal vein. Be- wween the second and third bands there is still a yellowish-brown line drawn perpendicularly from the costal border to the third longitudinal vein. Transverse veins straight; the small transverse vein is a little beyond the middle of the discal cell. Hab. Florida, (Osten-Sacken.) %. T. imsecta Lorw. 9. (Tab. II, fig. 8.)—Thorace nigro, capite, abdomine pedibusque luteis, alarum nigrarum incisuris marginalibus guttulisque inter venarum longitudinalium tertiam et quartam tribus vel quatuor pellucidis, vena longitudinali tertia nuda, setis scutelli duabus. Thorax black; head, abdomen, and legs luteous; wings black, with limpid incisions on the borders, and three or four limpid drops between the third and fourth longitudinal veins; third longitudinal vein bare; scutellum with two bristles. Long. corp. 0.14. Long. al. 0.14. Of the group of the European 7ryp. rotundiventris Fall. Head dirty yellow. Front rather narrow, more so towards its anterior Eee . TRYPETIDAE. fe end; frontal bristles brown; the row of rather long bristles at the posterior orbit whitish. Antenne yellowish, nearly as long as the face. Cheeks descending only a little below the eyes. Thorax and scutellum black, the neighborhood of the coxe brown. Hairs of the thorax short, pale yellowish, bristles brown. Scutel- Jum with two long brown bristles. Abdomen brownish-yellow ; borer not quite so long as the two last segments united, much broader at the base, broad and abrupt at the end, flattened, con- colorous with the abdomen. Legs yellow. Wings black, with pellucid spots. On the costal border there is a small spot before the transverse humeral vein; a similar spot projecting a little from the first longitudinal vein lies beyond the transverse humeral vein, and a smaller one between it and the tip of the auxiliary vein ; it is followed by two triangular spots of equal size, the first of which is immediately beyond the tip of the first longitudinal vein, and touches the third longitudinal vein at its junction with the small transverse vein. On the posterior border of the wing there are six clear excisions, the two first of which coalesce with the grayish hyaline axillary angle of the wing; the third reaches the fifth longitudinal vein; the fourth lying behind the tip of the fifth longitudinal vein is more cloudy than the others, and goes a little beyond the fifth longitudinal vein; the fifth accompanies the steep posterior transverse vein at its hind side, and reaches as far as the fourth longitudinal vein; the sixth has a more inclined position and a sharper tip, with which it reaches the fifth longi- tudinal vein. In the middle of the broad first posterior cell there is a considerable hyaline drop; a much smaller drop is seen at the anterior side of the fourth longitudinal vein, in the middle of its penultimate portion, and one or two hardly visible drops at the antepenultimate portion of this vein. The second longitudinal vein is slightly undulating, and diverges more than usually towards the end from the third longitudinal vein; the posterior angle of the anal cell is drawn out into a prolonged point. Hab. Cuba. (Poey.) 74 DIPTERA OF NORTH AMERICA. 8. T. palposa Lorw. %. (Tab. II, fig. 9.)—Flava, abdomine punc- torum nigrorum seriebus quatuor picto, alis hyalinis luteo-fasciatis, vend longitudinali tertia nuda. Yellow, abdomen with four rows of black dots, wings hyaline with luteous bands and the third longitudinal vein bare. Long. corp. 0.26—0.27. Long. al. 0.26. It is nearly allied to Zryp. arctit Deg., lappe Cederli, ete. Yellow; front brighter yellow, rather broad; frontal bristles black- ish, the small bristles of the posterior orbit whitish. Antenne yellow, descending a little beyond the middle of the face, their third joint rather broad; the bristle of the antenne apparently bare, with the base slightly incrassated. Face a little receding, excavated in the middle, so that the border of the mouth is pro- jecting ; the furrows for the reception of the antenne rather flat. Opening of the mouth very wide; proboscis thick and short; palpi broad, rather large, with some small black bristles. Thorax with a large glossy black spot in the middle of its anterior side; its upper side blackish, with the exception of the lateral and posterior borders, and of a large triangular spot which rises from the poste- rior border; hairs whitish-yellow; bristles blackish; two of the latter, inserted before the scutellum, are placed on larger black dots, and two before them on smaller dots.- Scutellum with four bristles, yellow, only a little blackened at the base of the lateral border. Metanotum black. Pleurz with some brown spots, and above the posterior coxve with a small black spot. The third, fourth, and fifth segments of the abdomen have each at its anterior border four small black spots, the intermediate ones being more approximated; the fifth segment is much prolonged, and has, moreover, a black spot in each posterior corner. The rather coarse hairs of the abdomen are yellowish on the first segments and the anterior part of the middle ones, the remaining ones are black. Legs yellow; anterior femora with black bristles on the under side. The color of the picture of the wings is brownish-yellow in my specimen, which is apparently a little faded ; it extends on the costal border from the base to the tip of the first longitudinal vein, and, on the first portion of this extent, reaches as far as the fourth longitudinal vein, and on the second half as far as the third only. From the tip of the first longitudinal vein a band runs over the small transverse vein; a second band runs from the costal border over the posterior transverse vein; these two bands become more TRYPETIDAE. 75 obsolete towards the posterior border, and almost coalesce in its neighborhood. The first of them is also connected with a stripe which edges the fifth longitudinal vein. The edge of the tip of the wing is perfectly connected with the second band, and reaches a little beyond the tip of the fourth longitudinal vein. The anal cell is brownish-yellow. Transverse veins steep; the small trans- verse vein a little before the last third of the discal cell. Hab. Northern Wisconsin. (Kennicott.) 9. T. suavis Lorw. %. (Tab. Il, fig. 10.)—Pallide flava, unicolor, alarum hyalinarum litura basali fasciisque tribus nigricantibus in formam litere S confluentibus, vena longitudinali tertia nuda. Pale yellow, unicolorous ; wings hyaline, with a blackish basal stripe and three blackish bands confluent in an §-shaped mark; third longitudinal vein naked. Long. corp. 0.20. Long. al. 0.21. Of this species, very conspicuous by the peculiar picture of its wings, I unfortunately possess only one individual, much injured in carrying. It is everywhere pale yellow, and its thorax and scutellum have no trace of a paler picture. Hairs very short, whitish-yellow on the upper side of the thorax, rather blackish on the pleure; bristles all black. Scutellum with four bristles. Wings hyaline; the veins at the base of the wing yellowish; a blackish not very striking stripe runs from the tip of the basal humeral vein to the posterior angle of the anal cell, which is drawn out into a point. The remainder of the picture of the wings con- sists of three very broad, rather blackish bands; the first runs from the black stigma, widening gradually perpendicularly to near the posterior border, where it is connected wita the second, which rises over the posterior transverse vein as far as the costal border, and connects there completely with the third band which seams the tip of the wing. The connection of the first and second bands is somewhat interrupted by a clear incision reaching from the poste- rior border a little into the discal cell. Above the end of this incision there is another clear spot. Stigma small; none of the longitudinal veins unusually curved; the small transverse vein is somewhat before the middle of the discal cell and below the very tip of the first longitudinal vein; the posterior transverse vein is only a little arcuated ; the two transverse veins are steep, not perfectly perpendicular. Hab, Middle States. (Osten-Sacken.) 76 DIPTERA OF NORTH AMERICA. 10. T. cimgulata Lorw. ¢. (Tab. II, fig. 11.)—Nigra, capite pedibusque luteis, thoracis margine laterali scutelloque flavis, margine segmentorum abdominalium singulorum postico albido, alarum hyali- narum fasciis quatuor punctoque apicali nigris. Black with the head and legs luteous, the lateral borders of the thorax and the scutellum yellow, the posterior borders of the abdominal seg- ments whitish ; wings hyaline with four bands and an apical dot black. Long. corp. 0.22. Long. al. 0.20. It belongs to the relationship of the European Zryp. cerast Linn. (= signata Meig.), a group which must not be confounded with that of Zryp. solstitialis Linn., closely alike in its coloring. Black. Head rather dark yellow, front brighter yellow, of middle breadth, with rather long black bristles. Antenne reaching to a little beyond the middle of the face, last joint rather narrow, and with the anterior corner rather sharp. Face straight, descending, with moderately deep furrows for the reception of the antenne ; border of the mouth by no means prominent. Proboscis and palpi short. Thorax black; the humeral callosity and a longitudinal stripe running from the latter to the base of the wing are bright yellow. The bristles of the thorax and the four bristles of the yellow scutellum black; the base and greatest part of the lateral border of the latter black. Metanotum and abdomen glossy black, the latter with broad whitish (perhaps more yellow in life) edges of the posterior borders and black hairs. Borer exceedingly short. Legs dark yellow; femora a little brownish at the base ; the anterior femora with small brown bristles on the under side; the two posterior tibise with short black bristles on the upper side. Wings somewhat broad, especially in the neighborhood of the base, with four black bands and a little black spot at the tip. The first band runs from the basal humeral vein to the posterior angle of the anal cell, which is drawn out into a point. The second is broadest, running from the black stigma beyond the fifth longi- tudinal vein, and ending abruptly in the middle between this vein and the border of the wing. The third, which runs over the pos- terior transverse vein, is also rather perpendicular, and completely. reaches the posterior border of the wing. The fourth band is perfectly united with the third on the costal border, and reaches the posterior border behind the tip of the fourth longitudinal vein, so that it has a rather oblique position. The small apical spot TRYPETIDAE. 7 includes the tip of the third longitudinal vein. Both transverse veins are straight and perpendicular. Hab, Middle States. (Osten-Sacken. ) 11. T. polita Lozrw. 9. (Tab. II, fig. 12.)—Atra, nitida, capite pedibusque flavis, scutello tumido, alarum albido-hyalinarum macula basali atra fasciisque tribus latissimis fusco-nigris. Deep black, shining; head and legs yellow, scutellum inflated; wings whitish-hyaline with a basal black spot and three very broad brownish- black bands. Long. corp. 0.25. Long. al. 0.17—0.18. Belongs to the relationship of the European Zryp. Wiedemanni Meig., the species of which chiefly agree in their inflated scutellum and short wings, while they differ among each other much in the structure of their face. Front bright yellow, beautifully yellowish- brown above, considerably broad; frontal bristles black. Antennze yellowish, descending to the middle of the face, and having a black bristle, the pubescence of which is exceedingly short and hardly visible. Face whitish-yellow, a little receding, its middle rather flat; border of the mouth not prominent at all; opening of the mouth rather small; proboscis and palpi short. The inferior part of the occiput is whitish-yellow, the superior blackish. Thorax rather convex, altogether glossy black, bare, but the broad lateral stripes are bordered everywhere with a row of yellowish short hairs, and the broad middle stripe is divided by a longitudinal row of such hairs. Bristles black. Scutellum shining black, very con- vex, as if inflated. Metanotum black, with an indistinct whitish reflection. Pleure shining black, with a few stiff yellowish hairs and some black bristles. Abdomen black; the hairs rather stiff, whitish on the posterior part of the first segment; on the second and third segments they are black, except the hindmost ones of the posterior border, which are whitish; on the two last segments they all are whitish. Borer shining black, flattened, pointed, abundantly as long as the abdomen, with very short black hairs. Legs dirty fuscous-yellow; femora not much incrassated, the anterior ones with a few black hairs on the under side. Wings short and rather broad, having the transverse veins very approximated and perfectly perpendicular; they are rather whitish, with very broad brownish- black bands. Their innermost base is yellowish, then follows a large triangular rather deep black spot, which reaches from the costal border as far as the axillary incision of the wing, and only 78 DIPTERA OF NORTH AMERICA. little exceeds the basal cells. The two first black or brownish- black bands are united on the costal border, so as to form an inverted V; the second of them runs from the stigma over the transverse veins, and has a more inclined position than the first; the isolated third band has a position similar to that of the second, and seams the tip of the wing some distance beyond the tip of the fourth longitudinal vein, without coalescing anywhere completely with the border of the wing. Hab. Mississippi. (Schaum.) Washington. (Osten-Sacken.) Observation.—The Brazilian Urophora connexa Macq. (Dipt. exot. Suppl. IIT, 64, Tab. VII, fig. 10) has the picture of the wings rather similar to those of Zryp. polita. But being greenish- black, and having the last band of the wings completely connected with the preceding, and running straight on with the costal border, but not reaching the tip of the third longitudinal vein, it is evi- dently different from Zryp. polita. 12. T. sparsa Wiep. % and 9. (Tab. II, fig. 13.)—Fusca, alis latis- simis, rotundatis, nigris, albido-guttulatis et margine apicali albo ornatis. Brown; wings very broad and rounded, black with small drops, and the apical border whitish. Long. corp. 0.27—0.30. Long. al. 0.26. Syn. Tryneta sparsa WIEDEMANN, Auss. Zweifl. IT, 492. Trypeta caliptera Say, Journ. Acad. Phil. VI, 187, 3. Platystoma latipennis MAcquart, Dipt. exot. II, 3,200. Tab. XXVI, fig. 8. Acinia noveboracensis Fircu, First Rep. etc. 67. Of a brownish-red, sometimes more brown color. Front broad, brownish-yellow, frontal bristles black; the bristles of the poste- rior orbit whitish-yellow. Antennze descending below the middle of the face, their bristles with a short, but distinct pubescence. Face excavated in the middle, and marked with two large deep black dots; another small deep black spot is between the antenna and the anterior angle of the eye. Eyes with three very distinct transverse bands. Palpi dark brown, usually blackish at the tip; suctorial flaps a little prolonged. On the upper side of the thorax there are usually two or three darker longitudinal lines, and a broad dark-brown edge of the lateral border. The short hairs of the thorax and scutellum are whitish-yellow, the bristles of both black. Of the four bristles placed in the middle of the thorax, the two first are near the transverse suture. Pleurze above with whit- TRYPETIDAE. 19 ish-yellow, below with black hairs, the bristles mixed among them black. The abdomen usually bears two rows of large blackish spots, of a rather quadrangular form, leaving between them a brown middle streak, and not completely reaching the posterior borders of the single segments; sometimes they extend so much, that only the posterior borders of the segments retain a paler color, whereas the whole surface is blackish. Borer blackish-brown, sometimes with a red spot on each side, a little pointed, rather flat; its first segment is a little longer than the two last segments of the abdomen taken together. The hairs of the abdomen are mostly black, a few light ones being among them. Legs paler reddish- brown, the anterior femora often partly blackened, with some black bristles on the upper and under sides. Wings exceedingly broad, with the uninterrupted whitish seam of the tip forming a narrow crescent ; on their surface there are numerous clear drops rather equally scattered, but totally wanting in that part of the black color which adjoins the white crescent, as well as before the first longitudinal vein. At the tip of the first longitudinal vein, a small, clear, but little distinct stripe is seen. The small transverse vein straight and perpendicular, the posterior one a little curved and steep. Hab. Northern Wisconsin. (Kennicott.) Observation.—I possess a specimen, which is distinguished by its much paler, almost dull testaceous color, its less enlarged wings and the somewhat larger size of the clear drops, but as to the other characters agrees so perfectly with the ordinary specimens of Zryp. sparsa Wied. that I do not venture to declare it a different species. 13. T. rotundipennis Lorw. %. (Tab. II, fig. 14.)—Fusca, alis latissimis, rotundatis, nigris, albido-guttulatis et in marginibus ante- riore et apicali maculas minutas albidas gerentibus. Brown; wings broad and rounded, black, with very small whitish drops in the middle, and small whitish spots on the costal and apical borders. Long. corp. 0.28. Long. al. 0.26. Of this species I have only one specimen, which is unfortunately so much injured in the journey as to preyent me from giving a full description. However, as it is very nearly related to Zryp. sparsa Wied., it will be recognized even from my incomplete de- scription. The color is the same; the wings are still shorter and broader, especially the cell which lies before the first longitudinal 80 DIPTERA OF NORTH AMERICA. vein is much: broader; the third longitudinal vein is much more undulated, and the last portion of the fourth longitudinal vein is shorter than the posterior transverse vein, whereas it is a little longer in Zryp. sparsa. None of the drops on the wings of Zryp. sparsa is of a more considerable size than the others, whereas Tryp. rotundipennis has such a drop between the third and fourth longitudinal veins, opposite to the base of the discal cell; the drops are in general equally distributed in Zryp. sparsa, they are much more irregularly grouped in Zryp. rotundipennis ; the size and number of the drops diminishes a little from the base towards the apex in Zryp. sparsa; their number only, not their size diminishes in Zryp. rotundipennis ; their size increasing towards the posterior border in 7ryp. sparsa, this is not the case in Tryp. rotundipennis. In Tryp. sparsa the white crescent seaming the apex of the wing is entire, in Zryp. rotundipennis it is dissolved into several spots. Finally, the anterior border of the wings of Tryp. rotundipennis bears a row of small clear spots, whereas Tryp. sparsa has no trace of them. flab. Middle States. (Osten-Sacken.) 14. VT. clathrata Lorw. 9. (Tab. Il, fig. 15.)—Cana, capite pedi- busque flavis, femoribus lituraé nigra signatis, alis rare reticulatis, stig- mate atro albo-guttato, peristomio modice producto, proboscide breviter geniculata. Whitish-gray; head and legs yellow; wings with a diffuse reticulation, and the black stigma including a limpid drop; oral border moderately prolonged, proboscis shortly geniculated. Long. corp. 0.12 Long. al. 0.13. Head yellowish; the lateral borders of the front, the face, and the much descending cheeks whitish. The bristles on the front black, on the sides of the vertex and posterior orbit white. The face with rather deep subantennal furrows prolonged to the oral border, which is not very projecting. Antenne fulvous, rather short; the anterior corner of the third joint a little acute; the second joint with very short black hairs; antennal bristle black and moderately long, with the pubescence scarcely visible. Tho- rax and scutellum whitish gray, with short pubescence and black bristles. The scutellum bears four bristles, the two apical ones being much shorter and less stout than the lateral ones; its tip is sometimes yellow. The whitish-gray abdomen has two rows of very { : 4 J ; y ‘ TRYPETIDAE. 81 distinct black spots. The hair and even the bristles on the hind border of the last segment are white. The flat ovipositor is glossy- black, as long as the two last segments of the abdomen and mode- rately tapering towards the tip. The legs and anterior cox are dark yellow, with white hairs; the thighs with a blackish stripe somewhat covered with whitish dust. Wings not very narrow, hya- line, with the base very slightly yellowish; their black reticulation is not very dense and not very delicate, extending towards the base of the wing as far as the base of the discal cell, and dissolving towards the axillary angle into some scattered spots; stigma black, with a whitish dot; the middle and posterior transverse veins rather approximate. Hab. Middle States. (Osten-Sacken. ) Observation.—The proboscis of this species being short with the suctorial flaps but moderately prolonged, attention is to be paid to its true place, which is among the species with a geniculated pro- boscis. 15. T. humilis Lozrw. %. (Tab. II, fig. 17.)—Cinerea, capite pedi- busque flavis, femoribus nigris, alis rare reticulatis, stigmate atro non euttato, peristomio valde producto, proboscide geniculata. Cinereous; head and legs yellow, with the femora black; reticulation of the wings diffuse, and the black stigma including no limpid drop; oral border much prolonged ; proboscis geniculated. Long. corp. 0.09. Long. al. 0.1. Among the kindred of the European 7Zryp. elongatula Loew, but in its habit more resembling Zryp. absinthii Fabr. Head yellow, considerably prolonged anteriorly. Front yellow, dis- tinctly margined with white at the orbit; frontal bristles black. Face excavated with the anterior border of the mouth much pro- longed. Antenne bright yellow, proportionately large and broad, reaching as far as the prolonged border of the mouth; the ante- rior corner of the third joint a little pointed ; the second joint with very short black hairs; antennal bristles very long, black, with a very short and hardly visible pubescence. Thorax and scutellum yellowish ashy-gray with short whitish-yellow hairs and black bristles. In the middle of the thorax there are four bristles, the two foremost being very near the suture. Scutellum with only two long bristles rather distant from the tip and not close by its lateral border. Metanotum black with grayish pollen. Abdomen ashy- 6 82 DIPTERA OF NORTH AMERICA. gray with two rows of rather large blackish spots. Its hairs are whitish yellow; some black bristles on the posterior border of the prolonged last segment. ‘Tip of the first joint and the second joint of the cox rather dark yellow. Femora brownish-black, with dark yellow tips. Tibiz and tarsi dark yellow. Wings pro- portionately rather long and narrow. Their reticulation is black, rather diffuse and coarse; the base of the wing as far as the base of the discal cell has no reticulation. The black stigma includes no clear dot. Moreover, the reticulation of the wings is somewhat variable. Transverse veins rather near each other. Hab, Cuba. (Poey.) Observation.—I have a female likewise captured in Cuba, which, I think, belongs to the present species. It resembles the male in everything but the femora, which are darkened to a much smaller extent, and not with black, but brown. The borer is black, flat, about as long as the two last segments of the abdomen taken together. 16. T. solidagimis Firch. % and 9. (Tab. II, fig. 16.)—Rufo ferruginea, capite pedibusque flavioribus, fronte latissima, setis scutelli valde convexi duabus, alis fusco-reticulatis, incisuris una anteriore, duabus posterioribus apiceque hyalinis, parcissime fusco-maculatis. Brownish-ferruginous with the head and legs more yellow; front very broad; scutellum very convex with two bristles. Wings reticulated’ with fuscous having one limpid snace at the costa and two at the posterior border scarcely dotted with fuscous. Long. corp. 0.26. Long. al. 0.26. Syn. Acinia solidaginis Fircu. First Rep. 66. This remarkable species, which, according to Mr. Fitch, produces round galls on the stems of Solidago, has no near relations among the European Z7rypete. In consequence of the extraordinary breadth of its front, the breadth and convexity of its thorax, and the in- flation of its large scutellum, it has the appearance of a large Lipara, Yt is brownish ferruginous. Head more yellow, face almost whitish. The bristles of the unusually broad front are black, smaller and weaker than in most other species, so that one might easily be tempted to refer the species to the Ortalide, if the structure of the auxiliary vein did not prove that it belongs here. Face deepened in the middle, prominent again underneath. . HM. walida Lorw. 9.—Inter majores sui generis; glauco-cinerea, tota opaca, facie latiuscula pallide ochracea, antennis pedibusque nigris, basi tarsorum omnium rufa. Belonging to the largest species of this genus; greenish-gray, opaque every- 154 DIPTERA OF NORTH AMERICA. where; face rather broad, pale ochraceous; antenne and legs black; base of all the tarsi red. Long. corp. 0.12. Long. al. 0.15. Face rather broad, becoming a little broader upwards, only slightly keeled above, ochraceous, with three small bristles on each side. Palpi yellow. Cheeks slightly descending. Antenne black; antennal bristle in the described specimen with five rays. Front greenish-gray and opaque in consequence of its grayish dust; the dot above the antenne has a still duller yellow color than the face and is not conspicuous. Upper side of the thorax and scutellum greenish-gray and opaque from its whitish-gray dust. Pleure a little paler greenish-gray. Abdomen grayish-green, opaque, with the fifth segment considerably longer than the fourth. Legs black; tarsi yellowish-red as far as the end of the first joint; also the knees, chiefly those of the hind legs, are of this color. Poisers yellow. Wings relatively to the length of the body, large, hyaline; the veins in the neighborhood of the base pale ochraceous ; the second segment of the costal vein about twice as long as the third; the posterior transverse vein does not stand quite perpen- dicularly to the longitudinal axis of the wing, but is slightly oblique. Hab. Middle States. (Osten-Sacken.) 6. Hi. formosa Lozrw. 9. (Translated from Berl. Entom. Zeitschr. 1861, p. 355, by R. Osten-Sacken.)—Atra, thoracis dorso, abdominis apice marginibusque nitidis, fronte, thoracis macula laterali permagna scutel- loque aterrimis, opacis, facie, puncto frontali, pleurarumque vitta supe- riore, candidis, femoribus nigris, tibiis tarsisque pallidis, alis cinereo- hyalinis. Dark, thorax above, tip of the abdomen and its borders shining; front, a large spot on the side of the thorax and scutellum deep black, opaque; the face, a dot on the front and a band on the upper side of the pleure shining white, femora black, tibize and tarsi pale, wings cinereous-hya- line. Long. corp. 0.057. Long. al. 0.064. Face moderately convex, not keeled, bright shining white. Cheeks very narrow, black. Front and superior part of occiput deep black, velvety, with a striking shining white frontal mark. Antenne black, third joint rufous, margined with black above, bristle pectinated with scattered black hairs. Thorax very shining above, on each side a large, deep black, velvety lateral spot. HYDRELLINA. 155 Seutellum deep black, opaque, with a narrow subcinereous border. Pleure black, with a broad, shining white band above. Abdomen black, opaque, the apical half as well as the lateral borders shining. Femora black; tibiz and tarsi pale yellowish, the upper edge of the former with a white reflection, terminal joint of the latter black. Halteres pale lemon-yellow. Wings cinereous-hyaline, second segment of the costa somewhat longer than the third ; third longitudinal vein ending at the very tip of the wing; posterior transverse vein occupying the middle between the basis and the tip of the wing. Hab. Pennsylvania. (Osten-Sacken. ) . Observation.—This species, although very much like Philhygria picta Fall. and the allied species, proves to be a true Hydrellia on account of the short and very dense pubescence of its eyes. Gen. Il. PHELWYGRIA Srena. Haliday has employed for this genus the name Hydrina, given by Rob. Desvoidy; but as this name, being derived from Hydra, is also used in the family of Polypz, it seems more advisable to adopt for it the name Philygria of Stenhammar; otherwise this name would not be used at all, the two other genera, which joined with the present, form the genus Philygria of Stenhammar, being already possessed of their authorized names, Hyadina and Axysta. The genus Philygria, taken in the present sense, may be character- ized in the following manner: Second joint of the antenne not unguiculated; antennal bristle with a short pubescence. Eyes dis- tinctly hairy, rather rounded, but higher than broad, slightly pro- minent. Face descending obliquely, narrowed upwards, receding a little towards the mouth, the anterior border of which is a little pointed; on both sides there are distinct bristles. Clypeus unde- veloped; mentum rather thickened; cheeks slightly descending. The costal vein attains the fourth longitudinal vein; the posterior transverse vein is rather distant from the border of the wing. 1. P. fuscicormis Lorw. Fusco-cinerea, abdomine nigricante, facie flavescente, pedibus nigris, tarsis rufis, in apice fuscis, alis cinerascen- tibus, cellula discoidali et gutta pone venam transversam posteriorem limpidioribus, venis transversis fusco-limbatis. Brownish-gray ; abdomen blackish, face yellowish; wings gray with the discoidal cell and a drop behind the posterior transverse vein more hya- 156 DIPTERA OF NORTH AMERICA. line ; transverse veins margined with blackish-brown. Long. corp. 0.9. Long. al. 0.11. It has a certain resemblance with Philygr. femorata Stenh. and interrupta Hal., namely, the form of its face is almost as in the latter, and likewise more yellowish on the middle, whitish on the lateral borders and towards the cheeks. Antenne blackish, ap- pearing whitish-gray in certain directions, brownish on the inferior border only, when held against the light. Thorax grayish-brown, on its anterior border dusted with whitish-gray; its darker stripes are obsolete, but more visible in the neighborhood of the anterior border, where they extend a little into the brighter gray color.. Scutellum as the upper side of the thorax. Pleure gray. Ab- domen grayish-black, more black towards the end, not glossy. Legs black, tarsi yellowish-red as far as the fourth joint. Wings grayish with a hyaline spot behind the posterior transverse vein and with a rather clearer discoidal cell; the clearer color of the latter is only seen if the light shines through the wing and the wing is looked at in an oblique direction, while the clear spot be- hind the posterior transverse vein is distinctly seen in every direc- tion. The two transverse veins have only a very narrow and ill-defined dark margin, and the posterior transverse vein is a little less distant from the posterior border of the wing than is usual in this genus; the second longitudinal vein being very long, the second segment of the costal vein is more than twice as long as the third. Hab. Middle States. (Osten-Sacken. ) 2. P. opposita Lorw. 4%. (Translated from Berl. Entom. Zeitschr. 1861, p. 356, by R. Osten-Sacken.)—Ex cinereo fusca, abdomine atro nitido, alarum venis longitudinalibus secundé, tertid et quartd nigro- punctatis, venis transversis late nigro-limbatis. Cinereous-brown, abdomen black, shining, the second, third and fourth longitudinal veins of the wings spotted with black, transverse veins broadly clouded with black. Long. corp. 0.07—0.09. Long. al. 0.095. Cinereous-brown, opaque. Ocellar triangle large, concolorous, rather indistinctly separated from the remainder of the front. Two basal joints of the antenne black, the third black, with the bases and the apical half impurely rufous. Face narrow, black, with a HYDRELLINA. i whitish pollen, its middle portion flavescent below. | Facial orbite of the eyes narrow, with a white reflection. Thorax obscure, cinereous brown above, with very narrow, obsolete darker lines. Pleure dark cinereous. Scutellum concolorous with the thorax. Abdomen black, very glossy, a large obscurely cinereous opaque basal spot, not attaining the posterior margin of the second seg- ment. Legs yellowish ferruginous, last joint of tarsi black, base of femora sometimes fuscous. Wings cinereous hyaline, veins black; short stumps of veins clouded with black, proceed from the second, third, and fourth longitudinal veins; the third vein emits four such stumps, all of which, except the last, are opposed to similar stumps on the second vein; the last segment of the fourth vein generallyemits two stumps; the ordinary transverse veins are broadly clouded with black. The second segment of the costa is almost twice as long as the third. Hab. Pennsylvania. Washington. (Osten-Sacken.) Observation.—Phil. opposita is very like P. punctato-nervosa Fall., but distinguished by a more brown color, a more narrowed face, darker legs and antenne, a larger portion of the abdomen colored with black and by a smaller number of dots on the wings. The facial orbite of the eyes, which are much narrowed in P. opposita, evidently prove it to be a distinct species. Note.—Some specimens have jive stumps on the third vein, opposed to four on the second, and more than two stumps on the last segment of the fourth vein. O. S. 3%. P. debiliis Lorw. %. (Translated from Berl. Entom. Zeitschr. 1861, p- 356, by R. Osten-Sacken. )—Nigro-cinerea, opaca, antennis totis nigris, fronte atra opaca, triangulo ocellari maximo, nigro-cinereo, ultimo abdo- minis segmento atro, nitido, pedibus obscuris, genibus, tibiarum anteri- orum apice, tarsisque flavescentibus, horum apice nigro, alis cinereo- hyalinis, circa venas transversales infuscatas limpidioribus. Blackish-cinereous, opaque, antennz entirely black, front black, opaque, ocellar triangle very large, blackish-cinereous, last segment of the ab- domen black, shining, feet obscure, knees, tip of the anterior tibie and tarsi yellowish, tip of the latter black, wings cinereous-hyaline, with clearer spaces round the infuscated transverse veins. Long. corp. 0.05. Long. al. 0.064. Blackish-cinereous, opaque. Front black, with a very narrow white marginal line on each side and the rather large ocellar 158 DIPTERA OF NORTH AMERI(CA. triangle, blackish-cinereous. Antenne entirely black. Face yel- lowish, orbits narrow, whitish. Thorax above with very narrow almost obsolete lines. Abdomen a little darker and less opaque than the thorax, last segment black, smooth. Legs blackish, knees and tip of the anterior tibize yellowish, hind tibiz either alto- gether blackish, or marked with a narrow, very obsolete pale ring, tarsi yellowish, their last joints blackish. Halteres impure white, knob somewhat darker. Wings cinereo-hyaline, with clearer spaces round the infuscated transverse veins, second costal seg- ment almost twice as long as the third. Hab, Pennsylvania. (Osten-Sacken.) Observation.—This species is very like Philygr. femorata Stenh., but distinguished by entirely black antenne, by a less obtuse an- terior angle of the ocellar triangle and by a conspicuously longer second costal segment. Ill. EPHYDRINA. The Ephydrina are well characterized by their quite naked, prom- inent, and usually much rounded eyes, by the second joint of their antenne not unguiculated, and by the middle tibize without spinous bristles on their upper side. By the genus Pelina they are nearest related to the latter genera of Hydrellina. The mentum is much enlarged and swollen in almost all the genera, the oral cavity generally of large width. The genera with less widely opened mouth, as Pelina and Ochthera, so manifestly bear the chief cha- racters of Hphydrina, that no doubt can arise about their systema- tic position. The genera of Ephydrina hitherto established may be arranged as follows :— Division 1. Clypeus prominent. ‘ The small basal cells of the wings complete. CanacE Hal. The small basal cells of the wings wanting. 2 2 | Oral cavity proportionally narrow. 3 Oral cavity exceedingly wide. 4 3 { Fore femora not thickened. Peuina Hal. Fore femora much thickened. OcuTHERA Latr. Costal vein attaining the third longitudinal vein. | BRACHYDEUTERA Loew. Costal vein attaining the fourth longitudinal vein. 5 EPHYDRINA. 159 (Face on each side with a long bristle; lateral border of the mouth | without bristles. Parypra Stenh. Face on each side with several long bristles; lateral border of the L mouth with bristles. Hatmorora Hal. Division 2. Clypeus retracted in the oral cavity. Claws almost straight, pulvilli indistinct. Epuypra Fail. { Claws curved, pulvilli distinct. 2 Oral border quite bare. InyrHeA fal. { Oral border with bristles. 3 f Antennal bristle bare. Ticnomyza Macq. Antennal bristle not bare. 4 { Antennal bristle pubescent. Scaretta R. Desv. Antennal bristle pectinated. Canta R. Desv. The North American Hphydrina known to me belong to the five genera: Ochthera, Brachydeutera, Parydra, Ephydra, and Scatella. Gen. I. OCHTHERA Latr. One of the most distinct genera of Hphydrina. Front very broad; antennal bristle above, with three rays. Face above moderately broad, with two furrow-like longitudinal impressions approaching each other very much on the middle, then diverging from each other as they descend, and finally continued in a direc- tion parallel to the lateral border of the mouth ; on the surface of the face there are some fine and short hairs, but no bristles at all. The face and cheeks descend very deep beneath the large promi- nent eyes, but are again contracted sensibly towards the opening of the mouth, rendering it smaller than in any of the other genera of Hphydrina. Clypeus having the form of a small flat lamella, projecting beyond the anterior border of the mouth. The fore coxe a little prolonged; the fore femora exceedingly swollen, furrowed on their under side for.the reception of the curved tibiz, which terminate in a spine, and beset with a few small bristles; the first joint of the hind tarsi more or less thickened. The costal vein of the wings reaches to the fourth longitudinal vein; the second segment of the costa is proportionally very long; the pos- terior transverse vein is very oblique; the third and fourth longi- tudinal veins converge rather remarkably towards their ends. Observation.—Th. Say has described a fly as Ochthera empifor- mis; but on a closer consideration of his observations on the an- terior femora, the color of the insect, and its small size, it becomes 160 DIPTERA OF NORTH AMERICA. indubitable that he has been deceived relatively to the true charac- ters of the genus Ochthera, and it is to be supposed that his Ochthera emptformis is an insect belonging to the Tachydromide. Synopsis of the Species. Face with deep black furrows and dots. 1 exsculpta, n. sp. { Face without black furrows and dots. 2 9 { First joint of the hind tarsi but little swollen. 2 mantis Deg. First joint of the hind tarsi much swollen. 3 3 { Tarsi black, face broad. 3 rapax, 0. sp. Tarsi red, face narrow. 4 tuberculata, n. sp. i. O. exsculipta Lozrw. %.—Facies angustissima, lineis punctisque exsculptis ornata; tibiz antice rufe. Face exceedingly narrow, with shining-black furrows and impressed black dots; fore tibie red. Long. corp. 0.16. Long. al. 0.15. A readily distinguished species, not quite equalling the three following in size. Front narrower than in all the other known “species, almost entirely covered with a large shining spot having the form of a regular trapezium, near which the color is velvety- black at the borders of the eyes and brownish on the anterior cor- ners of the front. Eyes larger and longer than in the other spe- cies. Face unusually narrow, dusted with yellow; a shining black furrow runs from the tubercle placed in the middle of the face to the border of the mouth, and has on each side a similar furrow, the under part of which is laterally continued in a parallel direction to the border of the mouth; the lateral parts of the face have some impressed, rather coarse, dots. Clypeus sensibly smaller than in the other species. The fore femora black; the fore tibie and tarsi red, the first joint of the latter a little longer and a little less pear-shaped than in the other species. The middle and the hind legs black; the tips of the knees and the tibie on their first third red; the first joint of the middle tarsi red as far as the tip, the following joints being so only at the base; the first joint of the hind tarsi is very little swollen, the second and following joints red at the base. Hab. Cuba. (Poey.) OCHTHERA, 161 2. O. mantis Dec. % and 9.—Pedes nigri, tibiis intermediis non dilatatis, tarsorum intermediorum basi rufa, metatarso postico modice incrassato. Legs black; middle tibiz not enlarged, middle tarsi red at the base, first joint of the hind tarsi only little swollen. Long. corp. 0.24—0.25. Long. al. 0.2. I am quite unable to distinguish this species, so common in the Middle States of the Union, from the European Ochth. mantis. It is true, indeed, that in most American specimens the eyes are a little more distant from each other than in the Kuropean; but this difference in some cases disappears entirely; nor do the European specimens altogether agree in this respect. The color of the face is likewise as variable as in the European specimens. As mark- ings, distinguishing this species from the two next ones, which resemble it very much, the following may be noted: The ground color of the legs, in well-colored specimens, is black, only the mid- dle tarsi being red from their base for a very variable extent. The middle tibiz are considerably narrower than in Ochth. rapax and tuberculata, and entirely dusted on their anterior side; the first joint of the hind tarsi is very little swollen and rather long. Hab. Middle States. (Osten-Sacken. ) 3. O. tuberculata Lorw. *.—Pedes nigri, tibiis intermediis subdila- tatis, tarsis omnibus obscure rufis, metatarso postico nigro, valde incras- sato. Legs black; middle tibie a little enlarged; all the tarsi dark red, the first joint of the hind tarsi black and very much swollen. Long. corp. 0.18. Long. al. 0.17. Very similar to Ochth. mantis, but its face is considerably nar- rower in its upper part, and the elevation in the middle of it forms more distinctly a small double knob. The middle tibiz are broader, on their outer edge sharper, and polished on a great part of its anterior side; the knees of the hind legs and all the tarsi brown- ish-red, the last joint of the latter more brownish; the first joint of the hindmost tarsi black, much swollen. Hab. Illinois. (Schaum. ) 1] , 162 DIPTERA OF NORTH AMERICA. 4. ©. rapax Lorw. %.—Pedes nigri, tibiis intermediis subdilatatis, tarsorum intermediorum basi rufa, metatarso postico valde incrassato. Legs black, middle tibiz a little enlarged, middle tarsi red at the base, first joint of the hind tarsi much swollen. Long. corp. 0.16. Long. al. 0.17. Very similar to Ochth. tuberculata in the form of the legs, only the middle tibiz are of a less equal breadth, but become sensibly broader towards their end. It is also very easily distinguished from Ochth. tuberculata by its broader and shorter face showing only an exceedingly flat elevation in the middle. Legs entirely black, only at the base of the first joint of the middle tarsi there is a slight red tinge; the first joint of the hindmost tarsi is still a little shorter and thicker than in Ochth. mantis. The wings have rather a more distinct blackish-gray clouding than in the other species. It differs from Ochth. mantis by its shorter face, the flat- ter elevation in the middle of it, and the much shorter and thicker basal joint of its posterior tarsi. Hab. Carolina. (Zimmermann.) Gen. I. BRACHYDEUTERA Loew. Eyes naked, proportionately rather large. Front exceedingly broad. Second joint of the antenne not unguiculated, as large as the third, the latter rounded; antennal bristle with unusually -long rays. Upper part of the face deeply impressed on both sides, and with a keel, resembling a nose, in the middle; the lower part of it is very prominent. The anterior end of the oral margin very much ascending and allowing the convex clypeus to appear. Be- sides, the whole face is quite bare, with the cheeks descending but very little beneath the eyes. Legs quite bare, rather slender and long; anterior tarsi elongated and exceedingly slender; claws small and delicate, pulvilli rather indistinct. Costal vein of the wing reaching only to the tip of the third longitudinal vein; second longitudinal vein exceedingly short and curved towards the costa like an arch, so that the third segment of the costa is several times longer than the second; the small transverse vein is unusually dis- tant from the base of the wing; the posterior transverse vein is at a little distance from the border of the wing and has a nearly per- pendicular position; the last segment of the fourth longitudinal vein is much attenuated. 9 BRACHYDEUTERA. 163 1. B. dimidiata Lorw. ¢.—Superius brunnea, inferius tota can- dida. On the upper side brown, on the whole under side white. Long. corp. 0.13—0.14. Long. al. 0.14—17. Dark brown and entirely opaque on the whole upper side. In well preserved specimens there are, on the upper side of the thorax, two somewhat grayish-brown, approximated, longitudinal lines, which commence at the anterior end of the thorax and stop before reaching the posterior end; between them there is the trace of a fine pate middle line, which becomes more distinct at the posterior end of the thorax and is continued through the scutellum; there are besides two other longitudinal lines, which, being nearer the lateral border and interrupted in the neighborhood of the suture, are not truncated posteriorly and continue indistinctly on the lateral borders of the scutellun. Some specimens show very faint traces of these markings of the thorax. The keel, resembling a nose, on the upper part of the face is darf brown ; the remainder of the face together with the cheeks, and the inferior half of the occiput, breast, and pleurz, as well as the part of the upper abdominal plates which are much turned downwards, are almost silvery white; this color on the last abdominal segments ascends a little to the upper side of the posterior borders. Legs in well-colored indi- viduals blackish-brown, only the apical third of the femora and the first half of the posterior tibiz being more or less reddish-brown; | in less distinctly colored specimens often only the tips of the tibise and the tarsi are blackish-brown, all the remainder being brownish- yellow. Wings hyaline with brownish-black veins, sometimes more clouded with grayish in the neighborhood of the costa; the third segment of the costa is twice and a half or three times longer than the second. Hab. Washington. (Osten-Sacken.) Observation.—A female sent by Poey from Cuba differs from those received from Baron Osten-Sacken by its brown wing-veins and clay-yellow legs, the tarsi only being of a dark-brown color; but it is only a paler colored specimen of Brachyd. dimidiata, which became still paler in the course of time. 164 DIPTERA OF NORTH AMERICA. Gen. Ill. PARYWDRA 5rTeEnz. Form of the body short and stout. Thorax and scutellum very convex. Front very broad. Antennal bristle on the upper side with a short pubescence, which in some species is difficult to perceive; bare towards the end. Face very broad, not so much vaulted as in the true Hphydre, but with a convexity descending more obliquely, on each side with a very characteristic, long, curved, hair-like bristle, beneath which are some shorter hairs, hardly per- ceptible in some species. Clypeus prominent. Cheeks descend- ing beneath the eyes. Lateral borders of the mouth quite bare. Mentum exceedingly thickened. Legs short and rather clumsy, The small transverse vein of the wings is behind the middle of the discoidal cell, consequently proportionately far from the base of the wing; the posterior transverse vein is not very near the border of the wing, and has a more or less oblique position; the alula is strikingly large. + The species of this genus may be divided into two sections, the first of which comprises thickiy hairy species with very convex faces. In North America only naked species, belonging to the second section, have been as yet discovered ; they are very similar to the European species of this section; however, they appear to have more plastic differences than these, and to be consequently more | easily distinguished from each other. This can be said at least of ‘the four species known to me, none of which is provided with the small appendage of the second longitudinal vein distinguishing some of the European species. Synopsis of the Species.* Scutellum with conical warts. 2 Scutellum without conical warts. 3 eae with two warts. 1 bituberculata, n. sp. Scutellum with four warts. 2 quadrituberculata, n. sp. Face nearly perpendicular. 3 breviceps, n. sp. Face descending obliquely. 4 paullula, n. sp. * The species No. 5 has not been included in this synopsis.—0. S. PARYDRA. 165 1. P. bituberculata Lorw. % and 9.—Ex brunneo enescens, alis cinereo-hyalinis, venis transversis nigro-limbatis, scutello bituber- culato. Brassy-brown, wings grayish with black margins of the transverse veins ; scutellum with two warts. Long. corp. 0.17—0.18. Long. al. 0.17. Very similar to Parydra aquila Fall. in size, form, and color. Face proportionally not very prominent, dusted with brown; the characteristic bristle on each side proportionally slender ; upwards near it, but a little more towards the middle of the face, is a rather distinct, impressed spot; the shorter hairs inserted beneath it are hardly perceptible. Orbitz and cheeks very broad; clypeus very prominent. Antenne black.; antennal bristle hair-like and bare towards the end, stouter about the middle, and with a short pubes- cence on the upper side. Upper side of the thorax with rather indistinct stripes; the rows of fine punctures, including the stripes, a little more distinct than in the other species. Scntellum at the tip with two not approximated warts, bearing at the end the two usual small bristles of the scutellum. Legs dark, with only the tarsi usually red with black tips; there are individuals with much darker tarsi; the white reflection at the base and tip of the tibiz not very striking. Wings clouded with grayish, having brownish- black veins and black margins of the transverse veins, in the neighborhood of which the surface of the wings is more distinctly hyaline ; the second segment of the costa is nearly twice as long as the third; the ends of the third and fourth longitudinal veins parallel. There are some specimens, the faces of which are dusted with dull whitish ; but these certainly belong to the same species. Hab. Middle States. (Osten-Sacken. ) 2. P. quadrituberculata Loew. % and 9.—Nigro-enea, alis hyalinis, venis transversis interdum nigro-limbatis, scutello quadritu- berculato. Brassy-black, wings hyaline, transverse veins sometimes margined with blackish ; scutellum with four warts. Long. corp. 0.17. Long. al. 0.17. Similar to the preceding species in color, but a little blacker, not quite equalling it in size. Face generally dusted with white, the dust less frequently quite yellowish on the upper part; the under part of the face projects somewhat less than in Parydra bitu- berculata; the characteristic bristle on each side is very slender and 166 DIPTERA OF NORTH AMERICA. rather short; no impressed spot in its neighborhood; the short small hairs beneath it are scarcely visible; eye-rings and cheeks very broad, but the latter a little narrower than in Parydr. bitu- berculata. Antenne black; the bristle towards its end excessively slender, being stouter to about its middle, and provided on its upper side with a hardly distinguishable pubescence. Thorax rather indistinctly striped; the two longitudinal lines formed by fine scarcely visible punctures. Scutellum on its tip with two very approximated conical warts, on the tips of which are the two small bristles usually inserted at the end of the scutellum; on each side there is a similar tubercle, ending likewise ina small bristle. Tibize and tarsi usually brownish-red, with blackened tips; but there are specimens with the tibiz quite black and the tarsi brown only at the base, the remainder being quite black; only in recently devel- oped specimens the anterior side of the tibize is dusted with white on their whole length; this white dust is generally interrupted behind the middle of the tibiz. Wings proportionally a little longer than in the other species; the second segment of the costa is about one-half longer than the third; the last segment of the fourth longitudinal vein is unusually long, showing the trace of a slight convergency towards the third longitudinal vein; the fifth longitudinal vein is truncated immediately behind the posterior transverse vein; otherwise the wings are hyaline with a very faint grayish tinge; the veins are brownish-black as far as the base, or frequently brown or brownish-yellow in the neighborhood of the base; sometimes this brownish-yellow color on the costal vein ex- tends to far beyond the middle of the wing; the transverse veins in most specimens are not margined, or show only a trace of black- ish-gray clouding ; but sometimes they have rather broad blackish margins, the surface of the wing being clearer in their neighborhood; these margins are found particularly in specimens which have a blacker coloration and almost entirely black legs. The deviations are more remarkable than those occurring in the other species of Parydra; but there are various transitions between them, which make it improbable that there is more than one species. Hab. Middle States. (Osten-Sacken.) PARYDRA. 167 3. P. breviceps Lozw. 9.—Nigro-xnea, facie subperpendiculari, scu- tello mutico, venis alarum transversis obscure limbatis. Blackish-aeneous, face rather perpendicular, scutellum without warts ; transverse veins of the wing margined with obscure. Long. corp. 0.16. Long. al. 0.16. Blackish-aeneous. Face dusted with brown, less projecting than in any other Parydra known to me, consequently almost quite perpendicular. Orbits excessively narrow ; the characteris- tic small bristle on each side of the face is of moderate length and rather slender; beneath it there are a few shorter distinctly visible hairs. Clypeus very narrow; cheeks broad. Antenne black; the bristle rather slender even at its basal half, hair-like towards its end, with a short but distinct pubescence on its upper side reaching beyond the middle. Thorax rather indistinctly striped ; ,scutellum without tubercles, as is the case in the European species. Femora black. Tibiz reddish-brown, with a little white reflection at the base and tip, but in the specimen now before me it is too rubbed off to afford any certainty about its extent and nature. Abdomen rather shining, almost with a band of whitish-gray hoar on the posterior border of each segment. Wings rather tinged with grayish, having blackish margins on the transverse veins, the surface of the wings being more hyaline in their neighborhood. The second longitudinal vein is considerably shorter than in the two preceding species, in consequence of which the second segment of the costa is but little longer than the third; the ends of the third and fourth longitudinal veins are parallel; the fifth longitu- dinal vein curves a little posteriorly at the second half of the dis- coidal cell. Hab. Middle States. (Osten-Sacken. ) 4. P. paullula Lozew. 9.—Omnium minutissima, facie proclivi, genis angustis. Very small; face projecting obliquely, cheeks very narrow. Long. corp. 0.06—0.07. Long. al. 0.06—0.07. A very small species, of which I have only a single somewhat immature specimen, so that I am unable to say more of its colors than that they appear to differ little from those of the other species. Face descending obliquely, and therefore rather projecting with its lower parts; the characteristic bristle on each side rather long 168 DIPTERA OF NORTH AMERICA. and unusually near the border of the mouth. Clypeus and cheeks excessively narrow. Antenne black, the bristle with fine pubes- cence to beyond the middle. Scutellum without marginal tuber- cles; the two small bristles on its tip rather distant from each other. Wings in better colored individuals undoubtedly with much gray clouding and blackish margins of the transverse veins, in the neighborhood of which the surface of the wings is more glossy; the second segment of the costa is only a fifth longer than the third; the ends of the third and fourth longitudinal veins with a trace of a slight divergency ; the fifth longitudinal vein extends to the border of the wing. This species is very similar to Parydra pusilla Meig. 5. P. abbreviata Lorw. %. (Translated from Berl. Entom. Zeitschr. * 1861, p. 357, by R. Osten-Sacken.)—Minuta, antennis tibiisque ferru- gineis; ale infuscate guttis aliquot hyalinis distinctissimis ornate, segmento cost tertio secundi longitudinem paulo excedente, venis lon- gitudinalibus tertia et quarta distincte divergentibus. Small, antenne and tibie ferruginous; wings infuscated, with several hyaline, very distinct dots, third segment of the costa somewhat exceed- ing the second in length, third and fourth longitudinal veins distinctly diverging. Long. corp. 0.07. Long. al. 0.07. Olivaceous. Antenne obscure ferruginous, the two first seg- ments and the upper edge of the third, black; the whole bristle has a short pubescence above. Face moderately sloping, the or- dinary bristle on each side is not more approximated to the peri- stoma than in most of the congeners. Cheeks narrow. Scutellum not tuberculated. Legs black, knees, tibize and base of tarsi fer- ruginous ; the whitish pollen, generally extant on the tibie of the allied species, is wanting here. Wings rather short, distinctly infuseated, marked with seven rather large hyaline spots; second longitudinal vein with a very short, hardly perceptible appendage ; third and fourth veins diverging near the apex; second costal segment almost equal in length to the third. Hab, Pennsylvania. (Osten-Sacken. ) EPHYDRA. 169 Gen. IV. EPH YDRA Fatt. The hairy, exceedingly vaulted, and very projecting face, the very large opening of the mouth with ciliated border, the con- cealed clypeus, the nearly straight and rather long claws, and the indistinet pulvilli, characterize the genus Hphydra. The bris- tle of the antenne is usually pubescent, sometimes almost pecti- nated with short rays. The genera nearest related to Hphydra are Cenia and Scatella, the claws of which are curved and the pulyilli distinct. The genus Z7%chomyza is not so near to the genus Ephydra and may be easily distinguished from it by its unusually large pulvilli. 1. E. atro-virens Lorw. % and 2.—Obscure viridis, nitida brun- neo-pollinosa, antennarum articulo tertio unipili, seta brevissime pube- rula; % quinto abdominis segmento precedente breviore, hypopygio brevi, marginem segmenti quarti posteriorem non attingente. Dark green, glossy, dusted with brown; third joint of the antenne with a hair, the terminal bristle with very short pubescence; %, fifth segment of the abdomen shorter than the fourth, hypopygium short, not reach- ing the posterior border of the fourth ventral segment. Long. corp. 0.17 —0.18. Long. al. 0.17—0.18. Exceedingly similar to the European Hphydra micans Hal., so that I am unable to distinguish the female of the two species, but the much shorter hypopygium of the male characterizes the species as a distinct one. Dark metallic green, very shining, but with brown hoar on the front, thorax, and abdomen, which, distinctly appearing on an oblique inspection of these parts of the body, makes them appear brown and opaque; this brown color is least visible on the abdomen. Antenne black; third joint on its outer side near the base with a single bristle-shaped hair, which is longer than the joint itself; antennal bristle only with very short pubes- cence. The front and the sloping space extended between the antenne and the highest elevation of the face are shining green or bluish-green. Face dusted with white, which, according to the observations made in the allied species, may not be a constant marking; border of the mouth in both sexes with short and rather fine cilia, quite as in Ephydr. micans Hal. The ground color of the legs is greenish-black, covered with dust, shining blackish- green on the rubbed parts. Wings clouded with blackish-gray. Hab. Middle States. (Osten-Sacken.) 170 DIPTERA OF NORTH AMERICA. Gen. V. SCATELLA Ros. Dzsyv. This genus contains only smaller and generally not metallic species. Front and face very broad; eyes rounded; face usually very convex, hairy and bristled; border of the mouth ciliated ; opening of the mouth wide; clypeus concealed; cheeks moderately broad; mentum swollen. Second joint of the antenne not ungui- culated ; antennal bristle with fine, usually very short pubescence. Claws curved, pulvilli distinct. Costal vein of the wings reaching to the tip of the fourth longitudinal vein; the small transverse vein generally almost exactly beneath the tip of the first longitudi- nal vein; the posterior transverse vein not approaching the border of the wing. The nearest genus is Cenia, differing, however, from Scatella by the pectinated bristle of its antenne. 1. S. favillacea Lorw. 9.—Cinerea, facie alba, alis cinereo-hyalinis, obsolete quadriguttatis. Ashy-gray; face white; wings grayish-hyaline with four indistinct clear drops. Long. corp. 0.12—0.13. Long. al. 0.13. This species resembles most the European S. sorbillans Hal., which is identical with S. argyrostoma Stenh., but differs from it by its more considerable size, more roughly haired face and gray color of the dust on the posterior part of the cheeks, on the infe- rior part of the occiput, on the pleurz and under side of the abdo- men, on all which parts it is whitish in that species; S. favillacea wants also the clear drop lying beyond the posterior transverse vein in S. argyrostoma. The upper side of the whole body is covered with grayish-brown dust, which on the middle of the tho- rax and on the scutellum does not conceal the shining of the ground color; the large spot lying on the middle of the front is shining greenish. Face very convex, dusted with snowy white, with rather rough hair and the usual row of curved upwards bristles. Open- ing of the mouth wide, with distinct black cilia on the borders. Antenne black; the pubescence of the bristle is a little longer and more distinct than in most species of this genus. Upper side of the thorax not distinctly striped. Pleurz dusted with yellowish- gray, on their superior border with rather brown dust. Under side of the abdomen, femora, and upper side of the tibize with gray dust. Wings clouded with grayish, having black veins; of the five clear drops, peculiar to so many species of this genus, that SCATELLA. . hel lying beyond the posterior transverse vein is entirely wanting, and the remaining are rather indistinct; the second segment of the costa is at least four times as long as the third; the third and fourth longitudinal veins are parallel towards their ends. Hab. Middle States. (Osten-Sacken. ) 2.8. lugems Lorw. 4% and ?.—Nigra; ale nigricantes, guttis hyali- nis quinque in disco duabusque obsoletioribus in apice picte. Black ; wings blackish with five clear drops in the middle and two more indistinct ones towards the tip. Long. corp. 0.11. Long. al. 0.13. It differs from the European Scat, stagnalis only by somewhat more acute wings, its somewhat less convex face, and the stripes of the thorax being a little more distinct; perhaps on examining a larger number of specimens it may prove to be only a variety of it. Black; face with brownish-gray dust, rather convex, only a little impressed beneath each antenna, hairy and bristled, with distinct black cilia on the border of the mouth. Antenne black ; the bristle with an excessively short, but yet distinct pubescence. Cheeks exceedingly narrow. Front dusted with grayish-brown, the spot on the middle of it a little glittering. Upper side of the thorax likewise dusted with brown, but not without all gloss, with two distinct whitish-gray longitudinal stripes, but little distant from each other and beginning on the anterior border, but not reaching nearly to the posterior border; besides there are two short lateral stripes of the same color, beginning at the shoulder- corner. Scutellum of the color of the upper side of the thorax, only a little more glossy. Abdomen black, rather glossy towards the end: the fifth abdominal segment of the male is almost twice as long as the fourth. Legs entirely black. Wings clouded with black, having five glassy drops on the middle, in the usual position ; besides there is an obsolete spot, forming an indistinct clear drop near the border of the wing between the tip of the second and third longitudinal veins, and another still less perceptible spot in the cloudy color beyond the tip of the third longitudinal vein. Hab. Middle States. (Osten-Sacken). 172 DIPTERA OF NORTH AMERICA. 3. 8S. obsoleta Lorw. 9. (Translated from Berl. Entom. Zeitschr. 1861, p- 358, by R. Osten-Sacken.)—Opaca, capite toto, scutello pleurisque ex flavo, pectore et abdomine ex cano cinereis, antennis pedibusque nigris ; ale hyaline, dilute cinerascentes, guttis limpidioribus quinque obsoletis- simis. Opaque, the whole head, scutellum and pleure yellowish-cinereous, pectus and abdomen hoary-cinereous, antenne and feet black ; wings hyaline, with a pale cinereous tinge; five almost obsolete clear spots. Long. corp. 0.07. Long. al. 0.09. Head altogether yellowish-cinereous, antennz black, face very vaulted,* peristoma ciliated with moderate hairs. Thorax conco- lorous with the head, pectus subglaucous. Scutellum yellowish- cinereous. Abdomen hoary-cinereous, subglaucous, opaque. Legs altogether black, slightly pollinose with white. Halteres impure yellow, stem brown. Wings hyaline, tinged with very pale cine- reous, marked with five clear very obsolete spots; transverse veins not infuscated ; second costal segment more than thrice longer than the third. Hab. Washington. (Osten-Sacken. ) * The original has fornicatus, which means forming a rounded arch with an empty space below.—O. 8. V. ON THE NORTH AMERICAN CECIDOMYIDAE, BY BARON R. OSTEN-SACKEN. It is a peculiarity of the family of Cectdomyide that its natural history has always been studied in close connection with its classi- fication. This is owing chiefly to the fact that the gall, the produce of the insect in its first stage of life, is generally a more striking object in nature than the insect itself. The latter small, tiny, dif- ficult to preserve on account of their extreme delicacy, still more difficult to distinguish from their congeners on account of the uni- formity of their appearance and coloring, would afford a very un- satisfactory object of study, unless in connection with the varied deformations which their larvae produce on plants. The study of this family, different in this respect from most of the other families of insects, cannot be prosecuted apart from the observation of living nature, and for this very reason will always be a monopoly of the naturalist so situated as to afford such observations. The aim of the present paper is to direct the attention of American entomologists to this most interesting subject, by giving an account of the observations already made on the North Ameri- ean Cecidomyide, as well as a general introduction to the study of the habits and the classification of this family. The latter has been extracted chiefly from the two following admirable monographs :— Lorw, Dr. H. Dipterologische Beitrige, Part fourth, Posen, 1850, with a plate. (Contains a monograph of the European Cecidomyidz.) Winnertz, J. Beitrag zu einer Monographie der Gallmiicken. In the Lin- nea entomologica, Vol. VIII, Berlin, 1853, with four plates. I. On the classification of the CECIDOMYID™. In the sketch of a systematical distribution of the Diptera, given by Prof. H. Loew in this volume, he has mentioned the difficulties attending a sharp definition of this family, and has shown that it may be naturally divided in two sections. The species embraced in the first section, which he calls Cecido- myina, have four longitudinal veins on the wings, the last two of 174 DIPTERA OF NORTH AMERICA. which often coalesce in the beginning of their course, forming a more or less distinct fork. They have no ocelli, and the first joint of their tarsi is much saortened. The second section, which Prof. Loew ealls Anaretina, has one longitudinal vein more, which is inserted between the second and third veins of the first section; this supplementary vein is simple in Campylomyza and fureate in all the other genera. The first tarsal joint is not shortened, and in all the genera, with the excep- tion of Cecidogona, there are distinct ocelli. The first section, which contains all the gall-producing Ceectdo- myide at present known, comprises two genera of Meigen and a third genus, discovered by Mr. Winnertz, and of which but a sin- gle species is described. These three genera are easily distin- guished by the neuration of their wings, which are always pubes- cent, and may be characterized as follows :— Cecidomyia Meig. Three or four longitudinal veins; in the first case the third vein is forked, thus representing the third and fourth veins, which are coalescent in the greater part of their extent (figs. 1, 2, and 4; in some rare cases a branch of this fork or the whole Fig. 1. Cecidomyia. Diplosis Fig. 3. Fig. 4. Colpodia. Epidosis. Fig. 5. fork becomes obsolete, as in fig. 3); in the second case all the four veins are simple (fig. 5). Surface of the wings hairy ; margins with long cilia. Antenne long, moniliform or cylin- drical, generally verticillate, seldom without verticils, from 13 to 86-jointed. Asynapta. CECIDOMYTA. 175 Spaniocera Winn. Three longitudinal veins, which are all sim- ple (not forked); the first close by the costa, the second at some distance from it, but reaching the margin of the wing before its tip (fig. 6). Hairs on the surface of the wing scaly. Antenne filiform, 13-jointed, joints elongated, eylindrical, with a short pubescence and without verticils. Lastoptera Meig. Three longitudinal veins, the first and second of which run very near the costa and are so closely approximated as to be hardly discernible (fig. 7). Wings rather short and broad. An- tenne from 16 to 26-jointed; joints subglobular, sessile, with short verticils. (The sub-genus Clinorhyncha Lw. has been formed of the Lasioptere, having Taeia toe the mouth prolonged in a rostrum. ) The considerable number of species contained in the genus Cec?- domyia Meig. and the great variety of their structure have made a subdivision necessary. The following tabular arrangement of the sub-genera now adopted has been extracted, with a few modi- fications, from Mr. Winnertz’s work, although the subdivision itself is chiefly due to Mr. Loew. Fig. 6. Spanivcera. Fig. 7. CECIDOMYIA Merc. I. Wings with three longitudinal veins, the third either forming a fork (figs. 1,2, and 4), or becoming more or less obsolete towards the tip (fig. 3).* A. Cross-vein placed between the root and the tip of the first longitudinal vein, as in figs. 1—8: (in this section the cross-vein is frequently almost obsolete.) Cecidomyia Loew. The second longitudinal vein reaches the mar- gin of the wing a little before its tip (although in most cases this distance is very short, as in fig. 1). Generally the same number of joints in the antenne of the g and 9; joints either * In examining the wings of the Cecidomyiz, care must be taken not to mistake for a vein a longitudinal fold which generally exists between the second and third longitudinal veins. 176 DIPTERA OF NORTH AMERICA. pedicelled or sessile (sometimes pedicelled in the ¢ and sessile in the 2; sometimes of the same structure, pedicelled or ses- sile, in both sexes). Diplosis Loew. The second longitudinal vein reaches the margin of the wing at or beyond its tip (fig. 2). Antenne of the male 26 (2 + 24) jointed, sometimes with one rudimental joint more; joints pedicelled, simple joints alternating with double ones (Tab. I, f. 11 and 12), seldom all joints simple. Antenne of the 2 14 (2 + 12) jointed, sometinies with one rudimental joint more; joints pedicelled, cylindrical. Asphondylia Lw. The second longitudinal vein reaches the margin of the wing a little beyond its tip (as in fig. 2). Antenne of both sexes with the same number of joints; the latter cylin- drical, sessile, with a short pubescence and without verticils. (A single European species is known. ) Hormomyta Lw. The second longitudinal vein reaches the margin of the wing either at or beyond the tip. Thorax more or less gibbose, frequently extending over the head in the form of a hood, Joints of the ¢ antenne pedicelled; those of the ? pedicelled or sessile. Colpodia Winn. The second longitudinal vein forms a curve before the cross-vein and joins the margin a little beyond the tip of the wing (fig. 3). Cross-vein rather large, oblique. (A single European species is known in the female sex only; the joints of its antenne are pedicelled. This sub-genus, which is un- known to me, must be very. difficult to distinguish from Epz- dosis.) : B.- Cross-vein very oblique, originating at the root of the first ' longitudinal vein (fig. 4).* Dirhiza Lw. Second longitudinal vein hardly undulating before the cross-vein; joints of the antenne sessile or almost sessile in both sexes. (A single species is known.) * The sections A and B, as defined by MM. Loew and Winnertz, seem to be somewhat difficult to distinguish. According to the latter, the cross vein in the section B almost assumes the appearance of an intercalary longitudinal vein; it begins at the root of the first longitudinal vein, runs, although very indistinct, alongside of it and then turns obliquely towards the second longitudinal vein, which thus almost appears to be its continu- ation, or, in other words, to have two roots. CECIDOMYIA. LTT Epidosis Lw. Second longitudinal vein sinuose before the cross- vein (fig. 4); joints of the antenne pedicelled in both sexes ; their number variable. g II. Wings with four longitudinal veins (fig. 5). Asynapta Lw. The cross-vein is sometimes like that in section A, and then the second longitudinal vein is not sinuated; some- times as in section B; then the second longitudinal vein is sinuated, like in Hpidosis (fig. 5); in this case also the collare is a little prolonged. The classification of the section Anaretina Loew, is very imper- fect; almost nothing is known about their habits, and even their position in the system is doubtful. Mr. Loew considers them, at least provisionally, as a sub-section of the Cecidomyide, whereas Mr. Winnertz prefers to isolate them as a distinct family, placed between the Cectdomyide and the Mycetophihde, and having many points of relationship to both. Following the authority of Mr. Loew in this volume (p. 7), I will confine myself to the enumeration of the genera which he Tefers to this section, adding only short sketches of their characters as I find them in the former writers. Z I. Ocelli extant; Wings bare or almost bare; third longitudinal vein forked, the two following veins simple. Antenne 16-jointed; % verticillate, joints pedicelled; 9 pubes- cent, joints sessile; branches of the fork of the 3d longitudinal vein very arcuated at base (fig. 8, wing). ZYGONEURA Meig. Antenne 9-jointed, short, slightly pubescent; joints subsessile, sub- globose (fig. 9, wing). Anarete Lal. Wings pubescent; Third longitudinal vein forked. The upper branch of the fork forms a double curve, almost in the shape of an §; (see Plate I, fig. 13.) TritozyGa Lw. The upper branch of the fork forms a single smooth curve; 4 antenne 16-jointed, verticillate, joints pedieelled; 9 antenne 10-jointed, pilose, joints moniliform (fig. 10, wing). Catocua Hal. 12 178 DIPTERA OF NORTH AMERICA. Fourth longitudinal vein forked ; antenne 11-20-jointed; % moni- liform, pilose ; joints pedicelled ; 9 submoniliform, joints sessile, pubescent (fig. 11, wing). Campytomyza Meig. II. Ocelli wanting; third longitudinal vein forked; first longitudinal vein very short; wings pubescent; antenne 4 moniliform, verticillate ; ¢? submoniliform, pubescent. Antenne 16-jointed (fig. 12, wing). Lestremia Macq. Antenne 11-jointed. Crcipocona Lw. Fig. 8. Fig. 9. Fig. 10. Zygoneura. Anarete. Catocha, Fig. 11. Fig. 12. Campylomyza. Lestremia. For further details as well as for the references, see Walker, Diptera Britannica, Vol. II, which also contains beautiful figures of all the genera. As to the new genus Z’ritozyga Lw., formed on an American species, Mr. Loew thus characterizes it in a manuscript note of his :— ‘‘The whole structure of its body shows the nearest relation to Campylomyza ; the form of the legs and wings is as in that genus; the wings (Tab. I, fig. 13) have the same short pubescenee and cilia, and the three ocelli are just as distinct. The differences are the following. 1. The vein, which in the second section of Cecidomyide is added to the number of the veins of the first section, is not simple, but forked, in the new genus, and therefore approaches in some measure the genus Anarete; 2. The very thick longitudinal vein is not forked as in Campylomyza, but simple. The new genus cannot be confounded with Anarete, the species of which have a much more slender structure, a very elongated first joint of the tarsi and the third longitudinal vein of the wing bipartite as far as the base. From Lestremia and Ceeidogona it differs in quite a similar manner, and besides by the presence of ocelli, which are wanting in both genera. The antennz are mutilated in the single specimen which I have before me (a male from the District of Columbia), therefore I can say nothing of the number of their joints; their CECIDOMYIA. 179 structure is as in most Campylomyze. The number of the joints of the antenne being of a higher value, among the Gall-gnats, for the distinction of species than for that of genera, since almost every genus comprises species with very different numbers of joints of the antennz, I abstain from giving a name to the species known to me so incompletely; as to the genus, which can never be mis- taken, I propose for it the name of Zritozyga.” II. On the habits of the CectpoMyIpm. The food of the larvee of Cecidomyia is of a vegetable character. A few apparent exceptions will be mentioned below. They furthermore seem to live in preference on “ving plants; neverthe- less several species of the subgenera Hpidosis and Diplosis, have been reared by Mr. Winnertz from decaying wood; Cec. fuscicollis Meig. (?) has been reared by Bouché from decaying bulbs of tulips and hyacinths. (Instances like that of Cec. bécolor Bouché, found in dung during winter, must be received with caution, as the larvee may have gone there for transformation only.) Although the majority of these larvee attack the soft and green parts of plants, some of them live under the bark of trees, in the cones of pines (Ove. strobi Kalt.) or in fungi (Diplosis polyport Wz., Asynapta lugubris Wz., etc.) Again, most of the larve are monophagous, that is, each species lives exclusively on a certain species of plant, or, at least on closely allied plants; Mr. Winnertz remarks that even those found under the bark of trees follow the same rule. Exceptions are Cec. sisymbrit Schr., which, according to Mr. Winnertz, inhabits in May and June a gall on Berberis vulgaris, and from June till No- vember a somewhat different gall on WVasturtium sylvestre (Winn. ], e. p. 209 and 231); Cecid. arcuata Wz., has been found in the pappus of different syngenesists, in decaying wood and fungi. Besides these, there is a class of larve which live as guests or parasites in galls formed by other Cecidomyie (Cec. acrophila Wz. and pavida Wz. live socially in the deformed buds of Fraxinus excelsior ; Diplosis socialis Wz. inhabits the gall of Lasioptera rubi; Dipl. tibialis Wz., has been reared from the same gall with Cec. salicina Schr., ete.); or by Acari (Cee. peregrina Wz., and similar cases, observed by Loew.) Some even live in the society of Aphides. According to Mr. Winnertz the larve of the stib- genus Diplosis principally, share these parasitical habits; even 180 DIPTERA OF NORTH AMERICA. those living under the bark of trees or in fungi are seldom found alone, but for the most part in the society of other larve (Winn. l. c. p. 206). Thus, the larva of a species of Dip/osis has been found in a stem of Sarothrium scoparium, together with larve of Hylesinus aud Apion. Among the larve with an exceptional mode of life, those should be mentioned which live on the surface of the plant, as that, ob- served by Mr. Loew on the leaves of Veronica Beccabunga, or those of Diplosis ceomatis Wz., and D. coniophaga Wz. found on the leaves of a rose-bush overgrown with the fungus Ccoma miniatum, on which they feed. The American species, probably also a Dip- losis, which I have called Cec. glutinosa, and which will be described below, has a similar mode of existence on the surface of hickory leaves. The greater number of larve penetrate inside of the plant, so as to be concealed from view during their development. Their presence is generally indicated on the outside of the plant by some deformation. Every part of the plant, from the root to the flower and the fruit, is liable to such attacks. But each species of Cect- domyta always attacks the same part of the plant, and deforms it in the same way. (Exceptions seem to be rare; Cee. tremule Wz. has been reared from two galls of different shape, both found on the poplar; the insects differed only in size). The deformations thus produced are very numerous, and several unsuccessful attempts have been made to classify them according to the nature of their origin and their shape. At one extreme of the series is the true gall, a vegetable growth of constant and de- finite form, attached to the plant by a very small portion of its surface and not otherwise deforming that part of the plant (of this class are, for instance, the numerous galls, described below, on the leaves of the hickories) ; at the other extreme is the simple defor- mation, folding of a leaf, swelling of a leaf-rib, arrest of the growth of a bud or a stalk, ete. The egg of Cecidomyia is elongated, rounded at both ends, orange-yellow, or whitish. The time within which the larva is hatched is very different, and depends on the state of the weather; in a great heat, the hatching sometimes takes place within a few hours ; generally a few days are required. Mr. Loew supposes, however, that the species having but one yearly generation remain much longer in the state of eggs. CECIDOMYIA. 181 When first hatched, the larva is colorless, transparent, with a translucent green, yellowish or red stomach; later in life it assumes different shades of red (orange, pinkish, cochenille-red) or becomes yellow or whitish; the color of the same species may also some- what change with age. All these larve have the extraordinary number of fourteen joints, thus affording an apparent exception from all other larvee of insects, which, as a general rule, have thirteen joints. The supernumerary fourteenth joint is placed between the head and the first thoracie (stigma-bearing) segment. It may be considered either as a part of the head, or as a prolongation of the first thoracic segment. Number and position of the stigmata are normal; one pair on the first thoracic segment, and eight pairs on the first eight abdominal segments, so that the ninth or last segment bears none. Sometimes the last pair of stigmata is removed from its usual lateral position, more towards the middle of the segment. In one case (Cec. pint Deg. and the American C. pint tnopis) this last pair is placed apparently on the last segment; but this segment is in reality the eighth, the ninth segment being in this larva unusually small and concealed under the eighth. The stigmata are horny, more or less nipple-shaped projections. The skin of most larve appears finely chagreened under a strong magnifying power; in some cases it is perfectly smooth. The dorsal segments of Cec. sarothamni Lw., C. geniste Lw., etc. are uneven; those of C. cracce Lw., © quercus Lw., ©. fuscicollis Bouché, ete. are furnished with bristles or sparse hairs; those of C. entomophila Perris with hairs arranged in regular rows; those of Cecid. pint Degeer, and of two larve which I found in this eountry (Cec. pint tnopis O. S. and Cee. glutinosa, nov. sp.), have rows of fleshy, setiferous caruncles along the back. (It is to be noticed here that both Degeer and Dufour, in describing such larves, mistook the back for the venter, and described these carun- cles as pseudopods. See Deg. Mém. VI, Tab. XXVI, fig. 9—19, and Dufour, Ann. Soc. Ent. de Fr., 1838, p. 293). The last abdominal segment is smooth and rounded, or furnished with two setiferous tubercles (Cec. pint), sometimes uneven and bristly, or excavated, or armed with a pair of horny processes, frequently curved upwards. Dufour saw a larva use these pro- cesses for leaping. The structure of the head and of the organs of the mouth is but imperfectly known. What Mr. Ratzebarg saw (see his paper 182 DIPTERA OF NORTH AMERICA. in Wiegmann’s Archiv, vol. vii. p. 233, with a plate) and what I have found confirmed by my own observations, may be reduced to the following: The horny parts of the head consist of a ring with two processes extended backwards; a soft, fleshy swelling which protrudes through this ring is taken by Ratzeburg for the labium ; two openings in the upper part of the ring emit a pair of two- jointed organs which this author and L. Dufour believed to be palpi, but which I would rather consider as rudimental antenne, especially on account of their position on the upper side of the head. (Laboulbéne and Perris entertained the same view. ) On the under side of the body, at the juncture of the first thoracic segment with the supernumerary (14th) segment, there is a horny, more or less elongated piece, projecting with its anterior part, whereas its posterior end is concealed under the skin of the first thoracie segment, and more or less translucent. This organ, the use or the homology of which is unknown, is peculiar to the larvae of Cecidomyza, and seems to be seldom wanting. (I found under the bark of a tree a full-grown larva which, for its structure I believe to be a Oecidomya, although it showed no trace of this breastbone.) It may be that this organ is used for locomotion, although I hardly would consider it as homologous to the pseudo- pods of the larvee of Chironomus and Ceratopogon. If the sup- plementary (14th) segment be considered as a part of the head, this breastbone might be taken for the mentum, in analogy to the horny mentum of the larve of the 7ipularie. The form of this organ is variable in different species; sometimes it ends anteriorly in two points, with an excavation between them; sometimes in one elongated point; or it is serrated, ete. The remaining part of the under side of the body sometimes shows other organs of locomotion. The larva of Cee. entomophila, according to Perris, has three slender, elongated, pointed, sub- corneous, approximated projections in the middle of every ventral segment. Cec. fuscicollis Bouché (Bouché, Naturg. der Ins. p. 25), has a pair of elongated, pointed pseudopods under each thoracic segment, and three such pseudopods under each abdomi- nal segment. Bouché’s figure of the latter closely resembles Perry’s figure of the pseudopods of Cec, entomophila. The motions of the larve, except those few, living on the surface of the leaves, are generally slow; but those which change their abode befere assuming the pupa state become very active about CECIDOMYIA. 183 that period. Winnertz observed an extraordinary activity in some such larve after a thunder storm; they left their hiding-places un- der ground, and crawled about restlessly for some time; they did the same after every thunder storm, some of them even two months after having left their galls. The larve of several species, for instance, Cec. lot’, Cec. pist, and Cecid, rumicis, have the power of leaping. Mr. Loew remarks that all such larvae belong to the sub-genus Diplosis. Cec. populi Duf. performed its leaps by straining the horny hooks at the tip of its abdomen against the under side of the thoracic segments. (Dufour, Ann. Se. Nat., 2e sér. XVI, p. 257.) “The want of horny organs of mastication,” says Mr. Winnertz, “authorizes the supposition that a lesion of the plant does not take place ; it is much more probable that the larva has the power of producing in the plant some peculiar irritation, which causes an overflow of the sap necessary for its food. How little the larva requires for its support is evident from the circumstance that it attains its full growth and development in a gall just large enough to inclose it, a gall apparently hermetically closed, for the most part with hard walls, which do not show the least sign of internal lesion. It seems even as if a certain amount of moisture alone was sufficient to sustain these larve, especially when a great num- ber of them live socially in the same gall (from ten to fifteen larve in the pea-sized bud of Cardamine pratensis; from fifty to sixty in another kind of gall, ete.). Another proof of the small quan- tity of nourishment required by these larve is, that no excrements are to be found in their place of abode.” “The only exception known to me of this extreme frugality,” says the same author, “are the larve of two species which live on the leaves of the white rose, attacked by the fungus Ocoma minia- tum. These larve not only lick the sap exuding at the bottom of the heaps of spores, but they also greedily consume the spores themselves, and their intestinal canal is always filled with them.” The observation of Vallot (Mém. de Dijon, 1827, p. 95), that a larva of Cecidomyia (C. acarivora) found on the surface of the leaves of Chelidonium feeds by sucking Acart, as yet requires con- firmation. Winnertz saw Cecidomyia-larve living as guests in deformations produced by Acari, greedily lick their hosts, but he \ never found in such galls an empty skin of an Acarus. As to the larve of Cecidomyta inhabiting galls, produced by other species 184 DIPTERA OF NORTH AMERICA. of the same genus, it is a question, according to Winnertz, whether they take the same food with their hosts, or live on their exere- ments. Perris (Mém. de Lille, X, p. 274, with figures) found Cecid. entomophila in an insect-box, living on the exerements of the minute Acar? abounding in such boxes; he compares them, apparently with good reason, with the larve of Cecidomyia found under the bark of trees, among the excrements of the xylophagous _ insects. These larve underwent their transformation in the cor- ners of the box. It is very probable that the larve of Cecidomyta, like most of the dipterous larve, do not undergo several moultings. I do not find any mention about it in the authors. Only Dr. Harris states that C. tritict casts off its skin before going under ground for transformation. Before assuming the pupa state, some larvee of Cecidomyza leave their galls and abscond themselves under ground, underdry leaves - or moss, or under the bark of trees. Other larve, on the contrary, undergo their transformation within their gall.* In both eases the pupe are frequently, although not always, inelosed in a cocoon. Winnertz positively denies that the larve spin this cocoon; ae- cording to his observation, the latter is, so to say, exuded by the larva. He found that larve which had fastened themselves to a leaf, were eneircled within twenty-four hours by a white halo, con- sisting of tiny thread-like particles, which seemed to grow some- what like ecrystal-needles; the larva during this time remained perfectly motionless. The cocoon is perfected within a few days, and even then, under a strong magnifying power, no genuine thread is perceptible. The mode in whieh the pupa state is assamed has been de- scribed by Dr. Harris in a posthumous paper published in the Proceedings of the Boston Soe. of Nat. Hist., 1860, p. 179. “The approaching change is marked by an alteration of the color of the anterior segments of the larva, which (in the ease of Cecid. salicis Fitch) from orange become red and shining, as if distended by blood. Soon afterwards, rudimentary legs, wings, and antennz begin, as it were, to bud and put forth, and rapidly grow to their full pupal dimensions, and thus the transformation to the pupa is * The larva of Ceeid. terminalis Lw., according to Winnertz, varies in its habits. It sometimes goes under ground, and sometimes transforms within the willow leaves deformed by it. CECIDOMYIA. 185 completed.” The peculiarity of this process is, that the transforma- tion is undergone without shedding the larva skin, and, as the same observation has been repeated by Dr. Harris on the larve of C. destructor Say and C. tritict Kirby, it is very probable that it ap- plies to all the larvee of the genus. Ido not find this fact men- tioned in the European authors. Instead of a cocoon, the pupa of Cec. destructor Baya is inclosed in an oblong, brown case, which is nothing but its own hardened pupa-skin. ‘The larva of this insect, says Dr. Harris (/. c.), when it has come to its growth, remains fixed and motionless on the culm of the wheat. Its body contracts and soon takes the form and color of a flax-seed. While this change is going on externally, the body of the insect gradually cleaves from its outer dry and brownish skin, When this is carefully opened, the included insect will be seen to be still in the larva state. It does not change its condition until a few days before it discloses the winged insect,” etc. Cecid. graminicola Kalt. and another Cecidomyia, mentioned by Dr. Fitch as forming an imbricated gall on Agrostis lateriflora, undergo a similar kind of transformation, their pup being inclosed in the dry larva-skin. However different the mode of transformation of Cecid. pint Deg., C. pint maritime Duf., and Cec. pint inopis O. S. may ap- pear, the pupe of which are inclosed within a cocoon of resin, it is in perfect analogy with the preceding instances. The process by which the cocoon is formed is exactly the same as that described above by Dr. Harris. The larva of the American species C. pint tnopis O. 8. observed by me in the environs of Washington, fastens itself to a pine leaf and remains motionless until the resinous sub- stance which it exudes abundantly, begins to harden; the larva then gradually frees itself from the contact of the cocoon-like case thus formed. It is very probable that this eocoon is nothing but the outer larva-skin, saturated with resin. _ The pup of Cecidomyie show a close resemblance to those of the Tipule fungicole, especially those of Sctara. As in the latter genus, the bases of the antenne are often produced in points; these frontal projections are sometimes long, approximated, and resemble horns (Cec, sarothamni, see Winnertz, |. c. Tab. I, f. 6, or Cee, verbasci Dufour, Ann. Sec. Nat., 8¢ sér., Vol. IV, p. 5-24, with figures, 1845); in other cases they are smaller and at some 186 DIPTERA OF NORTH AMERICA. distance from each other (Cee. salicina, C. veronice, etc., see Wz., l. ec. f. 3, 4). Behind these horns, two pairs of bristle-like pro- cesses may be observed in most pupe. The first pair is also on the head, close by the horns, the second on the thorax. Both vary in size and strength in different species: The second, tho- racic pair, has been taken by some authors for a spiracle. These projections and horns, especially the frontal ones, aid the pupa in working its way through the gall or from underground, before entering its last stage of existence. The dorsal segments of the abdomen are, for the same purpose, frequently rough with spines. The tip of the abdomen is sometimes smooth; in other instances it bears a few bristles. After the exclusion of the perfect insect, the pupa-skin remains frequently hanging on the outside of the gall. Some species of Cecidomyia have only one, others more than one yearly generation. The summer generation of the latter kind remain but a short time in the pupa state; the winter generation much longer. The larvee of Lasioptera resemble those of Cectdomyia in their structure as well as in their habits. They frequently have the same reddish color and the peculiar breast-bone. L. rubi Heeger and the N. American ZL. witzs O. S. produce swellings in the stem of the plants which they inhabit. Z. pusilla Heeger forms galls on the leaves of Sonchus, ZL. cerris Kollar on those of the oak ( Quercus cerris). III. On the North American CrectpomMy hitherto observed and their galls, The species of N. A. Cecidomyie at present known, may be distributed into three categories, according to the extent of our knowledge concerning them. About the species of the first cate- gory, nothing but the description of the perfect insect is extant, its habits remaining unknown; as to those of the second category we are acquainted with the first stages of their existence, especially with the deformations they produce, without knowing the perfect insect; finally, to the third category belong those, the habits of which, as well as the perfect insect, are described. The following is a synopsis of the species recorded by previous authors, as well as of those mentioned in this paper:— CECIDOMYIA. 187 I. Perfect insect described, habits unknown. . ornata Say, Long’s Exped. App. p. 357. Wied. Auss. Zw. I, 22, 2. . caliptera Fitch. . cerealis Fitch. . tergata Fitch. . thoracica Fitch. . spongivora Walk. List of Dipt. Brit. Mus. I, 30. Campylomyza scutellata Say, Journ. Acad. Phil. III, 17,1. Wied. Auss. Zw. I, 22, 1. Tritozyga, sp. Lw. (see p. 178). Diplosis maccus Lw. The following note on this new species was furnished by Mr. Loew :— Dr. A. Fitch, Essay on the Wheat-fly, etc. RAQRAN “ Gall-gnats cannot be recognizably described from single dried specimens, unless they are distinguished by some striking peculiar- ities. I feel no temptation at all to describe species which have no such peculiarities, and allow myself an exception only with the following Dzplosis on account of its remarkable beauty. D. maccus Lorw. 4% and 9. (Tab. I, figs. 11 and 12.)—Flavida, thorace fusco-vittato, antennarum articulis nigris et pallidis alternanti- bus, alis violaceo-maculatis, tibiis tarsisque nigro-annulatis. Yellowish, thorax with fuscescent stripes ; the joints of the antenne alter- nately black and whitish; wings with violet-blue spots; tibie and tarsi annulated with black. Long. corp. 0.08. Long. al. 0.11. Yellowish; the joints of the antenne alternately black and yellowish-white, the simple joints being black, the double joints yellowish-white ; also the hairs of the black joints are black, and those of the light ones light. Thorax with three brown longitu- dinal stripes coalescing anteriorly, the intermediate one reaching only to the middle of the thorax, the lateral ones running as far as its posterior margin. Abdomen without dark bands. Coxe yel- lowish. Fore and middle femora black on the upper side and tips, the outermost extremity of the tip being yellowish; hind femora with a black line not reaching far beyond the middle, and with the tips black. Tibie black; anterior ones with a very broad yellowish ring beyond the middle, the hind ones with such a ring at their base and a second ring beyond the middle. Anterior tarsi black on the first, short joint, at the base of the second and at the tips of the second, third and fourth joints; the hind tarsi have the same markings with the exception of the base of the second 188 DIPTERA OF NORTH AMERICA. joint, which is not black. Poisers yellowish, the base of the knob blackish. Wings yellowish, appearing almost golden yellow in an oblique direction, with bright spots of a violet reflection. Before the second longitudinal vein there are two such spots, the first immediately beyond the tip of the first longitudinal vein, the second between the first and the tip of the second longitudinal vein. Between the second and third longitudinal veins there are three violet spots, the first of which is the largest; it is situated under the first costal spot and runs far towards the base of the wing in the form of a wedge without sharp limitation; the second is the smallest, and is placed below the yellowish space between the two costal spots; the third is a double spot almost S shaped, and united to the second costal spot with its anterior end. Behind the third longitudinal vein the violet color prevails to such an extent as to leave only two golden spots, one of which is placed behind the anterior branch and the other immediately behind the posterior branch of the third longitudinal vein. The cilia of the wings are quite pale yellowish, but blackish where the violet spots reach the margin of the wing. Hab. Washington. (Osten-Sacken.) This species resembles very much the European Diplosis pavo- nina Loew, but is easily distinguished from it by the smaller ex- tent of the violet color of the wings, the smaller extent of the black color of the legs, and the sharper limitation of both colors. Whether the male of Diplosis pavonina has likewise the joints of the anteune alternately dark-colored I do not know, as I did not succeed in discovering it; judging, however, by the appearance of the antennz of the female, this does not seem to be the case.” - II. Galls or larve known, perfect inseet unknown. (The descrip- tion of these galls and larve is given below, under the indi- cated numbers. ) On hickories, Carya, of different kinds, seven species, besides one belonging to the third category. (Nos. 1—8.) On the golden-rod, Solidago, of different kinds, two species, besides other two belonging to the third category. (Nos. 9—12.) On Vaccinium (or Gaylussacia ?), one species. (No. 13.) On the scrub pine (Pinus inops), two species. (Nos. 14 and 15.) On the red maple (Acer rubrum), one species. (No. 17.) On the ash (Frazxinus americana), one species. (No. 18.) On the oaks of different kinds (Quercus), four species. (Nos. 19—22.) CECIDOMYIA. 189 On the wild grape (Vitis), one species (No. 24), besides another belonging to the third category. On the hornbeam (Carpinus americana) one species. (No. 25.) On the tulip-tree (Liriodendron tulipiferum), two species. (Nos. 26 and 27.) On the willow (Salix), one species (No. 28), besides one belonging to the third category. On Impatiens fulva, one species. (No. 30.) On the blackberry (Rubus villosus), one species. (No. 31.) On Agrostis lateriflora (?), one species. (No. 32.) III. Perfect insect described, and its habits known. On the cereals (wheat, rye, etc.). { About the habits of these well-known insects, see C. destructor Say. Dr. Harris’s Treatise, etc., and Dr. Fitch’s papers: C. tritici Kirby. | The Hessian Fly (Trans. N. Y. State Agric. Soc., l vol. VI), and The Wheat Fly (ibid. vol. V). C. culmicola Morris. See Dr. Harris’s Treatise, p. 465. On the locust (Robinia pseudoacacia). C. robinie Hald. Amer. Journ. Agric. and Se., vol. VI, 193. Harris, Treatise, etc., p. 452. (Haldeman’s paper is also reproduced in the Proc. Boston Soc. of Nat. Hist., vol. VI, January, 1859.) The larva’ lives upon the leaves, the margins of which it deforms into a roll. It is evident, from Mr. H.’s description of the perfect insect, that it belongs to the sub-genus Diplosis. (See also Fitch, Reports, vol. II, No. 332.) 4 C. pseudoacaciz Fitch, Reports, vol. II, No, 331. The larve injure the tender young leaflets near the tip of the stem, causing them to be folded like a little pod (in July and August). They transform under ground. On the gooseberry (Ribes uva crispa). C. grossulariz Fitch, Reports, vol. I, p. 176, and vol. II, No. 150. The berries turning red prematurely and becoming putrid, contain the bright yellow larve. Dr. Loew thinks that the perfect insect be- longs to the sub-genus Asphondylia. (See p. 7.) On the willow (Salix rigida and S. lucida). C. salicis Fitch, Am. Quart. Journ. Agric. and Science, vol. I, p. 263. (See also Dr. Harris’s paper in Proc. Bost. Soc. Nat. Hist., vol. VII, January, 1860.) The gall is a woody tumor, surrounded by the dry and brittle terminal bud, at the tips of the twigs. It contains but a single larva. The name of the species must be changed, as there is already a European C. salicis. I propose to callit C. rigid. On the alder (Alnus serrulata). C. serrulate O. S. (See below, No. 16.) On the hickory (Carya). Diplosis carye O. 8. (See No. 1.) On the wild grape. 190 DIPTERA OF NORTH AMERICA. Lasioptera vitisO. 8. (See No. 23.) On the golden rod (Solidago). C. solidaginis Lw. (See No. 9.) C. hirtipes O. S. (See No. 10.) On Chrysopsis mariana. C. chrysopsidis Lw. (See No. 29.) In comparing this list with similar enumerations existing for European Cecidomyie, but few cases of analogy will be found. Such cases are, for instance, the habits of C. pint inopis, nov. sp., which correspond exactly to the European C. pint Degeer ; the gall of ©. strobiloides, nov. sp, on the willow, which is repre- sented in Europe by @. strobilana Bremi; the analogy between the gall on Fraxinus americana (No. 18) and that of C. botularta Wz. of the European ash, is more doubtful; likewise that between the deformation of O. erubescens, nov. sp. (No. 20) on the oak leaves, and a similar deformation described by Mr. Loew (C. quereus Lw.) Two galls occur on the American wild grape, whereas none has been discovered on the European grape; likewise, although eight galls are already known to occur on the hickory (Carya), none is recorded as belonging to the European walnut (/uglans). Al- though galls have been found on the European maple, alder, and blackberry, they are different from those recorded below on the American species of these trees and shrubs. obinia, Lirtoden- dron, and in some degree Solidago, being peculiar to America, their galls could not, of course, be expected to be found in Europe. I will proceed now to give a condensed description of the ob- servations which I had occasion to make on Cecidomyie during my residence in this country. These observations were made in the environs of Washington, unless otherwise mentioned. I have followed a practice adopted in Hurope, in giving names to species known only on account of the deformations they produce, the per- fect insect not having as yet been reared. This affords the advan- tage of being able to designate each described gall by a fixed name. In order, however, to distinguish such species from those the gall-fly of which has been reared and described, the first are simply put down as new species (n. sp.), whereas the names of the authors have been mentioned after the specific names of the latter (Lw. or O. S.) CECIDOMYIA. 191 1-8. On hickories (Carya) of different kinds. The numerous galls of Cecidomye occurring on the hickory are found indifferently on the various species of this tree. I have noticed also that whenever a spot is found where one of the galls occurs in abundance, some of the other kinds are sure to be found. Thus the galls of Cee. holotricha and those of Diplosis carye, or those of the latter with the galls of Cec. tubicola are frequently met with on the same leaflet. These galls may be distributed as follows (the numbers from I to 8 corresponding to those of the descriptions given below): A. True galls, fastened to the under side of the leaf and breaking off easily. a. Bare. 1. Subglobular, with a small nipple at the tip, diam. 0.05 to 0.1. 2. Elongated onion shaped, a little larger than the preceding. 3. Conical, contracted at base, blood red or purplish. 4, Cylindrical, erect, inserted in a cylindrical socket. 6. Pubes- cent. 5. Subglobular, with a nipple at tip (or short onion shaped), pubescent with ferruginous. 6. Subglobular, without nipple at tip, finely downy. B. Other deformations. 7. Swelling of the midrib at the base of the leaf. 8. Yellow spots on the leaves; larva living on the leaf, not within it. 1. Diplosis carye O. 8. Gall subglobular, smooth, seedlike, 0.05 to 0.1 in diameter, with a small nipple at the tip. In sum- mer they are yellowish-green and their shell is soft; in winter they become brownish, and the shell, although thin, is hard and woody. They begin to growin June. I gathered them in October, when the larva was full grown. Each gall contains a single larva; it is white, and stouter in proportion to its length than most larvae of Cecidomyia. The breast-bone has two sharp points anteriorly, with an excavation between them; the tip of the last abdominal segment has no horny processes. It undergoes the transformation within the gall. The pupa resembles, by the structure of its head, that of C. sarothamnt Wz., figured by Mr. Winnertz in his monograph (J. e. tab. I, f. 6); namely, the pointed projections at the basis of the antenne are closely approximated and not remote, as in other species. After having kept these galls on moist sand all winter, I ob- tained the flyin April. (Description drawn from a fresh specimen. ) BD. caryeO.8. ¢ and ?.—Antenne pale; ¢ 26-jointed; alternate joints a little larger than the intermediate ones; verticils 192 DIPTERA OF NORTH AMERICA. moderate; pedicels between the joints rather short; ? 14-jointed, joints subsessile; front and mouth pale; collare with a blackish edge posteriorly, ending on both sides in a short, black streak on the pleure; thorax pale, with three broad, almost contiguous blackish or grayish stripes; the intermediate one is subcuneiform and slightly capillary towards its posterior end, which, for this reason, appears slightly bifid; it does not reach the scutellum; the. lateral ones are rounded anteriorly, narrowed posteriorly, and end just before the scutellum in a short, black streak, communicating with a brown triangle on the side of the scutellum, so that the latter, being pale itself, is inclosed on both sides by the black streaks and the brown triangles; a couple of black dots are visible on the pleure ; a pale brown spot on the pectus, between the first and the second pair of cox; a brown spot at the basis of the halteres, which are pale; abdomen reddish, hardly darker laterally, and with a tuft of hair on each side, near the posterior margins of the segments; legs pale, with a minute, appressed black pubes- cence, which makes them appear blackish; wings immaculate; the second longitudinal vein joins the costal at the apex of the wing or immediately beyond it; cross-vein indistinct or none. 2. C. caryecola, n. sp. Gall somewhat larger than the preced- ing, elongated onion-shaped, with the tip prolonged in a point, pale green. Found through the summer either in separate clusters, or mixed with other galls, for instance that of C. holotricha. 3. C. sanguinolenta, n. sp. Gall conical, narrowed at the basis, blood red or purplish, about 0.15 high and 0.12 broad. I found them for the first time about the middle of July. At this time they were solid inside, except a narrow hollow near the basis which contained the small, somewhat yellowish larva, with a distinct, pointed, spear-shaped breast bone. These galls occur in nume- rous clusters on the same leaflet. 4. C. tubicola, n. sp. Gall narrow-cylindrical, erect, about 0.15 or more long. They break off easily, being inserted in a small protuberance on the leaf, with a sharp-edged socket in the centre, in which the cylinder fits exactly. Their color, when ripe, is more or less brownish, pale greenish at base. They are hollow inside and contain in October a whitish larva with a breast bone ending anteriorly in a single, elongated point. They generally occur in clusters. Some of these galls are found covered with a viscous fluid. CECIDOMYIA. 193 Early in summer I frequently found a gall of the same form, but smaller, generally reddish at the tip and easily distinguished by the absence of the basal piece in which the other is inserted; it is simply fastened to the leaf by a minute pedicel. Besides, it occurs ‘always singly, frequently on the edges of the leaves, whereas the other gall is for the most part found in clusters. Is it the same species ? 5. C. holotricha, n. sp. Subglobular, pubescent, onion-shaped galls. Diam. up to 0.1 or a little more. They resemble the galls of D. carye in shape, but are somewhat larger and covered with a pubescence which is pale when the gall is young and growing, and becomes rust-colored in the stage of ripeness. I have observed two modes of occurrence of these galls ; either they are scattered in numbers, as many as a hundred on the same leaflet, or they grow in a row along the mid-rib of the leaflet ; in the latter case they are generally larger, and being packed close together, assume an irregular shape. It is very probable that these two forms belong to two different species, and in this case I would retain the above name to the first form. Galls of the first form begin to grow in June; in September and October I found the white larva apparently full grown. The breast-bone has one elon- gated point anteriorly and two projections on both sides, about the middle. At the same time I find in my diary that in some of these galls (it is not distinctly stated which), I had found a pale orange, apparently full grown larva, with the breast-bone ending anteriorly in two triangular points with a rectangular excision between them. 6. C. persicoides, n. sp. Gall round, 0.1 to 0.2 in diameter, smooth, without nipple-shaped tip, yellowish or red, clothed with a delicate down like that of peach, and looking somewhat like a diminutive fruit of this kind. I found these galls more seldom than the others. 7. OC. cynipsea, n. sp. Rounded, irregular, hard swelling on the under side of the hickory-leaf, on the midrib, near the base of the leaf, about half an inch long. When I found it (in July) it was pale yellowish, and contained, in several small hollows, minute whitish larvee, with a breast-bone narrowed anteriorly and ending in a point. 8. C. glutinosa, n. sp. The small yellowish-orange larva forms no gall, but lives in the open air on the under-side of the leaf, to which it is attached by a viscous substance probably secreted by 13 194 DIPTERA OF NORTH AMERICA. the leaf. The presence of the larva is indicated on the other side of the leaf by a round yellow spot. The structure of the larva ig peculiar: it has rows of fleshy, pointed tubercles along its back, like the larva of C. pint tnopis (described below), with which it agrees in some respects in its habit of fastening itself to the sur- face of the leaf by means of a viscous substance. 9. C. solidaginis Lw. Gall on Solidago produced by the arrest of the growth of the stalk, which causes the leaves to accumulate round the same spot and thus to produce a large imbricated de- formation. It begins to appear already in July, but the flies escape only late in the fall. The following description of gall and fly have been prepared by Mr. Loew :— “The gall (Tab. I, fig..8) represents a globular head of the size of 14 to 2 inches formed by hundreds of leaves, the exterior ones being only little altered, the interior ones becoming more and more narrow; on a closer examination we easily perceive that this structure results from the coalescence of several deformations at the tips of abortive twigs; in a specimen which I dissected I counted five such shortened twigs. At the top of each twig there is a single gall, without compartment, somewhat of the shape of a very small seed, and having in its interior a cavity widened a little underneath. he tip of one of them (Tab. I, fig. 10) showed at its end three small convergent lobes, giving it the appearance of being produced by three coalescent leaves. I could not discover this structure in the others; I found only a rounded, rather irre- gular opening at the tip. The insect which produces this defor- mation likewise belongs to the genus Cecidomyza in the restricted sense. C. solidaginmis Lozrw. % and 9. (Tab. I, fig. 4—7.)—Fusca, ab- domine fasciis rufis et nigris picto; antennarum flagellum in mare arti- culis 20 vel 21, in foemina circiter 18; ale pilose, nigricantes, venula transversa nulla; terebra foeminze modice elongata. Fuscous, abdomen with black and red bands; flagellum of the antennz with .20 or 21 joints in the male, with about 18 in the female; wings hairy, blackish, without transverse veinlet; borer of the female mode- rately long. Long. corp. % 0.16, 9 0.17. Long. al. % and 9 0.16— 0.17. Thorax with the pleure sometimes brown, sometimes dark fus- gous, with black hairs. Abdomen of the female with distinct CECIDOMYIA. 195 black and red transverse bands, the latter less distinct in the male; hairs of the abdomen blackish with a lighter reflection. Antenne of the male with 20 or 21 brown flagellar joints with rather long peduncles, the uppermost being much smaller than the preceding; the verticillate hairs very long and rather light. The female has generally some flagellar joints less, and its joints are round, with shorter hairs and without any peduncle. The female ovipositor has a very moderate length and is little pointed. Legs of the female black without white reflection. Legs of the male much longer and more slender than those of the female; hind tibie and tarsi everywhere with a white reflection, which, on the fore and middle tibie and tarsi, is chiefly seen on the under side. Poisers black. Wings blackish on account of their close and long hairs; between the first and second longitudinal veins no transverse vein is visible; the second longitudinal vein towards its end is very little curved exteriorly ; the anterior branch of the third longitudinal vein is distinct and nearly straight.” (Descrip- tion drawn from dry specimens. ) 10. ©. hirtipes O. 8. Rounded gall at the tip of stunted stalks of Solidago, sometimes nearly an inch in diameter, smooth, brown- ish on the outside, solid inside, containing several larve in different compartments. I found them in August, and obtained the fly on the 17th of September. C. hirtipes 0. 8. ?.—Antenne reddish-black, 22-jointed, joints short, subcylindrical, almost subglobular, gradually decreasing in size towards the tip, separated by pedicels which are shorter than the joints, verticillate-pilose ; head dark reddish with black hairs on the vertex; eyes contiguous on the front; thorax blood-red, its back blackish, the usual three stripes being almost coalescent and separated by rows of erect black hairs; collare blackish above ; pleuree blood-red, with indistinct black dots; scutellum and meta- thorax red, the first with black hairs; halteres reddish at base, the club deep black ; abdomen red, upper side of the segments with a blackish, apressed, rather sparse pubescence; cox reddish, feet deep black; wings with a dense, blackish pubescence; costa black, especially along its middle portion; second longitudinal vein reaches the margin at or close by the tip of the wing ; cross-vein indistinct. (Description drawn from a fresh specimen. ) ll. CO. carbonifera, n. sp. Pale, circular spots, surrounded by 196 DIPTERA OF NORTH AMERICA. a purplish-black ring, on the leaves of Solidago; under each spot, inside of the leaf, several larvee. I found them commonly in Au- gust, and observed that the hollow space within the leaf was fre- quently filled with a hard, black substance, not unlike charcoal. 12. C. racemicola, n. sp. Bud-shaped gall among the racemes of Solidago. It has about 0.1 in diameter, is green, and looks exactly like a bud, but is easily distinguished from the buds of Solidago by its stout, rounded form. Each gall contains a single reddish larva. Not rare in September. 13. C. vaceinit, n. sp. Gall on the leaf of Vaccinium (or Gay- lussacia ?), in the shape of a cock’s comb. I found near Wash- ington, in October, one single leaf with two galls of this kind, arising from the central rib. The largest of the galls was about 0.15 high and 0.2 broad about the middle. They were green, and resembled pretty much a cock’s comb, or, still better, an oyster, fastened by its hinge. After having been kept for some time on moist sand, both burst open exactly like the valves of a shell, and a reddish Jarva escaped from each. Both wandered for some days in the bottle in which I kept them, and inclosed themselves after- wards in delicate semitransparent cocoons, formed above the sur- face of the sand, between some chips of paper which I had provided for them. Unfortunately, both died without undergoing their final transformation. 14. C. pint tnopis, n. sp. Resinous cocoon on the leaves of the scrub pine (Pinus inops). Similar cocoons have been observed on the European pine, and described a century ago by Degeer. Ratzeburg, in his Yorst-Insecten, describes and figures the same cocoon, as well as the larva and the perfect insect, C. pint Deg.* Dufour (in the Ann. Soc. Entomol. de France, 1838, p. 293) gives an account of a Cecidomyia with precisely similar habits, which he observed on the South European pine (Pinus maritima), and which he called C. pint maritime. The larva producing these cocoons is remarkable for two rows of oblong, pointed, fleshy protuberances along its back, and a similar row on each side. (See Ratzeburg, Forst-Insecten, III, Tab. x, f. 14, L.) Early in April I saw some of these larve emerge from a small hollow between two terminal’ buds, where they had probably spent the winter, and crawl along the leaves, * See the same figures of cocoon and larva in Wiegm. Archiv, ete., vol. VII, p. 233. CECIDOMYIA. 197 aided in this by a resinous substance which they exuded abund- antly. ~ Having reached a certain height on the leaf, they stop and remain quiet till the resinous substance covering them becomes hard and assumes the shape of an oblong, whitish, semi-transparent cocoon. ‘Then the larva may be seen moving to and fro inside of this cocoon. I did not succeed to rear the fly from the cocoons which I brought home, and when I returned to the same spot in the woods about a month later, the cocoons were already empty. According to Ratzeburg’s statement the European species spends the winter in the cocoon. The American species, as just shown, forms its cocoon only in the spring. As, nevertheless, it may be identical, or at least closely allied to C. pint Degeer, I subjoin here the description of the latter, translated from Mr. Winnertz’s mo- nograph. (Compare also Ratzeb. |. ¢. III, p. 159.) CO. (Diplosis) pint Degeer. gg Antenne somewhat longer than the body, brown, basal joints yellow, verticils snow-white ; joints strong, stout, on short pedicels, double joints three times as long as the pedicel, the last joint with a very small, nipple-shaped pro- jection; hypostoma and front pale reddish or brown; palpi reddish- yellow; thorax brownish-black or black, with two rows of white hairs from the collare to the scutellum, and one row from the shoul- der to the origin of the wing; pectus blackish; pleure reddish- brown; halteres white; abdomen reddish-brown, with white hair, forceps blackish; feet brown with white articulations, under side silvery-white ; posterior feet with a silvery-white reflection when viewed in a certain light; wings milky white, with a white pubes- cence, the costal and the two first longitudinal veins brown, the third longitudinal vein pale; transverse vein pale, but distinct, very oblique, situated a very short distance beyond the middle of the first longitudinal vein; third longitudinal vein straight, turning towards the posterior margin in an obtuse, rounded angle; the second longitudinal meets the costal immediately beyond the tip of the wing. 2 Antenne a little more than half as long as the body, brown with gray verticils, basal joints yellow; joints of the flagellum about five times as long as the pedicel, last joint ending in a small bud-sbaped appendage; hypostoma reddish-yellow; front reddish- brown; palpi and thorax as in ¢; halteres brown; abdomen red- dish-brown, with short whitish hairs, more dense and with a silvery reflection laterally ; ovipositor short, yellow, with two small oval 198 DIPTERA OF NORTH AMERICA. lamels; femora and tibize and the anterior pair of tarsi superiorly black or black-brown ; inferiorly white with a silvery reflection ; the posterior tarsi have the two basal joints black or black-brown superiorly, silvery white inferiorly; the three last joints are silvery white, sometimes with blackish articulations; wings gray, irides- cent with a dense, blackish-brown pubescence and brown veins; cross-vein distinct, very oblique, situated a little before the middle of the first longitudinal vein; second longitudinal as in %, the third likewise, although almost perpendicular to the posterior mar- gin. Length ¢ ? 0.1 to 0.15. 15. C. brachynteroides, n. sp. Swelling at the basis of the leaves of the scrub pine (Pinus enops). In consequence of this swelling the pairy leaves diverge, their bases coalesce, and the sheath at the basis of the bunch bursts. In July these swellings contain several small reddish larve; in winter I found them empty, but having observed some larve hanging on cobwebs near these galls, I conclude that they undergo their transformation under ground, and were caught in these cobwebs in the attempt to leave the gall. The habits of this Cecidomyia seem to be very like those of C. brachyntera Schwiigr. living at the base of the pairy leaves of the European Pinus sylvestris. Still, the latter produces no gall or swelling whatever, and causes the leaves only to wither; it also goes under ground for transformation. (See Ratzeburg, Forst-In- secten, Vol. III, p. 160.) 16. C. serrulate O. 8. Deformed terminal buds of the common alder (Alnus serrulata). The buds appear enlarged, rounded, pointed at the tip, having from three to five lines in diameter. In autumn they are greenish ; in winter withered, brown, and frequently covered with a whitish efflorescence. Each gall contained in October from two to six red- dish larvee, lodged in the same compartment. In winter the galls are found empty, as the larve go under ground. By keeping some of these galls, gathered in October, on moist earth, I obtained the fly in the following April. It belongs to the sub-genus Cecidomyia Loew. ‘The description has been drawn from fresh specimens. C. serrulate 0, 8. J and ?.—Head and antenne brownish; mouth and palpi paler; antennz 18-jointed in both sexes ; joints verticillate and on moderately long pedicels (); subcylindrical, subsessile (2); thorax blackish superiorly, the usual three stripes - Ce CECIDOMYIA. 199 being coalescent; their intervals are indicated only by longitudinal crests of erect hairs; a reddish spot before the scutellum; the lat- ter brownish with two black streaks at the basis; sternum brown- ish; the rest of the thorax, as well as the abdomen, are of a bright red, especially in the 2, where this red color is more apparent, the abdomen being so much more distended; dorsal segments of the abdomen brown (which color is produced by numerous and exceed- ingly minute scales, appressed to the body); stem of halteres pale, knob obscurer ; basal half of femora pale; their apical half, tibia and tarsi brownish; wings margined with a brown pubescence anteriorly and round the apex, especially in the 2; cross-vein not apparent; the second longitudinal vein reaches the margin a short distance before the apex. 17. C. ocellaris, n. sp. Ocelliform, red spots on the leaves of the red maple (Acer rubrum). They have about 0.3 in diameter ; the margin is bright cherry red, and there is a round patch of the same kind in the centre. The interval between them is pale. They appear brighter on the upper side of the leaf; on the under side in the centre is a small depression occupied by a small, transpa- rent, colorless larva. JI found them in this state at the beginning of June. Later in the season I observed that the spots had lost their fresh color, and that the larva had disappeared ; I suppose it drops to the ground to undergo its transformation. 18. C. pellex,n. sp. Rounded oblong, succulent, subpellucid galls on the ribs of the leaves of the ash (Fraxinus americana). Diameter, 0.15 to 0.2. They are pale green, and the more ripe ones are slightly colored with brownish. The principal convexity is on the upper side of the leaf; on the under side the leaf-rib appears swollen, pale green in the middle, and whitish on both sides. Each gall contains a whitish larva; some of these galls were double. There were one or more (as many as six) galls on the same leaf. Towards the end of June I found many of these galls shrivelled and dry, and suppose therefore that the larve had gone under ground. A gall apparently similar to this has been discovered on the European ash, and described by Bremi and Winnertz. 19. C. niveipila, n. sp. Deformation of oak leaves, consisting of a large fold with a white pubescence on the inside. It begins very early in the spring on the young leaves of the white oak and other kinds of oak. The egg is probably deposited on the upper 200 DIPTERA OF NORTH AMERICA. surface of the leaf, on one of the ribs. The irritation caused by the larva produces a fold or cavity in the leaf, lined inside with a white pubescence. The under side of the leaf shows on the cor- responding spot the swollen rib, which is pale green, bordered on both sides by the same white pubescence. The galls, according to their size, contain more or less larve, sometimes ten or more. When this deformation is very large, it involves the whole leaf, which is folded in two along the midrib, the under side forming the outside of the fold, and showing the swollen ribs with the white pubescence in their intervals. On the 25th of May I found some of the galls considerably grown, thick, and swollen; their pubescence was of the brightest white; the larve they contained were also grown, plump, white. Other galls, on the contrary, had grown but little, and appeared sickly or withered. They contained no larvee at all, or their inmates appeared yellowish and sickly. I suppose that some of them were attacked by parasites, as I found a minute hymenopterous larva fastened to the skin of one. In June some of the galls which I brought home were abandoned by their inmates, which went under ground for transformation, but perished soon afterwards. The larva of this gall is white, and has two small horny pro- cesses, directed upwards, at the anal end of the body; its breast bone is truncated, heart-shaped anteriorly. 20. O. erubescens, n. sp. Folded margin of an oak leaf, tinged with red. This deformation seems to resemble that of C. quercus Ly. on the European oaks. Occurs in the spring. 21. ©. symmetrica, n. sp. Hard red gall on the leaves of dif- ferent kinds of oak, small and round (between 0.05 and 0.1 in diameter) when single, but more commonly assuming an irregular shape by the coalescence of a number of them. I find them chiefly and in large numbers on leaves of Quercus falcata in autumn. They sometimes invade almost the whole sur- face of the leaf, and have exactly the same size and shape on both its sides. The single round galls contain one larva, the compound ones a number of them, depending on the size of the gall, but each in its own compartment. ‘The red substance of the crust shows many cracks, when the gall is ripe, and is easily detached. Under it is a harder, almost woody, yellowish substance. When the dry leaves with such galls fall to the ground, the red part of the crust generally crumbles away in part, partly it is found erect, forming CECIDOMYIA. 201 a jagged fence round the gall. Such galls are generally empty, the larve having perhaps gone under ground, although one of the specimens which I brought home was inclosed in a delicate cocoon inside of the gall. The larva is reddish, and has the usual breast-bone with a deep excision in the middle anteriorly ; the two lobes thus formed are rounded. These galls, as I remarked before, protrude symmetrically on both sides of the leaf. On other kinds of oak, especially the quer- citron oak (Q. ténctoria), I found similar galls, but on the upper side of the leaf only, without the corresponding excrescence on the under side. Those I brought home were abandoned by their larve, which went under ground. Thus I am very uncertain about the identity of both galls, as well as about the habits of the insects. As all these galls were found with larvee late in autumn, it is evi- dent that the fly escapes very early in the spring. 22. C. poculum,n. sp. The so-called oak spangles (Fitch, Rep., vol. II, No. 40), small, circular, somewhat saucer-shaped scales, from 0.1 to 0.2 in diameter, reddish or purplish, covered with a white efflorescence, attached to the leaf by a short pedicel, common in autumn on different kinds of oaks, are generally found empty. In the beginning of August I found a similar gall, yet succulent and greenish, on the post oak (Q. obtusiloba), and inside of it a small whitish larva having all the appearance of the larva of a Cecidomyia, although, on account of its minuteness, I did not sue- ceed in discovering the breast-bone. Dr. Fitch is in error when he states that these galls are “ per- fectly the same” as those noticed by Westwood, Introd., II, p. 130. The European galls of this kind are pilose externally, as stated by Westwood and figured by Réaumur (Mém., vol. III, Tab. XL, f. 13); the American ones, at least those which came under my notice, are smooth. 238. Lasioptera vitis O. 8. Swelling of the stem and leafstalks of the wild grape. This irregular succulent swelling, which be- comes red on its stouter and riper portions, extends not only along the stem and leafstalks, but also invades the leaf-ribs. It contains round hollows of about 0.1 in diameter with an orange-yellow larva in each. Some of the hollows are often abandoned by their inmates and invaded by numerous Zhrips. Having brought this 202 DIPTERA OF NORTH AMERICA. gall home, I noticed that the larvee went under ground and ob- tained the fly on the 29th of June. L. vitis O. S.—0.04 long, pale reddish, head blackish, antennz black, apparently 23-jointed, filiform, joints broader than long, sessile, with a short pubescence (they answer exactly Winnertz’s figure of the antenna of Z. rubi Wz., U..c. Tab. IV, f. 14), two basal joints yellow, thorax blackish above, with a golden pubes- cence near the collare and down to the origin of the wings; scu- tellum pale reddish, abdomen covered superiorly, on each segment, with rows of blackish scales; legs pale reddish, wings with gray pubescence, anterior margin with a black fringe of hairs. 24. C. viticola, n. sp. Elongated, conical, red galls, 0.25 to 0.3 long; on the upper side of the leaves of the grape. On the 16th of July, when I found them, they contained pale orange larve, the breast bone of which had two points anteriorly, with several small indentations between them. The tip of the body ended in two curved, horny points, directed upwards. 25. Cecid. pudibunda, n. sp. Fold on the leaf of the hornbeam ( Carpinus americana), tinged with red on the outside. It is gen- erally situated between two of the side ribs, and runs, therefore, obliquely towards the central rib. Inside of this fold I found, on the 15th of June, exceedingly small whitish larvee; when magnified they appeared semi-transparent, with an orange spot about the middle of the body, and with numerous short, erect bristles ; the head is distinct, as well as two short antenne; although I did not perceive the breast-bone, I have no doubt, from the appearance of these larvee, that they belong to this genus. 26. © liriodendri, n. sp. Brown spots with a yellow or green- ish aureole on the leaves of the tulip-tree (Lirzodendron tulipifera). These spots, about 0.2 or 0.3 in diameter, indicate the presence, inside of the leaf, of a leaf-mining larva of Cecidomyia. It is about one line long, orange, the exserted portion of the breast bone is truncated heart-shaped ; the tip of the body has two short, horny points, directed upwards. (Similar spots on the same tree are produced by a Jepidopterous larva. ) 27. CO. tulipifere, n. sp. Swelling of the midrib of the leaf of the tulip-tree. One of these swellings, which I found on the 27th of July, contained several pale orange larvae of Cecidomyta. They had two short, erect, horny points at the end of the body; CECIDOMYIA. 203 the protruding portion of the breast-bone consisted of two trian- gular projections with a triangular excision between them. 28. C. strobiloides, n. sp. Terminal buds of the willow (the species is not known to me) deformed in the shape of the cone of a pine. This deformation, communicated to me by Mr. Rob. Kennicott, who found them abundantly in northern Illinois, is an inch or more long and contains several reddish larvee under each scale, so that the total number of the larve in one gall is very considerable. A precisely similar gall has been observed by Mr. Bremi on one of the European willows, and is figured in his mono- graph (Denkschr. d. Schweitz. Ges. fiir Nafurk., Vol. VIII, tab. II) under the name of Cee. strobilana. The perfect insect like- wise remained unknown to him. 29. OC. chrysopsidis Lw. The gall (Tab. I, f. 1) occurs in Sep- tember on Chrysopsis mariana and was.communicated to me by Prof. Schaeffer in Washington. Gall and fly are described by Mr. Loew as follows :— “The gall consists of a woollen knob of nearly the form and size of a very small walnut. On the sides there are single pro- jecting leaves, which appear to have undergone no deformation ; at the upper end the leaves of the extremity of the shoot seem to be a little shortened. On removing the rather long hairs of the knob, the interior may be observed to consist of a very great num- ber of single galls, which have no compartments, and coalesce here and there. Each of these galls has an obconical form, unless modified in consequence of its coalescence with the neighboring ones; and it is covered exteriorly with hairs growing longer to- wards the upper end, and resembling the pubescence on the stem and leaves of the plant. In its interior there is a cylindrical smooth cavity, which the perfect insect leaves through a small round opening of the upper end. This opening apparently does not exist during the larva-state of the insect, since together with galls which were furnished with it, and had been abandoned by the perfect insects, I found some which had no opening and con- tained the imagos dead. “The small Gall-gnat which produces this deformation belongs to the genus Cecidomyia in the restricted sense, and may be called Cecidomyia chrysopsidis.” 204 DIPTERA OF NORTH AMERICA. C. chrysopsidis Lorew. % and 9. (Tab. I, figs. 2 and 3.)—Rufa, thorace fuscano, antennarum in mare articulis 17, in femina 15; ale pilose, cineree, venula transversa nulla; terebra foemine longissima. Red, thorax fuscous ; flagellum of the antenne 17-jointed in the male, 15- jointed in the female; wings hairy, cinereous; no transverse veinlet; the borer of the female very long. Long. corp. % 0.1, 9 0.14. Long. al. % and ? 0.13. Red, ou the upper part of the thorax fuscous, with very short hairs. Pleurz with brown spots. Abdomen with indistinct brown bands. The hairs of the abdomen very short, appearing light- colored. Antenne of the male with seventeen (the right-hand side antenna of one specimen with eighteen) joints of the flagellum; joints on moderately long peduncles; the two last are usually welded together; the verticillate hairs on them are very long and rather light. The female generally has two flagellar joints less, and they are rounder, with shorter hairs and without any pedun- cle. Legs dark fuscous, in some directions with a bright sericeous reflection; tips of the knees whitish. Poisers very pale, with the knob almost whitish. Wings rather dark gray on account of their close pubescence; between the first and second longitudinal veins no transverse vein is apparent; the second longitudinal vein, towards its end, is very little arcuated exteriorly. The anterior branch of the third longitudinal vein is rather indistinct.” (De- scription drawn from dry specimens. ) 30. C. impatientis, n. sp. Succulent swelling at the base of the flower of Impatiens fulva, in September; contains red larve. (Communicated to me by Prof. Schaeffer. ) 31. C. farinosa, n. sp. Rounded woody swelling at the base of the leaflets or on the midrib of the common blackberry; contains red larvee. 32. C. agrostis, n. sp. Mentioned in Dr. Fitch’s paper:, The Hessian Fly, etc. (Trans. N. Y. State Agric. Soc., Vol. VI), on p. 38 of the second edition, in pamphlet form, in a note which I reproduce here: ‘‘I doubt whether the Hessian fly will continue to be the sole member of this genus having a coarctate pupa. Quite recently a species has occurred to my notice analogous to the Hessian fly flaxseed in every point that I have been able to detect, except that its larva-case is of a pale brown color, untinged with rufous or castaneous. It infests the Agrostis lateriflora? num- bers dwelling together in an imbricated gall, somewhat resembling a CECIDOMYIA. 205 the fertile aments of the hop, though larger, and connected with the main stalk by a short pedicel which is inserted into one of the lowest joints of the culm. From the coriaceous texture of the larva case, I suspect the inclosed worm will not leave it until trans- formed to a pupa and upon the point of evolving the perfect fly.” It deserves to be noticed that Cecid. graminicola, discovered by Kaltenbach (Winnertz, |. c. p. 292), having precisely similar ha- bits, forms an apparently analogous gall, likewise on a herbaceous plant, Poa nemoralis. ee eX, abbreviata, Parydra, 168 Acalyptratae, 33 Acanthocera, 20 Acanthomera, 19 Acanthomeridae, 19 Acanthomyia, 17 Acanthoneura, 49 Acarterus 30 Achalcus, 32 aciculata, Psilopa, 142 Acidia, 49 acidusa, Trypeta, 57 Acinia, 49, 50 Acinia comma, 58 noveboracensis, 78 solidaginis, 82 Aciura, 49, 50 Aclada, 13 Acnephalum, 23 Acreotrichus, 25 Acrocheta, 17 Actina, 17, 18 Actora, 37 Acurana, 23 Adelidea, 25 Adraga, 18 Aedes, 5 wenea, Ortalis, 59 aequalis, Trypeta, 86 Agromyza, 46 Agromyzidae, 46 agrostis, Cecidomyia, 204 Aissa, 18 alba, Trypeta, 100 albidipennis, Trypeta, 100 albiscutellata, Trypeta, 57, 60 Alcimus, 23 Allarithmia, 11 Alliocera, 18 Amalopis, 10, 11 americana, Blepharocera, 8 Amictus, 25 Ampsalis, 18 Ampyx, 23 Anabarhynchus, 24 Anacanthelia, 18 Analcocerus, 17 Anarete, 7, 177 Anaretina, 7, 174 Anarolius, 23 Andrenosoma, 24 Anepsius, 32 anilis, Dryomyza, 128 Anisomera, 10, 11 Anisophysa, 18 Anisotamia, 25, 26 annulata, Gynoplistia, 13 Anomoia, 50 Anopheles, 5 Anthalia, 30 Anthomyia, 36 Anthomyidae, 36 Anthophilae, 33 Anthrax, 25, 26 antica, Sciomyza, 104 antillarum, Trypeta, Urophora, Or- talis, 57, 61 Antipalus, 24 Antiphrisson, 24 Antocha, 10, 11, 12 Apatomyza, 25, 26 Apeilesis, 10 Aphrites, 25 Aphrosylus, 32 Aplomera, 30 Apoclea, 23 Apolysis, 25 Aporosa, 10 appendiculata, Paralimna, 138 Aragara, 50 arcuata, Tetanocera, 115 arcuata, Trypeta, Ortalis, 57, 60 Ardoptera, 31 Argyra, 32 Argyromeeba, 25, 26 Argyrospila, 25 Aricia, 36 armata, Trypeta, Strauzia, 58, 60, 65 armipes, Sepedon, 126 Arrhenica, 10, 11 Artemida, 18 Arthria, 14, 15 208 Arthropeas, 16 Asilidae, 22 Asilina, 23 Asilus, 24 Asindulum, 13 Asphondylia, 7, 176 Aspistes, 14 Asteidae, 47 asteris, Trypeta, 58, 99 Astomella, 21 Asynapta, 7, 177 Ataracta, 11 Atherix, 20 Athyroglossa, 132 Atissa, 149 Atomosia, 23, 24 atra, Psilopa, 143 Atractia, 24 atrovirens, Ephydra, 169 Aulacephala, 33 Autonia, 25 avala, Trypeta, 58 Axysta, 149, 155 Azana, 13 Baccha, 26 Bactrocera, 51 balioptera, Discomyza, 140 Baryphora, 24 Basentidema, 17 Bathypogon, 23, 24 beauvoisii, Trypeta, 58, 98 bella, Notiphila, 135 bella, Trypeta, 88 Belvoisia, 35 Beridina, 17 Beris, 17 Biastes, 18 Bibio, 14, 15 Bibionide, 2, 3, 14 Bibionina, 14 bituberculata, Parydra, 165 Bittacomorpha, 10, 12 Blastocera, 18 Blepharipeza, 35 Blepharocera, 8 Blepharocera americana, 8 Blepharocerida, 8 Blepharotes, 23 Bolbomyia, 17 Boletina, 13, 14 Bolitophila, 13, 14 Bombylida, 25 Bombylius, 25 Bombylosoma, 25 Borborida, 47 Borborus, 47 boscii, Tetanocera, 108 INDEX. Brachycera, 2, 15 Brachydeutera, 162 Brachydeutera dimidiata, 163 brachynteroides, Cecidomyia, 198 Brachypalpus, 13, 26 Brachyrhopala, 22 Brachystoma, 30 brevicauda, Dicheta, 133 breviceps, Parydra, 167 Cabasa, 23 Cacosis, 17 Cadicera, 20 Cadrema, 29 Cenia, 159 ceruleiventris, Psilopa, 144 Calantra, 50 caliptera, Cecidomyia, 187 caliptera, Trypeta, 58, 60, 78 Calliphora, 35 Callomyia, 28, 29 Callostoma, 25 Calobzxa, 103 Calobamon, 11 Calobata, 39 Calyptrate, 33 Campeprosopa, 17 Campsicnemus, 32 Camptoneura, 50 Campylocera, 49 Campylomyza, 7, 178 Campylomyza scutellata, 187 Canace, 158 canadensis, Tetanocera, 108 carbonifera, Cecidomyia, 196 Cardiacera, 51 carinata, Notiphila, 137 Carpomyia, 50 cary, Diplosis, 189, 191 caryecola, Cecidomyia, 192 Catocha, 7, 177 caudata, Dicheta, 133 Cecidogona, 7, 178 Cecidomyia, 7, 174, 176, 187 Cecidomyia agrostis, 204 oe brachynteroides, 198 caliptera, 187 caryecola, 192 carbonifera, 196 cerealis, 187 chrysopsidis, 190, 203 culmicola, 189 cynipsea, 193 destructor, 189 erubescens, 200 farinosa, 204 glutinosa, 193 grossulariz, 189 INDEX. Cecidomyia hirtipes, 190, 195 holotricha, 193 impatientis, 204 liriodendri, 202 niveipila, 199 ocellaris, 199 ornata, 187 pellex, 199 persicoides, 193 pini Deg., Diplosis, 197 pini inopis, 196 poculum, 201 pseudoacacize, 189 pudibunda, 202 racemicola, 196 rigide, 189 robinie, 189 salicis, 189 sanguinolenta, 192 serrulate, 189, 198 solidaginis, 190, 194 spongivora, 187 strobiloides, 203 symmetrica, 200 tergata, 187 thoracica, 187 tritici, 189 tubicola, 192 tulipiferz, 202 vaccinii, 196 viticola, 202 Cecidomyide, 6, 173 Cecidomyina, 7, 174 Cephalia, 40 Cephalocera, 22 Cephalomyia, 33 Cephenemyia, 33 Cerajocera, 50 Ceratitis, 49, 50 Ceratopogon, 5 Ceraturgus, 23, 24 Cerdistus, 2 cerealis, Cecidomyia, 187 Ceria, 26 . Ceroplatus, 13 Ceroxys, 40 Chalarus, 27 Chalcochiton, 25 Chauna, 18, 19 Cheilopogon, 22 Cheilosia, 26 Chenesia, 6— Chetostoma, 50 Chionea, 9, 11 Chiromyza, 17 Chironomide, 5 Chironomus, 5 Chlorops, 46 14 209 Cheerades, 23 Chordonota, 18 Choristus, 25 Chrysochlamys, 26 Chrysochlora, 17 Chrysogaster, 26 Chrysomyia, 18 Chrysonotus, 18 Chrysopila, 20 Chrysops, 20- chrysopsidis, Cecidomyia, 190, 203 Chrysosoma, 35 Chrysothemis, 4, 15, 16 Chrysotimus, 32 Chrysotoxum, 26 Chrysotus, 32 Chyliza, 38 Chymophila, 26 Chyromantis, 31 cinctipes, Trypeta, 58, 60 cingulata, Trypeta, 76 Cionophora, 24 Cladura, 10, 11 Clanis, 20 clara, Tetanocera, 109 clathrata, Trypeta, 80 Clinocera, 51 Clitellaria, 18, 19 Clinorhyncha, 7, 175 Clorisoma, 18 Clunio, 6 Codula, 23 Coelopa, 42 Cenomyia, 16 Ccenomyina, 16 Coenosia, 36 Colax, 21 Colpodia, 7, 176 combinata, Tetanocera, 116 comma, Trypeta, 58, 93 Comptosia, 25 Conopina, 27 Conops, 27 Cordyla, 13 Cordylura, 36 Cordyluride, 36 Corethra, 5 Corethra punctipennis Say, 5 Coriacea, 4, 48 Cormansis, 23 cornifera, Trypeta, 58, 60, 65 cornigera, Trypeta, 58, 60, 65 Corsomyza, 25 Corynocerus, 5 Corynoneura, 6 Corythophora, 131, 132 costalis, Tetanocera, 118 Crapitula, 15 210 Craspedia, 23 Crassiseta, 46 Creophile, 33 Critoneura, 11 Crobilocerus, 23 Crocidium, 25 Cryptineura, 26 Cryptolabis, 10, 11 Ctenogyna, 10 Ctenophora, 10. 11 Ctenostylum, 33 Ctenulus, 103 Culeua, 18 Culex, 5 Culicide, 5 Culicoides, 6 culmicola, Cecidomyia, 189 culta, Trypeta, 58, 94 Cuterebra, 33 Cyclogaster, 18 Cyclotelus, 16, 24 Cyclorhynchus, 25 Cylindrotoma, 10, 11 Cyllenia, 25 cynipsea, Cecidomyia, 193 Cynomyia, 35 Cyphomyia, 18, 19 Cyrtide, 21 Cyrtina, 21 Cyrtoma, 30, 31 Cyrtoneura, 35 Cyrtophrys, 22 Cyrtosia, 25 Cyrtus, 21 Dacina, 40, 51 Dactyliscus, 23 Dactylolabis, 11 Dacus, 40, 49, 50 Dacus olez, 50 Damalis, 23 Dasophrys, 23 Daspletis, 23 Dasybasis, 20 Dasyliis, 23 Dasyneura, 50, 51 Dasyomma, 20 Dasypalpus, 25 Dasypogon, 22, 24 Dasypogonina, 22 Dasythrix, 23 debilis, Philygria, 157 Dejeania, 35 Delphinia, 40 destructor, Cecidomyia, 189 Dexide, 33 Diabasis, 20 Diadocidia, 13 INDEX. Dialysis, 16 Dialyta, 36 Diamesa, 6, 7 Diaphorus, 32 ‘| Diapnesia, 14 Diastata, 45 Dicheta, 45, 132 Dicheta brevicauda, 133 caudata, 133 Dichelacera, 20 Dicrania, 20 Dicranomyia, 10, 11, 13 Dicranophora, 17 Dicranophragma, 10, 11 Dicranoptycha, 10, 11 Dicranota, 10, 11 Dicranus, 23 Didea, 26 Dilophus, 14, 15 Dimassus, 16, 24 Dimeraspis, 27 dimidiata, Brachydeutera, 163 Dinera, 34 dinia, Trypeta, 58 Dioctria, 23 Dioctria octopunctata, 24 Dionomus, 14 Diopside, 44 Diphysa, 17 Diplonema, 9 Diplosis, 7, 176 Diplosis cary, 189, 191 maccus, 187 pini Deg., 197 robiniz, 189 Dirhiza, 7, 176 Dischistus, 25 Discocephala, 23, 24 Discocerina, 45, 132, 145 Discocerina lacteipennis, 145 leucoprocta, 148 orbitalis, 147 parva, 146 simplex, 147 discolor, Trypeta, 64 Discomyza, 45, 132, 140 Discomyza balioptera, 140 Dithryca, 50 Ditomyia, 13, 14 Dixa, 9, 11 Dolichodes, 23 Dolichogaster, 22 Dolichomyia, 25 Dolichopeza, 10, 13 Dolichopodide, 32 Dolichopus, 32 Doros, 26 Drapetis, 31 | Drosophila, 46 Drosophilide, 45 Dryodromia, 31 Dryomyza, 37, 128 Dryomyza anilis, 128 simplex, 128 Dysclytus, 23 Dyseris, 23 Dysmachus, 23 Eccoptopus, 24 Echinomyia, 35 Echthistus, 24 Eclimus, 25 Ectecephala, 46 Ectenopsis, 20 Ectinorhynchus, 24 Elaphromyia, 50 Elaphropeza, 31 Elasmocera, 23 electa, Trypeta, 71 Electra, 4, 15, 16 Elephantomyia, 10, 11, 13 Empide, 30 Empis, 30 Enica, 25, 26 Enicocera, 51 Eniconeura, 25 Ensina, 49 Ephippium, 18 Ephydra, 45, 159, 169 Ephydra atrovirens, 169 Ephydrina, 45, 131, 158 Ephydrinide, 44, 129 Epicerella, 49 Epicerina, 21 Epidapus, 15 Epidesmia, 50 Epidosis, 7, 177 Epiphragma, 10, 11 Epistrophe, 26 Epitriptus, 24 Eproboscide, 4 Erax, 23, 24 Eriocera, 10, 11 Eriogaster, 30 Eriopogon, 23 Erioptera, 10, 11 Eriosoma, 21 Eriphia, 36 Eristalis 26 Eristicus, 23 _ Erodiorhynchus, 20 _ erubescens, Cecidomyia, 200 Estheria, 34 Euarmostus 23, 24 _ Eudmeta, 17 | Euleia, 50 Ee INDEX. 211 Eulonchus, 21 ~ Eumerus, 27 Eumetopia, 39 Euparyphus, 18, 19 Eupeitenus, 15 Eurina, 46 Eurycarenus, 25 f Euscelidia, 23 Eutarsus, 32 Euthyneura, 30 Eutolmus, 23 Evanioptera, 10 Evaza, 18 Exapata, 24 Exetasis, 21 Exeretoneura, 21 Exochostoma, 17 Exodontha, 17 Exoprosopa, 25, 26 exsculpta, Ochthera, 160 Fallenia, 22 farinosa, Cecidomyia, 204 favillacea, Scatella, 170 festiva, Trypeta, 86 fimbriata, Trypeta, 58, 60 flavescens, Tetanocera, 113 flavonotata, Trypeta, 58, 60, 71 flexa, Trypeta, Ortalis, 58, 61 Forellia, 49 formosa, Hydrellia, 154 fratria, Trypeta, 67 fucata, Trypeta, 58, 95 fulvifrons, Trypeta, Ortalis, 59, 61 fuscicornis, Philygria, 155 fuscipennis, Sepedon, 124 Gabaza, 18 Gastrichelius, 23 Gastroxides, 20 Gastrus, 33 Geomyzide, 45 Geranomyia, 10, 11, 13 Geron, 25 Glenanthe, 149 Glochina, 10 Gloma, 30, 31 Glossista, 25 glutinosa, Cecidomyia, 193 Gnophomyia, 10 : Gnoriste, 13 Gonia, 35 Gonoglossum, 50 Gonomyia, 10, 11 Gonypes, 23 Graphomyza, 103 Grossulariz, Cecidomyia, 189 guttularis, Tetanocera, 108 , 212 Gymnopternus, 32 Gymnosoma, 35 Gymnosomina, 35 Gynoplistia, 10, 13 Gynoplistia annulata, 13 Habropogon, 23 Hadrus, 20 Haemasson, 9 Haematopota, 20 Halmopota, 159 - Haltericerus, 5, 32 Haploneura, 11 Harpamerus, 30 Hecamede, 132, 145 Heleodromia, 31 Heligmoneura, 23 Helomyza, 37 Helomyzide, 37 Helophilus, 26 Hemerodromia, 31 Henops, 21 Hercostomus, 32 Herina rufitarsis, 59, 60 Hermetia, 18, 19 Hermetina, 18 Hesperinus, 10, 13, 15 Heteromyia, 6 Heteroneura, 42 Heteroneuridz, 42 Heteropeza, 7 Heteropogon, 23 Heterostylum, 25 Heterotricha, 14 Heteroxycera, 13 Hexastoma, 20 Hilara, 30 Hippobosea, 48 Hippoboscide, 4, 5, 48 Hirmoneura, 21, 22 Hirmoneuride, 21 Hirmoneurina, 21 hirtipes, Cecidomyia, 190, 195 Holopogon, 23 holotricha, Cecidomyia, 193 Homalomyia, 36 Homalura plumbella, 46 Hoplistes, 17 Hoplistomera, 23 Hormomyia, 7, 176 Hormopeza, 30 humilis, Trypeta, 81 Hyadina, 149, 155 Hyalomyia, 35 Hybos, 30 Hybotide, 29 Hydrellia, 45, 149, 150 Hydrellia formosa, 154 INDEX. Hydrellia ischiaca, 150 hypoleuca, 151 obscuripes, 152 scapularis, 153 valida, 153 Hydrellina, 45, 131, 149 Hydrobaenus, 5 Hydrophorus, 32 Hygroceleuthus, 32 Hylemyia, 36 Hypenetes, 23 Hypoderma, 33 hypoleuca, Hydrellia, 151 Hypophyllus, 32 Hystricia, 35 Ibisia, 20 Idioptera, 11 Illigera, 35 Ilythea, 159 impatientis, Cecidomyia, 204 inermis, Trypeta, Strauzia, 59, 60, 65 Inermyia, 18 Inopus, 17 insecta, Trypeta, 58, 72 interrupta, Trypeta, Ortalis, 59, 61 ischiaca, Hydrellia, 150 Isopogon, 23 Itamus, 24 Iteaphila, 30 Jurinea, 35 Labidomyia, 6 lacteipennis, Discocerina, 145 Lagochilus, 25 Lagodias, 22 Lampria, 23, 24 Lamprozona, 23 Lamyra, 23 Laparus, 22 Laphria, 23, 24 Laphrina, 25 Laphyctis, 23 Laphystia, 23, 24 Lasia, 21 Lasiocnemus, 23 Lasiomastix, 11 Lasiopa, 18 Lasioprosopa, 25 Lasioptera, 7, 174 Lasioptera vitis, 202 Lastaurus, 22, 24 latifrons, Trypeta, 89 latipennis, Trypeta, Platystoma, 59, 60, 78 Lauxania, 41 Lauxanide, 57 . \ | Laxenecera, 23 Lecania, 24 Leja, 13 Lepidophora, 25 Lepiselaga, 20 Leptide, 20 Leptipalpus, 20 Leptis, 20 Leptogaster, 23, 24 Leptomorphus, 13 Leptopeza, 30 Leptosceles, 31 Leptoxys, 51 Lestremia, 7, 178 leucoprocta, Discocerina, 148 Leucostola, 32 Liancalus, 32 lichtensteinii, Trypeta, 59, 92 Ligyra, 25 Lilaea, 20 Limnobia, 10, 11 Limnobina, 10, 12 Limnobiorhynchus, 10, 11 Limnophila, 10, 11 Lipara, 82 Lispe, 36 Lissa, 39 Litorhynchus, 25 Lonchea, 41 Loncheide, 41, 56 Loncheina, 41 Lonchoptera, 29 Lonchopteride, 29 Lobioptera, 46 Lomatia, 25 longipennis, Trypeta, 59, 65 Lophonotus, 23 Lophoteles, 18 Loxocera, 38 Lucilia, 35 luctifera, Sciomyza, 107 lugens, Scatella, 171 liriodendri, Cecidomyia, 202 Lyroneurus, 32 maccus, Diplosis, 187 Macherium, 32 Machimus, 23 Macrocera, 13, 14 Macrochile, 10, 12 Macroneura, 13 Macropeza, 6 macropus, Sepedon, 125 Macrorhyncha, 13 Macrostyla, 7 Mallophora, 23, 24 Mallota, 26 Mantipeza, 31 INDEX. 213 mantis, Ochthera, 161 marginepunctata, Trypeta, 59, 60, 97 Masicera, 35 Medeterus, 32 Megapalpus, 25 Megapoda, 23, 24 Megapollion, 23 Megaprosopus, 34 Megarhina, 5 Meghyperus, 30 | Megistocera, 10 Megistorhynchus, 22 melanogastra, Trvpeta, 90 melliginis, Trypeta, Ortalis, 59 Melithreptus, 26 Melophagus, 48 Melpia, 20 Meracantha, 49 Merodon, 26 Meromyza, 46 Merosargus, 17 Mesocera, 21 Mesogramma, 26 Mesomyia, 20 Mesophysa, 21 Messala, 14 Metabasis, 18 Metopia, 35 Metoponia, 17, 18 mevarna, Trypeta, 59, 95 mexicana, Trypeta, 59, 96 Michotamia, 23 Microcera, 31 Microchrysa, 18 Microdon, 26 Micropalpus, 35 Micropeza, 39 Micropezide, 38 Microphorus, 30 Microphthalma, 34 Microsania, 30 Microstylum, 23, 24 Midas, 22 Midaside, Milesia, 26 Milichia, 46 Miltogramma, 35 Mixtemyia, 26 Mochlonyx, 5 Mochtherus, 23, 24 Morimna, 22 Mulio, 25 Musea, 35 Muscarie calyptrate, 33 Muscarie acalyptrate, 33 Muscide, 35 Mycetobia, 13 Mycetophila, 13, 14 214 Mycetophilide, 13 Myoleja, 50 Myopa, 27, 28 Myopide, 27 Myopina, 27 Myopites, 50, 53 Neeta, 49 nana, Sciomyza, 104 narytia, Trypeta, 59, 95 Nemapalpus, 9 Nematoproctus, 32 Nemestrina, 22 Nemestrinid, 21 Nemocera, 2, 5 Nemopoda, 43 Nemorvea, 35 Nemorius, 20 Nemotelus, 18, 19 Nephrotoma, 10, 13 Nerius, 39 Neuria, 25 Nephrocerus, 27 Nerua, 18 nigripalpa, Sciomyza, 104 nigriventris, Trypeta, 59, 98 niveipila, Cecidomyia, 199 Nodutis, 20 Nonacris, 16 Notiphila, 45, 132, 134 Notiphila bella, 135 carinata, 137 scalaris, 134 unicolor, 137 vittata, 136 Notiphilina, 45, 131 noveboracensis, Trypeta, 59, 60, 78 Nuceria, 20 Nusa, 23 Nycteribide, 48 Nygmatodes, 9 obliqua Macq., Trypeta, 59, 97 obliqua Say, Trypeta, 60, 99 Obrapa, 18 obscuripes, Hydrellia, 152 Obsebius, 21 obsoleta, Scatella, 172 obtusa, Sciomyza, 105 ocellaris, Cecidomyia, 199 Ochthera, 45, 149, 159 Ochthera exsculpta, 160 mantis, 161 rapax, 162 tuberculata, 161 Ocnea, 21 . ocresia, Trypeta, 60 Ocydromia, 30 INDEX. Ocyptamus, 26 Ocyptera, 35 Ocypterina, 34 Odontomyia, 18, 19 Odontomyina, 18 Oedalea, 30 Olfersia, 48 Oligodranes, 25 Oligopogon, 23 Ommatius, 24 Oncodes, 21 Oncodina, 21 Oncodocera, 25, 26 Opetia, 28 Oplocheta, 50 Opomyzide, 43 opposita, Philygria, 156 orbitalis, Discocerina, 147 Orellia, 49, 50 ornata, Cecidomyia, 187 Ornithomyia, 48 Orphnephila, 6 Orphnephila testacea, 6 ; Ortalide, 39, 49, 50, 56, 57, 58, 59, 61, 82 Ortalina, 40 Ortalis, 40, 93 Ortalis enea, 59 antillarum, Trypeta, 57, 61 arcuata, Trypeta, 57, 60 flexa, Trypeta, 58, 61 fulvifrons, Trypeta, 59, 61 ?interrupta, Trypeta, 59, 61 melliginis, Trypeta, 59, 60 quadrifasciata, Trypeta, 60 quadrivittata, Trypeta, 60, 61 ’tabellaria, Trypeta, 60, 61 Orthoneura, 26 Oscinide, 46 Osea, 20 Oscinis, 46 Oxycera, 18, 19 Oxyna, 49, 50 Oxyphora, 49 Ozodicera, 10 Pachycerina, 41 Pachygaster, 18, 19 Pachygastrina, 18 Pachymeria, 30 Pachyneura, 15 Pachyrhina, 10, 11, 12 Pachystomus, 15, 16 pallida, Tetanocera, 113 . Palloptera, 41 Pallopteridz, 57 Pallopterina, 41 Palpomyia, 6 palposa, Trypeta, 60 Pamponerus, 24 Panacris, 18 Pangonia, 19, 20 Pangonina, 19 Panops, 21 Paragus, 26 Paralimna, 45, 131, 132, 138 Paralimna appendiculata, 138 parallela, Sciomyza, 104 parallela, Trypeta, 51 Paramesia, 31 Parisus, 25 parva, Discocerina, 146 Parydra, 45, 159, 164 Parydra abbreviata, 168 bituberculata, 165 breviceps, 167 paullula, 167 quadrituberculata, 165 paullula, Parydra, 167 Pedicella, 17 Pedicia, 10, 11, 12 Pegesimallus, 22 Pelecorhynchus, 20 Pelidnoptera, 103 Pelina, 149, 158 pellex, Cecidomyia, 199 Penthetria, 14 Peodes, 32 Pericoma 9 persicoides, Cecidomyia, 193 Petalophora, 49 Petalophora capitata, 41 Phalenomyia, 9 Phara, 20 Phasia, 35 Phasina, 35 Phellus, 23 Pheneus, 23, 24 Philematus, 9 Philammosius, 23 Philodicus, 23, 24 Philoliche, 20 Philopota, 21 Philygria, 45, 149, 155 Philygria debilis, 157 fuscicornis, 155 opposita, 156 Phlebotomina, 9 Phlebotomus, 9 Phoneus, 23 Phora, 4, 47 Phoride, 4, 47 Phoroxypha, 31 Phryssopoda, 35 Phthiria, 25, 26, Phycodromide, 42 INDEX. 215 Phycus, 16, 24 Phyllis, 21 Phyllodromia, 31 Phyllophora, 18 Physegaster, 21 Phytomyza, 47 Phytomyzide, 47 Pialea, 21 picta, Trypeta, Camptoneura, 50, 60, 61 : pictipes, Tetanocera, 111 pini Deg., Diplosis, 197 pini inopis, Cecidomyia, 196 Piophila, 44 Piophilide, 44 Pipiza, 26 Pipunculidz, 28 Pipunculus, 27 Pithogaster, 21 Plagiocera, 26 Plagioneurus, 32 Platycephala, 46 Platycheirus, 26 Platycnema, 28, 29 Platyna, 18 Platypalpus, 31 Platypeza, 28, 29 Platypezide, 28 Platypygus, 25 Platyroptilon, 13 Platystoma latipennis, 59, 78 Platyura, 13, 14 plebeja, Tetanocera, 120 Plecia, 15 Plesiastina, 13, 14 Plesiocera, 25 Plesiomma, 23, 24 Pleurocerina, 27 Plinthina, 20 Ploas, 25 plumosa, Tetanocera, 121 poculum, Cecidomyia, 201 Pogonosoma, 23 polita, Trypeta, 77 Pollenia, 35 Polydonta, 26 Polymera, 10, 11 Polyphonius, 23 Pomacera, 22 Porphyrops, 32 Posthon, 9 Prionella, 49 Prionocera, 10 Prionolabis, 11 Prionomyia, 6 Proagonistes, 24 Proboscidea, 4 Prochyliza, 38, 44 216 Proctacanthus, 23, 24 Prolepsis, 23 Promachus, 23, 24 Promeranisa, 18 ~ Pronopes, 20 Prosena, 34 Protophanes, 23 Protoplasa, 10, 11, 12 Psammorycter, 20 Psarus, 27 pseudoacacize, Cecidomyia, 189 Pseudorus, 23 Psila, 38 Psilide, 38 Psilocephala, 24 Psilodera, 21 Psilopa, 45, 132, 141 Psilopa aciculata, 142 atra, 143 ceruleiventris, 144 scoriacea, 142 umbrosa, 143 Psilopus, 32 Psilota, 27 Psorophora, 5 Psychoda, 9 Psychodide, 9 Psychodina, 9 Ptecticus, 17 Pterocosmus, 10, 13 Pterodontia, 21 Pteropexus, 21 Pterospilus, 30 Ptilocera, 18 Ptilogyna, 10 Ptiolina, 20 Ptychoptera, 10, 11, 12 Ptychopterina, 12 pubera, Sciomyza, 106 pudibunda, Cecidomyia, 202 punctipennis, Corethra, 5 pusillus, Sepedon, 127 Pycnomalla, 18 Pycnopogon, 23 Pyrellia, 35 Pyrgota, 40 quadrifasciata Walk., Trypeta, Orta- lis, 60 quadrifasciata Macq., Trypeta, 60, 98 quadrituberculata, Parydra, 165 quadrivittata, Ortalis, 60, 61 racemicola, Cecidomyia, 196 Rachicerina, 16 Rachicerus, 4, 16, 17 Rachiptera, 50 Ragas, 30 INDEX. rapax, Ochthera, 162 Raphiocera, 17 Raphiorhynchus, 19 Rhabdogaster, 23 Rhadinus, 23 Rhadiurgus, 24 Rhamphidia, 10, 11, 12 Rhamphomyia, 30 Rhaphium, 32 Rhingia, 26 Rhinomyza, 20 Rhipidia, 10, 11 Rhopalia, 22 Rhopalogaster, 23 Rhynchocephalina, 21 Rhynchocephalus, 22 Rhyphide, 3, 15 Rhyphus, 15 rigid, Cecidomyia, 189 Rioxa, 51 Rivellia, 40, 50 robiniz, Diplosis, 189 Rosapha, 18 rotundicornis, Tetanocera, 123 rotundipennis, Trypeta, 79 rufitarsis, Herina, 59, 60 Sabethes, 5 Saccopteryx, 9 Salduba, 17 salicis, Cecidomyia, 189 sanguinolenta, Cecidomyia, 192 Sapromyza, 41 Sapromyzide, 41, 55, 57 saratogensis, Tetanocera, 119 Sarcophaga, 35 Sarcophagide, 35 Sargina, 17 Sargus, 18 Saropogon, 22, 23 Saruga, 18 Saucropus, 32 Sceva, 26 sealaris, Notiphila, 134 Scandon, 23 Scaptia, 20 scapularis, Hydrellia, 153 Scarphia, 20 Scatella, 45, 159, 170 favillacea, 170 lugens, 171 obsoleta, 172 Seatophaga, 36 Scatopse, 14, 15 Scatopsina, 14 Scellus, 32 Scenopinide, 28 Scenopinus, 27 Scepsis, 20 Schcenomyza, 37 Sciara, 14 Sciobia, 13 Sciodromia, 31 Sciomyza, 37, 104 antica, 104 luetifera, 107 nana, 104 nigripalpa, 104 obtusa, 105 parallela, 104 pubera, 106 Sciomyzide, 37, 103 Scione, 20 Sciophila, 13, 14 scoriacea, Psilopa, 142 scutellaris, Trypeta, 60, 92 seutellata, Campylomyza, 187 scutellata, Trypeta, 60, 92 Scylaticus, 23 Selasoma, 20 Senobasis, 23 Senopterina, 51 Sepedon, 37, 104, 124 ' Sepedon armipes, 126 fuscipennis, 124 macropus, 125 pusillus, 127 Sepside, 43 Sepsis, 43 septenaria, Trypeta, 60 seriata, Trypeta, 84 Sericomyia, 26 Sericosoma, 25 serrulate, Cecidomyia, 189, 198 Silvius, 20 simplex, Discocerina, 147 simplex, Dryomyza, 128 Simulide, 14 Simulium, 14 Siphonella, 46 Sisyrnodytes, 23 Sitaria, 49 Smiliotus, 32 solaris, Trypeta, 59, 84 solidaginis, Cecidomyia, 190, 194 solidaginis, Trypeta, 60, 82, 94 Solva, 18 Somula, 26 Spania, 20 Spaniocera, 7, 174 Spanurus, 23 Sparnopolius, 25 sparsa, Tetanocera, 117 sparsa, Trypeta, 60, 78 Spathulina, 50 Spheromyias, 6 INDEX. 217 Spherophoria, 26 Sphecomyia, 26 Sphegina, 26 Sphenella, 49 Sphyracephala, 44 Spodius, 15 Spogostylum, 25 spongivora, Cecidomyia, 187 Spyridopa, 18 Stachynia, 27, 28 Stegana, 46 Stegana hypoleuca, 46 Stenopogon, 23, 24 Stenoproctus, 30 Stenoprosopis, 23 Stenopterina, 51 Sternobrithes, 18 Stichopogon, 23, 24 Stilpnogaster, 24 Stomoxys, 35 Stratiomyide, 4, 17 Stratiomys, 18, 19 Strauzia, 49 Strauzia armata, 58, 65 inermis, 59, 65 Strebla, 48 strobiloides, Cecidomyia, 203 Strumeta, 51 struthio, Tetanocera, 121 Stylia, 49 suavis, Trypeta, 75 Subula, 15, 16 suspensa, Trypeta, 59, 69 Sybistroma, 32 Sycorax, 9 Symmerus, 13 symmetrica, Cecidomyia, 200 Symmictus, 22 Symplecta, 10, 11 Sympyenus, 32 Synapha, 14 Synarthrus, 32 Syndyas, 30 Syneches, 30 Synolcus, 23 Syntormon, 32 Syrphide, 26 Syrphus, 26 Syritta, 26 Systenus, 32 Systoechus, 25 Systropus, 25 Tabanide, 4, 19 Tabanina, 19 Tabanocella, 20 Tabanus, 20 tabellaria, Trypeta, Ortalis, 60, 61 218 Tabuda, 24 Tachina, 35 Tachinide, 34 Tachinina, 34 Tachydromia, 31 Tachydromide, 31 Tachytrechus, 32 Tacina, 20 Teniaptere, 39 Tanypus, 5 Tanyrhina, 8 Tapinocera, 23 Temnocera, 26 Tephritis, 49, 50 Tephritis flavonotata, 71 trimaculata, 65 Teratopus, 23 ’ Terellia, 49, 50 tergata, Cecidomyia, 187 Terphis, 21 testacea, Orphnephila, 6 Tetanocera, 37, 107, 108 Tetanocera arcuata, 115 Boscii, 108 canadensis, 108 clara, 109 combinata, 116 costalis, 118 flavescens, 113 guttularis, 108 pallida, 113 pictipes, 111 plebeja, 120 plumosa, 121 rotundicornis, 123 saratogensis, 119 sparsa, 117 struthio, 121 triangularis, 122 valida, 110 vicina, 121 Tetanopina, 40 Tetragoneura, 13, 14 Teucholabis, 10, 11 Teuchophorus, 32 Thalassomyia, 6 Thaumalea, 6 Thecomyia, 103 Themara, 50 Thereua, 24 Thereutria, 23 Therevide, 24 Therioplectes, 20 Thinophilus, 32 Thlipsomyza, 25 thoracica, Cecidomyia, 187 Thorasena, 18 Tichomyza, 159 INDEX. Tinda, 18 Tipula, 10, 11 Tipulide, 9 Tipulina, 10, 11 Tolmerus, 24 Tomomyza, 25 Toxocera, 17 Toxomerus, 27 Toxophora, 25 Toxorhina, 10 Toxura, 49 Tracana, 18 triangularis, Tetanocera, 122 tribulis, Trypeta, 60 Trichocera, 10, 11 Trichodura, 34 Trichomyia, 9 Trichoneura, 11 Trichonotus, 23 Trichopeza, 30 Trichophthalma, 22 Trichopoda, 35 Trichopsidea, 22 Triclis, 23 Tricyphona, 10 trifasciata, Trypeta, 60 trimaculata, Trypeta, 60, 65 Trimerina, 132 Triplasius, 25 Triptotricha, 20 tritici, Cecidomyia, 189 Tritozyga, 177, 178 Tropidia, 26 Trupanea, 49 Trypeta, 41, 57, 62 Trypeta acidusa, 57 aequalis, 86 alba, 100 albidipennis, 100 albiscutellata, 57, 60 antillarum, 57, 61 arcuata, 57, 60 armata, 58, 60, 65 asteris, 58, 99 avala, 58 beauvoisii, 58, 98 bella, 88 caliptera, 58, 60, 78 cinctipes, 58, 60 cingulata, 76 clathrata, 80 comma, 58, 93 cornigera, 58, 60, 65 cornifera, 58, 60, 65 culta, 58, 94 dinia, 58 discolor, 64 electa, 71 INDEX. 219 Trypeta festiva, 86 fimbriata, 58, 60 flavonotata, 58, 60, 71 flexa, 58, 61 fratria, 67 fucata, 58, 95 fulvifrons, 59, 61 humilis, 81 inermis, 59, 60, 65 insecta, 58, 72 interrupta, 59, 61 latifrons, 89 latipennis, 59, 60, 78 lichtensteinii, 59, 92 longipennis, 59, 65 marginepunctata, 59, 60, 97 melanogastra, 90 melliginis, 59, 60 mevarna, 59, 95 mexicana, 59, 96 narytia, 59, 95 noveboraecensis, 59, 60, 78 nigriventris, 59, 98 obliqua Macgq., 59, 97 obliqua Say, 60, 99 ocresia, 60 parallela, 51 palposa, 60, 74 picta, 60, 61 polita, 77 quadrifasciata Walk., 60 quadrifasciata Macq., 60, 98 quadrivittata, 60,61 ° rotundipennis, 79 scutellaris, 60, 92 scutellata, 60, 96 septenaria, 60 seriata, 84 solaris, 59, 84 solidaginis, 60, 82 sparsa, 60, 78 suavis, 75 suspensa, 59, 69 tabellaria, 60, 61 tribulis, 60 trifasciata, 60 trimaculata, 60, 65 Trypeta unicolor, 59, 60, 70 vernonia, 101 villosa, 60, 99 Trypetide, 40, 49, 56 Trypetina, 40, 51, 52, 53 Trypoderma, 33 tuberculata, Ochthera, 161 tubicola, Cecidomyia, 192 tulipiferse, Cecidomyia, 202 Ula, 10, 11 Ulomyia, 9 umbrosa, Psilopa, 143 unicolor, Notiphila, 137 unicolor, Trypeta, 59, 60, 70 Urellia, 49 Urophora, 49, 50, 57 Usia, 25 vaccinii, Cecidomyia, 196 valida, Hydrellia, 153 valida, Tetanocera, 110 Vermileo, 20 vernonie, Trypeta, 101 vicina, Tetanocera, 121 villosa, Trypeta, 60, 99 viticola, Cecidomyia, 202 vitis, Lasioptera, 202 vittata, Notiphila, 136 Volucella, 26 Wiedemannia, 31 Xanthochlorus, 32 Xarnuta, 50 Xenomorpha, 17 Xestomyza, 24 Xiphocerus, 23 Xylophagide, 3, 4, 15 Xylophagina, 16 Xylophagus, 15, 16 Xylota, 26 Xyphandrium, 32 Xyphosia, 49 Zodion, 27, 28 Zygoneura, 7, 177 220 ADDITIONS AND CORRECTIONS. ADDITIONS AND CORRECTIONS:.! Page 2, line 2 from the bottom, for of the Bibionide read of some Bibio- nide. (Lorw.) Page 4, lines 2 and 5 from top, for Stratiomydx read Stratiomyid. “« 5, line 9 from the bottom should read thus: South. Corethra is repre- sented in N. A. by C. punctipennis Say. (LoEw.) Page 6, line 6 from top, for Culiocides read Culicoides. “ 12, “ 9 from bottom, strike out the first and. “ 16, “ 4 from top, for Therevide read Thereuidz. come Goe comics tf for ending read end. “18, “ 18 from bottom, Pachygastrina should be in small capitals. “ 21, “ 15 from top, for Hxelasis read Exetasis. “ 21, “ 9 from bottom, the word varying does not express exactly the intended meaning, which was that of the German words geschweift, geschwungen. (Loew.) I find, in Say’s Terminology, this structure ex- pressed by the words repand, wavy, which means with alternate segments of circles and intervening angles.—O. 8. Page 22, line 11 from top ; same remark. bo D Aas es ED fe for Philodicus read Philonicus. 25, “ 11 from bottom, for Usio read*Usia. EO lO) Z for Pleas read Ploas. Ee Danse Danae) oe for Autonia read Antonia. “ 26, “ 23 from top, for Brachipalpus read Brachypalpus. “ 27, “ 9 from bottom, for Stratiomydze read Stratiomyide. Ge Diligent 28 « for Dolichopide read Dolichopodide. ce spac cnetley se for Stachinia read Stachynia. “ 28, “ 11 from top, for Newrophocerus read Nephrocerus. “« 36, “ 9 from bottom, for Jess read more. (LoEw.) “« 37, “ 18 from top, for Schoenomyza read Blepharoptera. (Lozw.) “* 50, lines 16 and 17 from top, for the words and for crowding them read while the rest remain crowded, etc. (Lozw.) Page 64, lines 3 and 5 from top, for curvature read concavity. “ 70, Tryp. unicolor ; add Cuba to its habitat. (Lorw.) “© 74, line 7 from top, for Cederli read Cederh. er Cee degree “« for exceeds read reaches into. (LoEw.) 1 Many of the corrections have been communicated by Mr. Loew, to whom the signatures were sent; his name, however, has been mentioned after those only which are not readily understood, but require an especial authority.—O. 8. FURTHER ADDITIONS AND CORRECTIONS. oe 11, line 4 from bottom, after the word together add whiplash-shaped. tt ed ss for second read jirst. 11, bottom line, for jirst longitudinal read auxiliary. 38, line 17 from bottom, for short read long. 63, lines 17 and 18 from bottom, for seam read margin. 111, line 4 from top, after the word perpendicular add Hab. Middle States. (Osten-Sacken.) ahi vill Latent BOON TANA WR HART IES TTS = a a a cra “ahs Ge 'Trape i oh! 3 te age jeer &? ‘wat ‘ . hari Dll ores yal pe z hE idl Bip Diet | Woah} Gb aad, Vel eae “aiil regsnit eh firesa Hols Vaca? (ol tk ee ; ceaviak tnd weg TOI SiGe enérsa ai raya | hott. Bhan iw aly cd Gye wad) 1edkh, yeal shen’ i aut. ed he Crees = ‘ ADDITIONS AND CORRECTIONS. 221 Page 84, Tryp. solaris; Wiedemann’s and Winthem’s collections possess this species from Brazil. (Lorw.) Page 94. Note to Tryp. comma.—One of my specimens from Maryland was compared by Mr. Loew with Wiedemann’s original and found identical. The latter isa very pale specimen. It seems, therefore, that the elon- gated hyaline spot at the tip of the sixth longitudinal vein is of normal occurrence in this species.—O. S. Page 115, line 8 from top, for femora read femora. « 135, ‘“ 6 from bottom, for the words in brackets put of the cinereous thorax. (LoEW.) Page 140, line 5 from top, for terminal read antennal. (LoEw.) oe 42) 1D “¢ for steel-colored read stcel-blue. (Lozw.) peeer4d. * 5 ce for knob read knobs. ptbo, S12 “for Philhygria read Philygria. Pages 174,175. In figures 1-7, the third longitudinal vein is made too strong. Its fork especially is very delicate, sometimes hardly visible in nature, so that the difference between the wings represented on figures 3 and 4 (Colpodia and Epidosis), the one with, the other without, fork, is not at all so striking as appears in the wood-cuts.—O. 8. In the Index, Autonia should be read Antonia, and removed to its proper place accordingly, and Blepharoptera and Philonicus are to be added; and, on page 208, the word destructor (Cecidomyia) should be removed to the left, so as to be in the same line with the other specific names. Be’ : W's s st : ae F + = . ae = * ; - . ‘i ‘ ‘ - . ~ - t « } » ’ « " A aa ’ Y , 4 ‘ ; ah ane 4 ‘ } } i ¥ * ‘ s - . id ’ m a re { : . ~ : ' p * e ag ~ + ’ yo : | ' * e + ; ‘ 7 ‘ ' i ' x > ’ ‘ : ° * - - * ¢ % > Tay 1 Fh Lvero del Hacerstidbar $1 \ i h SMITHSONIAN MISCELLANEOUS COLLECTIONS, —___— 171 ——____ MONOGRAPHS OF THE iE AP ae a A NORTH AMERICA. PREPARED FOR THE SMITHSONIAN INSTITUTION BY Hash OW. PART It. EDITED BY R. OSTEN SACKEN. WASHINGTON: SMITHSONIAN INSTITUTION. JANUARY, 1864, ADVERTISEMENT. THE present publication is the second part of a work on North American Diptera in process of preparation by Dr. H. Loew, of Meseritz, Prussia, undertaken at the especial request of the Smithsonian Institution. The materials have been derived prin- cipally from the collection of Baron R. Osten Sacken, Consul- General of Russia in New York, kindly intrusted to the author for examination. The work will appear in monographs of genera and families, sufficient materials being on hand for illustrating particular groups only, without relation to their systematic sequence. The Institution is under obligations to Baron Osten Sacken for superintending the translation of the work from the German manu- script, and editing it, as well as for correcting the proof-sheets. JOSEPH HENRY, Secretary 8. J. SMITHSONIAN INSTITUTION, Wasuineton, January, 1864. PHILADELPHIA: COLLINS, PRINTER. PREFACE. In the present work I have attempted to give a Monograph of the North American Dolichopodide. The geographical area em- braced in it, as well as in my former Monographs on North Ameri- can Diptera, is the same which has been adopted in Baron Osten- Sacken’s Catalogue, comprising Mexico and Cuba. I readily acknowledge that by adopting such a wide area for the North American fauna, we introduce many species which, properly speaking, belong to a more southern fauna. But I was induced to adopt this course as much by the circumstance that I possessed many interesting species from Mexico and Cuba, as by the advan- tage of conforming to the plan of the Catalogue of Osten-Sacken, and thus affording a general view of the fauna of a larger extent of country. As the order of Diptera is remarkable for the wide geographical range of the species, and as, for this reason, the limitation of local faunas is more indefinite here than in most other orders, the adoption of this somewhat arbitrary limitation of the North American entomological area cannot present any- thing objectionable. For the greatest part of the materials on which my work is based, I am indebted to the liberal and disinterested assistance of my esteemed friend Baron Osten-Sacken. Some very interesting species were communicated to me by Mr. Le Baron, of Illinois. The greater number of the species from Sitka was collected by Mr. Sahlberg, and communicated to me for description by Pro- fessor Maeklin in Helsingfors; some species of the same region are in the Museum of Berlin, and were obtained, if I am not mistaken, also from Mr. Sahlberg. ‘The study of the types of Wiedemann’s Collection, very liberally lent to me for examination ( iii ) iv PREFACE. by the Directors of the Hofnaturalien Kabinet in Vienna, afforded me information of the most valuable character. ; Although the materials thus put at my disposal can be called abundant, they did not by far reach the extent which I could desire for the preparation of such a monograph. I hope, how- ever, that new supplies will enable me soon to attempt a renewed and more thorough work on the same subject. I have to thank most cordially all those who have contributed by their collections towards the completion of this monograph, and at the same time I earnestly request all North American collectors who take any interest in the order of Diptera to favor me by similar communica- tions. They can reach me either through the medium of the Smithsonian Institution or through Baron Osten-Sacken. With regard to the systematic distribution, I have continued to build upon the foundation first laid by Mr. Haliday in his admira- ble paper on Dolichopodide, contained in Walker’s Diptera Britannica, and later developed by me in the seventh part of my ““ Neue Beitraege.” To the genera, adopted and defined in those papers, I have added afterwards the genera Plagioneurus and Lyroneurus, based upon North American species. (Conf. Wien. Entom. Monatsschr. 1857, p. 37.) In the eighth fascicle of my “Neue Beitraege,” which was a prodrome to the present work, I have further added the genera Pelastoneurus and Diostracus ; the first embraces some species which formed previously a sharply limited and well characterized group within the genus Gymmnop- ternus; the latter was established for a species which, by its general habitus, reminds equally of Thinophilus and Aphrosylus, but is distinguished from both by the presence of distinct hairs on the upper side of the first joint of the antenne. In the present publication I have added the new genus Paraclius, which combines the neuration of the wings of Pelastoneurus with some characters of Gymnopternus and at the same time is too distinct from the species of the latter genus, to remain united with it. Thus the number of genera, the usefulness or necessity of which -I at present recognize, amounts to forty-three. After a general introduction, I give a table for their determination, and then cha- racterize them in detail at the proper place. It will hardly be necessary for me here to attempt to correct the misapprehension PREFACE. Vv that the characters used for the construction of the table are at the same time the most important generic characters; far from such being the case, I have, but only in a few rare instances, tried to facilitate the discrimination of genera by preferring to use charac- ters applicable only to North American species (for instance in the separation of Gymnopternus from the genera immediately following it). The merit of the adopted distribution in genera has been tested and proved by the circumstance, that all the newly discovered species very easily found their proper place in it. Of course, all the genera cannot be considered as equally well established. Above all others, the distribution of the smaller species, for the most part neglected by collectors, as well as difficult to examine, still offers many obscure points. This is especially meant for the proper separation of the genera Chrysotus and Diaphorus. To escape the difficulty of defining the proper position of some North American species, showing the characters of both genera, I have been obliged to draw the line between the two in a somewhat different manner. The relation of the genus Hercostomus to Gymnopternus is likewise not very clear. A continued study of the structure of the known species and the discovery of new ones, will gradually remove this uncertainty and develop the systematic arrangement, so as to keep pace with such an increase of know- ledge. I think, however, that I can give in general the positive assurance, that the location of the species described by me is a natural and not a forced one; the only exception is Synarthrus barbatus, in which the thumb-like projection of the second anten- nal joint upon the inside of the third is much smaller than in the © other species of this genus. I possess this species only in a single, not well preserved specimen. As it can hardly be looked for in any other genus but this, I have deemed it more expedient to locate it provisionally here, than to found upon it a new, perhaps not justifiable genus. I have taken pains to elucidate conscientiously the rather con- siderable number of species published by former authors. Un- fortunately, most of these species were described without any regard to the most essential generic and specific characters, so that only in a very few cases have I been able to identify them. I have preferred not to use specific names the identification of which vi PREFACE, was not quite certain, as this would only have increased the con- fusion. If the identity of one or the other of the species published by me, with a previously described one, should be satisfactorily proved, I will always be ready to grant to the older name the priority over mine. H. LOEW. Mesertrz, July 1, 1862. Remarks.—I have a few words to add respecting the translation of this work, which was done under my care. The terminology used has throughout been that adopted in the first volume of these ‘“‘ Monographs.” The term antennal bristle alone has been replaced by the shorter one, arista, used by English writers. It will perhaps not be amiss also to explain the sense of the terms fore and hind and their difference from anterior and posterior when applied to the feet or parts of the feet. By fore feet (cox, femora, tibicze and tarsi), corresponding to the German vorderste Beine and the Latin pedes antici, is meant the jirst pair of feet (or coxe, etc.). By anterior feet (corresponding to vorderen Beine, pedes anteriores), the two first pairs are to be understood. In this case, however, in order to avoid all possible misunderstanding, Mr. Loew has almost always used the expression “‘ the four anterior fect,’ which was retained in the translation. The same rule applies to hind (hinterste, postici) as indicating the last pair, and posterior (hintere, posteriores) meaning the two last pairs. OSTEN SACKEN. TABLE OF CONTENTS. VI. QN THE NORTH AMERICAN DOLICHOPODIDA. PAGE Preface . : . : ; : : g : b obi Introduction . ; : ; : : ¢ 5 : . : i Table for the determination of the Genera : : ' : se Table for the systematic arrangement of the Genera : o- 14 PAGE PAGE Gen. I. HyGroceLEuTHUs. Sali 24, bifractus Zw. &.Q . 58 1. latipes Zw. %.2 sy ald 25. vittatus lw. 5 . oo 26. cuprinus Wied. §.9. 55 = Gen. II. Doticnopvs : > He8 27. longipennisZw.%.9 . 57 i. gratus Lows 518 - aac 28. hastatus, nov. sp. 3.9 59 2. laticornis Zw. % . oo eed 29. plumipes Scop. 3.9 . 60 3. setifer Zw. § .« - 80 30. fulvipes Zw. % . oe 61 4. albiciliatus Lw. 9 oo 31. sexarticulatus, n.s. 4 62 5. xanthocnemus,n.s.%.Q? 31 32. ruficornis Lw. % . e ( eé6s 6. tetricus, nov. sp. 4.9 33 33. scapularis Lw.3.9 . 64 7. acuminatus/w.%.9. 34 34, funditor Zw. %.9 . 66 . ovatus Lw. 5. . - 30 35. chrysostomus Lw. % . 67 . pachycnemus Lw. %.9 35 36. preustus Lw. 4 . « 68 » Oo CO oo wor 10. brevipennis Meig. %.9 37 37. comatus Zw. %.9 . 69 11. longimanus lw. %.9. 38 38. scoparius Lw. % 70 12. brevimavus lw. % . 39 39. discifer Stann. 4.9 71 13. socius Lw. % - 40 40. lobatus Lw. % 72 14. mundus, noy. sp. %.Q 41 41. setosus Lw. % 73 15. subciliatus, nov. sp. % 42 42. incisuralis Zw. %.9 74 16. splendidus Lw. % - 44 17. batillifer Zw. %-9 . 45) Gen. III. Gymyoprernvs . 75 18. eudactylus lw. 4.9 . 46 1. flavus Zw. $.9. 80 19. tonsus /w. §.2. ~ 47] 2. subulatus Lw. % 80 20. tener Zw. 4, : 5 ehh 3. scotias Lw. 4.9 eens 21. variabilis Zw. $.9 . 50 4. barbatulus Zw. $.9 . 22. luteipennis Lw. % =) ppl 5. tristis, nov. sp. 3.9 . 8 23. ramifer Zw. %.Q obo 6. exilis Zw. 4, i 84 ( vii ) viii TABLE OF CONTENTS. PAGE PAGE 7. spectabilis Zw. 9 . 85|Gen. XII. Diostracus . ele, 8. albiceps lw. 9 . oD 1. prasinus Zw. 5-9 . 121 9. subdilatatus Zw. § . 86 10. levigatus Lw. % . §87/| Gen. XIII. Anepsivs . 3 123 11. frequens Zw. 3-9 -. 88 12. lunifer Zw. 5 . - §89;Gen. XIV. ARcrRa : e128 13. fimbriatus Lw. % 5 tly) 1. albicans Lw. 4.9 qu lets 14. despicatus Lw. % oO 2. nigripes, nov. sp. § . 127 15. difficilis Zw. 5 . ao 3. albiventris, nov. sp. % 128 16. nigribarbus Zw. Q . 91 4. minuta lw. 5 . 5 Ue, 17. parvicornis Zw. § . 92 5. calcitrans Lw. % - 130 18. opacus lw. § .- es 93,) 6. calceata Iw. 9 . > LSE 19. politus Zw. Q . . 94 7. cylindrica, nov. sp. 4 . 132 20. debilis Zw. 5.9 oe 21. crassicauda Lw.%.9- 95) Gen. XV. Synrormon . . 133 22. minutus lw. % .- one Vo0H) 23. ventralis Lw. % . - 97 Gen. XVI. SynaRTHRUS . . 134 1. palmaris, nov. sp. §-Q@ 135 Gen. IV. Paractius ie cae 9 2. cinereiventris Zw. Q . 137 1. arcuatus Lw. 2 . - 101 3. barbatus Lw. % . - 138 2. albonotatus, n.s. %.Q 102) Gen. XVII. SysrEenus A 5 139 Gen. V. PELASTONEURUS . 5 11053 Lv longicamda Lan..G) «) 10E) Go XVI Ruarmose ol ae tae 2. lugubris Zw. 9 . =) 0b 1. lugubre Zao. 99"), bo at 3. letus Lw. % > - 106 4. vagans Lw. 4.9 on LOT 5. cognatus Lw. 2 . ~ 109 Gen. XIX. XIPHANDRIUM - 141 1o9 | Gen. XX. Porpuyrops . . 148 . melampus lw. %.9 . 144 . nigricoxa Lw. 9° . 145 . fumipennis Zw. Q . 146 . rotundiceps Zw. % . 146 Gen. VI. TachyrREcHUS . I. moechustizos Om a0 110 2. vorax Lw. 5.9 . ee le 3. angustipennis Zw. 4 . 113 Wo be Gen. VII. OrtHocHILE . ae 4 Gen. XXI. Smiziotus 5 «147 Gen. VIII. Sypistrroma . elas Gen. XXII. APHROSYLUS . - 148 Gen. IX. Hercostomus . oP lellG 1. unicolor, nov. sp. 4 . 117) Gen. XXIII. Taropnitus - 148 Gen. X. Hypopnyrius . - 118|Gen. XXIV. Propes : - 149 Gen. XI. Haurericervus . - 119|)Gen. XXV. Nematorrocrus . 150 TABLE OF CONTENTS. ix PAGE PAGE Gen. XXVI. Leucosrona - 151/Gen. XXXV. Liancatus . s» 198 1. cingulata Lw. % « 152 1. genualis Zw. %.9 « 199 Gen. XXVII. Evrarsus . lips Gen. XXXVI. Scenius . - 200 1. eques, nov. sp. 4 - 154 1. exustus Walk. 4.9 . 202 ee SOV Uclenounsi) olb6 |. 0, — 1S manus ate) oe 1. opacus Lu. % eerie 3. avidus, nov. sp. % . 207 2. mundus Zw. 3.9 . 161 4. filifer, nov. sp. % . 209 3. spectabilis Zw. % - 162 4. sodalis Lw. %.9 . 163| Gen. XXXVII. Hypropoorus . 211 5. lamellatus, nov. sp. % 165 1. innotatus, nov.sp.$.2 212 6. leucostomus Zw. 4.9 166 2. pirataZw. OQ . - 214 7. interruptus Zw. 5 . 168 3. parvus lw. % . 216 eS eS - 169) Gen. XXXVII. Acuancus . 217 1. cerulescens Lw. % . 170 Gen. XXX. Curysorvs . | 17) | Gen. XXXIX. MepEreERvs - 218 1. cornutus, nov. sp. % . 174 1. nigripesLw. 2. «218 2. longimanus Zw. % 175 2. veles Lw. % ; » 219 3. validus Zw. 9 . kl 4. obliquus Zw. 4.9 . 176) Gen. XL. Curysormus . . 220 5. affinis Zw. %.9 . eye 1. pusio Lw. 2 . . 221 6. vividus, nov. sp. %. 178 2. delicatus Lw. 2 . - 222 7. costalis Lw. %.9 elo 8. subcostatus, nov. sp. % 181|Gen. XLI. Xanrwocnnorus . 223 © . discolor Lw. 4.9? 3 Be 1. helvinus Lw. 2 . . 224 10. auratus Zw. 9 . « 183 11. pallipes Zw. 4.9 . 183|Gen. XLII. Savcrorus 224 12. picticornis, nov. sp. % 184 . dimidiatus Lw. % a 225 99, . rubellus Zw. 2 . - 226 . superbiens Lw. %.9 . 227 . tenuis, nov. sp. ? - 228 Gen. XXXI. TrevcHopHoRuS . 185 Pond ee Gen. XXXII. Sympycnvs ~ ded op terHanAmOM,eD: b- 2 1ST Gen KIM. Peaoeus . 229 2. frontalis Iw. % . 2 >. ss diffusus Wied. 3 & Q . 235 3. lineatus Iw. 4.9 - 189 guttula Wied. %.9 . 237 4. nodatus Lw. %-2 » 4191 1. dimidiatus Lw. % - 243 Gen. XXXIII. Campsicnemus . 193 ee oh : i a Te birtipes La. Bo 2 a njotete PLAS 4 cpdtibulataaSay®ui@d 261 2. claudicans, n. s. §-Q 194 bu ahelesarus iit, eo meeeans Gen. XXXIV. Piacioneurus . 196 6. pilosus Zw. § » 256 1. univittatus Zw. Q . 196 7. jucundus Zw. §.9 . 258 X TABLE OF CONTENTS. PAGE §. ciliatus Zw. % . - 260 15. scintillans Zw. $.9 . 273 . 9. comatus lw. 5.9 . 262 16. pallens Wied. $.9 . 275 10. chrysoprasiusWk.%.Q 265 17. variegatus Lw. 2 e 278 11. scobinator Zw. %.Q . 268 18. bicolor Zw. 9 . - 280 12. caudatulus Lw. % eal 19. psittacinus Zw. %.9 . 281 13. calearatus Lw. % - 272 20. tener Iw. 5.9 . o 284 14. inermis lw. % . - 272 21. filipes Zw. 5% .« - 286 PAGE APPENDIX. Species described by previous authors, and not contained in this Monograph . : . . ° . 5 . 5 - 289 Fabricius, Systema Entomologie 289 | Macquart, Diptéres Exotiques . 297 Musca longicornis . - 289 Psilopus sipho : a) 2a radians. eee ' Fabricius, Entomologia systema- Chrysotus viridifemora . 298 LiCae ae. : A ZOD) Dolichopus heteroneurus. 299 Musca longicornis . - 289 Walker, Insecta Saundersiana. 300 Psilopus lepidus 4 . - 300 Medeterus exustus 9 . 300 viridiflos 9 . 301 Dolichopus bifrons 9 - 301 consors 9 . 302 contingens 9. 302 hebes 9? - 302 ineptus 9 . 303 maculipes 9 . 303 pulcher$.Q2. 304 varius 9 - 004 Say, Jour. Acad. Nat. Sc., Phil. 289 Dolichopus unifasciatus . 289 obscurus 7 290 femoratus . 290 Chrysotus nubilus . eo concinnarius . 291 abdominalis . 291 Medeterus lateralis . eeaoi punctipennis . 292 Dolichopus abdominalis . 292 Wiedemann, Aussereurop. Zwei- Walker, List of Dipt. Brit. Mus. 304 | fliigel. Insecten . . 292 Psilopus delicatus ? . 3804 Psilopus macula. ~ 292 gemmifer % e 305 Sayi . : - 293 chrysoprasi - 305 longicornis - 294 suavium . - 306 caudatus . . 294 amatus §.? . 306 virgo 5 - 295 inficitus . . 307 femoratus . - 295 nigrofemoratus . 307 mundus . a 2296 albicoxa 4.9 . 307 Dolichopus obscurus Say. 296 | Chrysotus incertus : - 308 Porphyrops pilosicornis . 2) 008 Macquart, Suites & Buffon, Dip- Medeterus glaber . . - 309 teres. : ; e200 chrysologus 9? - 309 q Psilopus radians. - 297 | alboflorens 9 - 310 TABLE OF CONTENTS. PAGE Dolichopus affinis 4.9? . - 310) Dolichopus terminatus 9 cuprinus Wied. 311 sequax : ° lamellipes 4.2 311 soccatus ciliatus §.9 312 remotus adjacens 9 . 312 irrasus . coercens % . 312 | Orthochile derempta finitus % . 313 distractus - 3813| Walker, Trans. Entom. Soc. . discesus 9 314 Psilopus ungulivena contiguus 4 314 solidus exclusus ? . - ol4 peractus confinis ? - 315 hereticus . conterminus % 315 permodicus separatus 9 316 SUPPLEMENT. I. General remarks on the Dolichopodide of North America . II. Description of some Species communicated after the volume had gone through the press Gen. II. Doicnorus 43. dorycerus Lw. % 44. splendidulus Lw. 4% 45. palestricus Lw. 4.9 46. melanocerus Lw. 4.9 47. quadrilamellatus Zw. 3-2 Gen. III. Gymyorrernvs 19. politus Iw. 4.9 24, pusillus Lw. 9 27. chaleochrus Lw. %.9 EXPLANATION OF THE PLATES 323 326 327 328 330 331 332 334 26. coxalis Zw. % . 27. meniscus Lw. 4.9 28. humilis Lw. 3.9 29. exiguus Lw. 9 Gen. V. PELASTONEURUS . ‘6. lamellatus Lw. 9 7. abbreviatus Lw. 5.9 8. alternans Zw. > . 334 | Gen. VI. Porpuyrops 335 5. longipes Lw. % REMARKS ON THE GENERIC CHARACTERS EXPLANATORY TO THE PLATES INDEX : - xi PAGE 316 317 317 317 318 318 319 31g 319 319 320 320 323 335 336 336 337 337 338 338 339 340 340 id iF ae ue a DIPTERA OF NORTH AMERICA. PART Ii. Vil: ON THE NORTH AMERICAN DOLICHOPODIDAE. LMP RODE DLO. THE Dolichopodidx are among those families of diptera which show but so few points of relationship to others that it is impos- sible to name any family of a particular affinity to them. § Hypopygium disengaged. 3 r Hypopygium more or less imbedded. 14 5 { First joint of the hind tarsi bristly. 4 First joint of the hind tarsi not bristly. 5 { Face descending as far as the inferior angle of the eye. 4) Gen. I. HyGRocEeLevTuvs. | Face not descending as far as the inferior angle of the eye. L Gen. II. DoxicHorvs. 5 | Palpi of the male unusually large. Gen. XII. Diosrracus. Palpi of the male small 6 { The last portion of the fourth longitudinal vein is parallel, or almost 6 so, to the third longitudinal vein. Gen. II]. GymnoprERNvs. The last portion of the fourth longitudinal vein is distinctly convergent towards the third longitudinal vein. 7 The end of the fourth longitudinal vein is abruptly, or at least steeply ” deflected anteriorly. 8 The end of the fourth longitudinal vein is only gradually deflected anteriorly. 9 Arista with the usual pubescence; the end of the fourth longitudinal vein, beyond the angular flexure, runs in a curve. Gen. IV. PARaActivs. Arista short-plumose ; the end of the fourth longitudinal vein, beyond the rounded flexure, runs in a straight line. Gen. V. PELASTONEURUS. The face reaches down to the inferior corner of the eye. ; Gen. VI. TacuytTrecuts. The face does not reach down to the inferior corner of the eye. 10 Proboscis and palpi very much prolonged. Gen. VII. Orrnocaite. Proboscis and palpi not prolonged. 11 Scutellum hairy. Gen. VIII. Sysistroma. Scutellum not hairy 12 Hypopygium sessile. Gen. IX. Hercostomus. 9 10 Tal 12 Hypopygium pedunculated. 13 Second antennal joint of usual shape. Gen. X. Hrpopny.uvs. Second antennal joint rucimentary. Gen. XI. HaALrericervs. co ee a ee oOo FF o-oo eo | 13 . 12 DIPTERA OF NORTH AMERICA. [PART aL: Abdomen of male laterally compressed. Gen. XIII. AnEPsius. t Abdomen of the male not compressed. . 15 { Second antennal joint of the usual transverse shape. Gen. XIV. ArGYRA. | Second antennal joint with a thumb-like projection over the inside of L the third. Gen. XV. Synrormon, ( Third antennal joint in both sexes, or at least in the male, prolonged, pointed, and with an apical arista. 17 16/ Third antennal joint short even in the male, and if it should be | somewhat prolonged, then neither pointed nor with an apical, but L at the utmost with a subapical arista. 23 Second antennal joint with a thumb-like projection over the inner ur! side of the third. Gen. XVI. SyNARTHRUS. Second antennal joint without a thumb-like projection, transverse. 18 { Posterior transverse vein distant from the margin of the wing; palpi 18 incumbent. 19 | Posterior transverse vein approximated to the margin of the wing; L palpi hanging down. Gen. XXII. ApHRosyLvs. 19 { Hypopygium pedunculated, free. Gen. XVII. Sysrenus. Hypopygium sessile, more or less imbedded. 20 20 { The male abdomen has five segments. Gen. XXI. Suruiorus. The male abdomen has six segments. 21 Third antennal joint prolonged also in the female. af Gen. XVIII, RuapuHirm. Third antennal joint of the female not prolonged. 22 {Third antennal joint of the male very much prolonged (small, less 99) hairy species). Gen. XIX. XIPHANDRIUM. | Third antennal joint of the male moderately prolonged (larger, more l hairy species). Gen. XX. PoRPHYROPS. 23 ‘ Fourth longitudinal vein forked. Gen. XLII. Psitorus. Fourth longitudinal vein simple. . 24 Upper side of the thorax convex behind. 25 24 Une side of the thorax behind with a somewhat concave depres- sion. 40 25 { Fifth longitudinal vein altogether wanting. Gen. TAROT ACHALCUS. Fifth longitudinal vein distinct. 26 ( Distance of the posterior transverse vein from the margin of the wing oi. equal to its own length or longer. 2 “| Distance of the posterior transverse vein to the margin of the wing shorter than its own length. 38 Posterior transverse vein unusually oblique. Gen. XXXIV. PLAGIONEURUS. Posterior transverse vein but little oblique. 28 Hypopygium distinctly bent under the venter. 29 Hypopygium not distinctly bent under the venter or entirely imbed- ded. 30 bo ~I Bes — --- TABLE FOR THE DETERMINATION OF THE GENERA. 13 { The face of both sexes very broad, not narrowed superiorly. Gen. XXII. Turyopuinos. The face of both sexes rather narrow, somewhat narrowed superiorly. Gen. XXIV. Proves. Outer appendages of the hypopygium long, filiform. Gen. XXV. NeMATOPROCTUS. Outer appendages of the hypopygium not long, nor filiform. 31 Third joint of the male antenne conspicuously large. 29 30 Third and fourth longitudinal veins parallel. Gen. XL. Curysorrmus. Male abdomen with six distinct segments, Gen. XLI. XAnrHocutorvs. Male abdomen with five distinct segments. Gen, XLII. Savucropvs. rc { | L a1 Gen. XXVI. Lrvcostona. Third joint of the male antennz small. 32 39 { Pulvilli of the male fore tarsi conspicuously enlarged. 33 Pulvilli of the male fore tarsi not, or very slightly, enlarged. 34 33 | Pulvilli of the male fore tarsi not prolonged. Gen. XXVII. Eurarsus. Pulvilli of the male fore tarsi prolonged. Gen. XXVIII. Drapnorus. 34 { Arista altogether or almost altogether apical. 35 Arista dorsal. 36 35 { Wings of considerable size (larger species). Gen. XXIX. LyroneEvrus. Wings of small size (smaller species). Gen. XXX. Curysorus. Feet of the male with isolated, strong, spine-like bristles. 36 | Gen. XXXI. TevcHopHorus. Feet of the sexes without isolated, strong, spine-like bristles. 37 37 if Face not narrowed above. Gen. XXXII. Sympycnvs. Face considerably narrowed above. Gen. XXXII. Campsicnemus. All femora slender, abdominal segments with bristles before the hind sa margin. Gen. XXXV. Lrancatus. Fore femora incrassated towards the basis. 39 39 | Fore tibiz with long thorns. Gen. XXXVI. ScELuus. Fore tibize with very short little thorns. Gen. XXXVII. Hypropnorvs. 40 { Arista apical, or at least subapical. 41 Arista distinctly dorsal. 42 Third and fourth longitudinal veins strongly convergent. “| Gen. XXXIX. MeEpDETERUS. 14 DIPTERA OF NORTH AMERICA. [PART II, SYSTEMATIC ARRANGEMENT OF THE GENERA. I. First joint of the antenne with hairs on its upper side. A. Hypopygium disengaged. A. Palpi of the male small. ‘ 1. First joint of the hind tarsi bristly. Gen. I. Mygroceleuthus. Gen. Il. Dolichopus. 2. First joint of the hind tarsi not bristly. a. Third and fourth longitudinal veins parallel or sub- parallel. Gen. II]. Gymmnopternus. b. Third and fourth longitudinal veins convergent. Gen. IV. Parachius. Gen. VIII. Sybistroma. Gen. V. Pelastomeurus. Gen. IX. Hercostomus. Gen. VI. TWachytrechus. Gen. X. Mypophyllus. Gen. VI. Orthochile. Gen. XI. Haltericerus. B. Palpi of the male conspicuously large. Gen. XII. Diostracus. B. Hypopygium more or less imbedded. Gen. XIII. Amepsius. Gen. XV. Syntormon. Gen. XIV. Argyra. II. First joint of the antenne entirely bare on its upper side. A. Third antennal joint in both sexes, or at least in the male, elon- gated, tapering in a point, with an apical arista. A. Posterior transverse vein distant from the margin of the wing, palpi incumbent. Gen. XVI. Synarthrus. Gen. XIX. Kiphandrium. Gen. XVII. Systemus. Gen. XX. Porphyrops. Gen. XVIII. Rhaphium. Gen. XXI. Smailiotus. B. Posterior transverse vein approximated to the margin of the wing; palpi hanging down. Gen. XXII. Aphrosylus. - SYSTEMATIC ARRANGEMENT OF THE GENERA. 15 B. Third antennal joint short even in the male, or if somewhat elon- gated, then neither pointed at tip nor with an apical, but, at the utmost, with a subapical arista. A. Fourth longitudinal vein simple. 1. Upper side of the thorax convex posteriorly. a. Fifth longitudinal vein distinct. a. Distance of the posterior transverse vein from the hind margin of the wing equal to its own length or longer. Gen. XXIII. Whinophilus. Gen. XXIX. Lyronmeurwus. Gen. XXIV. Peodes. Gen. XXX. Chrysotus. Gen. XXV. Nematoproctus.Gen. XXXI. Teuchophorus. Gen. XXVI. Leucostola. Gen. XXXII. Sympycnus. Gen. XXVIII. Eutarsus. Gen. XXXIIL Campsicnemus, Gen. XXVIII. Diaphorus. Gen. XXXIV. Plagioneurus. 8. Distance of the posterior transverse vein from the margin of wing shorter than its own length. Gen, XXXV. Liancalus. Gen. XXXVII. Hydrophorus. Gen. XXXVI. Scellus. b. Fifth longitudinal vein altogether wanting. Gen. XXXVIII. Achalcus. 2. Upper side of the thorax posteriorly with a flat, somewhat concave, declivity. Gen. XXXIX. Medeterus. Gen. XLI. Kanthochlorus. Gen. XL. Chrysotimus. Gen. XLII. Saucropus. s. Fourth longitudinal vein forked. Gen. XLII. Psilopus. a HYGROCELEUTHUS. 1T Gen. I. HYGROCELEUTHUS. ‘ The genera Hygroceleuthus and Dolichopus are the only ones which have spine-like bristles on the first joint of the hind tarsi, and this character helps to distinguish them most easily from all other Dolichopodide. They have also the following characters in common: first antennal joint beset with hairs above; third joint not prolonged; arista dorsal; hypopygium entirely disengaged ; its outer appendages proportionally large or moderately large, lamelliform. The difference between the two genera is to be found in the length of the face, which, in Hygroceleuthus, reaches down to the inferior corner of the eye, and which is shorter in Dolichopus. In the typical species of Hygroceleuthus the first, and sometimes also the second joints of the antenne are consider- ably longer than in Dolichopus. As on one side the European Hygroc. Diadema Hal. approaches Dolichopus by the structure of its antenne, so, on the other side, some species of Dolichopus, for instance, D. plumipes Scop., a species common to Europe and North America, are related to Hygroceleuthus by the somewhat greater length of their face. I know as yet only four species of Hygroceleuthus; of the three typical species, one inhabits northern and middle Europe; the second Siberia; the third North America. The fourth species of the genus is spread over all Europe. The name Hygroceleuthus (syeoxéaevSos, living in the wet) has been given to the genus on account of the species being found in moist localities. i. H. latipes Lorw. 4 and 9.—Aeneo-viridis, antennis rufis, ciliis oculorum inferioribus pallidis, tegularum ciliis nigris, tarsis intermediis maris compressis. Brassy green; antenne red; cilia of the inferior orbit pale; cilia of the tegule black; middle tarsi of the male compressed. Long. corp. 0.26. Long. al. 0.23. Syn. Hygroceleuthus latipes Lozw, Neue Beitr. VIII, 5. 2 18 DIPTERA OF NORTH AMERICA. [PART Ii. Green, shining. Antenne reddish-yellow, with a black supe- rior edge and with the tip of the third joint black; first joint nar- row and elongated. Face white, yellowish above, much broader in the 9 than in the ¢. Cilia of the inferior orbit pale. Fore cox, tip of the middle and hind coxe and feet yellow; tarsi black from the tip of the first joint; the first joint of the fore tarsi some- times altogether dusky; the root of the second joint of the hind tarsi, on the contrary, is pale. On the upper side of the middle tibie a bristle is conspicuous by its greater length; there are two bristles before the tip of the hind tibiz. Tegule with black cilia. Wings tinged with brownish; fourth longitudinal vein not broken ; hind transverse vein straight and steep. Four last joints of the middle tarsi compressed in the ¢, beset on the upper side with incumbent black hairs; the fifth joint much narrower than the pre- ceding ones. Costa with a stout swelling near the tip of the first longitudinal vein. Lamelle of the hypopygium of moderate size, white, bordered with black at the tip, jagged and fringed with black bristles. Hab. North Red River. (Kennicott.) Gen. Il. DOLICHOPUS. The principal characters of the genus Dolichopus, as it follows already from what has been said about it in the genus Hygro- celeuthus, are: the presence of hairs on the upper side of the first antennal joint, the shape of the third joint, which is hardly ever very much elongated, the dorsal position of the arista, the en- tirely disengaged hypopygium, the lamelliform shape of its rather large outer appendages and the presence of spine-like bristles on the first joint of the hind tarsi. The genus Dolichopus, established by Latreille already in 1796, is the oldest of the family. It comprised at that time all the Dolichopodidx, so that all the other genera have been gradually formed by the separation of some groups and by further subdivision of the latter. In the sense in which this genus was adopted by Wiedemann and Meigen, it still included the present genera Gym- nopternus, Paraclius, Pelastoneurus and Tachytrechus, besides some isolated species belonging to other genera, which had been erroneously located in it. (Such was the case, for instance, with D. adustus Wied., which belongs to Lyroneurus.) The defini- t 1 DOLICHOPUS. 19 tion of Dolichopus, in its present limited sense, was given by me in 1857. Still, even now, this is one of the largest genera of this family. Although possessing abundant and striking specific dif- ferences, its numerous species show at the same time so much agreement in their general organization, that a subdivision into smaller genera is impossible at present, and in future an attempt of that kind will require a great deal of caution. One is easily tempted here to establish generic groups founded upon characters of a purely specific value. The genus Rhagoneura, formed by Rondani, is due to a mistake of this kind. To found a new genus on D. ziczac, which species apparently requires it on account of some differences in the neuration and in the structure of the an- tenn, seems hardly worth while, as this is as yet the only species showing such differences. The geographical distribution of the genus Dolichopus cannot be inferred from the data found in older authors, as this genus con- tained at that time very heterogeneous elements. Neither can Mr. Walker’s superficial publications on exotic species be considered in this respect as a source of information, as it is impossible to tell from his descriptions which of his species belong to Dolichopus in the restricted sense. Those species from the southern hemis- phere, and from the southern parts of the northern, which I had occasion to examine at different times, proved not to belong to Dolichopus in that sense. Hence we may safely conclude that the genus Dolichopus, in the large majority of its species, belongs to the cold and temperate zones of the northern hemisphere ; it can, at least, be positively asserted that the number of species, in Europe as well as in America, goes on diminishing toward the South. The name of the genus (Soacxds, long, and mods, foot) has refe- rence to the length of the feet of its species. Thirty-one North American species of Dolichopus have been described by former authors; some of them, however, do not belong to this genus in the restricted sense adopted here. Of these species three have been described by Say, one by Zetterstedt, one by Macquart, and twenty-six by Walker. The descriptions given by Mr. Walker are, for the most part, very bad, and the worst are those published in the Diptera Saundersiana, as they con- tain only such characters as are common to all the species, or at least to entire groups, without paying the least attention to those 20 DIPTERA OF NORTH AMERICA. [PART If, marks which serve to distinguish one species from another. The eighteen descriptions contained in the List of Diptera of the British Museum mention at least occasionally such specific cha- racters, and may therefore contain some data for identification ; but their great defect is that Mr. Walker has not given a complete description of those peculiar marks which distinguish the males of many species, so that, from his silence about these marks, one can- not with safety conclude that they are really wanting. This accu- racy is absolutely necessary in order to make a description avail- able. Among the forty-one North American Dolichopodide now known to me, I recognize with certainty only @ single species already described before (besides the three species which North America has in common with Europe, D. plumipes Scop., D. brevipennis Meig., and D. discifer Stann.); it is the D. cuprinus Wied. (= cupreus Say). This striking result induces me to give a separate account of all the other species published by former authors, in the order of their publication. 1. obscurus Say. This species, also described by Wiedemann, evi- dently belongs to the genus Gymnopternus and will be discussed there. Wiedemann’s collection affords no light upon this species. It contains, it is true, two specimens of a Dolichopus marked obscurus, but this is no other than a species of Tachytrechus, from the Cape, described by Wiedemann himself under the name of obscenus. It is probable that Wiedemann named this species, as he was in the habit of doing, as soon as he received it in his collection, and that when he described it afterwards, he changed its name to obscanus, on account of the already existing obscurus Say, neglecting, at the same time, to change the etiquette in his collection. 2, abdominalis Say. The abdomen is said to be reddish. If Say means a reddish, non-metallic color, then it is a distinct species, entirely unknown to me, which will be easily recognizable even if it is no true Dolichopus, as may very probably be the case. If, how- ever, he means a metallic, coppery-red coloring, then the descrip- tion is too unmeaning to pronounce even about its belonging to Dolichopus in the restricted sense; as to the identification of the species, it is altogether out of question. 3. groenlandicus Zeit. A true Dolichopus with black as the prevailing color of its feet. It is not among the number of the species known to me. 4. heteroneurus Macy. is either a Pelastoneurus or a Paraclius. 5. bifrons Walk. Dipt. Saund. It may be inferred, from the peculiar coloring of the face of this species, that it is a Pelastoneurus, DOLICHOPUS. Dil although no mention is made of the peculiar course of the fourth longitudinal vein, which characterizes this genus. 6-9. consors, contingens, hebes, ineptus, all four described by Walker in the Dipt. Saund. from female specimens. The descrip- tions are so wretched that the identification is impossible. 10. maculipes Walk. Dipt. Saund. The spots on the tibize, mentioned by Walker, seem to indicate that this is a Pelastoneurus. But the peculiar course of the fourth longitudinal vein, the chief character of the genus, is again not mentioned. ll. pulcher Walk. Dipt. Saund. I take this to be a true Dolichopus, although the datum of the fourth longitudinal vein beyond its flexure not converging, but being parallel to the third, seems te in- dicate a Gymnopternus. It belongs to the species with black femora, but among the species of this description which I possess from North America, there is none to which Mr. Walker’s description of the fourth longitudinal vein is applicable. 12. varius Walk. Dipt. Saund. A very distinct species on account of its spotted wings and which will he easily recognizable even if, as it seems probable, it does not belong to the genus Dolichopus. 13. affinis Walk. This and the following species have been described by Mr. Walker in the List of Diptera, etc. All belong very probably to the genus Dolichopus, and to the subdivision with yellow feet, except the cases which I have expressly mentioned below. It-is not said whether the tegule of D. affinis are ciliated with black or pale hairs. If the latter is the case, and if, as it appears from Mr. Walker’s data, the hind tarsi are altogether black, my D. splendidus might alone be taken in consideration ; but it is hardly possible that it should be this species, as Mr. Walker’s description of the color- ing does not apply to it, and as the hind femora of the % of D. affinis Walk. are ciliated with only a few hairs, whereas in D. splendidus these hairs are very numerous. If D. affinis has black cilia on the tegule, then D. discifer and lobatus could be thought of, but the hind femora of their males are entirely destitute of bristles, so that the description of D. affinis cannot be applied to either of them. 14. lamellipes Walk. It has the inferior orbit ciliated with black. Among the North American species of Dolichopus with pale-colored feet D. pachycnemus and D. brevipennis alone partake of this cha- racter. The other data of Mr. Walker do not apply at all to these species, as neither of them has a white face, the first antennal joint red and the third joint very long. 15. ciliatus Walk. Very poorly characterized. I suppose that the cilia of the inferior orbit are pale. If the tegule are likewise ciliated with pale hairs, then D. variabilis and D. luteipennis might be taken in consideration. But D. variabilis has no golden-yellow face, its fore tarsi are not “dark tawny,” but always black from the tip of an bo bo DIPTERA OF NORTH AMERICA. [PART II. the first joint; besides, its male has ciliated hind femora, which Mr. Walker does not ascribe to his species. LD. luteipennis has a white face and the last joint of its fore tarsi black; its wings are yellowish and not gyay, the veins are luteous and not black; finally the hind femora of its mate are also ciliated. If the tegule of D. ciliatus are ciliated with black, then we might perhaps identify it with D. vitiatus; but the size of the latter is too large to admit of this identification, and its face, instead of heing golden-yellow, is | whitish; its fore tarsi are not dark tawny but always black from the tip of the third joint. | 16. adjacens Walk. Very poorly described from a female specimen, so that it would be entirely useless to attempt its identification. 17. coercens Walk. Mr. Walker says that the coxe are blackish-green towards the basis. This character, combined with the others which are given, excludes at once all the species with the tegule fringed with black, which are known to me. If the tegule are fringed with yellow, this species might be taken for D. longimanus; but the last joint of the fore tarsi of the latter is only moderately enlarged, assuming the shape of a very small lamella, and its hind tarsi are colored black in a rather striking manner from the very root of the first joint; whereas Mr. Walker says that in his species they are pitch brown towards the end. Under such circumstances the des- cription of D. coercens Walk. cannot possibly be referred to D. longimanus. 18. finitus Walk. If the tegule are fringed with pale, then, among the species known to me, D. longimanus, D. splendidus and D. batillifer have to be taken in consideration. The face of D. longimanus is not whitish, but pale ochre-yellowish in the % and yellowish gray in the 9: the cilia of the inferior orbit are not white, but yellowish, and the hind tarsi are not pale at the basis, as in D. finitus, but en- tirely black. D. splendidus is distinguished from D. jinitus by its hind tarsi, which are not pale at the base, and by the ciliated hind femora of the male. The face of D. batillifer is not white; the hind femora of the male are ciliated and the hind tibie incrassated in a very striking manner; therefore this species is also distinct from D. finitus. If the cilia of the tegule of D. finitus are black, then we might compare D. discifer and lobatus with it. The hind tarsi of D. discifer are not pale at the base, and the first joint of the an- tenne is tinged with black only on its upper edge, so that it is hardly probable that Mr. Walker should have overlooked its striking red coloring. This also excludes this species from the identification with D. jfinitus. The hind tarsi of D, lobatus likewise are not pale at the base, and the first joint of the antenne is red, and only somewhat dusky on its upper edge, so that it has also to be considered as different from D. finitus. DOLICHOPUS. 23 19. distractus Walk. Walker says nothing about the sex of the de- scribed specimen; it seems to have beena female. The descrip- tion does not afford any data for even an approximative identifica- tion. 20. discessus Walk. Mr. Walker gives a very unsatisfactory descrip- tion of a female. It is a rather surprising datum that the apper side of the thorax has two longitudinal coppery-red stripes, whereas all the species known to me, and marked with stripes of this color, have always three, that is, a narrow intermediate one, and two broad lateral ones. This character might perhaps serve as a clue for identification. 21. contiguus Walk. Nothing is said about the color of the cilia of the inferior orbit. If they are black, then it is certain that D. contiguus is not among the species from North America known to me. If they are pale, it still remains to be known of what color are the cilia of the tegule about which Mr. Walker is also silent. Sup- posing that they are pale, then D. splendidus would have to be taken in consideration; but its male has fringed hind femora and » cannot therefore be identified with D. contiquus. If the cilia of the tegule are black then we would have to compare D. discifer and lobatus. But the last joint of the fore tarsi of D. diseifer is not at all much enlarged, and forms only a small pallet; therefore it can- not be taken for D. contiguus. D.lobatus has a very much enlarged last joint of the male fore tarsi, but as the first joint of the antenne is red and only slightly dusky on the upper edge, and as the lamelle of the hypopygium have a broad black margin, whereas Walker describes the lamelle of D. contiguus simply as whitish, as the wings of D. /obatus, in the male sex, are distinguished by their peculiar shape, which is not mentioned in the description of D. con- tiguus, on account of all this we cannot consider these species as being identical. 22. exclusus Walk. Very poorly described from a female, so that all effort to identify the species must remain fruitless. 23. confinis Wa/k. The same may be said of this species. 24. conterminus Walk. Mr. Walker does not mention the color of the cilia on the tegule, and this renders the identification impossible. If they are black, then the species is not among those known to me. D. discifer and D. lobatus are here again the species with which Mr. Walker’s description agrees in most particulars, but both are easily distinguished by the absence of fringe on the hind femora of the male. If, on the contrary, the cilia of the tegule of D. conterminus are pale, then D. splendidus might possibly be identified with it, although it must be admitted that the coloring of this species as well as some other characters, somewhat disagree with Mr. Walker’s description. 24 DIPTERA OF NORTH AMERICA. [PART II. 25. separatus Walk. Bad description of a female, rendering identifica- tion impossible. 26. terminatus Walk. Also a female described. The only species to which it may possibly be referred is D. chrysostomus, and I would have no doubt about it if I knew that the cilia of the tegule of D. terminatus are black. But Mr. Walker’s description is silent about this; neither does it mention the very striking black incisures which the abdomen of D. chrysostomus shows; finally, the third joint of the antenne of the latter species is pointed at the tip. Con- sidering all this, it would be premature to assume the identity of these species. Those who, in the determination of the species, rely upou possibilities and vague reasonings, would perhaps do so. And doubtless it is that the adoption of this synonymy would be more reliable than that of any other of Walker’s species with one of those described by me. 27. sequax Walk. Mr. Walker says that this species has small tufts of black hairs at the basis of the middle tibiz. He does not mention, however, whether this peculiarity is to be found in the male alone, or in both sexes: At all events this is a very unusual distinction among the species of Dolichopide, which will render the identifica- tion easy. This species is not among those described by me. 28. soccatus Walk. The sex of the described specimen is not men- tioned; it seems to have been a female. The description is too in- complete to allow recognition. 29. remotus Walk. Description of a male with plain tarsi. The cha- racters given allow a comparison merely with D. incisuralis, the male of which, however, has fringed hind femora and cannot there- fore be identical with D. remotus. 30. D. irrasus Walk. This is a small species, distinguished by its dark blue color and unusually short abdomen, which is certainly not to be found among the species known to me. It seems probable that it is no true Dolighopus at all. The slender result of the foregoing discussion of Mr. Walker’s species is, that there are only two among them which, with cer- tain problematical admissions, may perhaps be identified with species described by me, namely, D. conterminus Walk. with my D. splendidus, and D. terminatus with D. chrysostomus. To facilitate the determination of the species I give, first, a dichotomic table. I found it impossible to bring it down to the single species without making use of characters peculiar to the DOLICHOPUS. 25 male sex only. The systematic arrangement which follows the dichotomie table subdivides the genus in groups, founded upon easily perceptible characters common to both sexes. I think it will be useful to retain these groups, or, at least, the principal among them. Table for determining the Species. 1 | Prevailing color of the feet black. 2 Prevailing color of the feet yellowish. 9 » § Cilia of the inferior orbit black. 3 7 t Cilia of the inferior orbit whitish. 4 aa ochre yellowish. 1 gratus Lw. Face silvery white. 2 laticornis Lw. 4 { First joint of hind tarsi with numerous bristles. 3 setifer Lw. First joint of hind tarsi with but few bristles. 5 Hind tibiz black only at the tip. 6 t Hind tibiew quite black. 7 (The black at the tip of the hind tibie rather extended and not very 6 sharply limited. 4 albiciliatus Lw. | The black at the tip of the hind tibize but little extended and sharply { limited. 5 xanthocnemus, n. sp. ” { A considerable extent of the tip of the femora yellow. 6 tetricus, n. sp. The extreme tip of the femora only somewhat yellow. 8 8 { Lamelle of the hypopygium pointed. 7 acuminatus Lw. Lamelle of the hypopygium rounded ovate. 8 ovatus Lw. 9 | Cilia of the inferior orbit black. 10 Cilia of the inferior orbit pale. . 11 10 { Fore coxe blackish. 9 pachycnemus Lw. Fore cox yellow. 10 brevipennis Meig. 1l { Tegule with pale cilia. : 12 Tegule with black cilia. 23 ( Antenne black, at the utmost, the first joint almost red. 13 Antenne altogether, or at least their larger portion, yellowish red. 21 13 ( Fore coxe dark beyond the middle. 11 longimanus lw. U Fore coxe pale. 14 § Tip of the hind tibie decidedly blackish. 15 (Tip of the hind tibiz not or very slightly infuscated. 16 Fore tarsi only ferruginous-brownish. 12 brevimanus Lw. Fore tarsi blackened from the tip of the first joint. 13 socius Lw. { Hind tarsi entirely black. 17 Basis of the hind tarsi pale to a considerable extent. 19 - { Hind femora of the male not ciliated. 14 nudus, n. sp. Hind femora of the male ciliated. 18 26 DIPTERA OF NORTH AMERICA. [PART ET. ‘ Hind femora of the male with sparse and rather short cilia. 15 subciliatus, n. sp. | | 184 Hind femora of the male with very long and dense cilia. | 16 splendidus lw. Only the tast joint of the fore tarsi of the male is enlarged. 19 17 batillifer Lw. The two last joints of the fore tarsi of the male are enlarged. 20 20 { Hind femora of the male ciliated. 18 eudactylus Lw. Hind femora of the male not ciliated. 19 tonsus Lw. 21 Last joint of the fore tarsi of the male enlarged. 20 tener Lw. Fore tarsi of the male plain. 22 22 Wings hyaline with a grayish tinge. 21 variabilis Lw. Wings hyaline with a yellowish tinge. 22 luteipennis Lw. Fourth longitudinal vein broken. 24 Fourth longitudinal vein not broken. 28 Antenne black. 23 ramifer Lw. Antenne yellowish-red. 25 Fourth longitudinal vein broken twice at right angles. 24 bifractus/w. 25 jth inferior angle of the fourth longitudinal vein sharp, the superior one rounded. 26 Tarsi of the male plain. 25 vittatus Lw. Tarsi of the male enlarged at the tip. 27 yy § Hind femora of the male ciliated. 26 cuprinus Wired. Hind femora of the male not ciliated. 27 longipennis /w. Antenne red, at the utmost the third joint somewhat or altogether 28| blackened at the tip. 29 Antenne black, at the utmost the first joint partly red. 36 Humeral callosity of the same color with the upper side of the thorax. 29 30 Humeral callosity yellowish. 35 30 { Arista much enlarged towards the tip in the male. 28 hastatus, n. sp. Arista of the male not enlarged. 31 31 { Last joint of the fore tarsi not enlarged in the male. 32 Last joint of the fore tarsi enlarged in the male. 33 32 { First joint of the male middle tarsi feathered. 29 plumipes Scop. First joint of the male middle tarsi not feathered. 30 fulvipes Lw. Last joint of the male fore tarsi with a lamelliform appendage. ; ss] 31 sexarticulatus, n. sp. Last joint of the male fore tarsi without lamelliform appendage. 34 34 { Last joint of the male fore tarsi small. 32 ruficornis Lw. Last joint of the male fore tarsi large. (40 lobatus Lw.) 35 { Fore tarsi of the male plain. 33 scapularis lw. Fore tarsi of the male enlarged at the tip. 34 funditor Lw. 3¢ { Face dark golden-yellow. . 35 chrysostomus Lw. {Face not golden-yellow. 37 DOLICHOPUS. QT { Tip of the hind femora infuscated above. 38 t Tip of the hind femora not infuscated above. 39 , § Fore femora on the under side with a black stripe. 36 preeustus Lw. Fore femora without black streak. 37 comatus Lw. 9 J Fore tarsi black only at the tip. 40 Fore tarsi black from the tip of the first joint. 41 (Two last joints of the male fore tarsi but little enlarged, feathered ” with black. 38 scoparius, n. sp. Two last joints of the male fore tarsi enlarged, not feathered. | 39 discifer Stann. 4) J Last joint of the male fore tarsi very much enlarged. 40 lobatus Lw. Fore tarsi of the male plain. 42 421 Bristles of the hind tibiz longer than usual. 41 setosus Lw. Bristles of the hind tibiz not longer than usual. 42 incisuralis Lw. Systematic Wistritaicon of the Species. I. Prevailing color of the feet black. A. Cilia of the inferior orbit black. 1. gratus Lw. 2. laticornis Lw. B. Cilia of the inferior orbit whitish. 3. setifer Lw. 6. tetricus, n. sp. 4. albiciliatus Lw. 7. acuminatus Lw. 5. xanthocnemus, n.sp. 8. ovatus Lw. II. Prevailing color of the feet yellowish. A. Cilia of the inferior orbit black. 9. pachycnemus Lw. 10. brevipennis Meig. B. Cilia of tl¥e inferior orbit pale. A. Cilia of the tegule pale. 1. Antenne black, the first joint at the utmost partly red. 11. longimanus Lw. 16. splendidus Lw. 12. brevimanus Lw. 17. batillifer Lw. 13. socius Lw. 18. eudactylus Lw. 14. nudus, n. sp. 19. tonsus Lw. 15. subciliatus, n. sp. 2. Antenne entirely, or their greater portion, yellowish red. 20. tener Lw. 22. luteipennis Lw. 21. variabilis Lw. 28 DIPTERA OF NORTH AMERICA. [PART II. B. Cilia of the tegule black. 1. Fourth longitudinal vein broken. a. Antenne black. 23. ramifer Lw. b. Antenne yellowish-red. 24. bifractus Lw. 26. cuprinus Lw. 25. vittatus Lw. 27. longipennis Zw. 2. Fourth longitudinal vein not broken. a. Antenne red, at the utmost the third joint at the tip almost entirely red. a. Humeral callosity of the same color with the thorax. 28. hastatus, n. sp. 31. sexarticulatus, n. sp. 29. plumipes Scop. 32. ryficornis Lw. 30. fulvipes Lw. &. Humeral callosity yellowish. 33. scapularis Lw. 34. funditor Lw. 5. Antenne black, at the utmost the#irst joint partly red. 35. chrysostomus /w. 39. discifer Stann. 36. preeustus Lw. 40. lobatus Lw. 37. comatus Lw. 41. setosus Lw. 38. scoparius Lw. 42. incisuralis Lw. DOLICHOPUS. 29 DESCRIPTION OF THE SPECIES. I. PREVAILING COLOR OF THE FEET BLACK. A. Cilia of the inferior orbit black. 3. D. gratus Lorw. %.—Ex viridi chalybeus, pedum nigrorum tibiis anterioribus totis tibiarnmque posticarum dimidio basali flavis, facie ochracea, ciliis oculorum inferioribus tegularumque ciliis nigriis. Bluish-green, feet black, the four anterior tibiew entirely, the two hind ones upon the basal half yellow; face ochre-brownish ; cilia of the inferior orbit and of the tegule black. Long. corp. 0.23—0.24. Long. al. 0.21. Syn. Dolichopus gratus Lorw, Neue Beitrige, VIII, 11, 1. Bluish-green. The narrow face ochre-brownish. Antenne black; the first joint rather narrow. Front metallic bluish-green. The cilia of the inferior orbit black. Lamelle of the hypopygium whitish, of moderate size, on the upper and the apical margin with a moderately broad black border; the apical margin somewhat jagged and fringed with numerous black bristles. Femora black, with yellow tip; the hind femora rather stout, provided with a bristle before the tip; upon the under side ciliated with long black hair; the four anterior tibie and tarsi yellowish, the latter ones but little darker towards the tip; hind tibia somewhat thickened, the apical half and the whole of their hind side black, the remain- ing parts yellowish; hind tarsi quite black, the first joint with few bristles. -Tegule with strong black cilia. Wings hyaline, the costa is thickened before the tip of the first longitudinal vein, and only very gradually attenuated beyond; the end of the fourth lon- gitudinal vein converges towards the third. Hab. Trenton Falls, West Point, Palisades, ete., N.Y. (Os- ten-Sacken. ) 2. D. laticormis Lorw. %.—Viridis pedum nigrorum tibiis, excepto posticarum apice, flavis, facie alba, ciliis oculorum inferioribus nigris, tegularum ciliis albis. Green, feet black; tibiz, excepting the tip of the hind ones, yellow; face 30 DIPTERA OF NORTH AMERICA, [PART II. white; cilia of the inferior orbit black; cilia of the tegule white. Long. corp. 0.17. Long. al. 0.15. Syy. wolichopus laticornis Loew, Neue Beitr. VIII, 12, 2. Face white, rather broad for a male. Antenne black; the third joint large and broad, ovate; arista inserted upon its second third. Front metallic green. The cilia of the inferior orbit black. Lamelle of the hypopygium rather small, of a trapezoidal form, the upper and apical margin are but very little bordered with black; their margin is not jagged but only fringed with ° minute black hairs. Tip of the coxe yellow. Femora black, with a faint greenish reflection and yellow tip. Tibiz yellowish. (The middle tibiz are wanting in the described specimen.) |The tip of the hind tibie, which are not thickened at all, is black. Fore tarsi from the tip of the first joint black; hind tarsi entirely black; the first joint is beset with a few thorn-like bristles. Hind femora before the tip with a stout bristle. Tegule with whitish cilia. Wings hyaline; the costa but scarcely thickened about the tip of the first longitudinal vein; the end of the fourth longitu- dinal vein converges towards the third. Hab. Connecticut. (Norton.) B. Cilia of the inferior orbit pale. 3. D. setifer Lorw. %.—Obscure viridis, pedum nigrorum tibiis an- terioribus posticarumque dimidio basali flavis, facie alba, ciliis oculorum inferioribus tegularumque ciliis albidis, metatarso postico valde setoso. Dark green; feet black, the four anterior tibie and the basal half of the two hind ones yellow; face white; the cilia of the lower orbit and of the tegule whitish; the first joint of the hind tarsi with many thorn-like bristles. Long. corp. 0.17. Long. al. 0.15. Syn. Dolichopus setifer Loew, Neue Beitr. VIII, 12, 3. Face silvery-white, narrow. Antenne black, third joint short. Front metallic green. The cilia of the inferior orbit whitish. The lamelle of the hypopygium whitish; their long apical margin is finely jagged only below and fringed with long bristles, above only finely hairy; its lower corner has a narrow black border. The black femora show a green reflection and have a clayish-yel- low tip; the hind femora have a bristle before their tip and are ciliated on their under side with long black hairs; the four anterior tibiew are clayish-yellow; the first joint of the four anterior tarsi DOLICHOPUS. 381 is of the same color; its tip and the remaining joints are black. The hind tibize are black; upon their upper side, from the base beyond the middle, clayish-yellow; towards their tip but little thickened; the first joint of the hind: tarsi is covered with many thorn-like bristles. Tegule with whitish cilia. Wings entirely hyaline, towards the base somewhat wedge-shaped, with a black spot which occupies their very tip. The costa is hardly thickened near the tip of the first longitudinal vein; the end of the fourth longitudinal vein converges towards the third. Hab. District Columbia ; Trenton Falls, N. Y. (Osten-Sacken.) 4. D. albiciliatus Lorw. 9.—Obscure viridis, pedum nigrorum tibiis, posticarum apice tamen excepto, tarsorumque anteriorum basi flavis, facie alba, ciliis oculorum inferioribus albis, tegularum ciliis nigris. Dark green; feet black, tibie, excepting the tip of the hind ones, and the basis of the four anterior tarsi, yellow; face white; cilia of the inferior orbit white ; cilia of the tegule black. Long. corp. 0.20. Long. al. 0.20. Syn. Dolichopus albiciliatus Loew, Berl. Ent. Monatschr. VI, 211, 59. Dark green. Face proportionally rather broad, white. An- tenn black, third joint short. Front metallic green. Cilia on the inferior orbit white. Femora black, with a greenish reflection, their extreme tip brownish-yellow; on the under side of the hind femora the hairs are somewhat longer than in the related species, and of such a kind as to lead to the supposition that the male has the hind femora ciliated with black. Tibize yellow, the tip of the hind ones black; this black coloring occupies on the anterior side perhaps the fourth, on the hind side nearly the third part. On the four anterior tarsi the four last joints, including the tip of the first joint, are black; the hind tarsi are entirely black; their first joint is as long as the second, upon its upper side with two bris- tles, and upon its under side with one. Cilia of the tegule black. Wings hyaline. Hab. MWlinois. (Le Baron.) 5. D. xanthocnemus,n.sp. % and 9.—Obscure viridis, pedum nigrorum tibiis, posticarum apice tamen excepto, tarsorumque anteriorum, basi flavis, facie alba, ciliis oculorum inferioribus albis, tegularum ciliis nigris, femoribus maris posticis albo-ciliatis. Dark green; feet black, tibiv, excepting the tip of the hind ones, and the 32 DIPTERA OF NORTH AMERICA. [PART il. base of the four anterior tarsi, yellow; face white; cilia of the inferior orbit white; cilia of the tegule black; hind femora of the male ciliated with white. Long. corp. 0.15—0.16. Long. al. 0.17—0.18. In the color and even the structure of the body this species re- sembles D. albiciliatus ; but it is much smaller. Face white, that of the male rather narrow, that of the female proportionally rather broad. Palpi blackish at the base, at the tip more yellowish and with a somewhat whitish reflection. Antenne black; third joint rather short, in the ¢ somewhat larger than in the ¢. Front metallic green. Cilia of the posterior orbit black above, white on the side and below. Coxe black, trochanters brownish-yellow. The fore coxee dusted on their fore side and beset with black hair. Femora black, with brownish-yellow tip, the hind ones before the tip with a bristle. The hairs of the femora are black, but there are on the under side of the four anterior femora of the male some delicate and short white hairs. The under side of their hind femora is ciliated with very long white hairs; upon the under side of the anterior femora of the female the hairs are closer than in the male, and show a whitish appearance only in a certain direction, whilst in another direction they appear rather blackish. Tibive yellowish ; the hind tibize are colored with black at the tip; this black coloring has but a moderate extent and is rather sharply limited. 'Tarsi plain in both sexes; on the four anterior ones the tip of the first joint and the four following joints are co- lored black; the hind tarsi are entirely black; in the male their first joint has more thorn-like bristles than in the female. - Cilia of the tegule black, but mixed with minute white hairs, as it is also the case with the related species, for instance with D. albic7- liatus. Wings grayish hyaline; in the male the anterior margin has at the tip of the first longitudinal vein a small knot-shaped swelling. The white lamelle of the hypopygium are of a rounded- ovate form, bordered with black, jagged on the upper and apical margins and fringed with black bristles. Hab. Sitka. (Sahlberg.) Observation.—Between the diagnosis of this species and that of D. albiciliatus there is no difference with regard to the female sex except in the size. Indeed the females of both species are very much alike. In order to distinguish them it will be well to bear in mind that the female of D. xanthocnemus is not only Ae DOLICHOPUS. 33 much smaller, but that the incisures of its abdomen are less blackened, that the black coloring on the tip of its hind tibiz is less extended and more sharply limited, and that finally the short hairs upon the under side of its fore and middle femora have, in a reflected light, for the most part a whitish appearance, whilst in the female of D. albiciliatus this is the case only in the proximity of the base of the fore femora. G. D. tetricus, n. sp. % and 9.—Obscure viridis, rarius cupreus, antennis pedibusque nigris, apicali femorum triente testaceo, inferioribus oculorum ciliis flavicantibus, alis cinereis. 4. Facie exochraceo-cine- red, lamellis hypopygii albidis, ultimo tarsorum anticorum articulo dilatato, tibiis posticis crassiusculis. Q. Facie albida, pedibus simpli- cibus. Dark green, seldom coppery; antenne and feet black, the last third of the femora brownish-yellow; cilia of the inferior orbit yellowish; wings grayish. %. Face yellowish-gray; lamellz of the hypopygium whitish ; the last joint of the fore tarsi enlarged: hind tibie somewhat thickened. ©. Face white; feet plain. Long. corp. 0.18—0.20. Long. al. 0.20— 0.22. Dark green, bright; the last segments ef the abdomen are usually dark bronze-colored, and sometimes the color of the body is everywhere very coppery. Antenne black; the third joint almost round, still with a sharp projection at the tip. Front me- tallic green. The face of the male not very narrow, yellowish gray ; the face of the female much broader, whitish. Palpi black, dusted with whitish on the edge, particularly in the female. Cilia of the inferior orbit yellowish, sometimes nearly whitish. Hypopygium with elliptic, whitish lamella of moderate size, which are bordered with black on the upper and apical margin; the latter is somewhat jagged. Cox black; fore coxa with black hairs and bristles, only very slightly dusted with white. Feet black; the last third of the fore and middle femora, as also somewhat more than the last quar- ter of the hind femora, reddish luteous-yellow or almost yellowish- red; the hind femora before the tip with a seta, not ciliated upon their under side, even in the ¢. The tibiz show only at the very extreme base a lighter color; in the 2 all tibie are of a plain structure, in the ¢ the hind tibie are conspicuously thickened. The ¢ has plain tarsi, in the male the last joint of the fore tarsi is flattened from the side, and enlarged above into a lobe; the first joint of the hind tarsi in both sexes is but little fringed with 3 34 DIPTERA OF NORTH AMERICA. [PART IL. thorn-like bristles. Cilia of the tegule black. Wings grayish with brownish-black veins; the last section of the fourth longi- tudinal vein has a rather strong flexure in the middle, but from that point runs nearly parallel with the third longitudinal vein ; the ¢ has no swelling of the costa at the tip of the first lorgi- tudinal vein. Hab. Fort Resolution, Huds. Bay Territory. (Kennicott.) % D.acuminatus Loew. % and 9.—Obscure viridis, pedum ni- grorum tibiis anticis ex flavo fuscis, facie alba, ciliis oculorum inferiori- bus albis, tegularum ciliis nigris, lamellis hypopygii magnis, acutis. Dark green; the feet black, fore tibiz brownish-yellow ; face white; cilia of the inferior orbit white, of the tegule black; the large lamelle of the hypopygium pointed at the end. Long. corp. 0.15. Long. al. 0.14— 0.15. Syn. Dolichopus acuminatus Lorw, Neue Beitr. VIII, 12, 4. Male. Dark green. Face narrow, white. Antenne black; their third joint short. Front metallic green. Lamelle of the hypopygium white, large, spatule-shaped, pointed, so that the upper and the lower margin strike together and there is no dis- tinct apical margin; the upper one has a narrow black border and is ciliated with minute black hairs. The black femora with a bluish-green reflection, and their extreme tip brownish-yellow ; fore tibize upon the greatest part of the upper side brownish-yel- low, dark brown beneath; fore tarsi brownish-black with yellow base; middle tibise and middle tarsi brownish-black, still the’ base of the latter yellowish-brown; hind tibize and hind tarsi entirely black, the latter sparsely bristly upon the first joint. Cilia of the tegule black. Wings hyaline; the costa at the tip of the first longitudinal vein not thickened; the end of the fourth vein con- verging towards the third; the hind transverse vein somewhat less steep than in D. ovatus. Female. Very much like the male. The white face much broader than in the male, still not so broad as in the female of D. albiciliatus. The yellow coloring upon the upper side of the fore tibie is not only generally lighter than in the J, but also often distinetly observable upon the first half of the upper side of the middle tibize. Hab. Washington. (Osten-Sacken.) Illinois. (Le Baron.) ‘ DOLICHOPUS. Sean S. D. ovatus Lorw. 4 .—Obscure viridis, pedum nigrorum tibiis an- ticis ex flavo fuscis, facie alba, ciliis oeulorum interioribus albidis, tegu- larum ciliis nigris, lamellis hypopygii parvis, rotundato-ovatis. Dark green; feet black, fore tibiz brownish-yellow ; face white; cilia of the inferior orbit whitish, of the tegule black; lamellae of the hypopygium small, rounded-ovate. Long. corp. 0.15. Long. al. 0.14—0.15. Syyx. Dolichopus ovatus Loew, Neue Beitr. VII, 13, 5. Face narrow, white. Antenne black, third joint short. Front metallic green. Cilia of the inferior orbit whitish. Lamell of the hypopygium white, rather small, roundish-ovate, on the upper and apical margin with a narrow black border, on the latter split into a bristle-like lobe and fringed with black bristles. Feet black ; the femora with a somewhat greenish reflection; their ex- treme tip brownish-yellow; the root of the fore and middle tarsi are of the same color. Fore tibiz upon the greatest part of the upper side brownish-yellow, beneath dark brown. Middle tibize and middle tarsi brownish-black. Hind tibie and hind tarsi black. Cilia of the tegule black. Wings hyaline; the costa at the tip of the first lgngitudinal vein not thickened. The end of the fourth longitudinal vein converges towards the third; the hind transverse vein straight and steep. Hab. Middle States. (Osten-Sacken.) Observation.—The 2 of D. ovatus, which is not known to me, must resemble very much that of D. acuminatus. Besides the but slight discrepancy in the color of the feet, the difference con- sists probably in the coarser hairs on the fore coxe; at least the hairs in the ¢ of D. ovatus are coarser and also longer than in that of D. acuminatus. The difference in the direction of the hind transverse vein, in the males of both species, is not sufficient to be relied upon for an easy discrimination of the 9 of the same species. II. PREVAILING COLOR OF THE FEET YELLOWISH. A. Cilia of the inferior orbit black. 9. D. pachycnemus Lorw. § and ?.—Aeneo-viridis, antennis, oculorum tegularumque ciliis nigris, coxis omnibus totis obscuris, pedi- bus flavis, dimidio tibiarum posticarum apicali, tarsis intermediis inde ab articuli primi apice, posticisque totis nigris. *%. Tarsis anticis attenuatis, articulis tribus ultimis atris, compressis, 36 DIPTERA OF NORTH AMERICA. [PART IL. duobus ultimis valde dilatatis, femoribus posticis nigro-ciliatis, tibiis posticis incrassatis. ©. Pedibus simplicibus, tarsis anticis inde ab articuli primi apice nigris. Metallic green ; antenne, cilia of the inferior orbit and of the tegule black ; all coxe entirely dark; tarsi yellow; the whole second half of the hind tibiew, the middle tarsi from the tip of the first joint and the whole hind tarsi black. *,. Fore tarsi attenuated; the three last joints black, compressed, the two last joints much enlarged; hind femora ciliated with black; hind tibiz incrassated. . Q. Feet plain, fore tarsi from the tip of the first joint blackened. Long. corp. 0.25—0.26. Long. al. 0.22. Syy. Dolichopus pachycnemus Lorw, Neue Beitr. VIII, 13, 6. Dark metallic green, bright. Face of the ¢ narrow, ochre-yel- low; face of the 2 broad, grayish-yellow. Antenne entirely black; the third joint ovate. Front bright, generally for the most part steel-blue. The cilia of the inferior orbit black. Thorax with a rather broad brass-colored middle line. Abdomen eoppery towards the end. All the coxe black, only their extreme tip somewhat brownish-yellow. Feet dark yellow; hind femora on the extreme tip darker, before the same with a strong bristle; all tibia with numerous bristles; hind tibiz2 upon the entire second half black; middle tarsi from the tip of the first joint black; hind tarsi entirely black. Tegule with black cilia. Wings some- what shorter than usual, in the ? somewhat more dusky than in the male, especially somewhat darker towards the fore margin. Male. Fore tarsi not very much longer than the fore tibie; their first and second joints slender, stalk-like, yellow; the first one much longer than the second; the following joints black, flat- tened; the third somewhat broader towards the end; the fourth much enlarged, of a nearly triangular form, beset upon the upper side with short, close, minute black hairs; the fourth joint is like- wise much enlarged, still not as broad a8 the third, and of a more ovate form. Hind tibie much thickened, stoutest in the middle, and marked upon the upper side with a narrow pale line running from the middle to the tip; hind femora ciliated beneath with long black hairs. Lamelle of the hypopygium dingy yellow, with a broad black border, of moderate size and of a rather round shape, jagged on the apical margin and fringed with black bristles. Female. Feet plain; the fore tarsi rather blackish already from DOLICHOPUS. on the tip of the first joint, which is sometimes the case in J, but only in very dark-colored specimens. Hab. Middle States. (Osten-Sacken.) Illinois. (Kennicott. ) 10. D. brevipemnis Mric. % and 9.—Aeneo-viridis, antennis, oculorum tegularumque ciliis nigris, coxis anticis praeter basim pedi- busque flavis, triente tibiarum posticarum apicali, tarsis intermediis inde ab articuli primi apice, posticisque totis nigris. ‘ %,. Tarsis anticis attenuatis, articulis duobus ultimis atris, compressis, ultimo eximie dilatato, femoribus posticis pallide-ciliatis. ©. Pedibus simplicibus, tarsis anticis inde ab articuli primi apice nigris. Metallic-green ; antenne, cilia of the inferior orbit and of the tegule black ; fore coxe, excepting the basis, and feet yellow; the last third of the hind tibiw, the middle tarsi from the tip of the first joint and the whole hind tarsi black. ‘4. Fore tarsi attenuated, the two last joints black, flattened, the last one extremely enlarged; the hind femora ciliated with pale hairs. Q. Feet plain; the fore tarsi from the tip of the first joint black. Long. corp. 0.24—0.25. Long. al. % 0.22; 9 0.24—0.25. Syn. Dolichopus plumitarsis (var. 8.) Fatuzn, Dol. 10, 4. Dolichopus brevipennis MricEN, Syst. Beschr. IV, 89, 27.—Srannuvs, Isis, 1831, 60, 12.—Zerrrerstept, Ins. Lapy. 700, 8.—Srarcer, Kroyer Tidsskr. IV, 23, 13.—ZeErrersrept, Dipt. Scand. I, 603.—Wat.ker, Dipt. Brit. I, 160, 10. Dark metallic green, bright. Front green. Antenne black. Face of the ¢ grayish-yellow; that of the 2 grayish-white, slightly yellowish, much broader than in the ¢. Palpi brown. Cilia of the inferior orbit black. Hypopygium black. Lamellz large, oblong-ovate, dingy-yellowish, with a broad black border, on the apical margin somewhat jagged and fringed with crooked black bristles. The hind cox blackish, only on the extreme tip yellow. Fore coxe yellow, hairy with black; on the outside of the basis with a somewhat triangular greenish-black spot. Feet yellow. Hind femora before the end only with one bristle; in the & they are sparsely ciliated beneath with very long, yellowish hairs. On the hind tibie the last third at least is black; hind tibie of the f perceptibly stronger than those of the 2, but not near so strong as those of the male of D. pachycnemus; they have no large bare spot upon their hind side, but at the end of the upper side a straight, pale, longitudinal line occupying the whole of their last third. The fore tarsi of the J are about 14 38 DIPTERA OF NORTH AMERICA. [PART II. the length of the tibiee; their three first joints are style-like, very attenuated, generally brownish-yellow; their two last joints are black, flattened from the side, the penultimate but little, the last joint on the contrary very much enlarged. The fore tarsi of the @ are plain, blackish from the tip of the first joint. Middle tarsi of both sexes plain, black from the tip of the first joint; upon the second half of the upper side of their first joint a single stronger bristle is inserted. Hind tarsi always altogether black. Cilia of the tegule black. Wings of the @ somewhat less grayish than those of the , proportionally somewhat shorter and more pointed, with a strong swelling of the costa near the tip of the first longi- tudinal vein. he hind transverse vein almost perpendicular ; the last portion of the fourth longitudinal vein not broken. Hab. Fort Resolution, Hudson’s Bay Territory. (Kennicott.) Observation.—The identity of Mr. Kennicott’s specimens with the European D. brevipennis may be considered as doubtless, after the most careful comparison. B. Cilia of the inferior orbit pale. A. Cilia of the tegqulx pale. 1. Antenne black, at the utmost the larger portion of the first joint red. Li. D. lomgimanus Lorw. % and 9.—Aeneo-viridis, facie maris pallide ochracea, foeminze ex flavo cinerascente, antennis nigris, ciliis oculorum inferioribus tegularumque ciliis flavicantibus, coxarum anti- carum dimidio basali obscuro, pedibus flavis, tarsis posticis totis nigris ; maris ultimo tarsorum anticorum articulo valde dilatato femoribusque posticis ciliatis. Metallic green; the face of the % pale ochre-yellowish, that of the 9 yel- lowish-gray ; antennz black ; cilia of the inferior orbit and of the tegule yellowish ; basal half of the fore cox dark; feet yellow with entirely black hind tarsi, last joints of the % fore tarsi enlarged and % hind femora ciliated. Long. corp. 0.26—0.27. Long. al. 0.27—0.28. Syn. Dolichopus longimanus Loew, Neue Beitr. VII, 14, 7. 3ronze-green, rather bright. Face of the ¢ narrow, pale ochre-yellow; face of the 2 rather broad, light yellow-grayish. Antenne entirely black, lower corner of the third joint with a scarcely perceptible lighter coloring; third joint of the antenne in the ¢ short ovate, in the almost round. Front bright, green or blue-green. The cilia of the inferior orbit yellow. DOLICHOPUS. 39 Upper side of the thorax somewhat pruinose, with a coppery middle stripe and with a somewhat coppery-colored mark on each side before the transverse suture, sometimes coppery on a larger extent. Basal portion of the fore cox blackish beyond the mid- dle; on the middle and hind ones this coloring extends almost as far as the extreme tip. Feet yellow; fore tarsi black at the tip only, middle ones from the tip of the first joint; hind tarsi entirely black; the hind femora before the tip with a bristle. Tegule with yellowish cilia. Wings rather large, hyaline; the fourth longi- tudinal vein not broken. Male. The lamelle of the hypopygium whitish, on the upper margin with a narrow, on the apical oye with a broader black border, ovate; their apical margin is fringed with black bristles and jagged on its lower part. Fore tarsi slender and nearly twice as long as the tibie; the four first joints yellow ; first joint as long as four-fifths of the tibize; second joint half as long as the first ; the third one but little shorter than the second; the fourth only about half as long as the third; the fifth joint but little longer than the fourth, black, flattened, beset upon the upper margin with appressed black hairs. Hind femora upon the second half of the under side closely ciliated with yellow hairs. Hind tibi somewhat stout, without being actually thickened; they are glabrous upon the anterior half of their hind side. Costa near the tip of the first longitudinal vein with an elongated swelling. Hab. English river. (Kennicott.) West Point, N. Y. (Os- ten-Sacken. ) 12. D. brevimanus Lorw. 4.—Aeneo-viridis, facie alba, antenna- rum nigrarum articulo primo subtus rufo, ciliis oculoram inferioribus albis, tegularum ciliis pallide flavicantibus, pedibus flavis, coxis anticis concoloribus, tarsis anticis ex flavo pallide ferrugineis, intermediis inde ab articuli primi apice posticisque totis cum tibiarum apice nigris. Metallic-green; face white; the first joint of the black antenne upon the under side red; cilia of the inferior orbit white, of the tegule yellowish ; the fore coxe# and feet yellow; the fore tarsi pale rusty-brownish ; mid- dle ones from the tip of the first joint and the whole hind ones, including the tip of the tibiw, black. Long. corp. 0.17. Long. al. 0.17. Syx. Dolichopus brevimanus Loew, Neue Beitr. VIII, 14, 8. Metallie-green, bright. Face white. Antenne black; the whole lower margin of the first joint red; third joint ovate, not 40 DIPTERA OF NORTH AMERICA. [PART iT. rounded at the tip. Front bright bluish-green. Cilia of the in- ferior orbit white. Lamelle of the hypopygium white, of medium size and of ovate form, upon the upper and apical margin with a narrow black border, and fringed with black bristles; on the apical margin somewhat jagged. Fore coxe yellowish-white, with- out minute black hairs upon the anterior side; middle and hind coxee blackish with whitish-yellow tip. Feet light yellow; hind femora beset with somewhat longer minute black hairs, without being actually ciliated. Hind tibie plain, upon the hind side without glabrous stripe, at the tip blackish. Fore tarsi only as long as the tibie and but little darker than those, yellow- brownish; middle tarsi black from the tip of the first joint; hind tarsi entirely black. Tegule with pale yellowish cilia. Wings hyaline, towards the fore margin with a faint brownish-gray tinge; costa near the tip of the first longitudinal vein although somewhat stouter, not actually thickened; the fourth longitu- dinal vein not broken. Hab. Washington. (Osten-Sacken. ) 13s. D.socius Lorw. %.—Aeneo-viridis, facie alba, antennarum ni- grarum articulo primo subtus rufo, ciliis oculorum inferioribus albis, tegularum ciliis dilute flavicantibus, pedibus flavis, coxis anticis con- coloribus, tarsis anterioribus inde ab articuli primi apice, apice tibiarum posticarum tarsisque posticis totis nigris. Metallic-green ; face white; the first joint of the black antenne upon the under side red ; cilia of the inferior orbit white ; cilia of the tegule pale yellowish; fore coxe and feet yellow, the four anterior tarsi from the tip of the first joint, the tip of the hind tibiz and the whole hind tarsi black. Long. corp. 0.17. Long. al. 0.17. Syn. Dolichopus socius Loew, Berl. Entom. Zeitschr. VI, 211, 60. Metallic-green, bright. Face white. Antenne black; the whole lower margin of the first joint red, the third joint ovate, not rounded at the tip. Front bright, bluish-green. Cilia of the in- ferior orbit white. Lamelle of the hypopygium white, of medium size, ovate, on the upper and apical margin with a narrow black border and fringed with black bristles, on the apical margin somewhat jagged. Fore cox yellowish-white, without minute black hairs upon the front side; middle and hind coxe blackish, with yellowish tip. Feet pale yellow; hind femora upon the un- der side with but extremely short hardly visible hairs; hind tibiee DOLICHOPUS. ., 4] blackish at the tip; upon the hind side without glabrous stripe ; fore tarsi but little longer than the tibiz, rather slender, blackened from the tip of the first joint, still so that the extreme basis of the second and sometimes even that of the third joint remain pale; the last joint of the fore tarsi is light rusty-brownish; middle tarsi from the tip of the first joint black; hind tarsi entirely black. Cilia of the tegule pale yellowish. Wings hyaline, towards the fore margin with a faint brownish-gray tinge; the costa near the tip of the first longitudinal vein only very little stouter, but not thickened ; fourth longitudinal vein not broken. Hab. Mlinois. (Le Baron.) Observation.—In order to distinguish D. socius from the very like D. brevimanus, it is only necessary to pay attention to the difference in the length and coloring of the fore tarsi and also to the different nature of the hairs.on the under side of the hind femora. From D. subciliatus, nudus and splendidus, D. socius differs by its hind tibize, which are distinctly blackish at the tip, whereas in D. subciliatus and nudus they are only slightly infus- cated at the tip, and altogether yellow as far as the extreme tip in D. splendidus. From D. subciliatus and D. splendidus it further differs by the red coloring of the lower margin of the first joint of the antennz and by the hind femora of the ¢ which are not ciliated; from all three above named species it differs by the plain fore tarsi of the ¢. 14. D. nudus,n. sp. 4% and 9.—Viridis, nitidus, coxis anticis pedi- busque flavis, apice tibiarum posticarum subfusco, antennis preter in- ferum articuli primi marginem tarsisque posticis nigris, ciliis oculorum inferioribus tegularuinque ciliis flavicantibus. *,. Tarsis anticis elongatis tenuibus, articulo ultimo dilatato atro, femori- bus posticis non ciliatis. ©. Pedibus simplicibus, tarsis anticis inde ab articuli primi apice nigris. Green, bright ; fore coxe and feet yellow ; tip of the hind tibie brownish ; hind tarsi black; lower margin of the first joint of the black antenne red ; cilia of the inferior orbit and of the tegule yellowish. %,. Fore tarsi elongated, slender, their enlarged last joint black; hind femora not ciliated. Q. Feet plain; fore tarsi from the tip of the first joint blackened. Long. corp. 0.21—0.22. Long. al. 0.25. Male. Metallic-green, bright. Front metallic-green. An- tenn black ; the under side of the first joint yellowish-red ; third 49, DIPTERA OF NORTH AMERICA. [PART If. joint rather blunt at the tip. Face ochre-yellow; palpi yellow. Cilia of the inferior orbit pale yellowish. Hypopygium black ; lamellee of medium size, ovate, white, with a rather narrow black border, on the apical margin jagged and fringed with black bristles. Four posterior cox blackish with yellow tip. Fore coxe yellow, only somewhat blackened at the extreme basis, beset upon the an- terior side with delicate black hairs, which reach nearly to their base. Feet pale yellow. Hind femora before the tip with a bris- tle, upon the under side only with very short minute pale hairs. Hind tibiz stout but not exactly thickened, upon the first half of the hind side without hairs, at the extreme tip brownish. Fore tarsi twice as long as the tibie; their four first joints very thin, yellow ; first joint nearly as long as the three following ones together ; the third somewhat shorter than the second ; the fourth hardly half as long as the third; the fifth joint black, flattened, broad, still not as large as in D. batillifer ; upon its upper margin it is beset with appressed minute black hairs. Middle tarsi from the tip of the first joint blackened ; hind tarsi entirely black. Cilia of the tegulx yellowish-white. Wings hyaline; near the tip of the first longitudinal vein with a long but not very thick swelling, which gradually merges into the costa; fourth longitudinal vein not broken. Female. Wings and feet plain, fore tarsi from the tip of the first joint blackened. All the rest as in the male. Hab. Fort Resolution, Hudson’s Bay Territory. (Kennicott.) Observation.—The resemblance of the present species with D. subciliatus is so great that, as both occur in the same region, 1 was for a long time in doubt whether I should consider them as two species. As the unfringed under side of the hind femora of my two ¢ of D. nudus does not seem to be rubbed off; as, in both sexes, the first joint of the antenne is tinged with red on the under side, and as there are some other differences besides (which will be seen by the comparison of the descriptions of both species), I am. led to the conclusion that there is a specific difference between D. nudus and D. subciliatus. It is very striking how closely allied the species of some groups of North American Dolichopus are. 15. D. subciliatus, n. sp. %.—Viridis, nitidus, coxis anticis pedi- busque flavis, apice tibiarum posticarum subfusco, antennis tarsisque a ed DOLICHOPUS. 43 posticis nigris, ciliis oculorum inferioribus tegularumque ciliis flavican- tibus. %,. Tarsis anticis elongatis tenuibus, articulo ultimo dilatato atro, femo- ribus posticis rare flavo-ciliatis. 2) STS Ao orn Green, shining ; fore coxe and feet yellow; tip of the hind tibiz brownish ; antenne and hind tarsi black ; cilia of the inferior orbit and of the tegule yellowish. 4. Fore tarsi elongated, slender; the enlarged last joint black ; the hind femora sparsely ciliated with yellow. QO. . »« - «- - « Long. corp. 0.21—0.22. Long. al. 0.25. Metallic-green, bright. Front metallic-green. Antenne black ; on the under side of the first joint I am not able to discover any lighter coloring; third joint rather blunt at the tip. Face gray- ish-yellow, nearly ochre-yellow. Palpi yellow. Cilia of the in- ferior orbit pale-yellowish.. Hypopygium black ; lamellee of medium size, ovate, white, with narrow black border, on the apical margin somewhat jagged and fringed with black bristles. The four poste- rior coxe blackish with yellow tip. Fore cox yellow, only at the extreme basis somewhat blackened, upon the anterior side beset with very delicate black hairs, which do not reach to their base. Feet pale yellow. Hind femora with a bristle before the tip, upon the greater part of the under side sparsely ciliated with moderately long yellowish hairs. Hind tibie stout, but not exactly thickened, not hairy upon the first half of the hind side ; brownish at the extreme end. Fore tarsi twice as long as the tibia; their four first joints very slender, yellow; the first joint nearly as long as the three following ones together; the third somewhat shorter than the second ; the fourth hardly half as long as the third; the fifth joint black, flattened, broad, still not as large as in D, batillifer ; upon its upper edge it is beset with appressed minute black hairs. Middle tarsi from the tip of the first joint blackened. Hind tarsi entirely black. Cilia of the tegule yel- lowish-white. Wings hyaline, somewhat grayish, at the tip of the first longitudinal vein with a long but not very stout swelling, which gradually merges into the costa; fourth longitudinal vein not broken. Hab. Fort Resolution, Hudson’s Bay Territory. (Kennicott.) Observation.—The necessary data for the distinetion of this species from the foregoing, is contained in the description of the latter. 44 DIPTERA OF NORTH AMERICA. [PART II. 16. D. splemdidus Lorw. ‘4% .—Aeneo-viridis, letissime cupreo mi- cans, pedibus flavis, coxis anticis tibiisque posticis totis concoloribus, antennis tarsisque posticis nigris, ciliis oculorum inferioribus tegula- rumque ciliis flavicantibus. *,. Tarsis anticis modice elongatis, articulo ultimo dilatato atro, femoribus posticis confertim flavido-ciliatis. Metallic-green, with a brilliant coppery-red reflection ; feet and fore coxe yellow, hind tibia not darker at the tip; antennz and hind tarsi black; cilia of the inferior orbit and of the tegule yellowish. *,. Fore tarsi but moderately elongated; the enlarged last joint black; hind femora closely ciliated with yellowish. QO. - « © « « « Long. corp. 0.24. Long. al. 0.23—0.24, Syy. Dolichopus splendidus Loew, Neue Beitr. VIII, 14, 9. Bronze-green, with a brilliant coppery-red reflection, very bright. Face pale-yellowish. Antenne entirely black; the third joint short-ovate. Front bright green with a coppery-red reflec- tion. Cilia of the inferior orbit pale yellowish. Upper side of the thorax with an almost purplish spot on each side before the transverse suture. Lamelle of the hypopygium dingy whitish, rather large and of an oval form, on the upper and apical margin narrowly bordered with black, on the latter jagged and fringed with black bristles. The four posterior cox blackish, yellow only at the extreme tip. Fore coxe entirely yellow, beset upon their anterior side with rather minute black hairs, which do not reach to their base. Feet yellow. Hind femora before the tip with a bristle and upon the greater part of their under side closely ciliated with very long yellowish hairs. Hind tibie although stout, but not exactly thickened, without hairs upon the anterior half of the hind side. Fore tarsi not quite 14 times the length cf the tibie ; the four first joints yellow ; the first to the third stalk-like, still not quite as slender as in the previous and in the three fol- lowing species; the fourth joint somewhat broader, particularly towards its tip; the first joint nearly as long as the three following taken together, the third somewhat shorter than the second and the fourth distinctly shorter than the third; the fifth joint black, flat- tened, broad, particularly towards its tip, still by far not as large as in D. batillifer ; wpon its upper margin it is beset with appressed minute black hairs. Middle tarsi blackened from the tip of the first joint ; hind tarsi entirely black. Cilia of the tegule whitish. Wings hyaline, a little grayish, of a rather equal breadth; the “eq DOLICHOPUS. 45 costa near the tip of the first longitudinal vein with an elongated but not very stout swelling; the fourth longitudinal vein not broken. Hab. Winois. White Mountains, N. H. (Osten-Sacken.) Observation 1.—I believe I possess also the Q of this species in a single specimen, and would not doubt it at all if the tip of the hind tibie did not show a rather distinct brown coloring, which is not perceptible in the ¢. All the other marks in the 2 are precisely as they might be expected in the @ of the above described ¢.. The fore tarsi are blackened from the tip of the first joint. Observation 2.—D. splendidus differs from D. subciliatus not only by being much brighter, but particularly by the much less perceptible lengthening of the fore tarsi and by the much longer and much closer ciliation of the hind femora of the male. 1%. D. batillifer Lorw. % and 9.—Aeneo-viridis, pedibus flavis, coxis anticis tibiisque posticis totis concoloribus, antennis tarsisque posticis nigris, horum basi flava, ciliis oculorum inferioribus tegula- rumque ciliis flavicantibus, maris ultimo tarsorum anticorum articulo admodum dilatato. Metallic-green ; fore coxe and feet yellow; the tip of the hind tibize not darker; antenne and hind tarsi black, the latter at the base yellow; cilia of the inferior orbit and of the teguie yellowish; the last joint of the fore tarsi of the 4 remarkably enlarged. Long. corp. 0.26. Long. al. 0.25. Syn. Dolichopus batillifer Lozrw, Neue Beitr. VIII, 15, 10. Metallic-green, bright. Face of the ¢ narrow, more light ochre-yellowish than golden-yellow ; the face of the 2 broader and yellowish-white. Antennze quite black, the lower corner of the first joint only somewhat lighter; the third joint short. Front green, or bluish-green, bright. Cilia of the inferior orbit yellow- ish. The more bronze-colored middle line of the thorax often hardly perceptible; on each side before the transverse suture a bronze-colored spot. Fore cox yellow, upon the whole anterior side with a black pubescence. Hind coxe only at the extreme tip yellow. Hind femora with a bristle before the tip. Fore tarsi black only at the tip. Middle tarsi blackened from the tip of the first joint, still the base of the first and of the second joints is often not quite black. The hind tarsi are of the same color. Cilia of 46 DIPTERA OF NORTH AMERICA. [PART II the tegule yellowish. Wings grayish-hyaline; the fourth longi, tudinal vein not broken. Male. Uamelle of the hypopygium whitish, of moderate size and of a rather oval shape; on the upper and apical margin they are narrowly bordered with black; on the latter very much jagged and fringed with black bristles. Hind femora very closely ciliated with yellow hairs on the middle of the under side. Fore tarsi about 14 times the length of the tibie ; their three first joints slender and stalk-like, the first as long as the second and third taken together; the second about 1} times the length of the third; the fourth joint somewhat more than half as long as the third and somewhat broader ; upon the whole under side and upon the upper side, excepting the tip, whitish; the fifth joint somewhat longer than the third and fourth taken together, flattened, extremely broad, black with a silk-like reflection ; upon its outside this reflec- tion takes a handsome silvery hue when viewed in a very ob- lique direction. Hind tibiz considerably thickened, the greatest thickness somewhat before the middle; the anterior half of their hind side without pubescence. The costa near the tip of the first longitudinal vein with a rather elongated swelling. Hab. West Point, N. Y.; Illinois. (Osten-Sacken.) Con- necticut. (Norton.) White Mountains, N. H. (Osten-Sacken.) 18. D. eudactylus Lorw. 4 and 9.—Aeneo-viridis, pedibus flavis, coxis anticis tibiisque posticis totis concoloribus, antennis tarsisque posticis nigris, horum basi flava, ciliis oculorum inferioribus tegula- rumque ciliis flavicantibus, maris duobus ultimis tarsorum anticorum articulis dilatatis et femoribus posticis ciliatis. Metallic-green ; fore coxe and feet yellow; hind tibie not darker at the tip; the black hind tarsi with yellow root; cilia of the inferior orbit and of the tegule yellowish; the two last joints of the fore tarsi of the * enlarged and the hind femora ciliated. Long. corp. 0.26. Long. al, 0.25. Syn. Dolichopus eudactylus Lozw, Neue Beitr. VII, 16, 11. Metallic-green, bright. Face of the ¢ narrow, ochre-yellow- ish; the face of the @ broader and yellowish-white. Antenne entirely black, the lower corner of the first joint hardly somewhat lighter; third joint short. Front green, or bluish-green, bright. Cilia of the inferior orbit yellowish. The more bronze-colored middle line of the thorax usually but little distinct ; on each side DOLICHOPUS. 47 before the suture a bronze-colored spot. Fore coxe yellow, upon the anterior side with black pubescence. The four posterior coxe yellow only at the extreme tip. Feet yellow; hind femora with a bristle before the tip. The color of the fore tarsi changes from brown into black towards the tip; middle tarsi blackened from the tip of the first joint; the hind tarsi are of the same color. Cilia of the tegule yellowish. Wings grayish-hyaline, the fourth longitudinal vein not broken. Male. The lamelle of the hypopygium whitish, of medium size and of an elongated, ovate shape, on the upper and apical margin narrowly bordered with black, on the latter much jagged and fringed with partly black, partly yellowish bristles. Hind femora upon the under side sparsely ciliated with very long yellowish hairs. Hind tibiew although somewhat, stout, but not thickened ; the two- thirds of their hind side from the base are without hairs. Fore tarsi over 14 times the length of the tibia ; their three first joints slender, stalk-like ; the second joint measures nearly three-fourths of the length of the first, and the third more than three-fourths of the length of the second ; the fourth joint is almost as long*as the third, flattened somewhat broader at the end, still even here not half as broad as it is long, white, with a handsome silvery reflec- tion; upon its upper margin with hardly visible short minute black hairs; the fifth joint is hardly shorter than the fourth, flat- tened, and somewhat broader than the previous one, black, beset upon the upper margin with short appressed minute black hairs. The costa near the tip of the first longitudinal vein with a not very considerable but quite distinct swelling ; the margin of the wing between the apex and the tip of the fifth longitudinal vein is less rounded than usual, so that there is a trace of a shallow sinus. Hab. New York. (Osten-Sacken.) Mass. (Sanborn. ) 19. D. tomsus Lorw. % and 9.—Aeneo-viridis, pedibus flavis, coxis ‘anticis tibiisque posticis totis concoloribus, antennis tarsisque posticis nigris, horum basi flava, ciliis oculorum inferioribus tegularumque ciliis flavicantibus, maris duobus ultimis tarsorum anticorum articulis dila- tatis et femoribus posticis non ciliatis. Metallic-green; fore coxe and feet yellow, the hind tibiw not darker at the tip; antenne and hind tarsi black, the latter at the basis yellow ; cilia of the inferior orbit and of the tegule yellowish ; in the % the two 48 DIPTERA OF NORTH AMERICA. [PART II. last joints of the fore tarsi enlarged, and the hind femora not ciliated. Long. corp. 0.26. Long. al. 0.20. Syy. Dolichopus tonsus Loew, Neue Beitr. VIII, 16, 12. Metallic-green, bright. Face of the ¢ narrow, more light ochre-yellowish than golden-yellow ; the face of the 2? broader and yellowish-white. Antenne entirely black, the lower corner of the first joint only lighter; the third joint short. Front green, or bluish-green, bright. Cilia of the inferior orbit yellowish. A bronze-colored middle line of the thorax is not distinct ; on each side before the transverse suture a bronze-colored spot. Tore coxe yellow, upon the anterior side with rather delicate minute black hairs, which gradually disappear towards their base. Hind F coxe only at the extreme tip yellow. Feet yellow; hind femora with a bristle before the tip. The coloring of the fore tarsi in the 2 gradually changes towards the tip into brown and black; mid- dle and hind tarsi black from the tip of the first joint, still the base of the second joint yellow. Cilia of the tegulee yellowish. Wings grayish-hyaline ; the fourth longitudinal vein not broken. Male. Wamelle of the hypopygium whitish, of medium size and of an elongated ovate form, on the upper and apical margin nar- rowly bordered with black, on the latter much’ jagged and fringed with partly black, partly yellowish bristles. Hind femora not ciliated upon the under side. Hind tibiz of ordinary stoutness ; their whole hind side uniformly beset with minute black hairs. The fore tarsi more than 14 times the length of the tibiz ; the three first joints slender, stalk-like; the second joint is equal to about two-thirds of the length of the-first, and the third to about three- fourths of the length of the second; the fourth joint is nearly as long as the third, flattened, at the end somewhat broader, still even here not half so broad as long, white, with a handsome sil- very reflection; upon its upper margin with hardly visible and short minute black hairs; the fifth joint as long as the fourth, flat- tened, and somewhat broader than the previous one, black, beset’ upon its upper margin with short and appressed minute black hairs. Costa near the tip of the first longitudinal vein without swelling; between the apex of the wing and the tip of the fifth longitudinal vein the margin shows a shallow sinus. Hab. Washington. (Osten-Sacken.) Observation.—The ? of the three species described above are DOLICHOPUS. 49 very easy to confound. The characters by which they can be dis- tinguished. are as follows: 1. for D. batillifer 9 : The costa near the tip of the first longitudinal vein with a slight trace of a swell- ing, perceptible only to a very attentive observer ; this swelling is rather elongated ; the apex of the wing somewhat broader than in the ? of the two other species; the fore coxee beset with rather coarse minute black hairs reaching almost to the base. 2. for D. eudactylus 2: The costa near the tip of the first longitudinal vein with a slight trace of a swelling, which has only a very trifling extent in length; the apex of the wing somewhat narrower than in D. batillifer, but somewhat broader than in D. tonsus; the fore cox covered with rather coarse minute black hairs reaching till very near the base. 3. for D. tonsus 2 : The costa near the tip of the first longitudinal vein without any trace of a swelling ; the tip of the wing somewhat narrower than in the two other spe- cies ; the black pubescence of the fore coxe more delicate and not reaching as far towards the base as in the two latter species. Whether the slight differences in the coloring of the tarsi, percepti- ble in the specimens of these species compared by me, are sufficient for their sure distinction, can only be decided by the examination of a larger number of specimens. 2. Antenne altogether or for the most part yellowish-red. 20. D. temer Lorw. 4,.—Viridis, facie ex flavo albida, antennis rufis, oculorum ciliis inferioribus tegularumque ciliis albidis, pedibus pallide flavis, ultime tarsorum anticorum articulo maris modice dilatato, nigro. Green ; face yellowish-white ; antenne red; cilia of the inferior orbit and of the tegule whitish; feet pale yellow; the enlarged last joint of the fore tarsi of the male black. Long. corp. 0.15. Long. al. 0.17. Syv. Dolichopus tener Louw, Neue Beitr. VIII, 17, 13. Green, bright. Face yellowish-white. Antenne yellowish-red, the apical margin of the third joint blackened ; arista with a very short but still perceptible pubescence. Front metallic-green, bright. Cilia of the inferior orbit whitish. Upper side of the thorax not very bright. Lamelle of the hypopygium white, rounded, slightly bordered with black, on the apical margin some- what jagged and fringed with black bristles. Coxe whitish-yellow, the middle ones upon the outside partly gray ; the fore ones have, besides the black bristles near their tip, only a very short and deli- 4 50 DIPTERA OF NORTH AMERICA. [PART II. cate white pubescence.* Feet whitish-yellow ; hind femora before the tip with a bristle, and upon the second half of their under side ciliated with six to seven very long yellowish-white hairs. Fore tibia long and slender ; hind tibize rather stout, but not thickened, only at the base of the hind side somewhat glabrous. Fore tarsi filiform, over 12 times the length of the tibiew; the four first joints pale-yellowish, their relative length about as 5: 4:3: 14; their fifth joint but little shorter than the fourth, somewhat flat- tened, black, beset upon its upper side with rather appressed black hairs. Middle and hind tarsi from the tip of the first joint brown- ish. Cilia of the tegule yellowish-white. Wings hyaline, rather narrow ; the costa near the tip of the first longitudinal vein with a distinct swelling ; the third longitudinal vein not broken ; the hind ' transverse vein perpendicular and straight. Hab. Chicago. (Osten-Sacken.) 21. D. wariabilis Lorw. % and 9.—Laete viridis, facie maris pal- lide aurea, prope os albida, facie foemine tota alba, antennis rufis, ocu- lorum ciliis inferioribus albidis, tegularum ciliis flavicantibus, pedibus flavis, alis cinereo-hyalinis. Handsome green; the face of the 4 pale golden-yellow, whitish below ; the face of the 2 white ; antennz red; cilia of the inferior orbit whitish, cilia of the tegule yellowish ; feet yellow ; wings grayish-hyaline. Long. corp. 0.19. Long. al. ¢.19. Syn. Dolichopus variabilis Lorw, Neue Beitr. VIII, 17, 14. Handsome green, bright. Face of the ¢ more pale gold-colored than ochre-yellowish, near the oral border whitish; face of the ° proportionally narrow, white. Antennee yellowish-red ; their third joint short, ovate, generally red only at the base and on the under side, otherwise brownish-black, sometimes brown only at the tip or entirely reddish-yellow. Front bright green. Fore cox yellow- ish-white, beset, besides the black bristles near their tip, with very delicate minute whitish hairs. Middle and hind coxe of the same color, but colored with black upon the greater part of the outside. Feet yellowish; hind femora before the tip with a bristle, in the g ciliated upon the under side with very long pale-yellowish hairs. Fore tarsi of the ¢ about 15 times the length of the tibiz ; those of the ? hardly as long as the tibiee, blackened from the tip of the first joint, plain also in the ¢. Middle tarsi of the same color 4s the fore tarsi. Hind tibiz also in the ¢ not stout, but DOLICHOPUS. 51 upon their basal half on the inside glabrous. Hind tarsi usually quite black ; sometimes their first joint, with the exception of the tip, is only brownish or even yellowish; more seldom the basis of their second joint has also the same lighter coloring. Cilia of the tegule yellowish. Wings grayish hyaline, of rather equal breadth ; the costa has in the ¢ near the tip of the first longitudinal vein a slight swelling ; the fourth longitudinal vein is not broken ; some- times the apical portion of the anterior part of the wings shows a somewhat stronger grayish tinge. Hab. New York. (Osten-Sacken.) Observation.—D. variabilis is more variable in the coloring of the posterior tarsi than is usually the case with the species of the genus Dolichopus. I have received a female as belonging to the variety of D. variabilis, having light feet, which has the tegule ciliated with black, and differs besides from the other females un- doubtedly belonging to D. variabilis, by the more clayish-yellow color of its wings. I cannot take it for the ? of the present spe- cies. In the coloring of the wings and in several other characters it approaches very much D. luteipennis, but as its hind tibiz are without blots, it may perhaps not even belong to this species. I possess also some other females which I can only distinguish from the above described ° of D. variabilis by their black ciliated tegule. It seems therefore that either the females vary in the coloring of the cilia, or that we have here two exceedingly similar species. 22. D. luteipennis Lorw. 4% .—Laete viridis, facie albida, antennis rufis, oculorum ciliis inferioribus albidis, tegularum ciliis flavicantibus, pedibus flavis, tarsis maris simplicibus, alis lutescentibus. Handsome green; face whitish; antenne red; cilia of the inferior orbit whitish ; cilia of the tegule yellowish ; feet yellow ; the fore tarsi of the %, plain; wings yellowish. Long. corp. 0.19. Long. al. 0.19. Syn. Dolichopus luteipennis Lonw, Neue Beitr. VIII, 18, 15. Handsome green, moderately bright. The color of the face whitish, only upon‘its upper part somewhat more yellowish. An- tenn yellowish-red; their third joint short-ovate, perceptibly in- fuseated at the tip. Front bright, green-blue. Cilia of the in- ferior orbit whitish. Upper side of the thorax dusted, and hence somewhat dull, with a rather distinct brassy-yellow middle line. The pubescence of the abdomen is whitish, not only on the lateral a 52 DIPTERA OF NORTH AMERICA. [PART it margin, as in the resembling species, but also upon the greater part of the upper side. Lamelle of the hypopygium of ordinary size, rounded-ovate, on the upper and apical margin narrowly bor- dered with black, the latter jagged and fringed with black bristles. Fore cox yellowish-white, and except some black bristles near their tip, beset with only very delicate minute whitish hairs. Mid- dle and hind coxee of the same color, the former darker only at the basis. Hind femora before the tip with a black bristle, upon the under side ciliated with about 6 to 7 yellowish hairs; hind tibie rather stout, but not thickened; in very dark colored specimens sometimes near the tip and also upon the fore and hind side with a little brown blot; upon their hind side only a short glabrous stripe, which does not reach to their middle; fore tarsi slender, plain, about 14 times the length of the tibie ; only their last joint black. Middle tarsi from the tip of the first joint brownish, to- wards the end blackish-brown, in paler specimens generally but moderately brownish. Hind tarsi generally entirely black, some- times paler towards the end of the first joint or also at the end of the second joint ; in the palest specimens brownish only towards the end. Cilia of the tegule yellowish. Wings rather dis- tinctly clayish-yellow ; veins clayish-yellow ; the fourth longitudi- val vein not broken; the costa near the tip of the first longitudi- nal vein with a little swelling. ’ Hab. Washington. (Osten-Sacken. ) Observation.—With regard to a female which may be taken for that of the present species, the necessary remarks have been made in the observation to the previous species. However un- usual the inconstancy in the coloring of the tarsi of D. luteipennis and of D. variabilis may be, I have no doubt that these varieties do not represent different species. At least the most attentive ex- amination of the specimens distinguished by the coloring of their feet, did not lead to the discovery of the slightest difference in the plastic characters in one as well as in the other species. B. Cilia of the tegulzx black. 1. Fourth longitudinal vein broken. a. Antenne black. 23. D.ramifer Lozw. % and ?.—Obscure viridi-aeneus, thoracis dorso aeneo-nigro, facie alb4, antennis nigris, ciliis oculorum inferioribus e DOLICHOPUS. 53 albidis, tegularum ciliis nigris, pedibus flavis, alarum vena longitudinali quarté appendiculata. Dark bronze-green, upper side of the thorax bronze-black ; face white ; an- tenn black; cilia of the lower orbit whitish ; cilia of the tegule yel- lowish; the fourth longitudinal vein with a stump of a vein. Long. corp. 0.13. Long. al. 0.13, Syy. Dolichopus ramifer Lozw, Neue Beitr. VIII, 19, 16. Dark bronze-green, the upper side of the thorax more bronze- black. Face of the ¢ nearly as broad as that of the 9, in both sexes white. Antenne black; the lower corner of the first joint colored somewhat lighter; in the ¢ the third joint is rather long elliptic with a pointed tip, and the apparently bare arista inserted quite near the tip; in the 2 it is perceptibly shorter, and has a less pointed tip, to which the arista is still more approximated. Front bluishtblack, very bright. Cilia of the inferior orbit whitish. Upper side of the thorax bronze-black, or more dark bronze-green. Abdomen somewhat coppery. Fore coxe dark yellow, at the extreme basis somewhat blackened, beset upon the fore side with short minute black hairs. Middle and hind cox blackish, dark yellow only at the tip. Feet dark yellow; the fore and middle tarsi from the tip of the second joint black; the hind tarsi, including the tip of the hind tibiz, black. The hind femora somewhat broad, before the end with a bristle. Cilia of the tegule black. Wings hyaline-gray ; the fourth longitudinal vein broken, so that its inferior angle is a right one and the superior is rounded, the former is supplied with a rather long stump of a vein. Male. Lamelle of the hypopygium white, rather small, round- ish, at the upper and apical margin only with an extremely nar- row dark border, on the latter but very little jagged and fringed with black bristles. Hind femora very sparsely ciliated with moderately long whitish-yellow hairs. Hind femora rather stout, the greater part of their hind side glabrous. Costa with a small swelling at the tip of the first longitudinal vein. Hab. Nebraska. (Dr. Hayden.) Lake Winnipeg. (Kennicott.) New Rochelle, N. Y. (Osten-Sacken.) b. Antenne yellowish-red. 24. D. bifractus Lorw. 4% and 9.—Aeneo-viridis, thoracis dorso pollinoso, opaco, abdomine cupreo-micante, facie albida, interdum ex flavo cinerea, antennis rufis, ciliis oculorum inferioribus albidis, ciliis tegularum nigris, alarum vena longitudinali quarta appendiculata. 54 DIPTERA OF NORTH AMERICA. {PART II. Bronze-green ; upper side of the thorax not very bright, dull; abdomen with a coppery-red reflection ; face whitish, sometimes more yellowish- gray ; antenne red; cilia of the inferior orbit whitish ; cilia of the tegule black; the fourth longitudinal vein with a stump of a vein. Long. corp. 0.22. Long. al. 0.17. Syn. Dolichopus bifractus Loew, Neue Beitr. VIII, 19, 17. Bronze-green, but little shining. Face whitish, in not recently ~ excluded specimens generally more yellowish-gray ; in the ¢ it is not much narrower than in the 2. Antenne red; their third joint ovate, somewhat broad ; at the point of insertion of the arista it is somewhat swollen and blackened; its apical half is often brownish. Arista with a very short but distinct pubescence. Front bronze-green, but opaque, on account of a very delicate light brownish-gray dust. Cilia of the inferior orbit whitish. Upon the upper side of the thorax the ground color, although bronze- green, is quite opaque, on account of a dense brownish-gray dust, which in fresh, not denuded specimens, altogether conceals it. Abdomen brighter metallic-green, in not recently excluded speci- mens rather coppery. Coxe and feet yellow; the middle coxe up to the tip gray; the front side of the fore cox sparsely beset with delicate minute black hairs, glabrous towards the basis. Iiind femora before the tip with a bristle. Fore tarsi brownish, only the last joints really black. Middle tarsi from the tip of the first joint blackish; the extreme tip of the hind tibiee, including the whole hind tarsi, black. Cilia of the tegule black. Wings with a rather dark grayish tinge ; on the anterior margin and along the veins generally somewhat brownish; the fourth longitudinal vein broken twice at right angles; both angles sharp; as an ex- ception, the upper one sometimes slightly rounded; at the lower angle there is generally a stump of a vein, whilst the upper one for the most part has none. Male. Wamelle of the hypopygium white, of moderate size, rather rounded, on the upper and apical margin narrowly bor- dered with black, on the latter somewhat jagged and fringed with black bristles. Fore tarsi 14 times the length of the tibie ; first joint somewhat longer than the second and third taken together ; fourth and fifth joints black, somewhat flattened, the upper edge of the fifth bearded with close black hairs. Hind tibie plain, their hind side not glabrous. Hab. Chicago. (Osten-Sacken.) Nebraska, (Dr. Hayden.) DOLICHOPUS. 55 25. D. vwittatus Lorw. 4% .—Aeneo viridis, thoracis lined media vit- tisque lateralibus orichalceis, facie albida, antennis rufis, ciliis oculorum inferioribus albidis, tegularum ciliis nigris, pedibus flavis, tarsis maris simplicibus, alarum vena longitudinali quarta fracté et appendiculata. Bronze green; middle line and the two lateral stripes of the thorax brassy yellow; face whitish; antenne red; cilia of the inferior orbit whitish ; cilia of the tegule black; feet yellow; tarsi of the 4% plain; fourth longitudinal vein broken and furnished with a stump. Long. corp. 0.26—0.27. Long. al. 0.25—0.26. Syy. Dolichopus vittatus Lozw, Neue Beitr. VIII, 20, 18. Bronze green, shining. Face rather broad for a ¢, whitish. Antenne red, apical half of the third joint somewhat infuscated ; arista with a short, distinct pubescence. Front metallic green, or greenish-blue, shining. Cilia of the inferior orbit yellowish- white. Upper side of the thorax green or blue, with a conspicu- ous, almost golden-yellow or more copper-colored middle-line, and with similar lateral stripes. Lamelle of the hypopygium white, of moderate size, narrow-ovate in shape, with a narrow black margin on the upper and the apical edge; the latter jagged and fringed with black bristles. Cox and feet pale yellowish; the fore coxe are beset on their anterior and inner side with numerous, on the outer side with very scarce, small, black hairs, besides the white pubescence which clothes them ; the middle cox upon the greater part of their outside blackish. Hind femora before their end with a bristle. Hind tibie of the ordinary size, upon their hind side with a glabrous stripe, which extends beyond their second third. Fore tarsi plain, only very little longer than the tibi, from the middle of the third joint black; the middle and hind tarsi are black from the tip of the first joint. Wings grayish-hyaline, towards the fore margin somewhat more brown; costa near the tip of the first longitudinal vein with a very thick swelling ; fourth longitudinal vein broken; superior angle of the fracture rounded, inferior one with only a short stump. Hab. Chicago; Genessee, N. Y. (Osten-Sacken.) 26. D. cuprinus Wiep. % and 9.—Aeneo-viridis, thoracis lined media vittisque lateralibus orichalceis, facie ex flavo albida, antennis rufis, ciliis oculorum inferioribus albidis, tegularum ciliis nigris, pedi- bus flavis, tarsorum anticorum apice in mare dilatato, alis basim versus non angustatis, vena longitudinali quarta fracta. 56 DIPTERA OF NORTH AMERICA. [PART ES Metallic green, middle line and lateral stripes of the thorax brassy yellow ; face yellowish-white; antenne red; cilia of the inferior orbit whitish, cilia of the tegule black; feet yellow; tip of the fore tarsi of the 4 en- larged; wings towards the base not narrowed ; fourth longitudinal vein broken. Long. corp. 0.25—0.26. Long. al. 0.24. | Syn. Dolichopus cupreus Say, Journ. Ac. Philad. II, 86, 9. Dolichopus cuprinus WiEDEMANN, Zweifl. II, 230, 1.—Watxer, List III, 660.—Lorw, Neue Beitr. VIII, 20, 19. Metallic green, shining. Face whitish, with a more or less yel- lowish tinge, particularly that of the ¢, which is considerably narrower than that of the 2. Antenne yellowish-red, the apical half of the third joint often infuseated. Arista with short but distinct pubescence. Front shining, bluish-green. Cilia of the inferior orbit whitish-yellow. Upper side. of the thorax green, often bluish-green, seldom blue, with a conspicuous yellow brass- colored, sometimes copper-colored middle line and with similar lateral stripes. Abdomen usually more bronze-green or coppery. Coxe and feet pale yellowish; fore coxe only on the inner margin of their anterior side with sparse minute black hairs, which are more distinct in the @ than in the ¢; middle cox upon the ereater part of their outside, blackish. Hind femora with a bris- tle before the tip. Fore tarsi from about the middle of the third, middle and hind ones from the tip of the first joint, blackened. Cilia of the tegule black. Wings tinged with gray, towards the fore margin more grayish-brown, not more narrowed than usual towards the base; the fourth longitudinal vein broken, so that its inferior angle is a sharp right one and the superior is rounded ; the former is supplied with a short stump of a vein. Male. Lamelle of the hypopygium of moderate size and of elongated-ovate form, white, narrowly bordered with black on the upper and apical margin; the latter jagged and beset with black bristles. Hind femora upon the second half of their under side sparsely ciliated with very long yellowish hairs. Hind tibize not thickened, upon their hind side with a glabrous stripe extending beyond the middle. Fore tarsi not one and a half times the length of the tibiee, two first joints stalk-like; first joint nearly one and a half times the length of the second; three last joints slightly flat- _tened, third joint upon its upper side very densely fringed with longer, the fourth with somewhat shorter black hairs; the three DOLICHOPUS. BF, last joints of the tarsi are about as long as the second; the two last ones as long as the third. Hab. Middle States. (Osten-Sacken.) Nebraska. (Dr. Hayden.) Observation.—The determination of this species, the most common in the Middle States, is not doubtful when we compare the descriptions of Say and Wiedemann, which serve to complete each other. The @ is easily distinguished from that of D. longi- pennis by its less narrowed basis of the wings. Its distinction from the as yet unknown @ of D. vitiatus must be very difficult, unless perhaps the proportional length of their feet affords an avail- able mark of distinction. Two males measuring only 0.23 in length resemble in all plastic characters the ¢ of D. cuprinus so much that I take them merely for asmallervariety. A single, un- fortunately not well-preserved ¢, distinguished by a somewhat larger size, may perhaps constitute a particular species, as the fourth longitudinal vein is less broken, and the three last joints of the fore tarsi are a little broader. It would not be safe, however, to decide upon a single specimen. 27. D. Lomgipemmis Lorw. % and 9.—Aeneo-viridis, thoracis linea media vittisque lateralibus orichalceis plerumque subobsoletis, facie ex flavo albida, antennis rufis, ciliis oculorum inferioribus albidis, tegularum ciliis nigris, pedibus flavis, maris tarsorum anticorum apice dilatato et alis basim versus valde angustatis. Metallic green; middle line and lateral stripes of the thorax of a brassy- yellow color, however, mostly indistinct; face yellowish-white; anten- ne red; cilia of the inferior orbit whitish; cilia of the tegule black ; feet yellow; the tip of the fore tarsi of the male enlarged and its wings very much narrowed towards the basis. Long. corp. 0.26. Long, al. 0.26—0.27. Syy. Dolichopus longipennis Lozw, Neue Beitr. VIII, 21, 20. Bronze green, shining. Face white, often more or less yellow- ish. Antenne red, the second half of the third joint sometimes infuseated. Arista with a rather short but very distinet pubescence. Front shining, green or blue. Cilia of the inferior orbit whitish- yellow. Upper side of the thorax with a brass-colored middle line and similar lateral stripes, which, however, are less distinct than in the two previous species. Abdomen often very coppery, par- ticularly upon its posterior half. Coxe and feet pale yellowish ; fore cox only on the inner margin of their anterior side with a 58 DIPTERA OF NORTH AMERICA. [PART II. few indistinct minute black hairs; middle cox upon the greater part of their outside grayish. Hind femora before the tip with a bristle. Fore tarsi blackened from the middle of the third joint ; middle and hind tarsi infuscated from the tip of the first joint, and towards their end gradually colored with black. Tegule with black cilia. Wings tinged with gray, towards the fore mar- gin more yellowish-brown, towards the basis narrower than in the related species ; the fourth longitudinal vein not so much broken as in the two previous species, the lower angle of the fracture generally without stump, yet sometimes with a very short one. Male.—Lamelle of the hypopygium of moderate size and of an elongated ovate form, on the upper and apical margin bordered with black ; the latter one very much jagged and fringed with black bristles. Hind femora not ciliated. Hind tibie not thick- ened, hairy upon their entire hind side. Fore tarsi somewhat longer than the tibiz ; two first joints stalk-like, the first hardly one and a quarter the length of the second; the three last joints taken together hardly longer than half the second joint, but very little flattened, tinged with black beyond the middle of the third joint; the third joint upon its upper edge densely fringed with longer, the fourth with somewhat shorter, black hairs. Wings of a remarkable length, unusually narrow near the basis; still their rounded anal angle projecting almost in the shape of a lobe ; the costa near the tip of the first longitudinal vein with a but slight swelling. é Hab. Middle States; Washington, D. C. (abundant in June; Osten-Sacken) ; Chicago (id.). Observation.—I am in possession of a 2? which was communi- cated to me as that of the present species, but which I consider as that of D. scapularis. As D. longipennis sometimes occurs without distinct fracture on the fourth longitudinal vein, so it happens, on the contrary, that in some specimens of D. scapularis the fourth longitudinal vein is somewhat broken; they are how- ever easily distinguished from D. longipennis by the pale color- ing of their humeral callosities. The latter differs besides from the females of all related species by its wings, which are somewhat narrowed at the basis. DOLICHOPUS. 59 2. Fourth longitudinal vein not broken. a, Antenne*red, at the utmost the third joint at the tip or almost entirely black. a. Humeral callosities of the same color with the thorax. 28. D. hastatus, nov. sp. 4% and ?.—Viridis, antennis rufis, arti- culo tertio ex parte nigro, ciliis oculorum inferioribus flavis, tegularum ciliis nigris, pedibus flavis, tibiis intermediis maris ante apicem per- spicue, foemine obsoletissime albido-notatis, tarsis intermediis maris apicem versus compressis, feemine subcompressis, alarum vena, longi- tudinali quarta non fracta. 5 Green; antenne red; third joint partly black; cilia of the inferior orbit yellow, cilia of the tegule black, feet yellow ; middle tibie before the tip with a white spot, which is very distinct in the 3, and indistinct in the 9 ; middle tarsi strongly flattened towards the tip in the $, and more slightly in the ? ; fourth longitudinal vein not broken. Long. corp. 0.22. Long. al. 0.22—0.23. This species, distinguished by many peculiar marks, resembles in the structure of the ¢ arista D. sagittarius Loew, from Sibe- ria. Bronze-green, shining. Face of the ¢ narrow and brassy- yellow ; the face of the 2 is much broader, and has a grayish-yel- low tinge. Palpi yellow, in the 9 towards the basis blackish. Antenne reddish-yellow; their third joint short and rather rounded ; its apical half black or brown; the arista of the ? is plain and rather stout ; that of the ¢ is longer and more slender, enlarged at the tip into the shape of a lancet-like lamel pointed on both sides, the tip of which has a dingy-whitish coloring. Front shining bluish-green. Cilia of the inferior orbit yellow. Fore coxe yellow, upon the anterior side with a delicate black pubes- cence. Middle and hind coxe grayish-black, only the extreme tip and the trochanter yellow. Feet yellow. Hind femora before the tip with a bristle. Middle tibiz with black tip, and before it, in the ¢, upon the upper side with a whitish spot, of which there is hardly a trace in the 2. Hind tibiex at the tip blackish-brown, in the ¢ upon the hind side with a narrow, linear, hardly distinct glabrous stripe. The tarsi have the tip of the first joint, the four following joints, and besides, the base of the first joint of the mid- dle tarsi, black ; the three last joints of the middle tarsi of the ¢ are distinctly, although not very strongly, flattened; this is also the case in the 2, but less perceptibly so; this part of the middle tarsi viewed from the side seems distinctly stouter than 60 DIPTERA OF NORTH AMERICA. [PART I. when it is seen from above or below. The first joint of the hind tarsi with only two thorn-like bristles. Cilia of the tegule black. Wings grayish-hyaline ; the last segment of the fourth longitudinal vein is inflected before its middle but not broken. The wings of the g are somewhat narrower than those of the ?, and have be- fore the anal angle a very remarkable large bisinuated excision, so that the angle assumes the shape of an independent lobe-like appendage. Lamelle of the hypopygium of moderate size, rounded-ovate, whitish, with a rather broad black border, on the upper and apical margin jagged and fringed with black bristles. Hab. Sitka. (Sahlberg.) 29. D. plumipes Scop. % and §.—Viridis, humeris concoloribus, antennis rufis, articulo tertio preter basim nigro, facie aurea, ciliis ocu- lorum inferioribus flavis, tegularum ciliis nigris, pedibus flavis, articulo tarsorum intermediorum primo maris setulis nigris pennato, alarum vena longitudinali quarta non fracta. Green, including the humeral callosity ; third joint of the red antennz with the exception of its basis, black; face golden-yellow ; cilia of the inferior orbit yellow; cilia of the tegule black; feet yellow; first joint of the middle tarsi of the % feathered with black bristles; fourth lon- gitudinal vein not broken. Long. corp. 0.17—0.16. Long. al. 0.18. Syn. Musca plumipes Scopout, Ent. Carn. 334, 895. Dolichopus pennitarsis, FALLEN, Dolich. 11, 16.—MericEn, Zweifl. IV, 90, 29.—Macquart, Suites, I, 446, 34.—Sranntvs, Isis, 1831, 63, 14. ZetTeRsTEDT, Ins. Lapp., 709, 9.—Srarcer, Kroyer’s Tidsskr. 30, 21.—Zetterstept, Dipt. Scand. II, 541, 35. Dolichopus plumipes WALKER, Dipt. Brit. I, 162, 16. Metallic-green, sometimes somewhat coppery. Antenne yel- lowish-red, third joint, excepting its basis, blackened ; that of the & ovate, with a rather sharp angle at the end; that of the 9 shorter. Front metallic-green. The face reaches lower here than in most other species of Dolichopus ; that of the ¢ is rather nar- row and golden-yellowish ; that of the 2 is broad and pale-gray- ish, dusted with whitish-yellow. -Palpi yellow. Cilia of the in- ferior orbit yellow. Fore coxe yellow, with a black pubescence anteriorly ; middle and hind coxe blackish, the extreme tip and the trochanter yellow. Feet yellow. Hind femora with a bristle before the tip. The middle tibie are but slightly infuscated near the tip; the tip of the hind tibiz is somewhat blackish, this color occupying but a narrow extent. Fore and hind tibie plain in DOLICHOPUS. G1 both sexes; the middle tibia only in the 2; in the ¢ they are remarkably slender, only somewhat stouter at the basis and near the tip; on the upper side with a blackish-brown longitudinal line, which reaches from the incrassation at the base to that at the tip ; they show besides, just before the apical incrassation, a small whitish, not always distinct, crossband. Fore and hind tarsi plain in both sexes; the former from the tip of the first joint, the latter altogether, black; middle tarsi also altogether black, plain in the 2 ; their first joint in the ¢ is somewhat incrassated and densely ciliated on both sides with obliquely inserted black bristles. Cilia of the tegule black. Wings grayish-hyaline ; fourth longitudinal vein not broken; in the @ they have the usual shape; in the ¢ the hind margin has a sinuated excision before the anal angle. The yellowish-white lamelle of the hypopygium are of moderate size, elongated-ovate, narrowly bordered with black, fringed with black bristles along the upper and apical edge ; the latter is some- what jagged. Hab. Sitka. (Sahlberg.) Observation.—I have been able to compare a considerable num- ber of North American specimens of this species, and do not find any difference between them and the European ones. At first it appeared to me that the arista of the former ones was perceptibly stouter than that of the latter. A more close examination showed, however, that this difference was merely illusory and produced by some dust on the American specimens in my possession. The appendages of the hypopygium of the North American specimens are likewise precisely similar to those of the European ones. 30. D. fulvipes Lorw. %.—Viridis, nitidus, facie aured, antennis fulvis, articulo tertio preter basim nigro, ciliis oculorum inferioribus flavis, tegularum ciliis nigris, coxis anticis pedibusque fulvis ; tibiarum intermediarum apice albo; tarsis intermediis simplicibus. Green, shining ; face golden-yellow ; antennz dark yeilow, third joint, ex- cept its basis, black ; cilia of the inferior orbit yellow ; cilia of the tegule black ; fore cox and feet dark yellow, tip of the middle tibiw white ; middle tarsi plain. Long. corp. 0.23. Long. al. 0.24. Syn. Dolichopus fulvipes Lorw, Berl. Ent. Zeit. VI, 512, 61. Metallic-green, shining. Face golden-yellow, rather narrow. Antenne saturate dark yellow ; third joint elliptical, not rounded at tip, black, with yellow basis. Front metallic-green. Cilia of 62 DIPTERA OF NORTH AMERICA. [PART I. the inferior orbit yellow. Lamelle of the hypopygium rather small, ovate, whitish, with a narrow black border, jagged at the tip and with black bristles round the edge. Fore coxe saturate dark yellow, with black hairs; the four posterior coxe blackish with a dark yellow tip; the rather stout feet also dark yellow; hind femora with a bristle before the tip; the middle tibiz have at the tip, on the upper side, a whitish, distinctly swollen spot, which is bare of any hairs or bristles ; upper side of the hind tibiz with numerous “bristles; there is no glabrous spot on their hind side. Tarsi plain; the four anterior ones are blackened from the tip of the first joint ; the base of the second, sometimes also of the third joint, remain however pale; the hind tarsi are altogether black. Cilia of the tegule black. Wings grayish-hyaline, with a wide sinus on the hind margin, before the anal angle; costa hardly thickened near the tip of the first longitudinal vein; the last portion of the fourth longitudinal vein considerably inflected about the middle, without being broken. Hab. Mlinois. (Le Baron.) White Mountains, N. H. (Osten- Sacken. ) oi. D. sexarticulatus, n. sp. %.—Aureo-viridis, nitidus, anten- nis rufis, ciliis oculorum inferioribus flavicantibus, ciliis tegularum nigris, coxis omnibus pedibusque flavis, tarsis posterioribus inde ab articuli primi apice ex fusco nigris, alarum vena longitudinali quarta non fracta. *,. Hypopygii apice flavo, lamellis albis late nigro-limbatis, tarsorum an- ticorum articulis tribus primis elongatis, flavis, articulis ultimis duobus brevibus compressis, penultimo toto atro, ultimo in basi atro, in apice niveo et appendicula lamelliformi, cum articulo ipso concolore, instructo. Sone eh Gold-green, shining; antennz red, cilia of the inferior orbit yellowish, on the tegulz black; all coxe and feet yellow, the middle and hind tarsi from the tip of the first joint brownish-black ; the fourth longitudinal vein not broken. *. Tip of the hypopygium yellow, lamelle white with a broad black border ; the three first joints of the fore tarsi elongated, yellow, the two last ones short and broadly flattened; the penultimate entirely black ; the last one black at the basis, snow-white at the tip, provided with a lamelliform appendage of the same color with this joint. QO) os) ) Se oie!) hong. corp Ol22 ae longa Orn: Golden-green, rather shining, still the thorax rather distinctly dusted with ochre-yellow; front steel-blue; scutellum greenish- DOLICHOPUS. 63 blue. Antenne yellowish-red, the short third joint more brown- ish-red. The narrow face ochre-yellow. Cilia of the inferior orbit pale yellowish. Cilia of the tegule black. Hypopygium of moderate size, the basal half metallic-green or green-blue, the apical half yellow; the lamelle rather large and broad, with a rather broad black border, fringed with black on the upper mar- gin only ; jagged as usual, on the apical margin and beset with crooked black bristles. Fore coxte entirely yellow, with a delicate and short pubescence ; near the tip with black bristles. Middle and hind cox of the same color, still the former more or less blackish at the basis. Femora and tibiz yellow; hind femora upon the front side before the tip with a stout bristle ; all femora glabrous upon their underside. Fore and middle tibiz plain, rather slender, moderately bristled. Hind tibiz very stout, thickened upon the basal half and with a large glabrous spot upon their hind side. Fore tarsi slender and nearly twice as long as the tibie ; the elongated, but plain, three first joints yellow, of much decreasing length, the fourth joint deep black, short, broadly flattened, triangular; the fifth joint of the same shape, hardly some- what longer than the fourth, deep black at the basis, snow-white at the broad tip; the ungues, pulvilli and empodium inserted at its lower end are of the ordinary structure ; at the upper end there is a distinct elliptical lamel, which, like the joint itself, is deep black at the basis, and snow-white at the tip. Wings grayish- hyaline, rather narrow towards the basis; near the tip of the first longitudinal vein there is but a slight trace of a swelling of the costa; the latter, however, is rather stout from this point to the tip of the wing; the last segment of the fourth longitudinal vein is only moderately inflected upon its middle. Hab. District Columbia. (Osten-Sacken. ) 32. D. ruficornis Lorw. 4% .—Viridis, humeris concoloribus, anten- nis rufis, oculorum ciliis inferioribus albis, tegularum ciliis nigris, pedi- bus flavis, articulo tarsorum anticorum ultimo dilatato, alarum vena longitudinali quarta non fracta. Green, including the humeral callosities ; antennz red ; cilia of the inferior orbit white ; cilia of the tegule black ; feet yellow ; last joint of the fore tarsi enlarged ; fourth longitudinal vein not broken. Long. corp. 0.19. Long. al. 0.18. . Syn. Dolichopus ruficornis Lozw, Neue Beitr. VIII, 21, 21. 64 DIPTERA OF NORTH AMERICA. [PART If, Green, rather shining. Antenne red; third joint somewhat longer than the two first taken together, of rather equal breadth : arista distinctly pubescent. Front bright bluish-green. Cilia of the inferior orbit whitish. Humeri of the same color as the remainder of the upper surface of the thorax. Upper side of the abdomen more golden green; the whitish pubescence on its sides occupies more space than usual.. Lamelle of the hypopygium of the ordinary size and rather rounded in shape, white, with a rather narrow black border along the upper and apical edge; the latter jagged and fringed with black bristles. Cox and feet pale yel- lowish ; anterior side of the fore coxe only with a very delicate whitish pubescence ; middle cox with a blackish spot on their outside. Hind femora with a bristle before the tip and sparsely ciliated with long yellowish-white hairs on the latter half of their under side. Hind tibiz of ordinary thickness, on their hind side only with a very short glabrous stripe near the basis. Fore tarsi more than once and a half the length of the tibi, slender ; the four first joints stalk-like, yellowish ; the two first joints, taken together, are somewhat longer than the tibia; the joints diminishing in length and stoutness from the first to the third; the fourth joint is equal to about one-third of the length of the third and is only slightly stouter than the latter; the fifth joint is black, as long as the fourth, somewhat flattened and bearded on its upper side with dense, somewhat incumbent, short, black hairs. Wings rather yellowish-gray, somewhat narrowed near the basis; the fourth longitudinal vein not broken; costa only slightly thickened at the tip of the first longitudinal vein. Hab. Middle States. (Osten-Sacken. ) Observation.—lIf in determining a female specimen, this species is hit upon, and if its wings, instead of being yellowish gray, are distinetly gray, then it will be necessary to compare what has been said about such females in the observation to the twenty- first species. 8. Humeral callosity yellowish. 33. D. scapularis Lorw. % and 9.—Viridis, humeris flavis, facie albida, antennis rufis, oculorum ciliis inferioribus albidis, ciliis tegula- rum nigris, pedibus flavis, tarsis maris simplicibus, alarum vena longi- tudinali quarté non fracta. Green with yellowish humeri; face whitish; antenne red; cilia of the DOLICHOPUS. 65 inferior orbit whitish; cilia of the tegule black; feet yellow; tarsi of the % plain ; fourth longitudinal vein not broken. Long. corp. 0.25— 0.26. Long. al. 0.25—0.26. Syn. Dolichopus scapularis Lozw, Neue Beitr. VIII, 22, 22. Bright-green or bluish-green, the abdomen more golden-green, especially towards its tip, sometimes rather coppery. Face whitish, in the ¢ generally somewhat yellowish upon the upper half. Front shining, generally bluish-green, seldom green or blue. Antenne yellowish-red; third joint short-ovate; generally slightly infuscated at the tip; arista distinctly pubescent. Cilia of the inferior orbit yellowish-white. Humeral callosity yellowish. The callosity between the root of the wing and the scutellum and generally also the margin of the latter are of the same color. Coxe and feet pale yellowish; the front side of the fore coxe is beset with delicate whitish hairs; there are some short minute black hairs on their inner side only, which however are not always easily discernible in the ¢. Middle coxe upon their outside with an elongated blackish spot. Hind femora with a bristle before the tip. The two last joints of the fore tarsi of the ? are black- ish-brown, still the brown color often begins already before the tip of the third joint and the tips of the first and second joints are also often somewhat dnfuscated ; in pale-colored specimens the coloring of the middle and hind tarsi is the same, whilst in darker ones the distinct brown color begins already in the middle of the first joint. Cilia of the tegule black. Wings grayish, towards the fore margin somewhat yellowish-brown ; fourth longitudinal vein not broken, still the inferior angle of the flexure is some- times not rounded. Male. Lamelle of the hypopygium of moderate size, rather rounded, on the upper and apical margin with a rather broad black border, on the latter jagged and fringed with black bristles. Hind femora upon the second half of their under side ciliated with moderately long yellowish hairs. Hind tibie of the usual thick- ness, upon the hind side with a glabrous stripe, which reaches nearly to their middle. Fore tarsi somewhat over once and a quarter the length of the tibiz, their joints decreasing in length, the last one somewhat more pale at the tip. Costa near the tip of the first longitudinal vein with a very slight swelling. Hab.—Middle States; District Columbia (in June; Osten- Sacken); Llinois. 5 66 DIPTERA OF NORTH AMERICA. [PART LT 34. D. fumditor Lorw. % and 9. Viridis, humeris flavis, facie albida, antennis rufis, ciliis oculorum inferioribus albidis, tegularum ciliis nigris, pedibus flavis, tarsorum anticorum articulis duobus ultimis in mare dilatatis, alarum vena longitudinali quarta non fracta. Green, with yellowish humeri; face whitish; antenne red; cilia of the inferior orbit whitish; cilia of the tegule black; feet yellow, the two last joints of the fore tarsi of the % enlarged; fourth longitudinal vein not broken. Long. corp. 0.25. Long. al. 0.25. Syn. Dolichopus funditor Lozw, Neue Beitr. VIII, 22, 23. Bright green or blue-green, the abdomen more golden-green, especially towards its end, sometimes rather coppery. Face whitish, in the ¢ generally somewhat yellowish upon the upper half. Front shining, generally blue-green, seldom blue or green. Antenne yellowish-red ; third joint short-ovate, generally slightly infuscated at the tip; arista with a distinct pubescence. Cilia of the inferior orbit yellowish-white. Humeral callosity yellowish. The callosity between the root of the wing and the scutellum is usually of the same color and generally also the margin of the latter. Coxe and feet pale yellowish; the front side of the fore coxee is beset with delicate white hairs; on their inner side there are also some short black hairs, which however are not always distinct in the ¢. Middle coxe with an elongated blackish spot upon their outside. Hind femora with a bristle before the tip ; two last joints of the fore tarsi black-brown in the 9, still this brown color often begins before the tip of the third joint and the tip of the first and second joint also are usually somewhat infus- cated; pale colored specimens have the same coloring on the middle and hind tarsi, whilst in darker specimens a distinct infus- cation already begins in the middle of the first joint. Wings grayish, somewhat more yellowish-brown towards the fore margin ; fourth longitudinal vein not broken. Male. Wamelle of the hypopygium of medium size, rather rounded, white, on the upper and apical margin with a narrow black border, on the latter jagged and fringed with black bristles. Hind femora upon the second half of the under side ciliated with not very long yellowish hairs.. Hind tibiae somewhat more slender than in the ¢ of the previous species, upon their hind side with a glabrous stripe extending beyond their middle. Fore tarsi once and a quarter the length of the tibie; the three first joints of moderate size and of decreasing length; fourth joint flattened, DOLICHOPUS. 67 black, on its upper edge fringed with close black hairs; the fifth joint still more flattened, ovate, snow-white, upon its upper side with very short and fine minute snow-white hairs. The costa at the tip of the first longitudinal vein only with an insignificant swelling Hab. Middle States. (Osten-Sacken. ) Observation.—Of this and of the preceding species I possess so many specimens taken together that I can entertain no doubt about having the 2 of both before me. Unfortunately I found it impossible as yet to discover any reliable character to distinguish these females. b. Antenne black, at the utmost the greater part of the first joint red. 35. D. chrysostomus Lorw. %4.—Viridis, facie aurea, antennis nigris, ciliis oculorum inferioribus albidis, tegularum ciliis nigris, pedi- bus flavis, tarsis maris simplicibus. Green; face golden-yellow; antennz black; cilia of the inferior orbit whitish ; cilia of the tegule black; feet yellow; tarsi of the % plain. Long. corp. 0.18. Long. al. 0.17. Syy. Dolichopus chrysostomus Lozw, Neue Beitr. VIII, 23, 24. Green, shining. Face narrow, dark golden yellow. Antenne altogether black; third joint elongated-ovate with a pointed tip ; arista rather slender with a somewhat imperceptible pubescence. Front shining blue-green. Cilia of the inferior orbit whitish. Upper side of the thorax but little dusted; on each side, at the transverse suture, with a coppery-brown spot. Abdomen with rather apparent dark incisures, which, in fully colored specimens, are margined with coppery-red. The lamelle of the hypopygium are large, rounded, yellowish-white, with a not very narrow black border on the upper and the apical edges; the latter is jagged and fringed with black bristles. Fore coxe yellow, somewhat blackened only at the ‘base, clothed anteriorly with short black hairs, middle and hind coxe blackish, their extreme tip only yel- low. Feet yellow. The hind femora with a bristle before the tip and with short yellowish hairs on the underside, although not ciliated with them in the true sense of the word. Hind tibie not stout ; their posterior side without glabrous stripe. Fore tarsi plain, but little longer than the tibie, gradually infuscated towards the tip. Middle and hind tarsi infuscated from the tip of the first joint ; however the second and third joints of the middle and the 68 DIPTERA OF NORTH AMERICA. [PART II. second joint of the hind tarsi, except its tip, are still rather pale. Tegule with black cilia. Wings tinged with gray; more brown- ish-gray along the anterior border; costa with a hardly perceptible thickening at the tip of the first longitudinal vein; fourth longi- tudinal vein not broken. Hab. Washington, D. C. (Osten-Sacken.) 36. D. praeustus Lorw. 4% .—Aeneo-viridis, nitens, facie ex cinereo ochracea, antennis nigris, ciliis oculorum inferioribus albidis, tegularum ciliis nigris, pedibus testaceis, litura femorum anteriorum, femorum posticorum apice, tarsis anterioribus inde ab articuli primi apice, tarsis posticis totis cum tibiarum posticarum apice nigris, alarum ex cinereo hyalinarum apice nigro. Bronze-green, shining; face grayish ochre-yellow; antenne black; cilia of the inferior orbit whitish; cilia of the tegule black; feet luteous- yellowish; a stripe on the fore-femora, the tip of the hind femora, the tour anterior tarsi from the tip of the first joint, and the hind tarsi altogether, as well as the tip of the hind tibiw, black; the tip of the grayish-hyaline wings black. Long. corp. 0.21. Long. al. 0.21. Syn. Dolichopus preustus Loew, Berl. Ent. Zeitschr. VI, 212, 62. Bronze-green, shining. Face grayish-yellow. Antenne alto- gether black; their third joint short. Front metallic green, some- what dusted and therefore but little shining. Occipital bristles very long. Cilia of the inferior orbit whitish. Last segments of the abdomen generally somewhat colored with coppery. Lamelle of the hypopygium of medium size only, broad, with very rounded upper border, white, bordered with black, bristly along the upper and apical edge; the latter somewhat jagged. Coxe blackish, their tip brownish-yellow ; the fore coxee with a grayish-white dust and hairy with black. Feet brownish-yellow ; the fore femora on the under side with a brownish-black longitudinal stripe; the hind femora before the tip with a black bristle and tinged with black on the upper side of the tip; the delicate hairs on their under side are somewhat longer than in many other species, although they cannot be called cilia. The hind tibiz are blackened towards the tip, and have, towards the end of the upper side, a rather dis- tinct dimple or impression; their hind side has no glabrous stripe. Tarsi plain, the four anterior ones from the tip of the first joint, the two hind ones altogether black. Cilia of the tegule black. Wings grayish hyaline, the extreme tip of the wing black; the . POLICHOPUS. 69 third longitudinal vein is somewhat directed backwards towards its end, so that its tip is nearer to the tip of the fourth vein than is usual in other species; the last portion of the fourth longitudi- nal vein is almost straight; on the spot where its usual flexure is situated, the surface of the wing is distinctly convex; costa but indistinctly thickened at the tip of the first longitudinal vein. Hab. Illinois; (Le Baron.) Observation.—It is to be presumed, judging from the analogy of similar European species, that the 2 of D. preustus has no black spot at the tip of the wing. 37. D. comatus Lorw. 4% and 9.—Viridis, facie candida, antennis nigris, ciliis oculorum inferioribus albis, tegularum ciliis nigris, pedibus flavis, femorum posticorum apice superne nigro, alarum vena longitu- dinali quarta non fracta. Green, face snow-white, antenne black; cilia of the inferior orbit white; cilia of the tegule black; feet yellow, the tip of the hind femora black above; the fourth longitudinal vein of the wings not broken. Long. corp. 0.17. Long. al. 0.16. Syn. Dolichopus comatus Lorw, Neue Beitr. VIII, 23, 25. Green or bronze-green, shining. Face snow-white, that of the 2 rather broad. Antenne altogether black, the third joint short- ovate; arista with an almost imperceptible pubescence ; cilia of the inferior orbit white. Front shining green. Abdomen with distinct dark incisures. Fore coxe yellow, blackened only at their very base; in the % their inner side and their tip only, in the 9 ‘almost the whole anterior side is beset with small blackish hairs. Middle and hind coxe blackish, their very tip only yellow. Feet yellow; the hind coxe with a bristle before the tip and tinged with brownish-black on the upper side of their tip. Hind tibie slender, their tip black. Fore and middle tarsi black from the tip of the first joint; hind tarsi altogether black. Cilia of the tegulx black. Wings tinged with gray; fourth longitudinal vein not broken. Male. Gamelle of the hypopygium hardly medium-sized, ovate, whitish, on their apical edge with a vestige only of a narrow black border and very little jagged, ciliated with hairs, most of which are pale. Hind tibize on their hind side without any bare stripe. First joint of the fore tarsi a little longer than the four following ones taken together; the latter are deep black and somewhat flat- 70 DIPTERA OF NORTH AMERI@A. [PART II. tened. The bristles on theupper side of the middle tibiz are very prolonged and become very slender towards their tip. The first joint of the middle tarsi is of considerable length, ciliated on its upper side with about nine or ten very long, bristle-like black hairs. Hab. Pennsylvania; Maryland; District Columbia. (Osten- Sacken. ) 38. D. scoparius, nov. sp. %.—Viridis, facie candida, antennis nigris, articulo primo infra rufo, ciliis oculorum inferioribus pallidis, ciliis tegularum nigris, pedibus flavis, tarsis ex parte nigris, articulis antico- rum ultimis duobus subdilatatis et utrinque nigro-pennatis, vena ala- rum longitudinali quarta non fracta. Green, face snow-white, antenne black, the first joint upon the nnder side red; cilia of the inferior orbit pale; cilia of the tegule black; feet yel- low, tarsi partly black; two last joints of the fore tarsi somewhat thick- ened, feathered with black on both sides; the fourth longitudinal vein of the wings not broken. Long. corp. 0.24. Long. al. 0.24. Bright metallic green. Antenne black, the lower edge of the first joint red; third joint short. Face snow-white; palpi brown- ish-yellow, the basis black. Cilia of the inferior orbit yellowish. Front metallic green. Fore coxe yellow, blackened at the base only to a moderate extent, upon the front side with a black pubes- cence. Middle and hind cox blackish, only the extreme tip and the trochanter yellow. Feet yellow. Hind femora before the tip with a bristle. Tibise plain, with rather numerous black bristles ; hind tibiee at the tip not blackened, upon the hind side without glabrous spot. Fore tarsi from the tip of the third joint black, not quite once and a half the length of the tibie; their two last joints are only very slightly enlarged, but closely feathered with bristle-like minute black hairs upon the front and hind side, so that they seem to be rather broad. Middle and hind tarsi plain, from the tip of the first joint black; upon the upper side of the first joint of the middle tarsi, not far from the tip, there is a stout black bristle. Cilia of the tegule black. Wings grayish-hyaline, of the usual form; fourth longitudinal vein not broken and the fore margin, near the tip of the first longitudinal vein, not thickened. The lamelle of the hypopygium of the only specimen which I possess are almost destroyed; I am able to state only that they are yellowish. | Hab. Maine. (Packard.) Mass, (Sanborn,) DOLICHOPUS. ce 39. D. discifer Srayyn. 4% and 9.—Viridis, facie alba, antennis ni- gris, ciliis oculorum inferioribus albis, tegularum ciliis nigris, pedibus flavis, femorum posticorum apice concolore, tarsorum anticorum articulo ultimo nigro, in mare modice dilatato, alarum vena longitudinali quarta non fracta. Green; face white, antennz black; cilia of the inferior orbit white, cilia of the tegule black; feet yellow, tip of the hind femora not blackened; the last joint of the fore tarsi black, in the % moderately enlarged ; fourth longitudinal vein of the wings not broken. Long. corp. 0.25— 0.26. Long. al. 0.24. Syn. Dolichopus patellatus MreicEn, Syst. Beschr. IV, 86, 22. Dolichopus discifer Srannivs, Isis 1831, 57, 10. Dolichopus confusus ZerrersteDt, Ins. Lapp., 709, 7. Dolichopus patellatus Starcer, Kroyer’s Tidskr. IV, 21, 12. Dolichopus discifer Zerrerstept, Dipt. Scand., II, 533, 28. WALKER, Dipt. Brit. I, 163, 20. Dolichopus tanypus Lorw, Neue Beitr. VIII, 24, 26. Bright green. Face white, in the % upon the upper half gene- rally more yellowish-white. Antenne black; first joint upon the under side red, third joint elongated-ovate, rather large; arista with a very short, but distinct pubescence; it is inserted beyond the middle of the third joint. Front shining green. Cilia of the inferior orbit white. Fore cox yellowish, beset upon their front side with delicate white hairs, and only on the inner side in the ? with some black hairs. Middle and hind coxe blackish, at the tip yellowish. Feet yellowish; hind femora with a bristle before the tip. Hind tibiz somewhat brownish-black only at their ex- treme tip, particularly on the inner side. Fore tarsi, although darker from the tip of the first joint, but only the last joint black ; middle tarsi from the tip of the first joint black; hind tarsi en- tirely black, seldom. only brown at the base of the first joint. Cilia of the tegule black. Wings grayish hyaline; fourth longi- tudinal vein not broken, towards its end somewhat more converging with the third than in most of the other species. Male, Lamelle of the hypopygium not very large, elongated ovate, white, on the upper and apical margin with a very narrow black border, on the latter somewhat jagged and fringed with black bristles. Hind femora not ciliated. Hind tibia slender, without glabrous spot upon their hind side. Fore tarsi exceed- ingly slender and elongated, the four first joints yellow, still some- what darker beyond the tip of the first joint, each following joint 12 DIPTERA OF NORTH AMERICA. [PART It. more slender than the previous one; the first joint is equal to three-fourths of the tibia, and is somewhat longer than the second and third taken together; second till fourth joints but very little decreasing in length; fifth joint deep black, somewhat flattened, so that it appears like a small ovate disk; at its extreme basis it is colored with yellowish-white. Wings towards the basis rather narrow, though of the usual form. Costa near the tip of the first longitudinal vein with an almost imperceptible swelling. Hab. English River; Red River. (Kennicott.) Sitka. (Sahl- berg.) White Mountains, N. H. (Osten-Sacken.) Observation.—A very close examination renders it certain that this species, as it appears widely spread in North America, is identical with the European D. discifer. I had overlooked this identity, while describing it from American specimens, as D. tanypus. 40. D. lobatus Loew. ‘4% .—Viridis, facie dilute lutescente, antennis nigris, inferioribus oculorum ciliis flavicantibus, tegularum ciliis nigris, pedibus flavis, femorum posticorum apice concolore, tarsis anticis inde ab articuli primi apice nigricantibus, articulo ultimo nigro, in mare latis- simo. Green; face pale luteous-yellow; antenne black; cilia of the: inferior orbit yellowish, cilia of the tegule black; feet yellow, the tip of the hind femora not darker; fore tarsi from the tip of the first joint black- ish; the last joint black, very much enlarged in the %. Long. corp. 0.27. Long. al. 0.26. Syy. Dolichopus lobatus Lorw, Neue Beitr. VIII, 24, 27. Bright green. Face pale yellow, rather whitish below. 142 DIPTERA OF NORTH AMERICA. [PART II. scarcely perceptible short pubescence. The lower part of the occiput only with the usual fringe of cilia. Scutellum without hair. Coxe and feet comparatively bare, the latter with very few bristles; the first joint of the hind tarsi without bristles. Wings not very broad, somewhat narrowed towards the basis; the last segment of the fourth longitudinal vein little inflected ; hypo- pygium small, rounded, rather imbedded, its outer appendages more filiform than lamelliform ; the inner appendages small. The next related genera are Rhaphium and Porphyrops. The characters of the genus Rhaphiwm have already been described. The species of Xiphandrium differ from the species of Porphyrops by their smaller size, more slender form, less hair, especially on the lower part of the occiput and on the coxe; the third joint of the antenne of the males is more elongated, more distinctly hairy, particularly on the whole lower side; the arista is beset with a comparatively short but easily perceptible pubescence ; the wings are less broad and towards their basis still narrower. It cannot be mistaken for the genera Systenus, Synarthrus and Smiliotus, as they differ from Xiphandrium and Rhaphium by the same distinctive marks. ; The name (from £05, sword, and dyyp, man) has been given to this genus on account of the sword-shaped antenne of the male. Out of Europe, no species of Xiphandrium are as yet known. I have a female from North America, which probably belongs to this genus. As it has lost its antenne, its systematical location could not be ascertained. Gen. XX. PORPHYROPS. The genus Porphyrops comprises species of at least middle size, rather stout shape and very hairy. The first joint of the antenne has no hairs on the upper side; the second is transverse } the third is moderately elongated in the male and shorter in the female; the hairs upon it are very short and the whole under side (with the exception of a few species) is entirely bare. Arista altogether apical with an almost imperceptible and very short pubescence. The under side of the occiput more or less densely fringed. Scutellum without hairs. Coxe and feet with rather much hair and bristles. First joint of the hind tarsi without bristles. Wings comparatively broad, towards the basis only a PORPHYROPS. 143 little narrower; the last segment of the fourth longitudinal vein moderately inflected. Hypopygium small, rounded, rather im- bedded, its outer appendages almost in all the species more fili- form than lamelliform ; the outer appendages small. With regard to the mutual relation of the three kindred genera, namely, Lhaphium, Xiphandrium and Porphyrops, all the re- quired information has already been furnished, so that a repetition of their distinctions is not necessary. I have vindicated the name of Porphyrops for this genus in the fifth volume of the Neue Beitrige. An entirely unfounded opposition had been raised against it. The following are the reasons by which I have been governed with relation to the name Porphyrops. Meigen, in the fourth volume of his works, has taken a wider view of thé genus Porphyrops and divided it into three sections: 1. With a subapical arista. 2. With an apical arista; and, 3. With an arista inserted dorsally on the third joint, near the basis. In his seventh volume he adopts the genus Argyra, which M. Macquart had in the meantime established for the first of the three divisions ; the third division he unites with ‘Medeterus; and for the only remaining second division, which principally contains species of the present genus, he retains the name of Porphyrops; at the same time he unites with them the species of his genus Rhaphium (that is the genera Rhaphium and Xiphandrium in the sense adopted above). As I cannot agree with this reunion, I am com- pelled to retain the name of Porphyrops for the genus, which embraces most of the species contained in Meigen’s second division and this is the present genus. The name Porphyrops (from xoppipa, scarlet, and dy, face) has reference to the beautiful scarlet color which is peculiar to the eyes of many species, especially the males. The hitherto known species of Porphyrops are distributed all ‘over Asia Minor, Europe, and North America. Table for the determination of the Species. ' Feet black. 1 melampus Lw. Feet yellow. 2 § All the cox black. 2 nigricoxa Lw. ( Fore cox yellow. 3 ; Fore cox not blackened at the basis. 3 fumipennis Lw. Fore coxe blackened at the basis. 4 rotundiceps /w. 144 DIPTERA OF NORTH AMERICA. [PART Il, Description of the Species. 1. P.melampus Lorw. % and 9.—Pedibus atris, alis nigricantibus. - Feet black, wings blackish. Long. corp. 0.17—0,18. Long. al. 0.14— 0.15. Syy. Porphyrops melampus Loew, Neue Beitr. VIII, 50, 1. Male. Metallic blackish-green. Face very narrow, with white dust. Palpi black with white dust. Antenne black; third joint rather long and pointed; arista more than half the length of the third joint. Front black-green, with white dust. Cilia of the upper orbit black, those of the inferior snow-white. Upper side, of the thorax shining, only on the anterior and lateral margin with more distinct white dust; on the former the beginning of two darker colored lines is perceptible. The scutellum has no hair besides the usual bristles. The bright and dark-green abdomen has scarcely a trace of white dust ; its last segment is almost black. The hypopygium is a little larger than in most of the other spe- cies of this genus, bright black; the outer appendages are ex- tremely small black lamelle fringed with black hair; the brown interior appendages are also small, turned a little upwards at the end, but pointed and upon the middle of the lower side fringed with a few hairs. The hair upon the abdomen is black, only on the lateral margin of the anterior segments and upon the venter whitish. Coxe black, with a rather thick white powder, the fore and middle coxe with considerable white pubescence and without any black bristles. Feet black; femora with a trace of blackish- green lustre; the tip of the trochanter, the tip of the knee, also the extreme tip of the fore and middle tibiz brownish-yellow ; the first joint of the fore tarsi a little longer than the three following together, at the end of the under side dilated almost in the shape of a tooth; otherwise the feet have no particular distinction. The cilia of the pale-yellowish tegule have whitish hair. Halteres pale-yellowish. Wings blackish, in the vicinity of the second half of the anterior margin rather black ; the last segment of the fourth longitudinal vein only very little inflected forward in the middle. Femaie. The only specimen which I have before me, strikingly differs from the described male in the color of the body ; as all the other characters coincide perfectly with those of the male, I have not the least doubt that both belong together and consider the PORPIYROPS. 145° difference in the color as only accidental, as it so often oceurs in the Dolichopodide. Face moderately broad, with silvery-white dust. Palpi black with white dust. Antenne short, the third joint small and ovate; arista three times the length of the anten- ne. Front blue with thin white dust. Upper side of the thorax steel-blue, upon the middle and towardg the hind margin more violet. The steel-blue scutellum upon its middle is also of a vio- let color. The abdomen is dark metallic-green, its last segment rather black-green at the basis, otherwise bright steel-blue. The hairs on the fore cox are like those of the male, only less dense and shorter; the hair on the middle cox is also whitish, the weak bristles in the vicinity of its tip are, however, black. The wings are the same as those of the males, only the blackening of the second part of the fore margin is stronger and the fourth longitu- dinal vein with the posterior transverse vein have a darker seam. The remainder like in the male. Hab. District Columbia. (Osten-Sacken.) 2. P. migricoxa Lorw. $.—Pedibus flavis, coxis omnibus et totis nigris. Feet yellow, all the coxe entirely black. Long. corp. 0.22. Long. al. 0.23. Syn. Porphyrops nigricoxa Lorw, Neue Beitr. VIII, 51, 2. Female. Metallic-green, front, thorax and scutellum very cop- pery. Face with yellowish-gray dust ; the separation between its upper and lower part is particularly striking. Palpi compara- tively small, black with yellowish-gray dust ; antenne black ; third joint ovate; arista 14 the length of the antenne. Front with thin yellowish-gray dust. Cilia on the upper orbit black, on the lateral and inferior orbits white. All the cox entirely black, with gray dust and whitish hair; at the end of the fore and middle cox there are no black bristles. Feet yellow, apical half of the hind femora black, the last third-of the hind tibize and the hind tarsi altogether are of the same color; middle and fore tarsi strongly infuscated from the root and towards the end black. Cilia of the yellowish tegule white. Halteres pale-yellowish. Wings gray, on the fore margin more brownish gray; the last segment®of the fourth longitudinal vein, beyoud the middle, gently inflected forward. Hab. Maryland. (Osten-Sacken.) 10 146 DIPTERA OF NORTH AMERICA. [PART II. 3. BP. fuwmipemmis Lorw. ¢.—Pedibus flavis, coxis anticis totis concoloribus. Feet with the fore coxe altogether yellow. Long. corp. 0.18. Long. al. 0.17—0.18. Syn. Porphyrops fumipennis Lozw, Neue Beitr. VIII, 51, 3. Female. Bright metallic-green. Face with pale yellowish- | gray dust. Palpi black, with yellowish-gray dust. Antenne black; the third joint small, rounded-ovate ; arista at least three times the length of the antenne. Front blue-green, with a pale yellowish-gray dust. Cilia of the upper orbit black, those of the lateral and inferior white. Thorax with a thin but rather distinct grayish-yellow dust. Fore cox yellowish with white hair; on their tips among the white hairs there are a few black bristles, not easily perceived. Middle and hind coxz blackish with yel- lowish tip ; the front side of the middle coxe is clothed with white hair and towards the tip with a few black bristles; hind femora blackish-brown at the tip; fore and middle tarsi infuscated, black- ened towards the end; the last third of the hind tibiz and the hind tarsi black. Cilia of the pale-yellowish tegule whitish ; halteres pale-yellowish. Wings tinged with brownish-gray ; the last segment of the fourth longitudinal vein gently inflected for- ward upon its middle. Hab. Middle States. (Osten-Sacken.) A. P. rotumdiceps Lorw. %.—Pedibus flavis, coxis anticis conco- loribus, basim versus nigris. Feet and fore coxe yellow, the latter in the vicinity of the root, black. Long. corp. 0.16. Long. al. 0.16. Syn. Porphyrops rotundiceps Lorw, Neue Beitr. VIII, 51, 4. Male. Bright metallic green. Face very narrow, with silvery- white dust, palpi black with pale dust. Antenne black; the third joint not very long for a male, rather rounded at the end; arista about as long as the antenne. Front metallic green. Cilia of the upper orbit black, of the lateral and of the inferior orbits white. Upper side of the thorax bright, with very indis- tinct white-grayish dust. Scutellum in part steel-blue. Abdo- men bright metallic green; in the vicinity of the Jaterat margin with rather distinct whitish dust; the narrow last segment rather steel-blue; the hair black, on the lateral margin and upon the SMILIOTUS. 147% venter whitish. The small hypopygium black; the exterior ap- pendages are of a dusky gray-yellowish color, comparatively long, fork-shaped and split into a shorter and a much longer internal lobe; the hornlike interior appendages are black and pointed. The yellowish fore cox are upon their whole basal half of a brownish-black color, and fringed on -the front side with long whitish hairs. There are no black bristles upon them. Middle coxe blackish with yellowish tip, the latter with a considerable black thorn, which seems to be composed of several contiguous bristles. Hind coxee of the same color as the middle coxe. Feet yellow; hind femora almost upon the whole apical half black ; hind tibiz although strong, but not incrassated, their last third black. Fore and middle tarsi somewhat infuscated, their end and the tip of their first joint more dark brown ; the first joint of the fore tarsi of the usual form, the hind tarsi black. Cilia of the pale- yellowish tegule whitish. Wings tinged with gray, a little darker upon the last part of their anterior margin; the last segment of the fourth longitudinal vein gently inflected forward upon its middle. Hab. District Columbia. (Osten-Sacken.) Gen. XXI. SMILIOTWS. Characters. Face in both sexes broad. Palpi large, concealing the proboscis. The antenne in both sexes of a similar structure ; the first joint on the upper side without hairs; the second of the usual transverse form; the third joint of different length in dif- ferent species, on the under side nearly excised from the root to the tip; the arista entirely apical, the first joint short and stout, the second, however, long, very slender, particularly towards the tip. Scutellum without hair. The abdomen of the male shows only fivé segments, while there are six in the related genera. The small rounded hypopygium is imbedded and has only very short appendages. All the tarsi are short, especially the hind tarsi, the first joint of which has no bristles ; the pulvilli of the fore tarsi of the male are enlarged. The wings are elongated, of rather equal breadth, and have a distinctly protruding anal angle ; the last segment of the fourth longitudinal vein is somewhat in- flected, ends beyond the tip of the wing and runs upon its middle over a large but flat impression. 148 DIPTERA OF NORTH AMERICA. [PART II. This genus has been established by Mr. Haliday, and, in con- sideration of the almost swordlike form of the antenne of the species which became first known, was called Macherium (from: uayzorea, the sword). As this same name has already been used for « genus of plants, I have thought fit to abandon it and to substi- tute the name of Smliotus (from curwros, the pruning-knife, because the third joint of the antenne in the two known species has the form of a pruning-knife). The two known species belong to the European fauna. Gen. XX. APHROSYLUS. The known species of Aphrosylus agree in the following, in part rather striking peculiarities which constitute the character of this genus. The first joint of the antenns without hair, the second of the usual transverse form, the third tapering at the tip; the arista entirely apical. The face narrowed above, espe- cially in the male. The proboscis turned towards the breast. Palpi disengaged, hanging downward, in the male larger than in the female. The abdomen of the male shows six segments; the short and rounded hypopygium ends it in the shape of a knob; its exterior appendages are elongated, parallel lamelle, fringed with rather long hair. The female abdomen has only five seg- ments. Wings of rather equal breadth; the posterior transverse vein is less distant from the margin of the wing, than its own leneth ; the end of the fourth longitudinal vein is parallel with the third. Feet with rather coarse bristles; the first joint of all the tarsi is much longer than the second; the first joints of the hind tarsi without bristles. The structure of the proboscis and the position of the palpi distinguish the species of Aphrosylus sufficiently from all the other genera of Dolichopodide. Hitherto only European species have been described. The name of the genus (from dgpds, the froth, and svc, I rob) has reference to the habit of these species to pursue their prey along the shores of a surging sea. Gen. XXIII. THINOPHILUS. Characters. The face in both sexes broad, not reaching as far as the lower eye-corner, and ending below at an obtuse angie. THINOPHILUS—PEODES. 149 Palpi in both sexes large, reposing upon the proboscis. Antenne very short; the first joint without hair, the second short, trans- verse, longer above than below; the third joint circular, the bare arista dorsal. Wings of equal breadth; the posterior transverse vein is distant from the margin of the wing more than its own length; the last segment of the fourth longitudinal vein is rather parallel with the third. The abdomen of the male has six seg- ments ; the hypopygium small, rather imbedded, and somewha turned inside; its exterior appendages are narrow, parallel lamell. The abdomen of the female shows five segments. Femora rather strong, the first joint of the hind tarsi without bristles. The species of Thinophilus are easily distinguished from the species of Diostracus by the absence of hair upon the first joint of the antenna; from the species of Peodes they differ hy the structure of the face and of the hypopygium. They live*principally along the shores of the sea, whence their name (from ss, down, sand hill, and ¢:aos, friend). As yet only European species have been made known. Gen. XXIV. PEODES. Characters. Face not reaching as far as the lower corner of the eye, rather narrow in both sexes, though a little broader in the female, and more enlarged below; the lower margin is straight. Palpi in the female considerably larger than those of the male and in both sexes reposing upon the proboscis. Antenne very short ; the first joint without hairs; the second short, transverse; the third joint rounded; arista dorsal, only with a short pubes- cence. Wings of uniform breadth; the posterior transverse vein is removed from the margin of the wing more than its own length; the last segment of the fourth longitudinal vein parallel with the third. The abdomen of the male has six segments; the short, stout hypopygium is not imbedded, but disengaged and a little inflected; its exterior appendages are two small parallel lamellee alongside of each other and with long hair; the interior appendages form a remarkably large curved forceps. The abdo- men of the female shows five segments. The femora are rather strong ; the first joint of the hind tarsi has no bristles. Peodes is closely related only to Thinophilus ; the differences become evident when the characters of both genera are compared. 150 DIPTERA OF NORTH AMERICA. [PART IL. The name of the genus (from wedédys, provided with a large penis) has reference to one of its most striking characters. Only one European species has as yet been made known, Gen. XXV. NEMATOPROCTUS. Characters. Antenne short; first joint without hair; second joint short, transverse; third joint small, in the male not larger than in the female, rounded ; the rather long arista entirely dor- sal. The face, much narrower in the male than in the female, does not reach as far as the inferior corner of the eye. Palpi re- posing upon the proboscis, those of the female much larger than those of the male. Front of equal breadth. The lower part of the occiput distinctly bearded. Eyes very hairy, especially towards the lower corner. Scutellum not hairy. The abdomen of the male has six segments; the small rounded, and a little im- bedded, hypopygium is at its tip; the exterior appendages are long and filiform, the interior appendages very short and usually not distinctly perceptible. The female abdomen shows five segments. Wings a little narrowed towards the basis, the first longitudinal vein not elongated ; the posterior transverse vein distant from the margin of the wing by more than its own length; the last segment of the fourth longitudinal vein very gently inflected and towards the end parallel with the third. Feet rather strong; pulvilli of the fore tarsi not enlarged; the first joint of the hind tarsi without bristles. The species of Nematoproctus mostly resemble in their habitus the species of Porphyrops ; they differ from them, however, by an altogether different structure of the antenne; the third joint of the male being also very short and the position of the arista com- pletely dorsal. They are less closely related to the species of Argyra, to which they were formerly reckoned, as the first joint of the antenne is without hairs, the third joint of the male is not en- larged, but as small as that of the female, the arista not subapical but entirely dorsal, the first longitudinal vein of the wings not elongated, further, the exterior appendages of the hypopygium have not the shape of short lamella, but of long threads. The species of Nematoproctus agree with the species of Leucostola in the glabrousness of the first joint of the antennz ; otherwise they LEUCOSTOLA. 151 differ from them precisely in the same manner as from the species Argyra. The name of the genus (from rua, the thread, and apuxris, po- dex) has reference to the thread-like form of the exterior ap- pendages of the hypopygium. ‘The species hitherto known are all European. Gen. XXVI. LEUCOSTOLA. The species of Leucostola, like those of Argyra, have usually upon the abdomen, and often also upon the thorax, a thick bril- liant silvery dust, which renders them easy to recognize. The first joint of the antenne is entirely hairless, the second is trans- verse, the third bare, rather large in the male; the apparently bare and distinctly two-jointed arista is very near the tip of the antenne. Wings broad, the posterior angle rather protruding ; the first longitudinal vein is farther from the margin of the wing than in most of the other genera, and is also much longer than usual; the fourth longitudinal vein is inflected forward before the middle of its last segment, thence, however, again parallel with the third ; the posterior transverse vein is not approximated to the margin of the wing. The first joint of the hind tarsi has no bristles. Hypopygium small, imbedded ; its exterior appendages are two small narrow lamelle, bent downward; the interior ap- pendages are of rather simple structure, and often not distinctly visible. The close relationship of the genus Leucostola to that of Argyra can be easily perceived by a comparison of their characters. There is scarcely any difference between them, but that the first joint of the antenne of Leucostola is entirely without any hair, while in Argyra it is distinctly covered with hair. The name of the genus (from aevxos, white, and sroar, dress) has reference to the beautiful silvery lustre which covers the abdomen and sometimes also the thorax of most of these species. The known species belong in part to Europe and in part to America. 152 DIPTERA OF NORTH AMERICA. [PART II, 1. L. cinguiata Lorw. %.—Viridis, lete splendens, abdomine non pollinoso, cingulis flavis. Green, brightly shining, abdomen without white dust and with yellow bands. Long. corp. 0.19. Long. al. 016. Syn. Leucostola cingulata Lozw, Neue Beitr. VIII, 53, 1. Male. Face very narrow, silvery-white. Palpi snow-white. Proboscis brownish-black. Antenne black; the third joint black-brown; the arista inserted close to its tip. Front black with silvery-white dust. Cilia of the upper orbit black, extremely short and delicate; cilia of the inferior and lateral orbits snow- white. Thorax metallic green, very bright, dusted only on the lateral margin. Scutellum of the same color, without hair, besides the usual bristles. Abdomen without any white dust; the first segment mostly black; the second yellowish, transparent, with metallic black border on the posterior margin and with an indis- tinct blackish spot near the middle of the anterior margin; third segment also yellowish, transparent, and at the basis with a rather broad violet-black transverse stripe, bisinuated on the hind side, and with a narrow blackish-green border on the posterior margin ; the coloring of the fourth segment of the abdomen is the same, but the bands on the fore-margin and the posterior border are broader, so that the yellow part of the segment has the appear- ance of being divided into two spots; the fifth segment has no yellow color, but is violet-black near its basis and black-green towards the tip. The same color prevails on the small hypopy- gium, the extremely small Jamelle of which are brownish. The rather long but not very coarse hair upon the abdomen is chiefly black, only upon the fore part of the first segment and upon the venter it is yellow-whitish. Coxe and feet pale-yellowish ; fore coxe with white hair and yellowish-white little bristles. Middle and hind cox near the basis a little blackened and also fringed with pale hairs and bristles. Femora slender, the hind ones slightly infuscated at the tip on the upper side. The hair upon the femora is blackish on the upper side and near the tip, whitish near the basis and on the under side; the very delicate whitish hair on the under side of the fore and middle femora is rather long. Fore tibize without any bristles ; middle and hind tibize only with very few delicate and short bristles. Fore and middle tarsi slen- der, but not very long; the first joint about as long as the others EUTARSUS. 153 taken together. The first joint of the hind tarsi is shorter than the second and a little stouter, especially towards the tip; it is fringed with the usual short hair, which is however unusually dense upon the latter part of the under side. Cilia of the black margined tegule yellowish-white. Wings short and broad; the posterior transverse vein strikingly far distant from the margin of the wing; the last segment of the fourth longitudinal vein be- fore its middle gently inflected forward. Hab. District Columbia. (Osten-Sacken.) Observation.—A rather badly preserved female, which I pos- sess, I suppose to be that of Leucostola cingulata ; it shows, how- ever, some differences, so that it may belong to some other closely related species. It differs from the above described male by the following characters : The face is comparatively broad and covered with a dense glittering silvery-white powder. The white palpi are larger than those of the male. The third joint of the antenne is very short; the position of the arista almost apical. The ab- domen is yellow with the exception of the last segment which is of a metallic-green color, shows however, when looked upon in an oblique direction, an indistinct greenish lustre; its penultimate and antepenultimate incisures are greenish-black towards the lateral! margin. The posterior margin of the pleure is not gray, but yellow. Among the whitish hair of the fore coxe there are a few light- brown bristles, which, in a certain direction, have a black appear- ance. The tip of the hind femora is not darker and the first joint of the hind tarsi is of the usual plain structure, however compara- tively of the same legeth as that of the described males. Other- wise it coincides with it perfectly. The only character which makes it doubtful whether they belong together is the yellow color on the hind margin of the pleure in the female. Hab. District Columbia. (Osten-Sacken.) Gen. XXVIII. EUTARSUS. Characters. Face narrow, especially in the male; a little broader upwards. Palpi very small. The first joint of the an- tenn without hair, the second much overreaching the third; the third rounded ; the arista dorsal, though rather closely approxi- mated to the tip of the third joint, distinctly two-jointed. The clongated, cylindrical abdomen of the male consists of six seg- 154 DIPTERA OF NORTH AMERICA. [PART IL. ments; the hypopygium is very small, entirely imbedded and without bristles ; its appendages are extremely small, almost com- pletely hidden. The female abdomen shows only five segments. Feet rather long, moderately bristly ; the first joint of the hind tarsi without bristles, much shorter than the second; the pulvilli on the fore tarsi of the male are enlarged, but not elongated, Wings of rather uniform breadth or narrower towards the root ; the first longitudinal vein not elongated; the last segment of the fourth longitudinal vein though somewhat inflected, still rather parallel with the third. Hufarsus appears to be nearer related to Diaphorus than to any other genus. The striking smallness of the palpi, the face narrowed below, the hypopygium covered with but delicate hairs, the very small and almost completely con- cealed appendages of the hypopygium and the not elongated pul- villi of the fore tarsi in the male distinguish Hutarsus from Diaphorus sufficiently. From Nematoproctus, whose exterior appendages of the hypopygium are long threads covered with hair, Hutarsus is distinguished by the small and concealed ap- pendages of the hypopygium. The species of Saucropus cannot be confounded with the species of Hutarsus on account of the en- tirely disengaged hypopygium, The genus has been founded upon the well known European Eutarsus aulicus Meig. The name (from «d, handsome, and rapoos, foot) has reference to the structure of the feet of the male. As yet no North American species is known to me, but I know a species from Venezuela, the hind tarsi of the male of which have a remarkable structure, and of which I durnish a description. 1. E. eques, n. sp. %.—Chalybeus, modice nitens, abdominis ex zneo nigri maculis lateralibus, ventre pedibusque flavis, femoribus pos- ticis supra tibiisque posticis totis fuscis, tarsis anterioribus preter basim, posticis totis nigris, articulo horum primo brevissimo, quarto in aculeum producto. Steel-blue, moderately shining; lateral spots of the bronze-black abdomen, venter and feet yellow; upper side of the hind femora and the whole hind tibie brown; the four anterior tarsi with the exception of the root, and the whole hind tarsi black; the first joint of the latter very short, the fourth joint produced into a point. Long. corp. 0.27. Long. al. 0.26. Male. Front shining steel-blue, not very broad, not excavated on the vertex, Antenne only of moderate length, black; the EUTARSUS. 155 narrow and a little clongated first joint is entirely bare on the upper side, on the lower edge of a rather distinctly reddish-yellow color; the third joint is short ovate; the arista is inserted upon the back of the third joint, nearer to its basis than it is the case with Hutarsus aulicus. The face is very narrow immediately below the antennx, and grows more and more so till it becomes cuneiform, so that the large eyes are entirely contiguous on a large extent. Palpi very small; proboscis rather small. Thorax steel- blue or violet, little shining, upon the shoulders more blue-green and more densely covered with dust; the extreme corner of the shoulder brownish. Scutellum of the same color as the upper side of the thorax and with two bristles. Metathorax and pleure black-green, the latter with whitish dust and a yellow hind mar- gin. Abdomen cylindrical, blackish bronze-colored; the second segment has near the basis a narrow yellow transverse stripe, which is somewhat dilated near the lateral margin; and upon the hind corners a large yellow spot; there are similar spots, but diminishing in size, upon the other segments. The small hypo- pygium is rounded and rather imbedded; its appendages are short, indistinct lamelle. The short hair upon the abdomen is black ; longer black bristles only on the hind margin of the first segment. Coxe and feet yellow; fore coxx with pale hair, at the tip only with a few thin black little bristles; middle coxe with a large black spot, which covers about three-quarters of their outer side; the hind coxe with a small blackish spot. The hind femora on the upper half of their hind side blackish-brown ; fore and mid- dle tibiz only at the extreme tip slightly infuscated; the hind tibiz totally black-brown. The fore tibixe are without bristles ; the middle and hind tibize are but sparsely beset with short bris- tles. Fore and middle tarsi from the tip of the first joint black- brown, plain; the first joint of the fore tarsi is somewhat shorter than the following taken together, the first joint of the middle tarsi longer than the others taken together. The hind tarsi are black, very much shorter than the hind tibize and of a very peculiar struc- ture; the first joint is remarkably shortened, the second 43 the size and the third 24 the size of the first ; the fourth joint has only the length of the first, its end, however, is produced into a stout thorn, so that with it this joint is not much shorter than the third ; the fifth joint is not at the end of the fourth, but attached on its under side at the place where the fourth joint begins to be pointed ; 156 DIPTERA OF NORTH AMERICA. [PART ihe on both tarsi it is rather singularly at right angles with the fourth joint, is somewhat longer than the third joint and has the form of a slender club. The grayish-hyaline wings are rather long and narrow; their anal angle is rather rounded off; the last segment of the fourth longitudinal vein runs upon its middle over a dis- tinct convexity of the wing and is there a little inflected ; towards its end it does not much approach the third longitudinal vein, which is here very gently curved backwards ; the sixth longitudi- nal vein becomes entirely indistinct at a considerable distance from the margin of the wing. Hab. Venezuela. (Moritz.) Observation.—Although the present species differs in some re- spects from Hutarsus aulicus, still it coincides in many important characters with it, so that it cannot be located into any other genus, unless, rather prematurely, a new genus is created for it. EHutarsus aulicus approaches the forms which prevail in the genus Diaphorus more than the above described species. Gen. XXVIII. DIAPHORUS. At the time of its adoption, and long after, the genus Diaphorus was considered as one which was very distinct from the genus Chrysotus. The characters which Meigen uses for their dis- tinction are the following: for Chrysotus, arista apical, the eyes of the male contiguous under the antenne, and the wings some- what divaricated when in repose; for Diaphorus, arista dorsal, eyes of the male contiguous on the front, and the ee reposing upon each other when at rest. The more species of these two genera have become known and the more carefully they have been examined, the more unsatisfac- tory Meigen’s characters have been found. North America is particularly rich in species belonging here, but showing important structural deviations. 3esides the species showing a different structure of the thorax, and which were formerly classed with Chrysotus, but are united now in the genus Chrysotimus, the other species of Chrysotus, agreeing in their habitus, are divided in such, the males of which have eyes contignous under the antenne, and in such, where the eyes are separated by the sometimes broad face; the position of DIAPHORUS. 157 the arista is likewise by no means always apical; on the contrary, it is even subapical in the majority of the species. The same happens to be the case with Diaphorus, where the eyes of the males are contiguous upon the front in some of the species only, while in others they are separated by the broad front ; the arista likewise is not always distinctly dorsal, but in many species subapical, and in some truly apical. Thus none of the distinctive marks, which Meigen had established for these two genera, holds good, except for Chrysotus, the wings divaricated in repose, and the parallel wings for Diaphorus. As this charac- ter can only be observed on living specimens, it is, even if proved to be correct, entirely insufficient for a systematical distinction of both genera. In order to escape this difficulty there are two different ways to be followed: either the species, with the eyes of the males not separated upon the front, must remain with Diaphorus, and those the eyes of which, in the male, are contiguous below the antenna, must go with Chrysotus, and a new genus must be established for the species of Diaphorus and Chrysotus, the males of which have the eyes distant above as well as below the antenne. The other way to follow would be to discover characters for the distinction of Chrysotus and Diaphorus better than those which Meigen had chosen. The first of these two alternatives is liable to serious objections. The establishment of three genera would disconnect the relation ‘naturally existing between the insects forming them, a relation based upon their general habitus, and their distinction would con- sist in a character pertaining merely to the male. Therefore nothing remains but to try the other way. If we compare first the species of Chrysotus, in which the eyes of the males are contiguous under the antenne, with those of Dia- phorus, where the eyes are not separated on the front, we will observe the following distinctions: The structure of the body of the species of Diaphorus is more slender, the abdomen especially is comparatively narrower, and more elongated; the hypopy- gium of the male has on’the hind side four bristles of rather striking size; the feet are longer, the pulvilli of the fore tarsi in the male are not only enlarged, but considerably elongated (with the exception of D. nigricans Meig.); the wings of Diapho- 158 DIPTERA OF NORTH AMERICA. [PART II. rus are comparatively larger, and have a different outline, because the anal angle is more protruding. If, separating the typical species of Diaphorus from the typical species of Chrysotus, we follow out these characters through a series of those species, which, notwithstanding the separation of their eyes upon the front, are placed into the genus Diaphorus, on account of their general habitus which approaches the typical species of Diaphorus, we find that those among the above men- tioned marks of distinction, which are peculiar only to the males, hold also good among these species; at least I do not know of any species which, being placed on account of its general habitus among the species of Diaphorus, had not on the pos- terior end of the hypopygium bristles of greater length and remarkable strength, or in which the pulvilli of the fore tarsi of the male were not elongated. It is different, however, with those marks of distinction which belong to both sexes, as also with the more slender form of the body, the greater length of the feet, and the more projecting anal angle of the wings of the species of Diaphorus ; each of these charac- ters gradually fades away from species to species so that, taken singly, these characters are utterly insufficient to decide whether a species belongs to Diaphorus or to Chrysotus. As it happens, however, that where one character decreases, another one becomes more salient, it follows that in their totality they are sufficient to distinguish the females of both genera, with the exception, perhaps, of a few isolated cases. In doubtful cases it will be well to compare the description of the species of both genera. The character of the genus Diaphorus may, therefore, be estab- lished, as follows: Form of the body rather elongated. Eyes of the male never contiguous on the face, in some species sepa- rated upon the front, in others not. Antenne short, the first joint bare, the second transverse, the third short, distinctly hairy, with a dorsal or subapical, rarely with an apical arista. Wings rather large, with strongly projecting anal angle, and thus usually somewhat broader towards the basis; the posterior transverse vein is either a little beyond, or in, or before the middle of the wing, never close to the margin of the wing; the last segment of the fourth longitudinal vein is almost straight, or but gently inflected, seldom interrupted, so that its end is thus more approxi- mated to the third longitudinal vein, without, however, converging DIAPHORUS. 159 towards it. Feet rather long, but not very slender; the first joint of the hind tarsi without bristles; the pulvilli of the fore tarsi elongated in the males of all species ; in the males of some species the same is the case with the pulvilli of the middle tarsi; in some with the pulvilli of all the tarsi. The hypopygium small, imbed- ded, on the posterior end with stouter bristles. The name of the genus (from Siapopos, different) signifies nothing more but that the species on which this genus was established were remarkably different from the species of previous genera, and is therefore not at all characteristic. The known species of Diaphorus are found in Europe, Asia, Africa and America. Table for the determination of the Species. | Color of the body non-metallic, black. 1 opacus Lw. Color of the body metallic-green. 9 ( Feet entirely yellow. 2 mundus Lw. ( Feet not entirely yellow. 3 | ; Tegule with black cilia. | ( Tegule with whitish cilia. 6 { Eyes of the male contiguous. 3 spectabilis Lw. Eyes of the male not contiguous. 5 All the tibie yellow. 4 sodalis Lw. 5 / Only the first half of the four anterior tibiw yellow. 5 lamellatus, nov. sp. ( Last segment of the fourth longitudinal vein not interrupted. | 6 leucostomus Lw. . | Last segment of the fourth longitudinal vein interrupted. L 7 interruptus Lw. Systematical arrangement of the Species. I. The eyes of the male contiguous upon the front. 1. opacus Lw. 3. spectabilis Lw. 2. mundus Lw. II. The eyes of the male not contiguous upon the front. A. The last segment of the fourth longitudinal vein not interrupted. 4. sodalis Lw. 6. lamellatus, nov. sp. 5. leucostomus Lw. B. The last segment of the fourth longitudinal vein interrupted. 7. interruptus Zw. 160 DIPTERA OF NORTH AMERICA. [PART Il. Description of the Species. I. THE EYES OF THE MALE CONTIGUOUS UPON THE FRONT. i. D. opacus Lorw. %.—Totus niger, tibiis piceis. Entirely black, tibie pitch-brown. Long. corp. 0.12. Long. al. 0.12— 0.13. Syn. Diaphorus opacus Lorw, Neue Beitr. VIII, 56, 1. Male. Entirely black. Face with the palpi and the proboscis black, entirely glabrous. Antenne black ; third joint small ; posi- tion of the arista more subapical than dorsal. The eyes are com- pletely contiguous on the upper part of the front; immediately above the antennz a brownish-black, opaque, triangular spot lies between them. Upper side of the thorax and of the scutellum covered with brown dust and opaque. The dust upon the black pleuree is more gray-brown and less distinct. The abdomen shining black, covered with black hair; the stronger bristles on the posterior part of the hypopygium very striking; its exterior appendages very small, black; coxe and femora black and with black hair; fore and middle femora on the under side with a row of sparse, erect, not very long black hairs; on the under side of the hind femora there are similar black little hairs, which are less erect and somewhat longer only towards the end. Fore and mid- dle tibiz more yellowish-brown; hind tibie dark-brown. Fore tarsi slender, the first joint as long as the following three together ; a great part of the first joint is yellowish-brown, its tip with the rest of the joints black-brown ; pulvilli not very much enlarged and only moderately elongated. Middle tarsi black-brown with yellowish-brown basis ; hind tarsi entirely black-brown. Halteres and tegule black ; the cilia of the latter also black. Wings smoky- blackish, towards the anterior margin darker; they become Visi- bly broader towards the basis ; posterior transverse vein but little before the middle of the wing; the first longitudinal vein reaches almost as far as the middle of the anterior margin and is some- what distant from the latter. Hab. New York. (Osten-Sacken.) Observation 1.—D. opacus is very closely allied to the Euro- pean D. nigricans. As I have only one specimen of the former, Iam unable to prove the coincidence of both species in all the DIAPHORUS. 161 plastic characters as fully as it is necessary when an Americang _ species is to be recognized as identical with a European species. Neither can I mention any reliable characters for the distinction of both species. I believe that the examination of a larger num- ber of specimens will establish their identity. Observation 2.—I believe I know the female of D. opacus, am however not certain, on account of the smaller length of the first longitudinal vein and the paler coloring of the hind tibie. The proboscis of this female is remarkably stout and protruding with a flattened tip; palpi rather large and broad. Face with an almost imperceptible grayish dust, with a distinct transverse swell- ing upon its middle ; front with gray-brown dust and with a trans- verse furrow below its middle; all the’ tibie yellowish-brown, wings tinged with a dusky blackish color, though not so much as in the above described male, and towards the fore margin not much darker; the first longitudinal vein reaches about as far as the middle between the extreme root of the wings and the end of the second longitudinal vein. All the rest as in the male. Hab. Pennsylvania. 2. D. mundus Lorw. 4% and 9.—Laete viridis, pedibus totis flavis. Light metallic green, all the feet yellow. Long. corp. 0.12—0.13. Long. al. 0.12—0,13. Syn. Diaphorus mundus Loew, Neue Beitr. VIII, 57, 2. Light metallic green. The face has a blue-green, but little shining, ground color, which is rather concealed by the distinct white dust; it is somewhat broader in the female and has a dis- ‘tinct transverse swelling. Palpi yellowish-brown, much larger in the female and blackened to a considerable extent towards the basis. Proboscis dusky yellow or yellowish-brown. Antenne brownish-yellow ; the small third joint more infuscated ; the arista almost apical; the eyes of the male meet completely on the upper part of the front, while they are separated directly above the antenne by a triangular spot of white dust. The front of the female is of entirely uniform breadth, only very little exceeding the breadth of the face, has a blue-green, scarcely a somewhat shining ground color, and is covered with yellowish dust. The cilia of the upper orbit are black and, on account of their brevity, 11 162 DIPTERA OF NORTH AMERICA. [PART IL. but difficult to perceive; the cilia of the lateral and inferior orbits are whitish. Upper side of the thorax and of the scutellum pale- green, with metallic lustre, covered with rather thick ochre-yello dust. Abdomen somewhat darker metallic green, often more gol@- green, or coppery-brownish. The bristles at the end of the hyp pygium are not very long; its exterior appendages brownish and very small. Coxe and feet yellow; the first two-thirds/of the ish. The tarsi are scarcely a little infuscated toy though their last joint is of a dark brown color ards their tips, In the male the some directions have a yellowish lustre. Wings grayish-hyaline, on the anterior half usually somewhat yellowish with yellowish- brown veins; they are rather large and towards the basis a little broader, but their greater breadth is not of the length of the whole wing. Hab. Pennsylvania. viridis, femoribus nigris, tibiis sularum nigris, oculis maris in 3. D. spectabilis Lorw. {4 .—Aeneo tarsorumque omnium basi flavis, ciliis te fronte contiguis. Bronze green, femora black, tibize and the root of all the tarsi yellow, cilia of the tegule black, the eyes of the male contiguous on the front. Long. corp. 0.13—0.17. Long. al. 0.15—0.16 Syn. Diaphorus spectabilis Loew, Neue Beitr. VIII, 57, 3. Dark metallic-green, thorax and abdomen more bronze-green, - the former sometimes more coppery. Face blue-green with thick white dust, which conceals considerably the ground color. Palpi and proboscis black. Antenne black, small; arista almost com- pletely apical. The eyes meeting upon the front to a large extent and separated only by a very small triangular spot, immediately DIAPHORUS. 163 above the antennex. Cilia on the upper orbit black, on the lower and lateral orbits white. Upper side of the thorax and scutellum ‘overed with yellow-brownish dust. The stouter bristles on the osterior end of the very small hypopygium rather striking ; its erior appendages brown and very small. Coxe black and with whitish dust; the hair on the fore coxe appears in most directions black) in others fallow-brownish. Femora black, somewhat with a green reflection ; the tip of the fore and middle femora brownish- yellow; their black hair, even on the under side, neither of con- siderable slender, wit ength nor density. Tibixe brownish-yellow, rather a few bristles. Fore tarsi very slender, from the tip of the first jot black-brown, though the basis of the second joint is again paler than the tip of the first; their first joint is as long as the other four together; the pulvilli are very much enlarged and elongated. Middle tarsi of an entirely similar structure, of the same color, but their pulvilli are somewhat less enlarged ; hind tarsi from the tip of the first joint black-brown, their pulvilli but very little enlarged; the yellowish tegulx with blackish cilia, which assume a yellowish glitter in a reflected light. Halteres yellowish, the tip of their knob usually somewhat infuscated. Wings tinged with gray, with blackish-brown veins, along which, in faded specimens, there are blackish-brown margins; they are broad, though their greatest breadth is not very close to the pos- terior angle; the space between the third and fourth longitudinal veins is rather wide; the last segment of the latter shows a very gentle flexure; posterior transverse vein rather long and somewhat beyond the middle of the wing; the first longitudinal vein reaches somewhat beyond the first third of the whole length of the wings and is not very far distant from the anterior margin. Hab. District Columbia. (Osten-Sacken.) IJ. THE EYES OF THE MALE NOT CONTIGUOUS UPON THE FRONT. A. The last segment of t 4. D. sodalis Loew. tibiis omnibus tarsorumq nigro fuscis, ciliis tegularum nigris, oculis maris in fronte separatis. fourth longitudinal vein not interrupted. and 9.—Aeneo-viridis, femoribus nigris, p anteriorum basi flavis, tarsis posticis totis ex Bronze-green ; femora black; all the tibie and the basis of the four ante- rior tarsi yellow; all the hind tarsi black-brown; cilia of the tegule 164 DIPTERA OF NORTH AMERICA. [PART It. black; eyes of the male separated upon the front. Long. corp. 0.14— 0.15. Long. al. 0.15. Syy. Diaphorus sodalis Lozw, Neue Beitr. VIII, 58, 4. Rather dark metallic-green, the abdomen and sometimes also the thorax more bronze-green, the scutellum in one specimen violet upon its middle. Face of the male of uniform breadth, green-blue with thick white dust; the face of the female visibly broader, more green, with less dust, below the middle with a transverse swelling. Palpi of the male whitish, only near the extreme basis somewhat blackish; the palpi of the female much larger, only at the tip dusky-whitish, otherwise blackish. Antenne small, black, with an apical arista. Front of the male of uniform breadth, somewhat exceeding the breadth of the face, blue with yellow- brownish dust, and green and shining upon the vertex. The front of the female is considerably broader, more green and less thickly dusted, the dust has in the vicinity of the antenne a whitish appearance. Cilia of the upper orbit black, those of the lateral and inferior orbits whitish. Thorax distinctly, but not very thickly, dusted. The coarser bristles on the posterior end of the small hypopygium are less striking ; the very small exterior appendages are brownish-black. Coxe black with whitish dust; the fore coxx indistinetly dingy white-yellowish at the tip; the sparse hair on the front side pale, but the bristles of the tip, black. The tro- chanter of the fore and middle feet dusky-yellowish, of the hind feet more brownish. Femora black with green lustre; their black hair is comparatively short; only on the under side of the femora of the male, very closely to the tip, a few somewhat longer bristle- like hairs. The tips of the four anterior femora and the tibiz are brownish-yellow, but the tip of the hind tibie is rather dark- brown. The fore tarsi of the male are slender and elongated, brownish-yellow at the root, then gradually becoming more infus- cated; their first joint is about as long as the two following taken together; the pulvilli are but moderately enlarged and elongated. The middle tarsi of the male are of the same color as the fore tarsi and of the same structure, but the first joint is almost as long as the following four taken together, and the pulvilli are not so much enlarged and less elongated. The fore and middle tarsi of the female correspond in color with those of the male, are, how- ever, considerably shorter, have no enlarged pulvilli, and the first . ie DIAPHORUS, 165 joint of the fore tarsi is about equal in length to all the other joints together. The short hind tarsi are in both sexes dark black-brown. Cilia of the white-yellowish tegule black. Halteres white-yellow- ish. Wings tinged with gray, with black-brown veins, which are margined with dusky in faded specimens; they are rather large and broad ; their greatest breadth is close before the middle; the posterior transverse vein lies in the middle between the extreme root and the extreme tip of the wing; the fourth longitudinal vein is somewhat distant from the third one; the first longitudinal vein is comparatively close to the margin of the wing and scarcely reaches one-third of the length of the wings. Hab. New York. 5. D. lamellatus, nov. sp. %.— Aeneo-viridis, pedibus nigris, tibiarum anteriorum dimidio basali flavo, ciliis tegularum nigris, oculis maris in fronte separatis. Bronze-green ; feet black; basal half of the four anterior tibie yellow ; cilia of the tegule black ; the eyes of the male separated upon the front. —Long. corp. 0.13. Long. al. 0.14. Dark metallic-green, the color of the scutellum sometimes more blue and that of the abdomen more coppery. Face with thick whitish dust. Palpi small, whitish and fringed with a few black hairs. Antenne small, black; the arista subapical. Eyes separated ; front much narrower than the face, broader below than above, and covered with thick white dust. Cilia of the upper orbit black, of the lateral and inferior orbits whitish. Thorax, though with dis- tinct, but very thin brownish-yellow dust. On the posterior end of the hypopygium there are six bristles of remarkable strength. The brownish-black exterior appendages are of much larger size than in the kindred species; they are elongated spatule-shaped, very narrow at the root, rounded at the tip and fringed with blackish hairs. Coxe and feet black; the trochanter of the fore cox, the extreme tip of the four anterior femora and basal half of the four anterior tibie yellow. The hair upon the feet is black, on the under side of the hind femora elongated and more dense towards their tip. The pulvilli of the fore tarsi are rather un- commonly elongated, while those of the middle tarsi exhibit only a small elongation and those of the hind tarsi none at all. Cilia of the white-yellowish tegule black. Halteres white-yellowish. Wings gray with brownish-black veins, rather large and broad ; 166 DIPTERA OF NORTH AMERICA. [ PART II. they have their greatest breadth somewhat before their middle; the posterior transverse vein is in the middle between the extreme root and the tip of the wings; the first longitudinal vein runs at least as far as the third of the length of the wing. Hab. Middle States. (Osten-Sacken.) 6. D. ieucostomus Lorw. % and 9.—Laete viridis, thorace et scutello interdum cerulescentibus, tegularum ciliis albidis, vena longi- tudinali quarté non interrupta. Light green, thorax and scutellum sometimes more blue; cilia of the tegule whitish, the fourth longitudinal vein not interrupted. Long. corp. 0.09—0.10. Long. al. 0.12. Syx. Diaphorus leucostomus Lozw, Neue Beitr. VIII, 58, 5. Male. Wight green, metallic, shining, thorax and scutellum sometimes sky-blue. Face for a male very broad, deepened length- wise, without transverse swelling, so thickly covered with snow- white dust, that the ground-color becomes invisible. Palpi protruding, much larger than in the males of other species ; proboscis very small, black. Antenne black, larger than in other species; the third joint is particularly distinguished by its more considerable size and is extended at the end into a short point; arista inserted on the upper side before the tip of this point, but so much bent downward as to be easily mistaken for being apical. Front of uniform breadth, scarcely exceeding that of the face, blue with white dust, which is thicker near the antenne and is almost totally wanting upon the vertex. Cilia of the upper orbit black, those of the lower and lateral orbits whitish. Thorax with thin gray-whitish dust. The bristles on the posterior margin of the small hypopygium rather long and strong; its outer appen- dages are not distinctly visible. Coxe black, the foremost dusky- whitish at the tip, on the front side rather bright blue-green and fringed with whitish hair, but without black hairs or bristles. Femora metallic blue-green with yellowish tip, with very short hair. Tibise and tarsi yellowish, the latter towards the end gradu- ally somewhat darker, but only their last joint brown ; fore tibie without strong bristles, middle and hind tibie with a stronger bristle on the exterior edge of their upper side and not far from the root; the hind tibie, on the exterior edge of the upper side, are sparsely beset with shorter and weaker bristles. Fore tarsi DIAPHORUS. 167 long and slender ; their first joint about as long as the other three together, the pulvilli considerably enlarged and elongated. Middle tarsi like the fore tarsi and of a similar color, but their first joint about as long as the other four together, and the pulvilli not quite so large and not quite so elongated as on the fore tarsi. Hind tarsi more infuseated, only the root of the first joint brown- ish-yellow. Tegule whitish with whitish cilia. Halteres also whitish. Wings hyaline, but very little tinged with gray; veins brown-black ; the posterior transverse vein rather exactly in the middle between the root and the tip of the wing; the first longi- tudinal vein reaches but very little beyond the third part of the length of the wings. Female. Face very little broader than in the male, with thick white powder, although appearing gray on account of the appa- rent dark ground-color; it is somewhat deepened upon its larger upper part and gently convex upon its smaller lower part; both parts are divided by an imperfect transverse swelling. Palpi whitish, near the basis somewhat gray. Antenne considerably smaller than in the male, the third joint much smaller, rounded, with an almost imperceptible angle below the insertion of the arista. Front more broad and more green than in the male. Tarsi shorter and usually somewhat more infuscated than those of the male. The pulvilli not enlarged. Hab. Maryland. (Osten-Sacken.) Observation 1—I believe that I am not mistaken with regard to their belonging together, but I rather preferred to describe them separately. If, contrary to expectation, they should prove as not belonging together, then the name must remain to the male, which I consider as typical. Observation 2.—D. leucostomus approaches in its entire habitus several species which I believe must be referred to Chrysotus more than any other species of the genus Diaphorus, known tome. The elongation into a point of the third joint of the antenne in the male seems to indicate a relationship to Synarthrus barbatus ; neverthe- less the latter differs materially by its narrow, not deepened face, by the conspicuously elongated third joint of the antenne and also by the entirely apical insertion of the arista. 168 DIPTERA OF NORTH AMERICA. [PART IL. B. The last segment of the fourth longitudinal vein interrupted. *. BD. interruptus Lozw. %.—Obscure virescens, modice nitens, femoribus et, tibiis concoloribus, genibus testaceis, tarsis fuscis, vend alarum longitudinali quarta interrupta. Dark green, moderately shining; femora and tibize also green; knees brownish-yellow ; tarsi brown; the fourth longitudinal vein interrupted. —Long. corp. 0.23. Long. al. 0.20. Syn. Diaphorus interruptus Loew, Wien. Ent. Monatschr. V, 37, 9.—Lorw, Neue Beitr. VIII, 59, 6. Male. Rather dark green, not very shining. Face of uniform breadth with the.front, very broad for a male, covered with thick whitish dust, so that the ground color becomes invisible, moder- ately deepened and without a transverse swelling. Palpi and proboscis black. Antenne black; their first joint somewhat longer than in other species; the third joint rounded; position of the arista distinetly dorsal. Front with thick dusky-whitish powder, so as to conceal the ground color. Cilia of the upper orbit black ; the cilia of the lateral and inferior orbits are whitish and form a considerable fringe. Upper side of the thorax and of the scutel- lum dark-green and dull from grayish dust. Abdomen more shining-green, with extensive but less thick whitish dust and on the anterior part of the segments coppery to a large extent. The four stout bristles on the posterior end of the small and imbedded hypopygium are very prominent. Coxe black; the fore and middle coxze on the front side more black-green and fringed with black bristles. Femora metallic green, stout, beset with dense and coarse black hair, on the under side with numerous, but not strong black bristles. Knees yellowish-brown. ‘'Tibiz on the under and front side black-brown, on the upper and hind side dark metallic-green, of strong structure and with unusually strong bristles. Tarsi black-brown, the root of the anterior ones and the under side of all the others more brownish-red; all tarsi are stouter and less elongated than in the other species known to me, also with more hair; the pulvilli are all very much enlarged and elongated. Tegule yellowish with pale-yellowish cilia. Wings hyaline, scarcely a little tinged with gray, alternately with yellow and brown veins; first longitudinal vein somewhat distant from the margin of the wing and reaching about as far as the middle of the wing; the third longitudinal vein is very close to the second LYRONEURWS. 169 and ends long before the tip of the wing, although its end is very much curved backwards; the posterior transverse vein is very short and lies much before the middle of the wing, so that the last segment of the fourth longitudinal vein becomes uncommonly long ; the latter diverges very much from the third longitudinal vein, is entirely interrupted upon its second third and the last third, which is remarkable by its slenderness, is pushed forward towards the third longitudinal vein. Hab. Cuba. (Poey.) Observation.—The interruption of the last seement of the fourth longitudinal vein is particularly striking in this species; a trace of it is also found in some of the European species. The position and the course of the third longitudinal vein recall the neuration of Lyroneurus. ; Gen. XXIX. LYWRONEURUS. The following are the characters of the genus Lyroneurus: The body is elongated. Eyes upon front and face widely sepa- rated in both sexes. Antenne short; the first joint not hairy, the second transverse, the third short, rounded, distinctly pubescent ; arista apical. Wings very large, at the tip broad and very ob- tuse ; the posterior transverse vein does not approach the margin of the wing; the third longitudinal vein very close to the se-ond and very much turned backward at the end; the space between the third and fourth longitudinal veins remarkably broad; last segment of the fourth longitudinal vein distinctly inflected. Feet rather long, but not very slender; first joint of the hind tarsi without bristles. Pulvilli of the fore tarsi in the male not elon- gated. Hypopygium small, imbedded, at the posterior end with four strong bristles ; its appendages are very small and hidden. The genus Lyroneurus is by far the next related to the genus Diaphorus. A more minute examination of the American spe- cies of Diaphorus has satisfied me that this relationship is greater than I supposed, when establishing the genus Lyro- neurus (Wien. Ent. Monatsch. I, 37). The larger size of the wings, which are very broad at the tip, the greater breadth of the space between the third and fourth longitudinal veins, the distinct flexure of the last segment of the fourth longitudinal vein and the not elongated pulvilli of the fore tarsi in the male, these are the 170 DIPTERA OF NORTH AMERICA. [PART II. characters which distinguish Lyroneurus from Diaphorus. The last of these characters is decisive for the maintenance of the genus Lyroneurus, as the elongation of the pulvilli of the fore tarsi in the male cannot be dispensed with in the character of the genus Diaphorus, without rendering the limit between Diaphorus and Chrysotus entirely uncertain. The genus Lyroneurus, to which also belongs D. adustus Wied., seems to contain only American species; they appear to be particularly numerous in South America. The name of the genus (from arpa, the lyre, and veipor, the nerve) has reference to the lyre-shaped space between the third and fourth longitudinal veins. i. L. caevulescems Lorw. 4 .—Viridis, thorace et abdominis dorso ceruleis, femorum apice tibiisque totis testaceis, tarsis ex nigro fuscis. Green, thorax and dorsum of the abdomen sky-blue; tip of the femora and the whole tibie brownish-yellow; tarsi black-brown. Long. corp. 0.22. Long. al. 0.25. Syy. Lyroneurus cxrulescens Loew, Wien. Ent. Mon. I, 39.—Lorw, Neue Beitr. VIII, 60, 1. Light metallic-green, most of the upper side of the thorax, of the scutellum and the greater part of the upper side of the abdo- men sky-blue or violet. Face of considerable and uniform breadth and so thickly covered with gray-whitish dust that no trace of the blue-green ground-color is left. Palpi black, with white-gray dust and with strong black hairs. Antenne black, short. Front of uniform breadth, equal to that of the face; the dust upon it is so thick that hardly a trace of the ground color is left. Cilia of the upper orbit black, cilia on the lateral and inferior orbits white and forming a rather thick beard. Thorax pale green, upon the middle line and upon the whole hind part sky-blue, or shifting to violet. The rather thick dust on the upper side of the thorax has a gray-brownish tinge. Scutellum blue or violet with gray-brown dust, on each side with a stronger and with a weaker bristle, on the surface bare. Pleuree green with rather thick gray-white dust. Abdomen cylindrical, metallic-green; its upper side shining blue or violet from the middle of the second segment to the tip. The hair upon the abdomen is black; the bristles on the hind margin of the single segments are but of moderate length. im. ‘ CHRYSOTUS. LH The lateral margin of the abdomen shows a distinct gray-whitish dust. The small hypopygium is completely imbedded ; it has (as I now perceive on a well-preserved specimen) four strong bristles on the hind margin, like the hypopygium of the males of Diapho- rus; the appendages of the hypopygium are extremely small, and completely hidden. Coxe black, somewhat shifting to green, ren- dered gray by a covering of dust; the fore coxe at the tip are of a dusky-yellowish color, and beset with black bristles, while on their front side there is some pale hair. Femora green, not strong and fringed with comparatively short black hair. On the four anterior femora the tip to a considerable extent, and on the hind femora only the extreme tip are of a brownish-yelow color. Tibiz brownish-yellow, the tip of the hind tibiw strongly infus- cated, all the tibiz with but few bristles. Tarsi black-brown, the first joint of the middle tarsi up to its first third, that of the fore tarsi up to the middle, yellow-brownish. Fore tarsi but little longer than the fore tibie, and their first joint not quite so long as the rest; their pulvilli not enlarged. Tegule white-yellowish with brownish-black cilia. Wings grayish hyaline with a greasy lustre ; veins brown; the first longitudinal vein lies ¢lose to the margin of the wing and reaches only a little over the first quarter of the length of the wings; the costa is rather stout, particularly near the end of the second longitudinal vein ; the posterior trans- verse vein is straight and is pretty much in the middle between the root and the tip of the wing. Hab. Mexico. Gen. XXX. CHRYSOTUS. The genus Chrysotus contains on the average only small spe- cies. The eyes of the males in many species meet upon the front ; in males of other spécies they are separated. The front becomes broader towards the vertex in most of these species, and more so than is the case with the species of Diaphorus. Antenne very short; the first joint without any hair; the second transverse ; the third rounded, often rather kidney-shaped, sometimes pointed and distinctly hairy; only in one species, which, on account of the agreement of all the other characters, I have located with Chry- sotus, the third joint of the antenne is considerably longer, almost of the same shape as in most of the species of Argyra. The two- 172 DIPTERA OF NORTH AMERICA. [PART 1. jointed arista has an apical or a subapical position. Hypopygium imbedded, distinctly hairy; its outer appendages have a lamelli- form structure and are usually concealed. Feet rather short and comparatively strong. The first joint of the hind tarsi without bristles. Wings in comparison rather broad and very rounded at the tip ; the small transverse vein in most of the species very far distant from the margin of the wing; the last segment of the fourth longitudinal vein straight, parallel or almost parallel to the third longitudinal vein. I have already expressed myself in detail (see Diaphorus) about the difficulty attending the distinction of the genera Dia- phorus and Chrysotus. I have pointed out that I consider the smaller size, the less slender form, the comparatively smaller size of the wings, the smaller length of the feet, the not elongated pul- villi of the fore tarsi in the male and the absence of stronger bris- tles on the posterior end of the hypopygium, as those characters, which enable us to distinguish the species of Chrysotus from Diaphorus. The range of the genus Chrysotus is known to be Europe, Asia, Africa, and America. The name of the genus (from ypvowrds, gilded) has reference to the gold-green color of many species. Mr. Say has described three North American species of Chry- sotus ; hardly one of the three probably belongs to this genus, as Mr. Say seems to have misunderstood its characters; Chrysotus nubilus may be a Medeterus, C. concinnarius is perhaps a Dia- phorus, and C. abdominalis is probably a Chrysotimus. In the next place Mr. Macquart has described a female as Chrysotus viridifemora ; if face and front are covered with white dust, as it seems to follow from his description, this character and the color of the feet may perhaps help to recognize the species. Finally, Mr. Walker has, in his usual careless manner, published a Chry- sotus incertus, which probably will remain incertus forever; as he lias not even stated the sex of the specimen described, his descrip- tion is of no use whatever. I know, thus far, twelve North American species of Chrysotus, of which five are represented in both sexes, three only in the male, and four in the female sex; two of the latter offer but so little peculiar characteristics, that I hesitate with their publication, while the two others are striking enough to preclude the possi- bility of a mistake. CHRYSOTUS. 17%3 u Table for the determination of the Species. ee joint of the antenne elongated. 1 cornutus, nov. sp. Third joint of the antennz not elongated at all. . 2 { Femora of dark color. 3 UFemora of pale color. 11 3 f Ground-color of the palpi pale. 4 Ground-color of the palpi blackish. 5 { Palpi white. 2 longimanus Lw. t Palpi yellow, near the basis blackish. 3 validus Lw. { Cilia of the tegule black. 6 Cilia of the tegule pale. 8 ake of the male separated. 6 vividus, nov. sp. Eyes of the male contiguous. 7 ( Four anterior tibie of the male and all the tibie of the female yellow. 7 | 4 obliquus Lv. 1 Both the fore tibia of the male and the four anterior tibiew of the female yellow. 5 affinis Lw. Wings of the male with thickened costa. 9 { Wings of the male without a thickened costa. 10 Costa of the male very much incrassated. 7 costalis Lw. t Costa of the male moderately incrassated. 8 subcostatus, nov. sp. (Smaller species, with about three bristles on the upper side of the | hind tibiz. 9 discolor Lw. 1 Larger species, with about five bristles on the upper side of the hind rf tibie. 10 auratus /w. 1 { Antenne entirely black. 11 pallipes Lw. First joint of the antenne red. 12 picticornis, nov. sp. Systematical arrangement of the Species. I. Third joint of the antennz elongated. 1. cornutus, nov. sp. II. Third joint of the antennz not elongated at all. A. Femora of a dark color. A. Ground-color of the palpi pale. 2. longimanus L/w. 3. validus Lw. s. Ground-color of the palpi blackish. 1. Cilia of the tegule black. 4. obliquus L/w. 6. vividus, nov. sp. 5. affinis Lw. 2. Cilia of the tegulz pale. 174 DIPTERA OF NORTH AMERICA. [PART lite a. Costa of the male incrassated. 7. costalis Lw. 8. subcostatus, nov. sp. b. Costa of the male not incrassated. 9. discolor Lw. 10. auratus Lw. B. Femora of a pale color. 1l. pallipes Lw. 12. picticornis, nov. sp. pailip Description of the Species. J. THIRD JOINT OF THE ANTENNA ELONGATED. 1. C. cornutus, nov. sp. %.—Obscure viridis, paulo nitens, tertio antennarum articulo elongato, ocnlis infra antennas contiguis, tegularum viliis femoribusque nigris, tibiis testaceis, tarsis anterioribus inde ab articuli primi apice posticisque totis fuscis. Dark green, little shining; the last joint of the antenne elongated, eyes meeting below the antenne; cilia of the tegule and femora black; tibiz brownish-yellow; the four anterior tarsi from the tip of the first joint and all the hind tarsi brown. Long. corp. 0.09. Long. al. 0.09. Dark green, moderately shining. Antenne black, the third joint uncommonly elongated for a Chrysotus, almost of the same shape as in the species of Argyra, only somewhat longer, with a blunt tip; arista apical. Front black-green. Coxe and femora black, the latter with brownish-yellow tip. Tibiee brownish-yel- low, the hindmost black-brown at the tip and fringed on their upper side with a moderate number of bristles. The four anterior tarsi are black-brown from the tip of the first joint ; the hind tarsi are of a black-brown color. Cilia of the tegule black. Wings of the usual structure peculiar to the genus Chrysotus, hyaline with a gray tinge; the small transverse vein is before the middle of the wing and is short. Hab. Mlinois. (Le Baron.) Observation.—This species is distinguished from all other spe- cies of the genus Chrysotus in a striking manner by the unusual elongation of the third joint of the antenne, agrees, however, com- pletely in all other respects. I have hesitated to establish a new genus upon it, as but a single character constitutes its difference from Chrysotus, which character belongs probably only to the male. CHRYSOTUS. 175 II. THE THIRD JOINT OF THE ANTENNZ NOT ELONGATED AT ALL. A. Femora of a dark color. A. Ground color of the palpi pale. 2. C. lomgimanus Loew. %.—Viridis, nitens, palpis albis, tarsis anterioribus tenuibus et longis. Green, shining, palpi white, the four anterior tarsi long and slender. Long. corp. 0.14. Long. al. 0.14. Syn. Chrysotus longimanus Lozw, Neue Beitr. VIII, 62, 1. Shining green. Face of uniform, and for a male, rather consi- derable breadth ; the covering of white dust does not entirely con- ceal the green-blue ground color. Palpi white, not very broad, but for a male rather long. The third joint of the antenne not large, rather kidney-shaped ; the position of the arista rather pre- cisely apical. Front metallic-green, very little dusty and towards the vertex very little enlarged. Upper side of the thorax covered only with a thin brownish-yellow dust. Coxe and femora black with a blue-green metallic lustre, which is more distinct on the femora; the tip of the fore cox yellow, the tip of the posterior coxe dusky-brown. On the anterior feet the tip of the femora, the tibiz and the greatest part of the first joint of the tarsi are yellow ; the remainder of the unusually slender and long fore tarsi is dark brown; the hind tibize are yellow, but distinctly infuscated at the tip; the hind tarsi are dark brown. The hair upon the feet is short and the bristles very scarce. Cilia of the tegule pale. Wings distinctly tinged with gray and with rather black veins. The posterior transverse vein is more distant from the root of the wing than in most of the other species. Hab. Middle States. 3. C. validus Lorw. $%.—Auredo-viridis, nitens, palpis flavis, basim versus nigricantibus, pedibus flavis, femoribus posticis excepto apice nigris, viridi-micantibus, femoribus anticis nigro lituratis. Golden-green, shining, palpi yellow, towards the basis blackish; feet yel- low, hind femora with the exception of the tip black, with greenish lus- tre, the anterior femora striped with black, Long. corp. 0.13. Long. al. 0.13. Syn. Chrysotus validus Lozw, Neue Beitr. VIII, 63, 2. Golden-green, shining. Face for a female of moderate breadth ; 176 DIPTERA OF NORTH AMERICA. [PART II. its covering with whitish dust does not entirely conceal the blue- ereen ground-color ; the usual transverse swelling lies, as in most of the other species, usually rather far below its middle ; palpi for a female of moderate size, yellowish and blackish at the root. The third joint of the antennze comparatively not large, rather rounded. Front metallic-green, with thin dust and towards the vertex a lit- tle enlarged. Upper side of the thorax only with thin, brownish- yellow dust. Coxe and hind femora black with metallic-green lustre, which is most distinctly seen on the latter. The tip of the fore cox yellow; fore feet yellow ; femora on the upper side with a black longitudinal stripe, the tarsi infuscated from the tip of the first joint; middle feet entirely yellow; the tarsi infuscated only from the tip of the first joint ; on the hind feet the extreme tip of the femora, the tibize and the greater part of the first joint of the tarsi are of a pale color. The hair upon the feet is short and rather delicate, the bristles only few, though the little bristles on the hind tibiee are rather long. The pale hairs on the cilia of the tegule seem to have, in some directions, a dark appearance. Wings only slightly tinged with gray, with dark brown veins. The posterior transverse vein approaches but little the root of the wing, and is somewhat farther from it than in most of the other species. Hab. Middle States. (Osten-Sacken.) B. Ground color of the palpi blackish. 1. Cilia of the tegule black. 4. C. obliquus Lorw. 4% and 9.—Viridis, nitens, tegularum ciliis nigris, femoribus nigris viridi-micantibus, summo anteriorum apice flavo. *,. Oculis contiguis, tertio antennarum articulo obliquo, tibiis anteriori- bus flavis. Q. Tibiis omnibus flavis. Shining-green ; cilia of the tegule black ; femora black, with green lustre ; the extreme tip of the four anterior femora yellow. *,. The eyes contiguous ; the third joint of the antenne oblique; the four anterior tibie yellow. Q. All the tibie yellow. Long. corp. 0.09—0.10. Long. al. 0.09—0.10. Syn. Chrysotus obliquus Lozw, Neue Beitr. VIII, 63, 3. Male. Eyes completely contiguous upon the face; the small triangular spot between them, immediately below the antenne, is “ CHRYSOTUS. Lig covered with brown-gray dust; the very small palpi black. The third joint of the aytenne comparatively with long hair, rather large, oblique, its upper margin much more arched than the lower margin, which is almost straight; the arista is subapical. Front metallic-green, without a distinct trace of dust, and becoming broader upwards. Thorax shining green, sometimes rather gold- green. Coxe and femora black with metallic-green lustre; on the four anterior feet the extreme tip of the femora, the tibia and the greater part of the first joint of the tarsi are yellow, the fol- lowing part of the tarsi black-brown; the hind tibie and hind tarsi are decidedly of a brown-black color. The hair upon the feet, though somewhat rough, is short, and even on the hind tibiz of very moderate length; the hind femora have on the under side before the tip but a few bristle-like hairs ; the bristles on the tibiz are very scarce; the pulvilli are very small even on the fore tarsi. Cilia of the tegule black, though some of them exhibit in a re- flected light a yellow-brownish glitter. Wings somewhat tinged with gray; veins black; the posterior transverse vein very close to the root of the wing; the last segment of the fourth longitu- dinal vein parallel to the third and ending a little before the tip of the wing. . Female. Face of moderate breadth with grayish-white dust upon rather black ground; the usual transverse swelling is far below its middle. Palpi blackish, the third joint of the antennx smaller than that of males, and its oblique form less striking. The brownish-yellow dust on the upper side of the thorax some- what more dense than in males. The color of the four anterior feet like that of the males; the hind tibize yellow with a somewhat dusky tip ; hind tarsi dark brown, the first joint is sometimes more yellowish-brown near the basis. Wings like those of the male, only the anal angle somewhat more protruding. Hab. New York. (Osten-Sacken. ) Observation.—I have no ground for doubting that these two sexes belong together, as all those characters which distinguish the male from the female are within the range of the sexual dis- tinctions peculiar to this genus, and the agreement of all the other characters is very striking. 12 178 DIPTERA OF NORTH AMERICA. [PART IBE 5. C. affimis Lorw. % and 9.—Viridis, nitens, tegularum ciliis nigris, femoribus nigris viridi-micantibus, summo anteriorum apice ex flavo iceo. a Oculis contiguis, tertio antennarum articulo subobliquo, tibiis anticis ex flavo piceis. Q. Tibiis anterioribus ex flavo piceis. Shining green, cilia of the tegule black; femora black with green lustre ; the extreme tip of the four anterior femora yellow-brownish. ‘ t,. Eyes contiguous ; the third joint of the antenne but little oblique; the fore tibize yellow-brownish. . The four anterior tibie yellow-brownish. Long. corp. 0.09—0.10. Long. al. 0.10. Syn. Chrysotus affinis Lozw, Neue Beitr. VIII, 64, 4. Male. It is so much like the male of C. obliquus, that a state- ment of the differences will be sufficient for its recognition. The third joint of the antenne is visibly smaller and less oblique; the hind femora have upon the second part of their under side a greater number of bristle-like black hairs; finally the hair upon the hind tibiz is much longer; the feet are considerably darker; fore tibie more yellowish-brown than yellow and towards their tips distinctly dusky ; middle tibize often almost brown-black, but always with a yellowish-brown basis; middle tarsi entirely black- brown ; fore tarsi only near the basis of a pale brown color. I have not discovered any other differences. Female. I have only a single female, which I think belongs here. It resembles the female of the preceding species very much, only the fore tibiz are more ofa brownish-yellow color and dusky towards the tip; the middle tibiee are still darker than the fore tibiee and the hind tibiz are like those of the male, black. The third joint of the antennz is somewhat smaller than in the females of C. obliquus. Hab. Middle States. (Osten-Sacken.) 6. C. Vividus, nov. sp. 4 .—Viridis, nitens, ciliis tegularum nigris, femoribus nigris viridi-micantibus, genibus tibiisque flavis, maris oculis distantibus et costa alarum non incrassata. Green, shining, cilia of the tegule black, femora black with green lustre, knees and tibie yellow; in the male, the eyes separated and the costa not thickened. Long. corp. 0.09. Long. al. 0.09. Metallic-green, bright, but on the upper side of the thorax with ‘arather thick brownish-yellow dust and therefore more dull. The CHRYSOTUS. 179 eyes are separated by the face, which is comparatively broad for a male ; the face has a rather distinctly impressed middle line, is of a metallic-green color, but opaque on account of the cover of whitish dust. Palpi black, their whitish powder only becomes visible when seen in a very oblique direction. Antenne black, of middle size, their third joint is somewhat longer than in most of the other species, hairy, and of a somewhat irregular form, because that part, where the arista is inserted, is somewhat produced in the shape of alobe. Front metallic-green, dull on account of brownish-yellow dust. Coxw and femora black, the latter with a green metallic lustre; the second joint of the fore coxw, the tips of all the femora, all the tibize and all the tarsi as far as the tip of the first joint, yellow, the end of the feet brownish-black. Hairs and bristles. upon the feet very short, the bristles also very few in number. Pulvilli of the fore tarsi rather small. Cilia of the tegule black. Wings somewhat grayish, with a rather protruding anal angle; the costa shows no thickening; the last segment of the fourth longitudinal vein is scarcely a little inflected, parallel with the third and ends immediately before the extreme tip of the wing. Hab. Illinois. (Le Baron.) Observation.—It is not necessary, when identifying this species, to pay too much attention to the shape of the third joint of the antenne, as it sometimes changes its form, especially when recently developed specimens dry up. The separated eyes, the black cilia of the tegule, the color of the feet, and the costa without a thick- ening, are characters which prevent its being confounded with any other species known to me. 2. Cilia of the tegule pale. a. Costa of the male thickened. %. C. costalis Lozw. % and 9.—Viridis, polline confertissimo ex fusco cinereo opacus, femoribus nigris, genibus tibiisque flavis, maris oculis distantibus et media cost parte valde incrassata. Green, opaqué on account of a very thick brownish-gray dust ; femora black ; knees and tibie yellow; the eyes not contiguous in the male and the middle of the costa thickened. Long. corp. 0.09—0.10. Long. al. 0.09. Syy. Chrysotus costalis Lozw, Neue Beitr. VIII, 64, 5. Male. Ground-color metallic-green, or blue-green, but so thickly covered with brown-gray dust as to conceal this color. 180 DIPTERA OF NORTH AMERICA. [ PART It. Face broad for a male, though a little narrower downward; the dust is of about the same color as the rest of the body, usually, however, somewhat paler. Palpi black, of middle size. The third joint of the antenne small, kidney-shaped, with an entirely apical arista. Front quite opaque on account of its thick dust. The metallic-green ground-color of the upper side of the thorax becomes more visible only when seen from behind. Scutellum and abdomen less thickly covered with dust than the thorax, so that their metallic ground-color becomes more apparent in most direc- tions. The hair upon the abdomen appears, in a-reflected light, of a pale-brownish color. Coxe and femora black, without a dis- tinet green lustre, the second joint of the fore coxe, the extreme tip of all femora, all the tibiz and all the tarsi as far as the tip of the first joint, yellow ; the end of the tarsi dark brown. The hair and bristles upon the feet very short everywhere, the bristles also very scarce; the pulvilli of the fore tarsi rather small. Cilia of the tegule pale. Wings somewhat grayish, with a rather protrud- ing anal angle and of more uniform breadth than in most of the other species; the fore margin of the wings shows a strong black thickening, which commences abruptly at the end of the first lon- gitudinal vein, becomes then gradually thinner and disappears already before the end of the second longitudinal vein; the last segment of the fourth longitudinal vein is not inflected at all, parallel with the third and ends rather exactly in the extreme tip of the wing; the posterior transverse vein is almost at an equal distance from the extreme root and from the tip of the wing. Hiab. Florida. Female. It resembles the male very much, only the dust upon the whole body is more thick and the green ground-color of the abdomen less bright. The face is not very broad for a female; its covering of thick dust has the same color as that on the rest of the body ; although the usual transverse swelling lies somewhat below the middle of the face, it is considerably higher than in the females of all the other species known to me, so that the face is divided by it into two almost equal parts. The wings have the same shape of equal.breadth as in the male, show however no trace of a thickening on the fore margin. Hab. Maryland. (Osten-Sacken.) CHRYSOTUS. 18] 8. C.subcestatus, nov. sp. %.—Viridis, polline raro ex fusco cine- reo aspersus, femoribus nigris, viridi-micantibus, genibus tibiisque flavis, maris oculis distantibus et media parte cost# modice incrassata. Green, sparsely covered with brownish-gray dust; femora black, with green lustre; knees and tibie yellow; the eyes in fhe male separated, and the costa moderately thickened. Long. corp. 0.09. Long. al. 0.09. Metallic-green or blue-green, upon the thorax with not very thick brownish-gray dust and therefore less shining. Face for a male rather broad, towards the bottom somewhat narrower, with very thick brownish-gray dust. Palpi near the root and margin blackish, upon the middle more brownish ; it was not possible to distinguish their color with certainty in the described specimens. Third joint of the antenne very small; arista apical; front quite opaque on account of a covering of brownish-gray dust. The scutellum and especially the abdomen have very little dust and are shining. The hair upon the abdomen is black. Coxe and femora black, the latter with a very bright green metallic lustre ; the second joint of the fore coxe, the tip of all femora, the tibiv and all the tarsi as far as the end of the first joint, yellow; the tip of the tarsi dark brown. The hairs and bristles upon the feet everywhere very short, the bristles at the same time very scarce. Pulvilli of the fore tarsi rather small. Cilia of the tegulz whitish. Wings grayish with a rather protruding anal angle; the anterior margin of the wings shows a not very strong, but distinctly visible thickening, which begins abruptly at the end of the first longitu- dinal vein and thence gradually decreases towards the tip of the wing ; the last segment of the fourth longitudinal vein is scarcely a little inflected, parallel with the third, and ends a little before the extreme tip of the wing; posterior transverse vein rather equidistant from the root and the tip of the wing. Hab. Illinois. (Le Baron.) Observation.—C. subcostatus is easily distinguished from the male of C. costalis by the smaller antennx, the less thickened costa, the thinner cover of dust, and the green metallic lustre of the femora; from all other species it is distinguished by the thickening of the costa. 182 DIPTERA OF NORTH AMERICA. [PART II. b. Costa of the male not thickened. 9. C. discolor Lozw. 4% and ?.—Viridis, nitens, femoribus concolori- bus, genibus, tibiis venisque alarum flavis, maris oculis distantibus et abdomine violaceo. Shining green, also the femora; knees, tibie and veins of the wings yel- low; eyes of the male separated and its abdomen violet. Long. corp. 0.09—0.10. Long. al. 0.10—0.11. Syn. Chrysotus discolor Lozw, Neue Beitr. VIII, 65, 6. Male. Shining green. The face rather broad for a male, a little narrower towards the bottom, with yellow-grayish or rather white-grayish dust upon green ground. Palpi rather small, black. The third joint of the antenne not very large with an apical arista. Front with rather thick brownish-yellow dust upon green ground. The upper side of the thorax and the scutellum bright golden- green, the posterior end of the former and the latter sometimes more blue-green. ‘The brownish-yellow dust on the upper side of the thorax is distinct, but not sufficient to conceal the ground- color. The upper side of the abdomen is bright violet, the basis of the first segment and the lateral margin steel-blue or blue-green. Coxe black-green. Femora dark metallic-green. The tip of all the femora and the tibie yellow; the four anterior tarsi become dusky from the basis so gradually that it is difficult to state where the infusecation begins; on the hind tarsi the yellow coloring ex- tends much farther, so that only the last joints exhibit a distinct dusky tinge. The pulvilli are rather large, especially on the fore tarsi. The hairs and bristles upon the feet are everywhere very short, on the tibiee and tarsi yellowish, with the exception of the stronger bristles at the tip of the middle tibia. The cilia of the tegule are pale. Wings hyaline, scarcely a little tinged with gray, with luteous veins, which become a little more dark towards the tip of the wing; the last segment of the fourth longitudinal vein is parallel to the third and ends exactly at the tip of the wing ; the posterior transverse vein lies rather exactly in the mid- dle between the extreme root and the tip of the wing; the anal angle of the wings is rather protruding. Female. It differs from the male by the following marks: The face broader, but not too much for a female ; the usual transverse swelling is far below its middle. The third joint of the antenne somewhat smaller than that of the male. The abdomen golden- CHRYSOTUS. 183 green, without any trace of a violet coloring. The pulvilli of all the tarsi are very small. Hab. Middle States. (Osten-Sacken.) 10. C. auratus Lorw. 9.—Viridis, thorace et scutello auratis, polline lutescente subopacis, femorum nigrorum apice tibiisque omnibus flavis, facie latiuscula albido-pollinosa, palpis nigris. Green, thorax and scutellum gilded, somewhat dull on account of a Inteous dust; the tip of the black femora and all the tibie yellow; the rather broad face covered with white dust; palpi black. Long. corp. 0.11. Long. al. 0.11. Syy. Chrysotus auratus Loew, Neue Beitr. VIII, 65, 7. Metallic-green. Face even for a female rather broad, with gray-white dust ; the usual transverse swelling lies very far below its middle. Palpi black. The third joint of the antenne rather large for a female, with comparatively long hair. Front golden- green, rather dull on account of a yellowish dust, only a little broader.upwards. The upper side of the thorax greenish-golden, but thickly covered with yellow dust and therefore opaque. Color and dust of the scutellum the same as those of the thorax. Abdo- men of a purer metallic-green and with less dust, near the basis usually more golden-green. Coxe black, the extreme tip of the first joint and the second joint of the fore coxe yellow, the second joint of the hind cox yellowish-brown. Femora black with in- distinct green or bronze-colored metallic lustre; the tip of the four anterior femora is to a larger, and that of the hind femora to a smaller extent, yellow. The tibiae and the tarsi have the same color, but the latter, towards their end, gradually become dusky. The hair upon the feet is everywhere very short, and the bristles very scarce. Cilia of the tegule pale. Wings somewhat grayish with brown veins; the posterior transverse vein lies about midway between the extreme root and the tip of the wing. Hab. New York. (Osten-Sacken.) B. Femora of a pale color. 11. C. pallipes Lozw. % and 9.—Viridis, nitens, coxis anticis pe- dibusque flavis. Shining green, the fore coxe and the feet yellow. Long. corp. 0.09—0.10. Long. al. 0.10—0.11. Syx. Chrysotus pallipes Lozw, Neue Beitr. VIII, 66, 8. 184 DIPTERA OF NORTH AMERICA. [PART II. Both sexes resemble each other very much. Metallic-green, shining. The eyes of the male meet almost completely, so that the face appears small, linear; in the female it is broader and has the usual transverse swelling far below its middle. The dust upon it is white in both sexes. The palpi are rather small and covered with whitish dust so as to conceal the ground-color, which appears to be more yellowish than blackish. The third joint of the an- tenne is not large, even in the males, and but little oblique. Front green, rather dull from whitish dust. The upper side of the thorax has a distinct whitish dust, which however does not conceal the ground-color. The black hair upon the abdomen is somewhat longer than in most of the other species. The whole fore coxe, the tip of the middle and hind coxe and the whole feet are yel- low, even the tarsi are only slightly dusky towards the tip. Cilia of the tegule pale. Wings a little grayish, with brownish or brown veins ; the posterior transverse vein lies considerably nearer to the root than to the tip of the wing. Hab. Middle States. (Osten-Sacken.) a2. €. picticormis, nov. sp. 4,.—Minutus, viridi-aeneus, modice nitens, oculis infra antennas contiguis, primo antennarum articulo rufo, coxis anticis pedibusque flavis. Small, bronze-green, moderately bright ; the eyes contiguous below the an- tenn ; first joint of the antenne red; fore coxe and the feet yellow. Long. corp. 0.08. Long. al. 0.08. Very small, bronze-green, moderately shining. The eyes con- tiguous below the antenne. The antenne small, the first joint red, the following two black, the third rather small and a little oblique ; arista apical. Fore cox and feet somewhat brownish- yellow. The tip of the hind femora on the upper side and all the tarsi from the tip of the first joint, brown. The hind tibie are fringed on the upper side only with a few delicate, not very con- spicuous bristles, and show a dusky tinge at the tip. The color of the cilia of the tegule I cannot positively state. Wings of the usual structure, grayish-hyaline with brownish-black veins; the posterior transverse vein is rather short and lies before the middle of the surface of the wings. Hab. Mlinois. (Le Baron.) Observation.—This description is made only after a single spe- TEUCHOPHORUS.—SYMPYCNUS. 185 . cimen, and will probably require some correction; the color of the first joint of the antenne is so characteristic for this species, that there is no probability of its being mistaken for another. Gen. XXXI. TEUCHOPHORUS. The genus Teuchophorus remains hitherto confined to but a few European species. They rather resemble the small species of Chrysotus, but are easily distinguished from them by the follow- ing characters: Antenne smaller; arista distinctly dorsal. The abdomen of the male somewhat compressed laterally. The pos- terior transverse vein, which is far distant from the margin of the wing, has an extremely steep position, so that its posterior end is farther from the root of the wing than its anterior end. The feet of the male are fringed with isolated, strong, stiff bristles, and its hind tibiz are curved and adorned in various manners. Besides, in all the hitherto known species, the costa of the male is thickened in the same manner as that of the previously described C. costalis. ’ The other characters of the genus coincide with those of Chry- sotus. The name of the genus (from eizos, armor, and >épa, I bear) has probably reference to the peculiar organs with which the male is provided. Gen. XXXII. SYMPYWCNUS. Characters. Small, but little shining species, of arather slender shape. The face is not narrower upwards. Antenne rather small, in the female shorter than in the male; the first joint with- out hairs; the arista is inserted upon the edge of the third joint in the vicinity of its basis. The metathorax is not unusually pro- truding nor elongated. The abdomen of the male is more or less compressed laterally. The hypopygium is small, more or less im- bedded ; its outer appendages small, sometimes not distinctly visi- ble. The fourth longitudinal vein, towards its end, is perceptibly, although only slightly, approximated to the third and very little convergent towards it; it ends somewhat before or into the tip of the wing ; the posterior transverse vein before or upon the middle of the wing, distant from its margin; the sixth longitudinal vein becomes indistinct long before it reaches the margin of the wing. 186 DIPTERA OF NORTH AMERICA. [PART Ir. The feet are sparely fringed with bristles; the hind tarsi shorter than the hind tibizw and their first joint without bristles. The genus Sympycnus stands in the closest proximity to Anep- sius, is, however, very easily distinguished from it by the glabrous- ness of the first joint of the antenna. Among the genera which have no hair upon the first joint of, the antennee, Xanthochlorus, Teuchophorus and Campsicnemus are the next to it; they differ from Sympycnus by the following characters: 1. Xanthochlorus by the depression on the posterior end of the thorax and the pre- vailing yellow color of the body and of the bristles upon the thorax ; 2. Teuchophorus by the steeper position of the posterior transverse vein, the thickening of the costa in the male, the isolated and strikingly strong bristles upon the feet and the entirely hidden hypopygium ; 3. Campsicnemus by the elongated metathorax, by the last segment of the fourth longitudinal vein, which is parallel to the third and ends always beyond the tip of the wings and by the face of the male, which is very narrowed upwards, &e. The name of the genus (from oiunvxvos, crowded together) has reference to the crowding together of the ends of the fourth and . the third longitudinal veins, whereby Sympycnus is distinguished from Campsicnemus and many other related genera. I am only acquainted with species from Europe, Africa and North America; the majority of the North American species differ from the European and from the South African species by the fourth longitudinal vein ending exactly into the tip of the wing, while in the other species, this end is distinctly before the tip. As they agree in all other details of organization, there is no ground for a generic separation, but it would be advisable to form of them a group within the genus Sympycnus. The charac- ter of the genus Sympyenus, as hitherto established, requires, with regard to these species, a slight modification, which I have already introduced. Table for the determination of the Species. 1 tertianus, nov. sp. 9 a“ Fourth longitudinal vein ending before the tip of the wing. Fourth longitudinal vein ending into the tip itself. iP { Antenne entirely black. 2 frontalis Lw. ~ Antenne pale near the basis. 3 { Thorax with dark longitudinal lines. 3 lineatus lw. Thorax without dark longitudinal lines. 4 nodatus Lw. SYMPYCNUS. 187 Systematical arrangement of the Species. I, The fourth longitudinal vein ending before the tip of the wing. 1. tertianus, n. sp. II. The fourth longitudinal vein ending into the tip itself. 2. frontalis Lw. 4. nodatus Lw. 3. lineatus Lw. Description of the Species. I. THE FOURTH LONGITUDINAL VEIN ENDING BEFORE THE TIP OF THE WING. 1. S. tertiamus, nov. sp. % and 9.—Ex cinereo virescens, sub- opacus, thorace non lineato, duobus primis antennarum articulis, pal- pis, ventre, coxis pedibusque dilutissime flavicantibus, tarsis inde ab articuli primi apice nigricantibus. %. Articulo tarsorum posticorum tertio abbreviato et prope apicem pilis paulo longioribus hirto. ©. Pedibus simplicibus. Gray-greenish, rather dull; thorax without dark lines; the first two joints of the antenne, palpi, venter, cox and feet pale-yellowish; the tarsi from the tip of the first joint blackish. %,- The third joint of the hind tarsi shortened and rough on account of some longer hairs near the tip. Q. Feet plain. Long. corp. 0.10. Long. al. 0.10. Dark grayish-green, rather dull. The front seems to be of the same color. Face grayish. Palpi and the first two joints of the antenne white-yellowish ; the third joint blackish, in both sexes rather rounded. Arista in‘both sexes plain. Venter whitish-yel- low as far asits tip. The hypopygium, as in the other species of this genus, rounded and semi-imbedded ; its lancet-shaped exterior lamellz small, but distinctly perceptible and of rather dark color. The posterior margin of the pleure and the cox white-yellowish ; the four posterior cox near the basis more or less infuscated. Feet white-yellowish, with black, somewhat scattered hairs, on the middle and the hind tibiz with a few black bristles. The tarsi from the tip of the first joint very much infuscated, the hind tarsi from the same spot almost entirely black. The joints of the fore tarsi of decreasing length in the female, while in the male the third and fourth joints are of about the same length. The joints of the middle tarsi are of decreasing length in both sexes. The first joint of the hind tarsi is, in both sexes, a little shorter than 188 DIPTERA OF NORTH AMERICA. [PART i the second; the following joints are, in the female, of decreasing length; in the male the third joint is somewhat shorter than the fourth, and at its end, on the posterior side, beset with longer black hairs. Wings towards the basis very much narrowed ; the posterior transverse vein is before the middle of the disk of the wing, but rather exactly in the middle between the extreme root and the tip of the wing; the fourth longitudinal vein ends some- what before the extreme tip of the wing; in the female, however, at a very small distance from it. Hab. Sitka. (Sahlberg.) II. THE FOURTH LONGITUDINAL VEIN ENDING INTO THE TIP OF THE WING. 2. 8. frontalis Lozw. % and 9.—Nigricans, fronte lete violaceo splendente, antennis totis nigris. Blackish; the front bright violet; the antenne entirely black. Long. corp. 9.11. Long. al. 0.12—0.13. Syn. Sympycnus frontalis Loew, Neue Beitr. VIII, 67, 1. Face in the female of moderate breadth, in the male below very narrow, towards the antennz broader, with white dust, so that the blue ground-color becomes very little visible. Antenne black, larger than in the next following species; the first joint rather long; the third joint only with a very short pubescence, larger and ovate in the male, smaller and rather rounded in the female. Front bright steel-blue or violet. Cilia of the inferior orbit whitish. Upper side of the thorax dull on account of a thick gray-brownish dust, nevertheless the green or blue ground-color is distinctly visible through the dust. The scutellum is of the same color as the upper side of the thorax, and has no hairs besides the usual bristles. Abdomen black or greenish-black, the second segment usually with a complete or almost complete yellowish transparent transverse band, the third segment with one, which is interrupted in the middle; moreover the first and fourth segments are usually yellowish-transparent on the lateral margin. The venter is always white-yellowish. The hypopygium, of the same color as the abdomen, is somewhat larger than in the other species of this genus known to me, and but very little im- bedded ; its outer appendages are so small and hidden that I can- not distinctly perceive their shape. The posterior margin of the SYMPYCNUS. 189 pleure, all the coxe and the feet yellowish. Fore coxx only with pale hairs. The femora have, besides the usual small bristles im- mediately before the tip, no other bristles. The fore tibiw are without bristles, the middle and. hind tibisx with but few bristles. The fore tarsi are more or less infuscated towards their tip; in the female the joints are of decreasing length, the first nearly as long as the three following together ; in the male, on the contrary, the first joint is extremely shortened and not quite as long as the last one, the second almost as long as the two following together, the third considerably shorter than the fourth joint, which latter is fringed on its upper side with little curved hairs. The joints of the middle tarsi, which towards their end become more and more dusky, are of decreasing length in the female; in the male their first joint is considerably longer than the following four joints together, the second as long as the following three together, the third and fourth of almost equal length, but very short, on the anterior side bearded with delicate little fringe-like hairs; the fifth joint is somewhat more slender than the two preceding joints and almost as long as these taken together. The hind tarsi, from the tip of the first joint, are more or less infuscated, the first joint much shorter than the second, and the following joints of decreas- ing length in both sexes. The tegule with pale-yellowish cilia. Wings rather long and narrow, but moderately pointed towards the root, in the female less tinged with gray than in the male ; the fourth longitudinal vein is parallel with the third and ends rather exactly into the tip of the wing; the posterior transverse vein is perpendicular and lies before the middle of the wing. Hab. Pennsylvania. (Osten-Sacken. ) o. 8. limeatus Lorw. 4% and 9.—Cinereus, fronte nigra, antennarum basi, scutelli margine, ventre pedibusque flavis. Gray, front black; the root of the antenne, the margin of the scutellum, the venter and the feet yellow. Long. corp. 0.10—0.11. Long. al. 0.11—0.12. Syx. Sympycnus lineatus Lozw, Neue Beitr. VIII, 67, 2. Brownish-cinereous, opaque. Face covered with whitish dust upon black ground; in the female it is rather narrow, in the male so much narrowed that the eyes are contiguous on the lower part of the face. Palpi rather blackish. Antenne rather short, the 190 DIPTERA OF NORTH AMERICA. [PART I. third joint smaller than in the next preceding species, in the male elongated-ovate, in the female considerably shorter, in both sexes with a basal arista; the first joint is always of a yellowish color, the two following paler or darker brown, sometimes rather black- ish. Front black. Cilia of the inferior orbit pale. Upper side of the thorax brownish-cinereous, entirely opaque; the humeral corner usually brownish-yellow ; on its upper side there are several dark longitudinal lines, the more distinct of which are usually a delicate middle line and two stronger lines alongside of it; the latter bear the middle rows of bristles. These lines disappear, however, when looked upon from another direction, and are not equally distinct and sharply defined in all specimens. Scutellum on the middle of the upper side gray with a metallic-blue lustre, on the margin yellow. Pleure gray, their inferior portion more yellow. The metathorax blackish-gray. Abdomen in well colored specimens brownish-gray, in less matured ones more yel- ‘lowish-brown ; the whole venter always pale-yellowish. The small hypopygium is mostly shining black and rather imbedded; the outer appendages are larger than usual in the species of this genus and have almost the form of small filiform lamelle; their color is a dingy yellowish-brown. Coxe and feet yellowish. Femora only with the usual bristles immediately before the tip. Fore tibise without bristles. Middle and hind tibiz with a moderate number of short black bristles. The first joint of the fore tarsi about as long as the three following, which are of decreasing length, most of the fourth and the whole fifth joint black-brown. Middle tarsi from the tip of the first joint more or less dusky ; their first joint about as long as the four following together, which are of decreasing length. The first joint of the hind tarsi much shorter than the second, the following of decreasing length. Tegule with brown margin and with pale-yellowish cilia. Wings tinged with gray, in the male with a cuneiform tapering towards the basis; this is not the case in the females; the fourth longitu- dinal vein is parallel with the third and ends rather exactly into the tip of the wing; the posterior transverse vein is perpendicular and lies rather upon the middle of the wing in the female, consi- derably beyond it in the male. Hab. Virginia; New York. (Osten-Sacken.) SYMPYCNUS. 191 A. S8. modatus Lorw. % and 9.—Cinereus, margine primi antenna- 1mm articuli infero, fascié abdominis basali maculisque lateralibus, ven- tre et pedibus flavicantibus, femorum posticorum apice nigro, seta an- tennali maris capitulum minutum apicale gerente. Gray, the lower margin of the first joint of the antenne, a band near the basis of the abdomen, lateral spots upon it, venter and feet, yellowish ; the tip of the hind femora blackened ; the arista of the male at the tip with a small button. Long. corp. 0.10—0.11. Long. al. 0.11—0.12. Syy. Sympycnus nodatus Lozw, Berl. Ent. Zeitsch, VI, 215, 68. Face of the male very narrow, upwards a little broader, with white dust; the face of the female much broader, not perceptibly narrowed below, and much less thickly dusted, so that the black ground-color is distinctly apparent. Antenne of a stouter struc- ture, and even a little larger than in S. frontalis ; the first joint rather long, upon the under side always of a yellowish color, some- times yellow, with the only exception of its upper edge, in which case the yellow coloring extends also on the lower edge of the second joint; the third joint in the male is broad ovate, in the female rounded. Arista basal, in the female somewhat shorter and plain, in the male longer and enlarged at the tip into a small button. The front is gray, but appears in some directions almost black. Upper side of the thorax brownish-gray, opaque, without distinct longitudinal lines, with black bristles. Scutellum usually darker than the upper side of the thorax and without hairs, except the usual bristles. Pleure whitish slate-gray, their posterior margin yellowish. Abdomen of a bronze-black, moderately bright coloring, sometimes with a green or blue metallic lustre ; upon the second segment there is a very broad, usually inter- rupted, transverse band; upon the third segment there is also a transverse band, usually interrupted in the middle, and consisting of two yellow lateral spots; the fourth segment has usually a yel- low spot on each side. The hypopygium, being of the same color as the abdomen, is of a similar structure as in S. frontalis ; its small, not easily perceptible, appendages are black. Coxe and feet yellowish. The fore coxe are covered only with whitish hair, nevertheless the stronger hairs on the tip assume sometimes a blackish appearance. The femora without any other bristles but those small ones, usually found before the tip; the hind femora are of a brownish-black color to a rather large extent, though their extreme tip is again paler. The fore tibie have only a single 192 DIPTERA OF NORTH AMERICA. [PART IT. small bristle, which is on their upper side, not far from the root ; the middle tibize have only a few bristles; the hind tibie have a larger number of bristles, but they are mostly very short ; in the male there is one bristle on the under side, not far from the basis, which is remarkable for its length. The fore tarsi have 14 the length of the tibie; in the male the first joint is very much shortened and not as long as the last one, the second is as long as the three following together, and usually a little blackened on the extreme tip, the three last ones are black and very little decreasing in length; the last one with somewhat shorter hairs than the two preceding ; in the female the fore tarsi are gradually of a darker black-brownish color towards the tip, and their joints are of a de- creasing length, the first somewhat longer than the two following, but not quite so long as the three following together. The mid- dle tarsi of the male but little exceed the tibiz in length; their first joint is of a plain structure, but almost 14 the length of the other joints and blackened at its tip ; the last four joints are black ; the second is as long as the last three together, gradually enlarged towards its end, and at the end on the outside, in consequence of the greater length of the appressed black pubescence, elongated into a kind of projection ; the third and fourth joints have on the posterior side a few erect crooked hairs. The middle tarsi of the female are plain, scarcely shorter than those of the male, towards the tip gradually of a darker black-brown color; their joints are of a decreasing length; the first is longer than the following two, but shorter than the following three together. The hind tarsi are of the same structure in both sexes, shorter than the tibie ; their last four joints black ; the first joint is scarcely longer than the third, the second at least as long as the third and fourth together. Hal- teres yellowish. Tegule with a narrow black margin ; their cilia appear yellowish in a reflected light, seen towards the light, however, blackish, in the female even often black. Wings grayish hyaline, in the male with the posterior margin somewhat wavy, and towards the basis much more pointed than in the female; the fourth longi- tudinal vein is parallel to the third and ends precisely at the tip of the wing; the posterior transverse vein is perpendicular and lies upon the middle of the wing. Hab. Mlinois. (Le Baron.) CAMPSICNEMUS. 193 Gen. XXXIII. CAMPSICNEMUS. Characters. The first joint of the antennz without hairs on the upper side; the third more or less pointed, distinctly hairy; the arista inserted on its back, near the basis. Face upwards very narrow, especially in the male. The metathorax is elongated ; the abdomen flattened. The small hypopygium imbedded; its appendages extremely small. Feet slender; the first joint of the hind tarsi without bristles. The males are usually remarkable by the peculiar structure of their tibie and often also of the tarsi. The last segment of the fourth longitudinal vein, about its first quarter, runs over a distinct convexity of the wing, is parallel to the third longitudinal vein and ends beyond the tip of the wing. _ The genus Campsicnemus possesses so many remarkable cha- racters that the species belonging to it cannot either be mistaken or confounded with species of another genus. The name of the genus (from xduyes, the curve, and xr7juy, the tibia) was given be- cause the males of many species are distinguished by the peculiar curvature of their middle tibive. The species hitherto known belong to Europe and North Ame- rica. Description of the Species. 1. C. hirtipes Lorw. 4 and 9.—Obscure olivaceus, facie ochracea, alis infuscatis, coxis anticis pedibusque ex testaceo rufis, tarsis preter basim ex fusco nigris. %,. Primo tibiarum intermediarum dimidio incrassato, tarsisque anticis setas longiores gerentibus. Q. Pedibus simplicibus. Dark olive-brown, face ochre-colored ; wings blackish-gray ; fore coxe ana feet brownish-red ; tarsi black-brown with the exception of the root. %,. The thickened basal half of the middle tibie and the fore tarsi beset with long bristles. ©. Feet plain. Long. corp. 0.08. Long. al. 0.13. Syn. Campsicnemus hirtipes Loew, Neue Beitr. VIII, 68, 1. Metallic olive-brown. Face very narrow, yellowish-brown, with a bright golden-green spot immediately under the antenne, which is not always easily discernible. Antenna entirely black ; their third joint in the male long and pointed, in the female short 13 194 DIPTERA OF NORTH AMERICA. [PART II. and small. Front black with a violet, often very bright lustre, immediately above the antennz with a pale copper-reddish spot. The cilia on the inferior orbit pale. The upper side of the thorax often shows violet reflections. The scutellum shining violet, rarely shining black with an indistinct violet lustre. The color of the abdomen is usually more greenish-black. Fore coxe brown- ish-yellow, near the basis blackened ; middle and hind coxe black with brownish-yellow tip. Feet yellowish-red or brownish-red. The extreme tip of the knees blackish-brown and the tarsi from the tip of the first joint black. Sometimes the upper side of the femora is distinctly infuscated. Cilia of the tegule black. Wings tinged with blackish-gray and with black veins; the convexity of the wings lies before the first quarter of the last segment of the fourth longitudinal vein. Male. Its fore femora are thickened as far as their middle, and on the under side, precisely at the end of this thickening, they are densely bearded with stiff little bristles ; the fore tibie are visibly stouter than in the female, beset on the under side with numerous and erect, on the upper side with less numerous and less erect bristles; fore tarsi with unusually long hairs, especially on their first two joints. The structure of the middle femora is similar to that of the fore femora, though their thickening is less strong and reaches as far as the tip; the thick beard on the under side, formed of short stiff bristles, is thus brought nearer to their end. The middle tibize are of rather irregular structure; from the basis to about their middle they are distinctly thickened and fringed on the upper side with a few long black bristles, on the under side they are provided with a small tubercle, beset with short bristles. That part of the middle tibize, which is not thickened, is of a plain struc- ture, though beset on the under side with a row of rather long, black, bristle-like hairs. The middle tarsi and the whole hind feet are of a plain structure. Hab. Pennsylvania. (Osten-Sacken.) 2. C. claudicams, nov. sp. % and 9.—Olivaceus, facie ochracea, alis infuscatis, punctum nigrum in ultimo vene quarte segmento geren- tibus, coxis anticis ex testaceo fuscis, pedibus ex rufo testaceis. %,. Tibiis intermediis crassissimis, varis, supra nigro-spinulosis, tarsis in- termediis totis nigris, articulo primo crasso, recurvo, supra nigro-setoso, tarsis anticis posticisque simplicibus, inde ab articuli primi apice nigris. . Pedibus simplicibus, tarsis omnibus inde ab articuli primi apice nigris. CAMPSICNEMUS, 195 Olive-green ; the face ochre-yellow; wings infuscated, with a black spot upon the last segment of the fourth longitudinal vein; fore coxe red- dish-brown ; feet brownish-red. %,. Middle tibiz very stout, crooked, on the upper side with small black spines; the middle tarsi entirely black; their first joint thickened, curved upwards, on the upper side with black bristles ; fore and hind tarsi plain, from the tip of the first joint black. Q. All the feet plain; all the tarsi from the tip of the first joint, black. Long. corp. 0.09. Long. al. 0.14. Olive-green; thorax more bright than the abdomen, near its fore margin with a few strikingly green reflections. Front black- ish-blue. Antennz entirely black; the third joint small and not pointed. Face brownish ochre-yellow. Palpi ochre-brownish. Proboscis black. Cilia of the posterior orbit black above, below pale. Fore coxe brownish-red, sometimes yellowish-red, with a white reflection near the root and a large part of the outside brown; the four posterior cox grayish-black, the trochanters brownish-black. Feet yellowish-red ; the knees, especially those of the hind feet, more or less infuscated ; all the femora, the fore and hind tibix, as also the fore and hind tarsi are plain in both sexes, the latter blackened from the tip of the first joint. The middle tibiz and middle tarsi are only in the female of the same plain structure and of the same color, while they are distinguished in the male by a very different structure ; for its middle tibie are uncommonly stout and somewhat curved; the greatest thickness is in their middle; the last two thirds of the posterior side are excised and provided with a brown stripe ; before this excision, almost on the upper side of the tibia, there is a longitudinal row of black spine- like bristles, which does not occupy, however, the basal third and the apical one-fourth of the tibia; the second half of the tibia bears upon the other two sides a few long black bristles; the middle tarsi of the male are entirely black; their first joint is somewhat curved upwards at the tip, stout and near the extreme basis a little more swollen, on the upper side excised furrow-like and fringed with a row of black bristles; the following joints are plain, the second not quite so long as the third, and at the extreme basis sometimes of a yellowish-brown color. Wings with a dis- tinct smoky black tinge and with a small blackish spot upon the last segment of the fourth longitudinal vein. Hab. Sitka. (Sahlberg.) 196 DIPTERA OF NORTH AMERICA. [PART II, Gen. XXXIV. PLAGIONEURUWUS. This genus has been established by me (in the Wien. Entom. Monatschr. I, 48) on the species described below, and known as yet only in the female sex, but the extraordinary and peculiar cha- racters of which rendered the establishment of a new genus neces- sary. The whole habitus approaches the species of Gynwopter- nus and Pelastoneurus most, differs, however, from both by the first joint of the antenne being entirely without hairs and by the posterior transverse vein having an unusually oblique position ; from Gymnopternus it differs moreover by the course of the last segment of the fourth longitudinal vein, which is almost like that of the genus Pelastoneurus. The peculiarities of the female seem to indicate that the hypopygium of the male is disengaged. The establishment of the characters of this genus on so scanty materials presents many difficulties. I believe, however, that the following may be regarded at least as a temporary definition. The first joint of the antenne without hairs, the second not reach- ing thumb-like over the third, on the upper side much longer than on the under side; the third joint short, without distinct hair and with a dorsal arista. The posterior transverse vein very oblique ; the last segment of the fourth longitudinal vein runs much forward in its second portion and ends in the vicinity of the third longitudinal vein, so that the first posterior cell becomes very narrow near its end. The first joint of the hind tarsi is without bristles. The name of the genus (from zaraycos, oblique, and vedpor, the nerve) has reference to the extraordinary obliqueness of the pos- terior transverse vein. 1. P. univittatus Lorw. %.—Viridis, thoracis vitté media abdo- minisque fasciis latis purpureis, antennis pedibusque nigris, femoribus virescentibus, genibus tibiarumque anteriorum basi testaceis, alis cinereis. Green, middle stripe of the thorax and broad bands of the abdomen of a purple color; antenne and feet black, the knees and the basis of the four anterior tibia dusky yellow; wings gray. Long. corp. 0.25. Long. al. 0,23—0.24, Syn. Plagioneurus univittatus Lozw, Wien. Ent. Mon. I, 43.—Lorw, Neue Beitr. VIII, 69. PLAGIONEURUS,. 197 Face not very broad for a female, somewhat elevated, upon its larger upper part with an impressed middle line ; the smaller, con- vex lower part is separated from the upper part by a transverse swelling, incomplete in its middle ; the dense, almost silvery-white dust, conceals a great deal of the ground-color of the face. An- tenne black. The third joint with a short, but sharp tip; the arista rather strong, with a very short but distinct pubescence. Front bright metallic blue-green. The cilia on the upper orbit black, on the entire lateral and lower orbits white. Thorax me- tallic-green, only on the fore and lateral margin with a little whitish dust, upon the middle with a not very sharply defined longitudinal stripe, which in some directigns appears more black, in others more brown and purple, sometimes of a beautiful cinna- mon-brown color. Scutellum metallic-green, with the usual two strong bristles, otherwise bare. On the segments of the abdomen the two first thirds have a dark, the last third a more pale color ; the color of the former part shifts from black, through bronze- brown into a beautiful dark violet; on the last third the color is chiefly metallic-green, nevertheless it changes on the anterior part into steel-blue, and on the hind margin of the segment into golden- green or almost a coppery color; on the lateral margin the last third of the segments is covered with white dust. Coxe black with a rather dusky-green lustre; the foremost with white dust, clothed with delicate white little hairs, and at the tip with a few black bristles. Feet black; femora with green lustre; knees brownish-yellow ; this coloring extends on the fore tibiz as far as the middle, on the middle tibie as far as the first third, while on the hind feet it is confined to the tip of the knee. The femora have on the under side from the basis almost as.far as the tip, erect, but short, whitish hairs ; otherwise their hair is black ; mid- dle and hind femora have on the front side before the tip a few insignificant black bristles. The hair upon the tibie is altogether black, very short, only on the upper side of the hind tibie some- what longer, so that its great density is easily perceived; all the tibiz are beset with short and not very numerous black bristles. Wings tinged with smoky gray, the veins brown-black ; the pos- terior transverse vein is so very much oblique as to run parallel to the hind margin of the wing; the last segment of the fourth longitudinal vein approaches the margin of the wing rather closely, without changing its course, then, however, it suddenly turns 198 DIPTERA OF NORTH AMERICA. [PART 1 towards the front, so as to end rather far from the tip of the wing in the vicinity of the third longitudinal vein. Hab. Cuba. (Riehl.) Observation.—This species is also found in Brazil. Gen. XXXV. LEIANCALUS. The genus Liancalus shows the closest relationship to the genera Scellus and Hydrophorus. It agrees with them in the following characters: The body in general is beset with neither numerous nor long bristles. Wings elongated; the posterior transverse vein very closely approximated to the margin of the wing ; feet elongated and slender; the first joint of the hind tarsi on the upper side without bristles, not shorter than the second, but in the majority of the species, longer. Face in both sexes broad, provided with a small tubercle upon the lowest third of each side of the orbit, and with an indistinct swelling running from one tubercle to the other. Antenne rather short, the first joint without hairs; the apparently bare arista dorsal, distinctly two- jointed. The hypopygium of the male imbedded. The above mentioned three genera differ sufficiently from the other genera of the Dolichopodide by the above stated characters, which they have in common. The genus Ziancalus in particular, however, differs from Scellus and Hydrophorus in the following points: 1. All the femora are slender and unarmed, while the genera of Scellus and Hydrophorus have the femora very much thickened toward the basis, which at least in the males, is armed on the under side; 2. The segments of the abdomen are beset with bristles before the posterior margin, which is not the case in the species of Scellus and of Hydrophorus. The genus Liancalus contains as yet only three European and one North American species. They form two groups ; in the first the seutellum has only four bristles and the exterior appendages of the hypopygium are more lamelliform, while in the second the seutellum has six bristles and the exterior appendages of the hypopygium are filiform. To the first group belongs Liancalus lacustris Scop. and leucostomus Loew, to the second L. virens Scop. and the following North American species. The name of the genus (from asios, smooth, and ayxday, arm) LIANCALUS. 199 has reference to the unarmed fore feet, by which it is distinguished from the next related genera of Scellus and Hydrophorus. i. L. gemualis Lorw. % and 9.—Virescens, thoracis lineis quatuor abdominisque fasciis obscuris, pedibus ex nigro viridibus, genibus flavis, alis maris macula apicali nigra, guttam candidam includente, ornatis. Greenish, four lines upon the thorax, and the bands upon the abdomen dark, feet blackish-green with yellow knees; the tip of the wing in the male with a black spot, which contains a snow-white drop. Long. corp. 0.26—0.28. Long. al. 0.31. Syy. Liancalus genualis Lozw, Neue Beitr. VIII, 70, 1. Closely related to the European ZL. virens Scop. and very much like it, though differing from it in the neuration and the picture of the wings, as also by the greater length of the filiform append- ages of the hypopygium. Blue-greenish, somewhat gray from pale dust. Face green or blue with rather whitish dust, which, how- ever does not conceal the ground-color. The large black palpi, fringed with black and comparatively long hair, when seen from the side, usually appear entirely gray-yellowish on account of the dust, with which they are covered. Front green and somewhat spotted with whitish dust. Antenne entirely black. The cilia of the posterior orbit black above, whitish below. The upper side of the thorax has two narrow, linear longitudinal stripes, separated by a reddish-gray middle line; these stripes are rather black in fully colored specimens; there are besides two lateral stripes, the posterior part of which is bifurcated near the trans- verse suture. Thus, not much is left of the beautiful blue-green color, except two broad longitudinal stripes, bearing the stronger bristles. Scutellum with six bristles, as in J. virens. The ab- domen is provided with broad, copper-colored or bronze-brown, sometimes almost black, transverse bands, on the posterior margin of the segments; on the edge of these bands the ground-color of the abdomen changes often into yellowish-green. Cox, femora and tibiz metallic black-green ; the knees yellow ; the tarsi black. Fore coxe elongated, cylindrical, on the front side with long whitish hair, at the tip only with a few small black bristles. In the male the second joint of the fore tarsi is uncommonly short- ened and somewhat thickened, so as to be the shortest of all joints, and almost as broad as it is long. Cilia of the tegula whitish. 200 DIPTERA OF NORTH AMERICA. [PART II. Wings with black veins, hyaline, in the female with but few irre- gular gray spots upon the apical half, in the male moreover near the tip with a few grayish-black longitudinal stripes, and on the tip itself with a black spot, containing near the end of the fourth longitudinal vein anteriorly a round drop, which, the light falling through it, has a snow-white reflection; on the anterior margin of this drop, in the black, there is always a small paler spot. The outline of the wings in the male differs considerably from that of the female, being not only narrower, but also sinuated on their whole posterior margin in a peculiar manner. The ex- terior appendages of the short black hypopygium are two very long threads, which reach back almost as far as the basis of the abdomen, and which are beset on their whole length with very long pale hairs. Hab. Middle States. (Osten-Sacken.) Gen. XXXVI. SCELLUS. Characters. First joint of the antenne comparatively narrow, bare; the second short; the third rounded, elongated only in a hitherto undescribed European species, not excised on the edge. Arista dorsal, apparently bare, distinctly two-jointed. The front on the vertex but little deepened, a little narrower anteriorly. The eyes much higher than broad, encased below by the linear cheeks. Face of middling breadth, very long, reaching somewhat below the lower corner of the eye; its lowest sharply-edged part is separated from the narrowly-margined eyes by an incision, which turns away from the eyes on its upper end. Palpi recum- bent, of middling and about equal size in both sexes. Proboscis stout. Upper side of the thorax upon its middle with but short bristles. Scutellum flat, with two bristles. Abdomen with- out bristles and only with scattered and very short hairs. The abdomen of the male has five segments ; the first four are normally developed, while the fifth is usually shortened, often also of a different color; the following segment is formed by the short, half-imbedded hypopygium. At its lower end there are two small, dark lamella, directed obliquely downwards, which lie so close together as to present the shape of a stout, dentiform pro- jection ; besides these, the comparatively thick penis, bent down- ward and curved, may be seen, but no other appendages. Between a SCELLUS. 201 the fourth and fifth abdominal segments of the male, however, two long, mostly pale-colored tape- or thread-like appendages protrude, which are turned either backward or outward; their place of in- sertion seems to forbid us to take them for representatives of the ordinary external appendages of the hypopygium ; thus, we are led to regard as such the previously mentioned inferior appendages ; if we do this, then the representatives of the interior appendages will be wanting, unless these same tape- or thread-like appendages are taken for them. If the point of insertion of the tape-like - appendages was really at the place where they first appear on the outside, then the question would be solved, as in such a case they could not be considered as appendages of the hypopygium ; that however, this is not the case, and that they rather originate much further inside, and proceed from there upwards between the fourth and fifth abdominal segments, before they reappear on the surface, can be distinctly seen in many specimens; to ascertain their true place of insertion requires the anatomical examination of fresh specimens, for which I have no opportunity at present. The form and position of the hypopygium and of its appendages in the males of Scellus has so many peculiar features, that it is difficult to arrive at a conclusion about the true meaning of its different parts. The female abdomen consists of five normally developed segments, followed by one segment more, which is shortened, retracted, and of a different color; the extreme, somewhat opaque tip of the female abdomen is beset with black bristles. The feet are generally bare, middle and hind feet much longer than the fore feet, and, except the thickening of their femora, which belongs to the males of some species, they are more slender than the fore feet; fore femora thickened towards the basis, on the under side with nume- rous bristles ; fore tibis on the under side with bristles, elongated at the end into a large tooth, which is still larger in the males than in the females; the males have, moreover, a strong spine on the inside, not very far from the basis; the middle tibiwe of the male are variously decorated with long curly hairs and stiff bris- tles, while those of the female are plain; the hind tibie and the feet in both sexes plain, the joints of the latter of decreasing length; the empodium distinct. Wings long and narrow; the posterior transverse vein oblique and close to the margin of the wing; the third and fourth longitudinal veins converging, the 202 DIPTERA OF NORTIT AMERICA. [PART IL. sixth almost entirely obliterated or existing only as but a short rudiment. In the genus Liancalus we have already mentioned the charac- ters which this genus has in common with Seellus and Hydro- phorus, as also those which distinguish Scellus from Liancalus ; to the latter may be added the presence of the two appendages, peculiar to the males of Scellus. The presence of these append- ages also distinguishes the species of Scellus from Hydrophorus, where they are entirely wanting. Moreover the under side of the fore femora and of the fore tibiz in the species of Scellus is beset with long spines, catching into each other when the knee is bent, while in the species of Hydrophorus there are at the utmost some spine-like bristles on the under side of the fore femora near the basis, otherwise the under side of the fore femora and of the fore tibizw is only beset with very short thorn-like bristles. The name of the genus (from oxearos, with crooked feet) has reference to the peculiar structure of the fore feet. I know as yet only six species of Scellus, of which three are peculiar to North America, one is common to Europe and North America, and two are exclusively European; one of the latter species, occurring in Sweden, is as yet undescribed. Table for the determination of the Species. 1 { Wings entirely blackened. 1 exustus Walk. Wings not entirely blackened. 2 Apical half of the wings black. 2spinimanus Z//. { Apical half of the wings not black. 3 3 | Wings entirely tinged with blackish gray. 3 avidus, n. sp. Wings scarcely a little tinged with gray. 4 filifer, n. sp. Description of the Species. a. S. exustus Wak. % and 9.—Thoracis dorso eneo-nigro opaco, abdomine cupreo, latera versus viridi, nitidissimo, halteribus nigris, alis nigricantibus adversus costam nigris, lamellis analibus maris albis, in basi nigris, apicem versus flavis, in summo apice puncto nigro notatis. The upper side of the thorax bronze-black, opaque; the abdomen copper- colored, laterally green, very bright; halteres black; wings blackish, towards the fore margin entirely black ; the anal appendages of the male are white, near the root black, towards the tip yellow, at the extreme tip with a black spot. Long. corp. 0,22. Long. al. 0.26. SCELLUS. bo o a] Syn. Medeterus exusius WALKER, Dipt. Saund. 211. Scellus exustus Lorw, Neue Beitr. VIII, 71, 1. Male. Black. The face rather narrow, opaque from a bright ochre-yellow dust. Antenne black. Front covered with white dust. The middle of the upper side of the thorax is, at least in my specimen, black, opaque, and exhibits some traces of gray dust; towards the lateral margin it is more bright and shows a less distinct coppery reflection ; on the lateral margin itself there is a broad longitudinal stripe covered with white dust. Scutellum with two bristles, opaque upon the middle, with a thin, almost im- perceptible coat of white dust, bright on the sides. Pleure bronze-black, on the upper half with a dusky copper-colored reflec- tion, on the lower half with a thin gray-whitish dust. Abdomen brilliant coppery-red, in a certain light it appears brass-colored upon the posterior segments, in an oblique direction even green ; its first segment almost reddish-violet. The upper appendages, peculiar to the males of Scellus, are of a very considerable length, white, near the root black, somewhat enlarged at the tip, curved towards each other and of a yellow color, at the extreme tip black and provided with a tuft of pale hairs, which are turned back- wards. Coxe black, with a thin white-grayish dust, the foremost with extremely short pale hairs, with a few stiff black little hairs and near the tip with a few black bristles. Feet black, the femora more metallic green-black, with coppery reflections; the fore femora but short, very much thickened, toward the basis on the whole under side beset with bristles of different length, on the an- terior side with a row of stiff black bristles ; middle femora elon. gated, thin, gently curved, on the under side almost entirely bare ; the hind femora near the basis of the under side are enlarged into a large blunt appendage, beset with large black spines, beyond this appendage there is an arch-like excision; then again they are stouter and beset on the under side with black bristles. The fore tibiz, which are comparatively stout, bear on the front side, not far from the basis, a stout black thorn, their tip is elongated into a coarse tooth and their under side, which is beset with black bristles, has somewhat before this tooth a small excision ; middle tibie long and rather slender ; their first half has only three short bristles; the second is fringed on the front side with a row of short black bristles ; upon the posterior side somewhat beyond the 204 DIPTERA OF NORTH AMERICA. [PART Il. middle, there are a few long black bristles, and between these and the tip of the tibia, some long, curly black hairs. The hind tibiz are much stronger than the middle tibiz, their first half is stouter than the second and the front side before the tip is armed with a strong black bristle. 'Tarsi plain, their joints of decreasing length, the first joint of the middle tarsi with a few bristles. Halteres brownish-black. Wings blackish, all their veins broadly margined with black ; the margins of the costa and of the first four longitu- dinal veins are entirely confluent, so that the anterior part of the wings appears altogether black ; upon the middle of the posterior transverse vein and upon the curve of the last segment of the fourth longitudinal vein there is a black spot; the costal cell is of a dark brown color. Female. The only female which I possess, is not as well pre- served as the described male, especially the characters of the face cannot be recognized with certainty ; I would therefore recall the circumstance, that the face of most of the females of Scellus is less yellow than in the males. The first joint of the antenne in the female is considerably shorter than that of the male. Fore femora and fore tibiz less stout, though the tip of the latter has also a dentiform, but less stout elongation; their under side has no excision before this tooth and the front side of the tibiz no thorn. Middle femora not curved, on the larger half of their under side with a few sparse bristles. Middle tibiz plain, upon the first half with a considerable number of black bristles, upon the latter part of the posterior side without the curly hairs which are found in the male. Hind femora plain, slender, towards the tip but very little stronger, upon the second part of the under side with about six rather strong black bristles. Hind tibize without the strong bristle which, in the males, exists at the tip of the front side. Hab. Middle States. (Osten-Sacken); Illinois. (Le Baron.) 2. 8. spimimanmus Zerr. % and 9.—Thoracis dorso obscure neo, albido-pollinoso, opaco, abdomine ex viridi cupreo, nitido, halteribus subfuscis, alis nigris, basi et costz dimidie limbo subalbidis, margine postico toto cinereo, lamellis analibus maris albis, basim versus infra nigro-marginatis, apicem versus flavis, in summo apice puncto fusco notatis. The upper side of the thorax dusky bronze-colored, with whitish dust; SCELLUS. 205 abdomen coppery-green, bright ; halteres brownish ; wings black, though the root and the margin of half the costa is whitish, the whole posterior margin gray; anal appendages of the male white, towards the basis on the under side with a black margin, towards the tip yellow, at the ex- treme tip marked with a brown spot. Long. corp. 0.15. Long. al. 0.19. Syn. Hydrophorus notatus ZerrerstEDt, Ins. Lapp. 701, 4, in obs. Hydrophorus spinimanus ZErrEeRstED?T, Dipt. Scand. II, 445, 5. Male. Blackish bronze-colored. The face is comparatively a little broader than in S. exustus, covered with bright ochre-yellow dust and opaque. Antenne black. Front with whitish dust. The ground-color of the thorax is of a coppery-bronze ; upon the middle of the upper side more of a blackish-bronze, but almost everywhere so thickly covered with dust that the coppery lustre is only very little perceptible ; the dust on the upper side of the thorax is snow-white, upon the two longitudinal stripes near the lateral margin it is less thick, so that the coppery reflection of the ground-color is more distinct ; upon the middle there are two nar- row, dark longitudinal lines, close to each other, which do not reach as far as the posterior margin of the thorax. Upon the pleure the color of the dust is more yellowish. The scutellum has two bristles, is rather opaque, with a thin whitish dust. Abdo- men green, mostly with a coppery lustre, which becomes much more bright near the lateral margin. The anal appendages are of middling length, white, near the basis on the lower margin with a narrow black border, and on the upper margin usually marked with a blackish spot; beyond the middle they are inflected up- wards and gradually assume a yellow color; their extreme tip is marked with a small brown spot and bears a small tuft of delicate pale hairs, which are turned backwards ; about the middle of the interior margin there is a similar pubescence; between them, towards the anal region, there is a small tuft of delicate whitish hairs. Coxe bronze-black ; the four anterior with yellow and the two hind ones with a rather whitish dust ; the fore coxe with very short and delicate pale hairs, near and upon the tip with a few black bristles. Feet black, femora and tibize more black-green, the former bright coppery. Fore femora short, towards the basis very much thickened, beset on the under side with bristles of dif- ferent length, on the front side with a row of stiff black bristles. Middle femora long, stronger than in S. exuwstus and more curved, on the latter half of the under side with erect black bristles. Hind 206 DIPTERA OF NORTH AMERICA. [PART IL, femora of a plain structure, not stouter than the middle femora ; their under side has only close before the tip, a few black bristles. The comparatively stout fore tibia have on their front side, not far from their basis, a stout black thorn ; their tip is elongated into a very stout tooth, before which the under side of the tibie, which is beset with strong bristles, has a small excision. Middle tibia not quite so long and slender as those of S. exustus, on the upper side only with three or four short bristles, on the under side with a row of extremely long, straight, erect black bristles, and on the hind side with long curved hairs, which latter are more dense near the tip and curl up to the shape of a lock of hair. Hind tibiz plain, scarcely stouter than the middle tibiz ; on their upper side, not far from the basis, there is a strong bristle, and on the latter half a few small bristles; the under side is beset with short small bristles, which are isolated upon the first part and closer together and in more regular order upon the second half; at the end of the under side there is a considerable number of less strong and less short bristles, of which the last is distinguished by its greater length; on the outside of the tip of the tibix there are several short and one longer and curved bristle, which has almost the thickness of a thorn. Tarsi plain, the joints of decreasing length, the first joint of the fore and of the middle tarsi with more, that of the hind tarsi with less bristles. Halteres yellowish-brown, the lower part of the knob more dark. The wings of uniform breadih and at the end more rounded than in the other species; an un- commonly large black spot covers their apical half with the excep- tion of a broad gray border on the posterior margin, and extends as a broad cloud along the fifth longitudinal vein almost as far as the anal cell; inside of the discoidal cell it is somewhat paler, otherwise, however, so dark that the two black spots, peculiar to this genus, upon the posterior transverse vein and upon the last segment of the fourth longitudinal vein, can only be perceived when, the wing is held towards the light; the anterior part of the wing from the basis as far as the middle is dingy-whitish hyaline ; the anal angle and a broad border along the posterior margin are more hyaline-gray. Hab. Fort Resolution, Hudson’s Bay Territory. (Kennicott.) Female. It is distinguished from the male by the following characters: Face with pale yellow-grayish, front with brown dust. The middle of the upper side of the thorax with yellow-brownish SCELLUS. 207 dust, marked with a few spots of whitish dust. Its lateral stripes are covered with brown, the edge of the lateral margin, however, again with gray-whitish dust. The abdomen is more green, less coppery and less bright than in the male. The dust upon the pleuree and upon the fore coxe is less yellow. The fore femora are of a similar structure as those of the male ; the fore tibie with- out a thorn on the inside, elongated at the tip in a much smaller and sharper tooth, before which there is no excision; otherwise the feet are plain, the middle and hind femora straight and much more slender than in the male ; middle and hind tibiz only sparely beset with scattered bristles. Observation.—As I do not possess a North American female of S. spinipes, I have prepared the above description from Swedish specimens. 3. S.avidus, nov. sp. %.—Thoracis dorso eneo-nigro, nitido, mar- gine et lined media cinereo-pollinosis, pleurarum plagd supera, abdo- mineque ex viridi lete cupreis, nitidissimis, halteribus albis, alis cine- reis, punctis duobus nigris, altero in vena transyersd posteriore, altero in ultimo vene longitudinalis quartz segmento; lamellis analibus maris albis, basi et apice tamen nigris. Upper side of the thorax bronze-black, shining, its margin and a middle line dusted with gray powder; a large spot on the upper part of tlie pleure and the abdomen bright greenish copper-colored, very shining ; halteres white; wings gray with two large dots, one on the posterior transverse vein, the other upon the last segment of the fourth longitu- dinal vein; the anal appendages of the male are white, but their basis and tip are black. Long. corp. 0.17. Long. al. 0.21. Male. Face somewhat broader than in the previous two spe- cies, dusted with bright ochre-yellow powder, opaque. Front with white dust. Antenne black. Most of the upper side of the thorax bright bronze-black with faint violet reflections; its whole margin has a rather broad border dusted with a whitish-gray pow- der, and therefore opaque; there is also a narrow middle line, which is much abbreviated behind and likewise dusted with a white-grayish powder. The upper part of the pleure, from the shoulder to the root of the wings, is entirely without dust, metallic greenish copper-colored, very much shining ; as I have only a sin- gle specimen, I am unable to judge with certainty whether this large shining spot is also present in fresh specimens, as I believe it to be, or whether in the above described specimen it is merely 208 DIPTERA OF NORTH AMERICA. [PART II. rubbed off; the other parts of the pleura are dusted with gray. The scutellum, which has two bristles, is greenish bronze-colored and opaque. The very shining abdomen is of a bright coppery color, but assumes, when its surface is looked upon in a very ob- lique direction, a green or at least brassy-yellow color. The tape- like anal appendages are very long, somewhat blackened at the basis, and still more so at the tip which is turned upwards, and there beset with a small tuft of blackish hair directed backwards ; otherwise their margins are not hairy, although there is a single black bristle where the blackening of the tip begins on the under side in the vicinity of its inner margin. Near the anus between the above mentioned two appendages there are a few small black hairs. Coxe greenish-black, with white-yellowish dust ; the fore-_ most have besides some pale hairs, almost imperceptible on account of their shortness and delicacy, a few black bristles before and upon the tip. Feet black with a metallic-green reflection, which gra- dually disappears upon the last joints of the tarsi. Fore femora towards their root not so much thickened as in the two preceding species, beset with ‘strong black bristles of different length on the under side, on the front side with a sparse row of short black bris- tles. Middle and hind. femora long, slender, straight, of a plain structure, beset on the second half with a moderate number of short, scattered black bristles. The moderately stout fore tibiz bear on their anterior side, not far from the basis, a short black thorn and are prolonged at their tip into a large, somewhat clumsy but sharp tooth, before which the under side of the tibia, provided with bristles, has a very small excision. The middle tibizw are long and slender ; on the upper side they are beset with only three, on the anterior side with about seven scattered bristles of very moderate length; on the other half of their hind side they bear long curly black hairs. Hind tibiz slender, straight, rather long, only on the second half with a few isolated black bristles; the bristles on the outside of their tip are also only short. Tarsi plain, their joints of decreasing length; the first joint of the fore and middle tarsi on the under side with numerous black bristles, the first joint of the hind tarsi only with a few and much shorter bristles. Wings hyaline-gray, somewhat darker towards the tip on account of the gray margin of the second, third and fourth longitudinal veins ; upon the posterior transverse vein and upon SCELLUS. 209 the middle of the last segment of the fourth longitudinal vein there is a gray-blackish spot of considerable size. Hab. Fort Resolution, Hudson’s Bay Territory. (Kennicott.) 4. S. filifer, nov. sp. %.—Thoracis dorso cinereo, opaco, abdomine cupreo, cinereo-pollinoso, subopaco, halteribus albidis, alis hyalinis in basi subalbidis, apicem versus cinereo-striatis punctisque duobus 1ma- jusculis nigricantibus, altero didymo in vena transversd posteriore, altero simplici in ultimo vene longitudinalis quartz segmento ; lamellis analibus maris angustissimis albis, in basi nigris, in summo apice fla- vicantibus. Upper side of the thorax gray, opaque ; abdomen copper-colored with gray- ish dust, rather opaque; halteres whitish ; wings hyaline, whitish near the root, with gray stripes towards the tip; upon the posterior transverse vein with a double blackish spot of considerable size, and with a simi- lar, but single spot upon the last segment of the fourth longitudinal vein ; the anal appendages of the male are very narrow, white, black at the basis and yellowish at the extreme tip. Long. corp. 0.15. Long. al. 0.20. The narrow face is ochre-yellow. Antenne black. Front with white dust. Thorax blackish bronze-colored with copper-colored reflections; on the upper side with thick whitish dust, which almost conceals the ground-color, opaque ; upon the pleurz with a somewhat thinner dust of the same color. Upon the middle of the upper side there are two narrow parallel lines of a darker color, which do not reach as far as the posterior margin of the thorax. The scutellum, which has two bristles, is of the same color as the pleure. The ground-color of the abdomen is like that of the thorax, is, however, more distinct, not being so thickly covered with dust; towards the lateral margin of the abdomen, where the dust almost entirely disappears, there is a bright cop- per-colored lustre. The anal appendages of the male, which are turned upwards at their tip, are not ribbon-like, as in the pre- viously described three species, but filiform, white, black at the root, at the tip pale-yellowish to a small extent; on the middle of their exterior margin there is a dense beard of delicate little white hairs; there is no tuft of hairs at their tip. Between them, in the anal region, only a moderate number of short delicate little hairs, which may be easily overlooked, are inserted. Coxe of a black- ish-bronze color with whitish dust; the fore coxz have, besides 14 210 DIPTERA OF NORTH AMERICA. [PART II. the pale, and, on account of its shortness and delicacy, almost im- perceptible pubescence, quite a number of black bristles. Feet black, the femora with a more coppery, the tibiz with a more metallic-greenish tinge. Fore femora rather strongly thickened towards the basis, on the under side with strong black bristles of different length, on the front side only with an imperfect row of short black bristles. Middle femora moderately thickened and strongly curved, on the under side of the basis with two or three not very long, on the apical half with a large number of long, straight and erect bristle-like black hairs. Hind femora plain, of middling stoutness, on the under side with bristle-like short hairs ; on the upper side with two longer black bristles, of which the larger is not far from its tip. Fore tibie strong, with a large and sharp thorn on the front side, not far from the basis ; elongated at the tip into a large clumsy tooth; the under side of the tibia, pro- vided with bristles, has no distimet excision before this tooth. Middle tibia long, straight, a little stronger in the neighborhood of the basis; the first two thirds of their under and posterior side are fringed with long curly black hairs, the end of the under and front side, however, with long and stiff black bristles ; on the under side, where these bristles begin, there is between them a somewhat curved black thorn. Hind tibie straight, on the under side with short but very strong black bristles, one of which, being not far from the tip, is remarkable for its greater length; on the outside of the tip of the tibiae afew shorter and one somewhat longer curved bristle are inserted. Tarsi plain, their joints of decreasing length; the first joint of the fore and middle tarsi on the under side with black bristles, which are of considerable length near the basis of the tarsi, but decrease in length very rapidly so as to be very short on the larger portion of the joint; the under side of the first joint of the hind tarsi is everywhere beset with short black bristles. Halteres pale-yellowish, but the basis of the knob some- what brownish. Wings hyaline; almost the whole basal third appears somewhat whitish when seen in a certain direction ; gray- ish stripes along the second half of the second and third longitu- dinal veins, likewise along the tip of the last segment of the fourth and the greater portion of the fifth longitudinal vein; there is also a gray streak between the third and fourth longitudinal veins ; npon the posterior transverse vein there is a blackish-gray double spot, and upon the middle of the last segment of the fourth long!- HYDROPHORUS. 211 tudinal vein there is a larger rounded blackish-gray spot, which is less sharply defined on the side turned towards the tip of the wing. Hab. Fort Resolution, Hudson’s Bay Territory. (Kennicott.) Gen. XXXVI. HYDROPHORUS. Characters. The first joint of the antenne short, bare; the second very short; the third rounded, more or less distinctly notched under its tip ; arista dorsal, two-jointed, apparently bare. Front a little excavated on the vertex, narrower anteriorly. Eyes large, higher than broad, encased below in the cheeks, which in their structure resemble those of Orthochile, and are broader than in the other genera. The face reaches somewhat below the lower corner of the eyes ; it is scarcely narrower in the male than in the female, its two upper thirds are usually a little concave ; the lowest third is separated from the upper one by two knotlike elevations near the eyes, is convex and ends in a sharp rounded edge. Pro- boscis of moderate thickness; palpi incumbent, in both sexes rather small. Upper side of the thorax only with moderately Jong hairs upon its middle. Scutellum rather flat, though some- what elevated along its middle line, in all species known to me with four bristles. Abdomen broad and rather flat, very short, without bristles ; it has five segments in both sexes: The hypopy- gium of the male is small and imbedded; at its lower end there are two small, dark-colored lamelle, obliquely turned down, and so closely approximated that they seem to form but one clumsy dentiform protuberance ; usually no other appendages are seen besides these. Feet generally bare; middle and hind feet much Jonger and more slender than the fore feet; fore femora gradually rather thickened towards the root; on their under side, either in both sexes or at least in the male, with short, thornlike bristles ; sometimes they are beset with a few longer and thornlike bristles; fore tibia on the under side densely beset with very short thorn- like bristles ; middle tibize never beset with longer hairs, even in the male ; tarsi plain, their joints very much decreasing in length; the empodium very distinct. Wings long and narrow; the pos- terior transverse vein close to the margin of the wing; the third and fourth longitudinal veins usually somewhat converging towards their ends; in some species they are parallel; the sixth longitudi- nal vein usually apparent as far as the middle of its course. 212 DIPTERA OF NORTH AMERICA. [PART IL Hydrophorus differs from Scellus by the fore femora and fore tibia not being provided on the under side with long thorns, catching between each other, by the tip of the fore tibie not being elongated into a clumsy projection, by the middle tibize of the male not being adorned with long hair, by the hypopygium not having those peculiar pale-colored appendages, which distinguish the species of Scellus, &c. Liancalus has no notches on the third joint of the antenne, its fore femora are not thickened and un- armed, and it has bristles before the incisures of the abdomen, so that no mistake can occur between the species of Hydrophorus and Liancalus. The name of Hydrophorus (from top, water, and gépew, to carry) has been bestowed upon these insects with reférence to the ability of many of the species to run even upon agitated waters. The species of Hydrophorus known to me are distributed over Hurope, Northern Asia, Africa and North America. There is no perceptible habitual difference between the species from the dif- ferent parts of the globe. Table for the determination of the Species. ' Face with white dust, shining green above. 1 innotatus, nov. sp. Face with brownish-yellow dust, opaque above. 2 2 | Third and fourth longitudinal veins convergent. 2 pirata Lw. Third and fourth longitudinal veins parallel. 3 parvus Lw. Description ef the Species. i. H. immotatus, nov. sp. % and 9.—Olivaceo-eneus, scutello virescente, abdomine viridi, femoribus tibiisque viridibus, tarsis nigris, facie supra viridi-splendente, polline pleurarum albido, venis alarum cinerascentium atris, longitudinalibus tertid et quarté apicem versus paulo convergentibus. Metallic olive-brown with greenish scutellum and green abdomen ; femora and tibie green; tarsi black; face shining green above; pleurz with whitish dust; wings gray with black veins; the third and fourth longi- tudinal veins somewhat converging towards their end. Long. corp. 0.13. Long. al. 0.22. The dust upon the face is yellow-brownish immediately below the antenne ; otherwise everywhere white in the male, but so thin upon the entire upper part of the face that its metallic-green color becomes distinctly perceptible ; in the female the face is covered with white dust only along the sides, upon the middle with HYDROPHORUS. 213 brownish dust. Antenne entirely black. Front greenish-black, opaque ; seen in an oblique direction the covering of brown dust upon it becomes perceptible, which otherwise is visible only on the anterior margin. The ground-color of the occiput is green and but little covered with brownish-gray dust. The cilia of the upper orbit are, as usual, black, the dense and hair-like cilia on the late- ral and inferior orbits, however, rusty-yellowish. The upper side of the thorax metallic olive-brown; the hindmost part with a metallic-ereen reflection; the dust upon it is brown. Scutellum with four bristles, shinitlg, rather green, though somewhat copper- colored upon its middle. Pleure and coxe with whitish dust. Abdomen metallic-green, shining, especially on the sides; the short hair upon it is blackish, upon the sides of the first segment, however, fallow-yellowish. Fore cox on their front side with a very short and delicate whitish pubescence, beset on the upper half of their exterior side with a moderate number of compara- tively long black bristles; a few of them are also at the tip. Femora slender, green, with an almost imperceptible grayish dust ; the fore femora as usual thickened towards their basis, and beset on the under side near the basis with four or five rather long thornlike bristles; besides these there is, nearer to the anterior margin, an apparently incomplete row of very short bristle-like little hairs, which are but difficult to perceive. Tibi dark green, the foremost on their under side uniformly fringed with very short, black thornlike bristles. Tarsi black. Cilia of the tegule yel- low. Halteres with a dusky yellow peduncle and with blackened knob. Wings very long, tinged with gray, not darker towards the anterior margin and with veins which are black up to the ex- treme root; the end of the third longitudinal vein is somewhat curved backwards so as to converge distinctly towards the fourth longitudinal vein; no dark spot is to be seen neither upon the fourth longitudinal vein, nor upon the convexity, crossed by the last segment of the fourth longitudinal vein. Hab. Sitka. (Sahlberg.) Observation.—Notwithstanding the not unimportant difference in the coloring of the dust on the lower part of the face between the two sexes described above, I have no doubt that both belong together. From the other North American species, known to me, H. innotatus differs by the shining green color of the upper part of the face. Among the European species it can only be 214 DIPTERA OF NORTH AMERICA. [PART IL. compared to ballicus Meig., alpinus Wahlb. and callostomus Lw. It can easily be distinguished from balticus by the dark knob of the halteres; from alpinus by the want of a curved thorn at the end of the fore tibie ; from callostomus by its more con- siderable size and a comparatively narrower face. 2. H. pirata Lorw. 9.—Olivaceo-eneus, thorace et scutello cupreo- splendentibus, abdomine virescente, femoribus tibiisque viridibus, tarsis nigris, polline faciei opace ex fusco ochraceo, pleurarum polline albido, venis alarum cinerascentium nigris, longitudinalibus tertia et quarta apicem versus paulo convergentibus. Metallic olive-brown, thorax and scutellum with a copper-colored reflex- ion; abdomen greenish; femora and tibie green; tarsi black; the dust upon the opaque face brownish ochre-yellow ; that of the pleure whitish ; wings gray with black veins, the third and fourth longitudinal veins somewhat converging towards their ends. Long. corp. 0.15. Long. al. 0.24—0.26. Syx. Hydrophorus pirata Loew, Neue Beitr. VIII, 71, 1. Face with brownish-yellow dust, entirely opaque. Palpi black and covered with black hairs, on the upper side with brownish- yellow dust. Antenne entirely black. Front brownish-black, opaque; when seen in an oblique direction, it seems as if partially covered with brownish-yellow dust. On the occiput the ground- color is green, however almost entirely covered with grayish- yellow dust, or rendered very opaque. The cilia of the upper orbit are, as usual, black, the dense and hair-like cilia of the lateral and inferior orbits however, yellow. The upper side of the thorax is metallic olive-brown with a copper-colored reflection ; the scarcely perceptible dust upon it is brownish-yellow. Scutel- lum with four bristles, shining, copper-colored upon the middle, on the margin green. Pleure and cox with whitish dust. Ab- domen more green than the thorax and with a coppery tinge, upon the greater portion of the last segment and upon the posterior margin of the preceding segments usually beautifully green; its short hair is blackish, only upon the posterior margin of the first and of the last segment it is pale. Fore coxe on their front side with a very short and delicate whitish pubescence, on their ex- terior margin fringed with black, stiff, but not very strong, bris- tles, of which there are also a few on the tip. Femora slender, green, and covered with thin, almost imperceptible, whitish dust ; HYDROPHORUS. 215 the fore femora as usual, thickened towards the basis, on their under side with two rows of thorn-like bristles, the inner row of which reaches as far as their tip, while the exterior one stops already on the middle of the femora. Tibiz dark-green, the fore- most uniformly fringed, upon their under side, with very short thorn-like bristles. Tarsi black. Cilia of the tegule fallowish- yellow. Halteres with a dusky-yellowish peduncle, and with blackened knob. Wings very long, tinged with gray, not darker towards the anterior margin, with black veins up to the extreme root; the end of the third longitudinal vein somewhat approaches the fourth, so that these veins converge distinctly towards their ends ; upon the posterior transverse vein and upon the convexity, which the last segment of the fourth longitudinal veins crosses, there is a somewhat more gray spot, which is almost invisible to the naked eye. Hab. Pennsylvania, District of Columbia. (Osten-Sacken. ) Observation.—lt is difficult to determine, whether H. pirata is not one of those four species of Hydrophorus which Mr. Walker has described as species of Medeterus. They agree in a good many respects not only among themselves, but also with HH. pzrata, while each of them exhibits also some distinguishing feature. 7. viridiflos must be much more green, according to Mr. Walker’s statements, than H. pirata; besides, the cilia of the inferior orbit of the former one are white, while those of the latter are yellow; moreover, its abdomen is conical and longer than the thorax, an entirely uncommon character for a female of Hydrophorus, and making it almost doubtful whether it really belongs to this genus ; finally the veins of the wings are said to be brownish-yellow near the root of the wing; these discrepancies are altogether too great to justify the supposition that H. pirata can be identical with viridiflos Walker. The face of Walker’s female of H. glaber is said to be covered with golden-yellow dust, the abdomen on the upper side clothed with brownish-yellow hairs, the femora rather stout and the halteres brownish-yellow. These differences are likewise too important to admit the identity of A. pirata with //. glaber. The face of Walker’s female of H. chrysologus is said to be also covered with golden-yellow dust; the wings are said to be brown along the anterior margin, and to measure only three lines in expanse, whereas they measure six lines in H. pirata. Under such circumstances the identity of these species is out of question. 216 DIPTERA OF NORTH AMERICA. [PART IT. In Walker’s description of H. alboflorens, the brownish-yellow color of the dust upon the face, the color of the halteres and the black color of the hair on the upper side of the abdomen, agree better with H. pirata; but it is added, that the thorax is covered with brownish-yellow dust, that the dust upon the femora is of the same color, and finally that the pulvilli are of a pale-yellowish color, of all which there is no trace in H. pirata. 3. H. parvus Lorw. %.—Olivaceo-zneus, thorace et scutello cupreo resplendentibus, abdomine obscure virescente, femoribus tibiisque viridi- bus, tarsis nigris, polline faciei opacz ex fusco ochraceo, pleurarum polline albido, venis alarum ex nigro cinerascentium nigris, longitudinalibus tertia et quarté perfecte parallelis. Metallic olive-brown, thorax and scutellum with a copper-colored re- flection; abdomen dark-green, femora and tibiew green, tarsi black, the dust upon the entirely opaque face brownish ochre-yellow, that on the pleure whitish; the wings blackish-gray with black veins, the third and fourth longitudinal veins entirely parallel. Long. corp. 0.09—0.10. Long. al. 0.13. Syn. Hydrophorus parvus LoEw, Berl. Entom. Zeitschr. VI, 214, 67. Resembles in the structure of the body H. pirata very much, but sufficiently distinct from it by its smaller size, a more blackish color of the wings and the complete parallel course of the third and fourth longitudinal veins. Face with brownish ochre-yellow dust, entirely opaque, very much narrower upwards. Palpi black, antenne also black. Front almost velvet-black, with yellow- brownish dust, which is not distinctly perceptible in every direc- tion. Ground-color of the occiput green, covered above with yellowish, below and on the lateral margin with whitish dust. Cilia of the upper orbit black, of the inferior one white. Upper side of the thorax metallic olive-brown with almost violet and coppery reflections, the latter of which form two indistinct longitu- dinal lines and are more extended near the posterior margin of the thorax.. Scutellum shining copper-colored, with four bristles, the lateral bristles much shorter than those which are nearer to the tip. The abdomen is green, rather opaque, upon the middle somewhat coppery, on the lateral margin and on the under side distinctly covered with white dust ; the very short hair upon it is black. Coxe, femora and tibie black-green. The fore cox are fringed on their front side with very delicate whitish hair Looe ag Seen eee ae A ACHALCUS. Oy which, on account of its shortness, is difligult to perceive; on their exterior side some short white little hairs are also inserted ; one of the uppermost, however, is sometimes of a black color. The fore femora, which are moderately thickened towards the root, have, on their under side, a dense row of very short, straight, erect little bristles, and near the basis two or three longer bristles. The under side of the fore tibiz is also provided with a dense row of very short small bristles. Tarsi, black. The halteres appear to be black. Wings long, tinged with a gray-blackish color, not darker towards the anterior margin, and up to the ex- treme root with black veins; the end of the fourth longitudinal vein is completely parallel to the third; the posterior transverse vein is perpendicular, without dark margin and dark spot upon its middle; the convexity crossed by the last segment of the fourth longitudinal vein is not darker than its surroundings. Hab. PennsyWania. Gen. XXXVUI. ACHALCUS. Characters. Color non-metallic. The first joint of the an- tenn glabrous, the third pointed-ovate; the long and* slender arista subapical. Face narrow. Abdomen with six segments in both sexes; the female abdomen at the end without a coronet of bristles. Hypopygium small; its exterior appendages have the shape of small lamelle. The first joint of the hind tarsi without bristles, shorter than the second. The sixth longitudinal vein of the wings is wanting. It is impossible to overlook the relationship of the genus Achalcus with the four following genera, which are distinguished by the posterior end of the thoracic dorsum being provided with a concave area. This relationship is also illustrated by the want of the coronet of bristles on the posterior end of the female abdomen, which Achaleus has in common with these four genera. I have only a few speci- mens of Achaleus flavicollis in my possession; the manner in .which they are pinned renders it impossible to ascertain whether the posterior end of the upper side of the thorax has a concave surface or not ; it seems to me that the latter is the case. The name of the genus (from a, non, and yaaxds, brass) has refer- ence to the non-metallic color of the species. 218 DIPTERA OF NORTH AMERICA. [PART II. The few species of, Achalcus as yet known, belong all to the European fzuna. Gen. XXXIX. MEDETERUWUS. Characters. Face of both sexes rather broad, and in both with a transverse swelling kelow its middle. The proboscis very much swollen; when in repose, both sides of its opening are so close together, that its lower surface forms but a single convexity. The first joint of the antenne glabrous, the third rounded or somewhat ovate, with a slender apical or subapical arista. Eyes not hairy. The upper side of the thorax on its posterior end with a concave declivity. The hypopygium with a short peduncle, entirely dis- engaged, inflected under the venter, with rather short appendages. Feet rather long and slender, almost entirely without bristles ; the first joint of the hind tarsi without bristles, shorter than the second. The third longitudinal vein, in most of these species, ends not far from the tip of the wing, and the last segment of the fourth longi- tudinal vein converges towards the third. The genus consists of two groups; the first of these differs from the second by the shorter distance of the posterior transverse vein from the margin of the wing, by a stronger convergency of the third and fourth longitudinal veins, by the smaller length of the first joint of the hind tarsi and a more slender structure of the body. The name of Medelerus (from p7dSérepos, neither of the two) was given to this genus, because its species could not be located in any of the two genera of Dolichopodide, established at that time. The known species belong to Europe, Northern Asia, North- ern Africa, and North America. Of the latter I possess un- fortunately only fragments of specimens, so that my statements about them will necessarily be very imperfect.» 1. M. migripes Lorw. 9.—WNigricans, antennis pedibusque concolori- bus, thoracis dimidio anteriore albido-bivittato, dimidio posteriore et scutello albido-pollinosis, alis subhyalinis. Blackish, antenne and feet of the same color, the anterior part of the thorax with two whitish stripes, the posterior half and the scutellum covered with whitish dust, wings rather hyaline. Long. corp. 0.12. Long. al. 0.12. Syn. Medeterus nigripes Loew, Neue Beitr. VIII, 73, 1. MEDETERUS. 219 Blackish, without metallic lustre. Face opaque from brown dust; its ground-color seems to be ereenish-black, below the trans- verse swelling, above it of a purer black. Palpi and proboscis shining black. Antenne black. Front opaque from brown dust. The cilia of the inferior orbit pale. The anterior half of the upper side of the thorax is brown with dust and has two distinct, yellow- ish-white Jongitudinal stripes, which reach from the anterior mar- gin as far as the impression upon the posterior half; this impres- sion and the scutellum are covered with erayish-white dust. The upper part of the pleurs is covered With brownish- gray dust; the bristles above the fore cox are black. Abdomen black milena any distinct trace of dust. Coxe and feet black ; fore cox very glabrous, only with a few black bristles near the tip; the extreme tip of the knees dark pitch-brown (which might be easily over- looked). The second joint of the hind tarsi is three times the length of the first one. Cilia of the tegule whitish. Halteres whitish with a darker peduncle. Wings hyaline, scarcely a little tinged with gray, with dark-brown veins; the posterior transverse vein distant from the margin of the wing somewhat more than its own length ; the third longitudinal vein ends close before the tip of the wing; the last segment of the fourth longitudinal vein is uncom- monly straight and its end lies close to the end of the third longi- tudinal vein. Hab. Middle States. (Osten-Sacken.) 2. M. weles Loew. 4,.—Nigricans, antennis concoloribus, facie opaca, pedibus testaceis, femorum dimidio basali ex nigro piceo, alis subhyalinis, maris hypopygio atro, nitido, ovato, subsessili. Blackish, antenne of the same color; face opaque; feet yellowish, basal half of the femora brownish-black; wings rather hyaline, hypopygium black, ovate, almost sessile. Long. corp. 0.11. Long. al. 0.11. Syn. Medeterus veles Lonw, Neue Beitr. VIII, 73, 2. Blackish, without metallic lustre. Face opaque from brownish- eray dust ; its ground-color is black, more distinct upon the part below the transverse swelling, the dust there having been rubbed off. Palpiand proboscis black, shining. Antenne black. Front opaque from brown-gray dust. The upper side of the thorax is marked in a similar manner as in the preceding species, but the dust on the anterior half is more gray and that on the posterior half and on the scutellum, at least in the described specimen, less 220 DIPTERA OF NORTH AMERICA. [PART II, ” striking. The upper part of the pleure is covered with gray dust and the bristles above the fore coxee are of a pale color. The abdomen is less thickly dusted than the thorax, appears however rather gray in some directions on account of its cover of dust. The peduncle of the hypopygium is so short as to appear ses- sile; it is rather stout, ovate, almost reversed-pyriform, black, polished on its entire right side and on the latter half ef the left side. Coxe black. Feet brownish-yellow, all femora, from the root as far as the middle, pitgh-black, this color vanishing gradu- ally. Cilia of the tegule whitish ; halteres whitish with a darker ‘ peduncle. Wings hyaline, scarcely tinged with a little gray, veins brownish; the posterior transverse vein distant from the margin of the wing more than its own length. The third longi- tudinal vein ends a little farther from the tip of the wing than in the preceding species; the last segment of the fourth longi- tudinal vein is also very straight, converges, however, less towards the third longitudinal vein than in IL. nigripes. Hab. Florida. (Osten-Sacken. ) Observation. I have received from Mr. Le Baron two females, captured in Illinois. They are somewhat larger than the above described male, and the lower part of the face is greenish-blue, but very little shining. Otherwise they agree with it perfectly. The different color of the lower part of the face would be a sufficient specific distinction, if the bad condition of the above described male of JZ veles did not admit the supposition that the difference in its color is an unnatural one. I prefer therefore not to consider these females as belonging to a different species. Gen. XL. CHRYSOTIMUS. Characters. Size of the body small. Antenne small; their first joint glabrous; the third joint very short, usually broader than long, distinctly hairy, with an apical or almost apical arista. Eyes with a very short pubescence. The posterior end of the thorax with a rather large, distinctly concave, sloping area. The bristles upon thorax and seutellum yellow. Abdomen in all the species partially yellow. Feet not elongated; the first joint of the hind tarsi without bristles. Posterior transverse vein upon, or more or less before, the middle of the wing; the last segment of the fourth longitudinal vein neither broken nor distinctly bent . CHRYSOTIMUS. 291 forward, parallel to the third vein and ending into, or somewhat beyond, the tip of the wing. Hypopygium small and imbedded. The species of Chrysolimus were formerly united with the species of Chrysotus. The principal difference between these genera consists in the structure of the thoracic dorsum. Chry- sotus has immediately before the scutellum a small, more or less distinct, transverse swelling, which is separated from the rest of the surface by a rounded impression, and the convexity of the thorax begins here. In Chrysotimus this transverse swelling is entirely wanting, and the thorax shows in the middle of its hind- most part a rather conspicuous, distinctly concave surface, slop- ing towards its posterior margin. Moreover in Chrysotimus the feet are much less hairy, the wings comparatively a little larger, the appendages of the hypopygium more concealed, the integu- ments of the whole body softer, the bristles upon thorax and scu- tellum not black, but yellow, and the abdomen always, at least partially, of a yellow color, which is not the case with any of the genuine species of Chrysotus. The name of the genus (from ypvoos gold, and riz, honor) re- minds us of the coloring of the species, as well as of their former connection with the genus Chrysolus. Besides the two North American species, described below, only European species are known. 1. C. pusio Lorw. %.—Lete viridis, abdominis flavi segmento ultimo viridi, antennis palpisque nigris. Bright green; abdomen yellow, the last segment green; antenne and palpi black. Long. corp. 0.07. Long. al. 0,09. Syx. Chrysotimus pusio Lozw, Neue Beitr. VIII, 74, 1. Face dark-green with a thin white-grayish dust. Palpi brown- ish-black, appearing rather pale on account of a white-grayish dust. Antenne entirely black ; front shining metallic-green ; the frontal bristles black, in another direction fallow-brownish, with a yellow lustre. The cilia of the whole orbit yellowish. Thorax and scutellum pale metallic-green, with whitish dust, but shining and fringed with yellow bristles. Metathorax and pleure of the same pale-green color, the latter with thick whitish dust. Abdo- men uniformly yellow, only on the upper side of the last segment green. All the cox and feet yellow, only the last joint of the 222 DIPTERA OF NORTH AMERICA. [PART II. tarsi brownish-black ; all the hairs, as well as the few short bristles upon them, are yellowish, though the latter appear dark when held towards the light. Halteres and tegule yellowish, the latter with yellowish cilia. Wings hyaline with a yellow-grayish tinge and yellow veins; the short and steep posterior transverse vein lies more closely to the axillary incision than to the tip of the wing; its anterior end is not quite so far distant from the extreme basis of the costa as from the tip of the wing. Hab. New York. 2. C. delicatus Lorw. 9.—Leate viridis, abdominis segmentis se- cundo et tertio flavis, antennis nigris, palpis flavis. Bright green, the second and third abdominal segments yellow, antenne black; palpi yellow. Long. corp. 0.08. Long. al. 0.10. Syn. Chrysotimus delicatus Lonw, Neue Beitr. VIII, 74, 2. Face blackish-green, covered with white-grayish, not very strik- ing, dust. Palpi pale-yellowish. Antenne black. Front metal- lie-green, indistinctly covered with whitish dust; frontal bristles black, in another direction fallow-brownish with yellow lustre. The cilia of the orbit seem to be altogether yellow. Thorax and scutellum pale metallic-green, with gray-whitish dust, but shining and fringed with yellow bristles. The metathorax and the pleurz have a similar, but more dull, coloring; the latter are covered with white-grayish dust. The first and the two last ab- dominal segments are green and shining, the second and third, in fresh specimens, are undoubtedly of a yellow color; in the only specimen, which I possess, both are infuseated to a considerable extent at their basis; upon the posterior corners they show a dusky-whitish color. The color of the venter cannot be distinctly perceived, but it seems to correspond with that of the upper side. Cox and feet yellow, only the last joint of the tarsi brownish- black. All their hairs, as also their bristles, are yellowish, though the latter appear to be dark when held towards the light. Hal- teres and tegule yellowish, the latter with yellowish cilia. Wings hyaline, tinged with grayish; towards the anterior margin with a yellow-grayish tinge; the veins on the posterior part are more yel- low-brownish, on the anterior part more yellow; the short poste- rior transverse vein has not such a steep position as in the pre- XANTHOCHLORWUS. 293 ceding species, and is a little more distant from the tip of the wing. Hab. New York. Gen. XLI. KANTHOCHLORUS. Characters, Color of the body non-metallic, yellow, often with green spots. Antenne very short; their first joint remarkably short and without hairs, the second transverse, the third very short ; the arista, which is distinctly clothed with hairs, is inserted upon the back of the third joint, in the vicinity of the basis. The thorax has upon its posterior half an impressed area, which is sloping downwards. The last segment of the fourth longitudinal vein is but very gently inflected, and converges somewhat towards the third longitudinal vein ; the sixth longitudinal vein disappears already far before the margin of the wing. Feet rather long; hind tarsi much shorter than the hind tibiz ; their first joint with- out bristles and shorter than the second. Abdomen of the male not elongated; the hypopygium rather swollen, not imbedded, pointing straight backwards, so that the abdomen thereby appears to be somewhat elongated; the appendages are small, but dis- tinctly visible. The abdomen of the female obtuse at the tip, somewhat impressed below, and without a coronet of bristles. In consequence of the color of the body, the species of Xantho- chlorus might perhaps be mistaken for species of the genera Chry- sotimus and Saucropus. In Chrysotimus the position of the arista is more subapical; the third and fourth longitudinal veins are parallel, the feet shorter, and the hind tarsi almost as long as the hind tibie, the hypopygium of the male is smaller and imbedded, and the last segment of the female abdomen protrudes in the form of a short ovipositor. Of all this, nothing is to be found in Xan- thochlorus. In Saucropus the abdomen is elongated, the hypopy- gium inflected under the abdomen and the last abdominal segment of the female is a sort of an ovipositor; all this is not to be found in Xanthochlorus; the feet of the species of Saucropus are also much more elongated than those of the species of Xanthochlorus. The name of this genus (from £arSo0s, yellow, and yaupos, green) has reference to the peculjar color of the species. Besides a few European species, only the following North 294 DIPTERA OF NORTH AMERICA. é [PART aT American species is known, which may perhaps be identical with one of the European species. i. KX. helwimus Lozw. 9%.—Flavus, fronte, facie et setis thoracis nigricantibus. Yellow, front, face and the bristles of the thorax blackish. Long. corp. 0.11. Long. al. 0.13. Syn. Xanthochlorus helvinus Loew, Neue Beitr. VII, 75, 1. Altogether yellow. Front and face blackish with whitish dust, which is more distinctly visible in an oblique direction. The arista, the bristles on the vertex and on the upper side of the thorax, black, but shifting into brown in a reflected light. A small blackish spot on the pleura, immediately below the root of the wing. Hab. Chicago. ; Observation.—This species resembles the European _X. tenellus Wied., very much, and is probably a slight variety of it. No plastic distinctions at all are to be seen; the only difference which I can perceive, is the darker color of the bristles upon the vertex and on the upper side of the thorax. The comparison of the male is necessary in order to determine whether this species can be con- sidered as a variety of X. fenellus. Gen. XLII. SAUCROPUS, The species of this genus, which older authors have united with Porphyrops, agree in many characters so much, and differ by these characters so sharply from the related species of the Doli- chopodide, that their claim to form a separate genus cannot be questioned. The following are the principal charactets of this genus: First joint of the antenne without hair on the upper side ; arista dorsal. The thorax with a sloping area upon the mid- dle of its posterior end. Feet very long and slender; hind tibiz elongated ; the first joint of the hind tarsi without bristles, shorter than the second. Abdomen elongated and narrow; especially in the male. Hypopygium disengaged, short and stout, inflected, with short, very little developed appendages. Color of the body principally, or at least partially, yellow. Hairs and bristles chiefly black. SAUCROPUS. 22h The characters by which the genus Sawcropus is distinguished from the related genera, need not be repeated here, as they have already been sufficiently explained among the characters of those genera. The name: of Saucropus (from savxpds, delicate, and mors, foot) has reference to the great slenderness of the feet, which distin- guishes all the species of this genus. The known species are distributed over Europe, America, and South Africa. The American species resemble more those of HKurope than those of South Africa; in the latter the third and fourth longitudinal veins are parallel, while in the European species the last segment of the fourth longitudinal vein approaches the third longitudinal vein, although very gradually, still, in gene- ral, very strongly. I. S. dimidiatus Lozrw. %.—Pallide flavus, thoracis linea media et macula postica nigris, abdomine nigrofasciato, setis coxarum anteriorum albidis. Pale-yellow, thorax with a black middle line and with a black spot upon the posterior end, abdomen with black bands; the anterior cox with whitish bristles. Long. corp. 0.18. Long. al. 0.17. Syy. Saucropus dimidiatus Lozw, Neue Beitr. VIII, 75, 1. Pale-yellowish. Face very narrow, white. Antenne bright- yellow. Front black with white dust; frontal bristles black. Cilia on the posterior orbit as well as the two stronger bristles behind the upper corners of the eyes, yellow-whitish. Upper side of the thorax reddish-yellow; the middle line and the sloping area on its posterior margin are black. Scutellum whitish-yellow with two strong black bristles; on the outside of each of these bristles there is a very small delicate hair, easily overlooked, which in all our European species is much stronger. Metathorax black ; the pleuree have a small black dot above the middle coxe. Abdo- men with three black transverse bands, the first in the vicinity of the basis of the second segment, the two following near the basis of the third and fourth segments; the two last are somewhat emarginated on the middle of their posterior margin. Hypopy- gium short and clumsy, shining black; its small exterior appen- dages are white. Coxie and feet pale-yellowish; on the fore and middle coxe there are altogether no black, but only whitish bris- 15 996 DIPTERA OF NORTH AMERICA. [PART Tie tles ; the hairs on the front side of the fore coxe are also whitish ; on the outside of the hind coxe there is a solitary black bristle. Tibize and tarsi elongated and very slender; middle and hind tarsi strongly infuscated from the tip of the first joint; the fore tarsi from the tip of the first joint become likewise more dark, though their color changes much more gradually into brown. Cilia of the tegule whitish. Wings hyaline with a slight gray-yellowish tinge ; the end of the fourth longitudinal vein approaches rather strongly the end of the third. Hab. Florida, District of Columbia. (Osten-Sacken.) 2. 8. rubellus Lorw. 9.—Pallide flavus, thoracis macula postica, abdominis fasciis setisque coxarum nigris. Pale-yellow ; thorax with a black spot upon the posterior side; abdomen with black bands; cox with black bristles. Long. corp. 0.25. Long. al. 0.23. Syy. Saucropus rubellus Lozw, Neue Beitr. VIII, 76, 2. Pale-yellowish. Face narrow, white. Antenne bright-yellow. Front black with white-yellowish dust. The frontal bristles and the two stronger bristles behind the upper corners of the eyes, black. Cilia of the orbit yellowish-white. Upper side of the thorax reddish-yellow, the sloping area on its hind margin black. Seutellum yellowish with two strong black bristles ; on the outside of each there is a very minute delicate hair, easily overlooked. Metathorax brown only on the upper margin and upon the mid- dle line. Pleurz with a black dot above the middle coxe. . 8. haemorrhoidalis Motsch. scincetus Lec. Malachius sc. Say. Anthocomus se. Er, infuscatus (Motsch.)— ? an praec. var. trimaculatus (Motsch.)— rufomarginatus.— Scalopterus ruf. Motsch. granularis Lec. Anthocomus yr. Er. basalis Lec. Anthocomus bas. Lec. melanopterus (Hr.)— an Ebaeus bicolor ? ? morulus Lec. Ebaeus mor. Lec. Acletus Lec. nigrellus Lec. Ebaeus Er. apicalis Er. Malachius apie. Say. Mal. minutus Meds. bicolor Lec. pusillus Lec. Malachius pus. Say. oblitus Lec. ? submarginatus Lec. Microlipus Lec. laticeps Lec. Malachius lat. Lee. (¢). Charopus Er. moerens Lec. longicollis Motsch. uniformis Motsch.— Endeodes Lec. basalis Lec. Atelestus bas. Lec. abdominalis Lec. Atelestus abd. Lee. collaris Lec. Atelestus coll. Lee, MALACHIDAE—CLERIDAE, DASYTINI. Pristoscelis Lec. § Byrvrosomus Motsch. fuscus Lec. Dasytes fuse. Lec. B. griseust Motsch. B. rufipes Motsch. § TricHocurovus Motsch. ater Bland (atrus). ?'T. eylindricus Motsch. laticollis Lec. Dasytes lat. Mann. fulvitarsis Bland. antennatus (Jotsch.) D. griseus|| Lec. brevicornis Lec. californicus (Motsch.)— cylindricus (Motsch.)— § Emmenotarsvs Motsch. brevipilosus Lec. hirtellus Lec. sordidus (Lec.) suturalis (Lec.) . conformis (Lec.) grandiceps Lec. quadricollis ( Lec.) squalidus (Lec.) aenescens (Lec.) punctipennis Lec. pedalis Lec. texanus Lec. rufipennis (Lec. ) ? parvicollis (J/ann.)— § serricollis Lec. Listrus Motsch. canescens Motsch. Dasytes can. Mannh. difficilis (Lec.) rotundicollis Motsch, Dasytes rot. Lee. obscurellus (Lec.) luteipes (Lec.) punctatus Motsch.— tibialis Motsch.— senilis (Lec.) erythropus (Lec.) pusillus (Lec.) Dolichosoma Stephens. foveicollis Lec. Dasytes fov. Kirby. nigricornis Lec. Pristoscelis nigr. Bland. Eschatocrepis Lec. constrictus (Lec.) var. L. constricollis Motsch. Allomyx Lec. sculptilis (Zec.) plumbeus Lec. Dasytes Payk. breviusculus Motsch. hudsonicus Lec. Melyris Fabr. basalis Lec. Dasytes bas. Lee. cribratus Lec. Dasytes cribr. Lec. RHADALINI. Rhadalus Lec. testaceus Lec. CLERIDAE. CLERINI. Elasmocerus Lec. terminatus Lec. Tillus term. Say. T. (Macrotelus||) t. AZwg. Monophylla|| term. Spz7. M. megatoma Spin. (¢). Tillus Fabr. collaris Spin.—! Perilypus Spin. carbonarius Spin.— Cymatodera Gray. brunnea Mels. cancellata Lec. * T. pectinicornis Klug is not an American but an Asiatic species. morosa Lec. ? eylindricollis Chevr. inornata Lec. Priocera in. Say. Tillus (C.) in. Klug. bicolor Lee. Tillus bie. Say. undulata Lec. Tillus und. Say. C. longicollis Spzz. C bosci Chevr. balteata Lec. fascifera Lec. un. sp. punctata Lec. tenera Lec. usta Lec. fuscula Lec. puncticollis Bland. angustata Spin. ovipennis Lec. pilosella Lec. n. sp. longicornis Lec, Opilus Latr. domesticus Alug.! Notoxus mollis var. Spzn. Priocera Kirby, castanea Lec. Opilus cast. Vewm. P. rufescens Spi. P. maculata Ziegler. Trichodes Herbst. ornatus Say. douglasianus White. hartwegianus White. bifasciatus Fubr.? tenellus Lec. an T. ornati gens? nuttalli Alug. Clerus nutt. Kirby. bibalteatus Lec. apivorus Germ. trifasciatus Stwrm. Clerus Geoffr. (emend. Kiesenw. ) Tuanasiues Latr. (emend. Duval.) § PsevpocLervs Duval. spinolae Lec. 1 Introduced into Canada. CLERIDAE. quadrisignatus Say. affiliatus Lec. rufescens Lec. laticinetus Lec. analis Lec. nigripes Say. incertus Lec. dubiust Spin. nigripest Lec. vix a praecedente differt. nigrifrons Say. rosmarus Say. oculatus Spi. var. angustus Lec. lunatus Spin. bicolor Me/s. ichneumoneus fbr. rufus Oliv. mexicanus Laporte, abruptus Lec. arachnodes Klug.— crabronarius Spin.— cordifer Lec. eximius Mann. holosericeus White. nigriventris Lec. sphegeus / abr. moestus Alug. truncatus Lec. viduus Klug.— erythrogaster Spzn. thoracicus Oliv. monilis Meds. sexguttatus Fabr.— quadriguttatus Oliv.— § THanasimus Spin. trifasciatus Suy. dubius Fubr. Th. ruficeps Spzz. undatulus Say. nubilus Klug. Th. abdominalis|| Avrby. vix a praec. differt. rubriventris Lec. § THANEROCLERUS Spin. sanguineus Say. ? tantillus Lec. Cleronomus Klug, Cotypuus Spin. signaticollis (Spin.)— cinctipennis (Spin.)— rufipennis (Spin.)— interceptus (Spin.)— 55 Hydnocera Newman. tricondylae Lec. unifasciata Lec. Clerus unif. Say. Hydn. punctata Spzz. subfasciata Lec. n. sp. subaenea Spin. steniformist Spzz. humeralis Newm. Clerus hum. Say. var. H. cyanescens Lec. var. H. difficilis Lec. rufipes Vewm.— pubescens Lec. sceabra Lec. discoidea Lec. pallipennis Lec. Clerus pall. Say. Hydn. serrata Newm. suturalis Spin. Clerus sut. Klug. Hydn. limbata Spin. bicolor Lec. pedalis Lec. n. sp. verticalis Lec. Trichodes vert. Say. . Hydn. curtipennis Vewm. Clerus brachypterus Klug. H. lineaticollis Spzz. schusteri Lec. n. sp. tabida Lec. longicollis Ziegler. aegra Newm.— ENOPLIINI. Phyllobaenus §pin. dislocatus Lec. Enoplium disl. Say. E. distrophum Klug. Ph. transversalis Sp7z. Ichnea Lap. laticornis Lec. Enoplium lat. Say. Tarsostenus Spin. univittatus Spin. Clerus univitt. Rossz. Opilus albofasciatus Me/s. Tarsostenus alb. Lec. 2 A variety of this species oceurs in California, according to White, B. M. Cat. 31; but a vanety of 7. ornatus Say is more probably intended. 56 LYMEX YLIDAE—CUPESIDAE—PTINIDAE. Chariessa Perty. vestita Spin. Brachymorphus vest. Chev. Enoplium vest. Klug. Corynetes spectabilis Lap. dichroa Lec. Enoplium dichr. Lee. pilosa Lec. Lampyris pil. Forster. Enoplium pil. Say. Pelonium pil. Spzz. a. Onusta. Enoplium on. Say. H. marginatum|| Say. Cregya Lec. vetusta Lec. Pelonium vet. Spzz. Enopl. venustum Hald. Prioc. albomaculata Zveg/. fasciata Lec. Enoplium fase. Lec. § oculata Lec. Clerus oc. Say. Pelon. marginipenne Spiz. mixta Lec. n. sp. Orthopleura Spin. texana bland. damicornis Spin. Tillus dam. Fadr. Enopl. thoracicum Say. KE. punctatissimum Chevr. K. bimaculatum Me/s. Enoplium Latr. quadripunctatum Say. quadrinotatum Hald. scabripenne Lec. n. sp. Lebasiella Spin. janthina Lec. n. sp. nigripennis Lec. n. sp. Laricobius Rosen- hauer. rubidus Lec. un. sp. Corynetes Herbst. § Necrosia Spin. rufipes Fabr. Dermestes ruf. Fadr. Necrobia ruf. Ol’. ruficollis Fabr. Dermestes ruf. Fadr. Necrobia ruf. Olzv. violaceus /erbst. Dermestes viol. Linn. Necrobia viol. Stephens. Necr. errans JVels. marginellus Chevr. an rite Am. Bor. ? § OPETIOPALPUS Spin. luridus (Spin.)— LYMEXYLIDAE. Lymexylom Fabr. sericeum Harris. Hylecoetus Latr. lugubris Say.— americanus Harris.— CUPESIDAE. Cupes Fabr. capitata Fabr. concolor Westwood. cinerea Say. trilineata JVels. serrata Lec. PTINIDAE. PTINIDAE (genuini). PTININI. Gibbiumn Scopoli. scotias Scop. Ptinus scotias Linz. Mezium Curtis. americanum Doieldieu. Gibbium amer. Laporte. Trigonogemius Solier. farctus Lec. n. sp. Niptus Boieldieu. ventriculus Lec. * Philoxylon Lec. Liozowm Muls. Ptinus Linn. fur Linn. humeralis Say. brunneus Duftschmidt. frontalis Mes. verticalis Lec. quadrimaculatus JMels. bimaculatus J/els.— interruptus Lec. EUCRADINI. Eucrada Lec. humeralis Lec. Hedobia hum. JVe/s. ANOBIIDAE. ANOBIINI. Ernobius Thoms.! mollis Thoms. Anobium molle Faér. An. convexifrons J/e/s. Philoxylon cony. Lec. Liozoum molle M/s. punctulatus Lec. Anobium punct. Lec. alutaceus Lec. Philoxylon al. Lec. debilis Lec. granulatus Lec. marginicollis Lec. Anobium marg. Lee. tenuicornis Lec. Ozognathus Lec. cornutus Lec. Anobium corn. Lec. misellus Lec. Xestobium Motsch.? tesselatum Jotsch. Anobium tess. Fadr. Cnecus tess. Thoms. Oligomerus Redt. sericans Lec. Anobium ser. Wels. obtusus Lec. alternatus Lec. 2 Cnecus Thoms, | Sitodrepa Thoms.! panicea Thoms. Anobium pan. Faér. A. (Artobium) pan, Muals. Ctenobium Lec. antennatum Lec. Ptinodes Lec. setifer Lec. Anobium set. Lec. Trichodesma Lec. gibbosum Lec. Anobium gibb. Say. Nicobium Lec. hirtum Lec. Anobium hirt. Z2/. A. (Neobium) hirt. Mus. Hadrobregmus Thoms.? § CacorEmnus Lec. errans Lec. Anobium err. Me/s. Cacotemnus err. Lec. carinatus Lec. Anobium car. Say. linearis Lec. § pumilio Lec. gibbicollis Lec. Anobium gibb. Lec. Hemicoelus gibb. Lec § foveatus Lec. Anobium fov. Kirby. Hemicoelus foy. Lec. Anobium Fabr. (emend. Thomson.) notatum Say. quadrulum Lec. Trypopitys Redt. sericeus Lec. Xyletinus ser. Say. punctatus Lec. PTINIDAE. Petalium Lec. bistriatum Lec. Anobium bistr. Say. Theca Muls. profunda Lec Eupactus Lec. nitidus Lec. punctulatus Lec. pudicus Lec. ? Anobium pud. Boh. Xyletinus Latr. peltatus Lec. Anobium pelt. Harris. pallidus Lec. mucoreus Lec. fucatus Lec. puberulus Boh.— Lasioderma Steph. serricorne Lec. Ptinus serr. Faédr. Pseudochina serr. Macs. Ptilinus testaceus Duftsch. | Xyletinus test. Starm. Lasioderma test. Steph. X. pallidus Lap. dermestinum Lec. Catorama Guér. ? simplex Lec. Hemiptychus Lec. | punctatus Lec. gravis Lec. Doreatoma grave Lec. pusillus Lec. Doreatoma pus. Lec. borealis Lec. ventralis Lec. obsoletus Lec. nigritulus Lec Protheca Lec. puberula Lec. hispida Lec. Dorcatoma Herbst. setulosum Lec. incomptum Lec. 57 Caenocara Thoms.’ oculata Lec. Doreatoma oe. Say. (v7). D. simile Say. (2 ). Tylistus sim. Lec. scymnoides Lec. bicolor.— Dorcatoma bic. Germ. PTILININI. Ptilinus Geoffr. , ruficornis Say. Pt. bicolor Mels. basalis Lec. thoracicus Lec.‘ Tomicus thor. Randall. BOSTRICHIDAE. ENDECATOMINI. Endecatomus Mellié. reticulatus J/ellié. Anobium ret. Herbst. Dictyalotus ret. Redt. rugosus Lec. Triphyllus rug. Randall. End. dorsalis Mediié. BOSTRICHINI. Simoxylon Duftsch. asperum Lec. sericans Lec. 4-spinosum Lec. n. sp. sextuberculatum Lec. basilare Lec. Apate bas. Say. declive Lec. Bostrichus Geoffr. (emend. Guérin). serricollis Lec. Apate serr. Germ. Apate bicornis Say. ? A. bicornis Weber. armiger Lec. n. sp. 'truncaticollis Lec. n. sp, 7 ' Anobium subg. Artobium Muls. 3 Tylistus Lec., Enneatoma Muls. 2 Cacotemnus and Hemicoelus Lec “ Ptilinus serricollis Say, Journ. Ac. Nat. Sc. Phila. 3, 186, is a Ptilodactyla. 58 Am phicerus Lec. bicaudatus Lec. Apate bic. Say. (ov). Ap. aspericollis Germ. (¢ ). punctipennis Lec. Bostrichus punct. Lec. fortis Lec. n. sp. Dinoderus Steph. punctatus Lec. Apate punct. Say. substriatus Steph. Apate substr. Payk. porcatus Lec. n. sp. cribratus Lec. n. sp. densus Lec. n. sp. Rhizopertha Steph. pusilla Steph. Sinodendron pus. Fadr. PSOINI. Polycaom Lap. stoutii Lac. Alloeoenemis st. Lec, ovicollis Lac. Exops ov. Lec. exesus Lec. pubescens Lec. n. sp. punctatus Lec. n. sp. confertus ec. n. sp. Acrepis Lec. maculata Lec.— LYCTIDAE. Lyctus Fabr. striatus els. var. axillaris els. opaculus Lec. n. sp. cavicollis Lec. n. sp. planicollis Lec. Trogoxylon Lec. parallelopipedum Lec. Xylotrogus par. Meds. punctatum Lec. n. sp. SPHINDIDAE. Sphindus Chevr. americanus Lec. n. sp. CIOIDAE.! Cis Latr. dichrous Lec. creberrimus J/ellié. setulosus Mellié. fuscipes Mellié. americanus Mannh. bicarinatus Mannh. tridentatus Mannh. ephippiatus Mannh.— micans (fide Kirby).— Anobium mic. Fadr. chevrolatii Mellié. atripennis Mellié. dubius Mellié. pumicatus Mellié. minutissimus Jellié. obesus Jellié. punctatus Mellié. tristis Mellié. subtilis Mellié. Ennearthron Mellié.? vitulus Lec. Cis vitulus Manzh. mellyi Mellié. Ceracis Mellié. sallei Mellié. militaris Mellié. TENEBRIONIDAE. TENTYRIIDAE. EPIPHYSINI. Edrotes Lec. ventricosus Lec. rotundus Lec. Pimelia rot. Say. SPHINDIDAE—CIOIDAE—TENEBRIONIDAE. TENTYRIINI.$ Triorophus Lec. nodiceps Lec. laeviceps Lec. rugiceps Lec. punctatus Lec. Triphatlus Lec. perforatus Lec. n. sp. Craniotus Lec. pubescens Lec.— Trimytis Lec. pruinosa Lec. Cryptadius Lec. inflatus Lec.— Eurymetopon Esch. abnorme Lec. rufipes Esch. convexicolle Lec. punctulatum Lec. n. sp. ochraceum Lsch.— § serratum Lec. n. sp. Emmenastus Motsch. (emend Lec.) punctatus Lec. n. sp. pinguis Lec. n. sp. convexus Lec. n. sp. obtusus Lec. obesus Lec. Eurymetopon ob. Lee. ater Lec. Eurymetopon at. Lec. rugosus JMotsch.— § longulus Lec. Eurymetopon long. Lec. texanus Lec. n. sp. Auchmobius Lec. sublaevis Lec.— 1 T have not studied critically the species of this family, aud the list is simply a compilation: there are many species in my collection which have not yet been identified. * Cis thoracicornis Ziegl. Proc. Ac. Nat. Sc. Phila. 2, 270, belongs to this genus, but the description does not enable it to be identified. * The arrangement here adopted is somewhat different from that which is set forth in Classification of Coleoptera of North America, pp. 213, 214, and is partly modified according to the principles made known by Kraatz, Rev. Tenebr. alten Welt, 69, sqq. EPITRAGINI. Epitragus Latr. submetallicus Lec. acutus ec. n. sp. arundinis Lec. n. sp. canaliculatus Say. plumbeus Lec. n. sp. tomentosus Lec. n. sp. Schoenicus Lec. puberulus Lec. n. sp. ANEPSIINI. Anepsius Lec. delicatulus Lec. Batulius Lec. setosus Lec. rotundicollis Lec. ZOPHERINI. Zopherus Sol. nodulosus Sol. variolosust Hald, tristis Lec. concolor Lec. Phioeodes Lec. diabolicus Lec. Nosoderma diab. Lec. pustulosus Lec. Nosoderma pust. Lee. Noserus Lec. plicatus Lec. Nosoderma pl. Lec. Phellopsis Lec. porcata Lec. Nosoderma pore. Lec. obcordata Lec. Boletophagus obec. Kirby. DACODERINI. Dacoderus Lec. Striaticeps Lec. TENEBRIONIDAE. 59 STENOSINI. Hologlyptus Lac. Araeoschizus Lec. | 28tomosis Lac. Asida anast. Say. costipennis Lec. Pactostoma anast. Lec. APOCRYPHINI. Pelecyphorus Sol. costipennis Lec. Apocrypha Esch. | sordidus Lec. irregularis Lec. var. aeger Lec. morbillosus Lec. aegrotus Lec. carinatus Lec. anthicoides Lsch. dischyrioides Lec. ASIDIDAE. bifurcus Lec. r connivens Lec. n. sp. NYCTOPORINI. obsoletus Lec. rimatus Lec. Nyctoporis Esch. var. subeostatus Lec. marginatus Lec. galeata Lec. | confluens Lec. cristata Esch. parallelus Lec. carinata Lec. sexcostatus ec. aequicollis Esch. muricatulus Lec. hispidulus Lec. CRYPTOGLOSSINI. | | Birsutus Lec. costipennis Lec. difformis Lec. Centrioptera Mann. var. elatus La: caraboides Mann.— angulatus Lec. muricata Lec. ; spiculata Lec. Asida Latr. an muricate gens? opaca Say. Oochila Lec. lirata Lec. Pelecyphorus lir. Lec. infausta Lec. ‘polita Say. Asbolus ? ruf. Lec. | seriata Lec. § Evscurpes Lec. Cryptog'ossa ser. Lec. | obovata (Lrc.) | convexa (Lec.) | convexicollis (Lec.) verrucosa Lac. puncticollis Lec. n. sp, Asbolus verr. Lec. laevis Lac. Asbolus laey. Lee. BRANCHINI. Cryptoglossa Sol. | | | | ASIDINI. Branchus Lec. % 3 ‘floridanus Lec. n. sp. Microschatia Sol. | inaequalis Lec. ciensttan puncticollis Lec. NTINI. sulcipennis Lec. i Coelus Esch. Astrotus Lec. globosus Zee. contortus Lec. |Ciliatus Lsch. 60 Eusattus Lec. § Discopemus Lec. reticulatus Lec. Zophosis ret. Say. § laevis Lec. n. sp. § Evsarrus Lec. difficilis Lec. convexus Lec. muricatus Lec. dilatatus Lec. puberulus Lec. productus Lec. § Contprnus Lec. dubius Lec. § robustus Lec. n. sp. Coniomtis Esch. viatica Esch. affinis Lec. eschscholtzii Mann. abdominalis Lec. Ovalis Lec. lata Lec. n. sp. obesa Lec. subpubescens Lec. nemoralis sch. puncticollis Lec. TENEBRIONIDAE genuini). BLAPTINI. Eleodes Esch. obscura Lsch. Blaps obscura Say. ? B. hispilabris Say. a, dispersa Lec. B. deleta Lec. arata Lec. sulcipennis Mann. acuta Esch. Blaps acuta Say. suturalis Hsch. Blaps sut. Say. texana Lec. § pedinoides Lec. asperata Lec. robusta Lec. TENEBRIONIDAE, tricostata Lec. Blaps trie. Say. Pimelia alternata Kirby. El. planata|| Solier. § sulcata Lec. 2. convexa Lec. nupta Lec. gracilis Lec. sponsa Lec. caudifera Lec. obsoleta Lec. Blaps obs. Say. § grandicollis Mann. § fusiformis Lec. subnitens Lec. extricata Lec. Blaps extr. Say. cognata Hald. seriata Lec. carbonaria Lec. Blaps carb. Say. vicina Lec. soror Lec. immunis Lec. debilis Lec. striolata Lec. ventricosa Lec. lucae Lec. n. sp. innocens Lec. n. sp. quadricollis Hsch. nigrina Lec. longicollis Lec. haydenii Lec. gigantea Mann. gentilis Lec. omissa Lec. armata Lec. femorata Lec. laticollis Lec. a, acuticauda Lec. dentipes Lsch. § clavicornis Esch. impressicollis Boh. § granulata Lec. humeralis Lec. aspera Lec. n. sp. obtusa Lec. hirsuta Lec. subaspera Lec. n. sp. scabripennis Lec. inculta Lec. planipennis Lec. n. sp. producta “sch. a. COnstricta Lec. reflexicollis J/ann.— Planata Esch. a, parvicollis Esch. consobrina Lec. veseyi Lec. scabrosa Esch. subligata Lec. viator Lec. vix a sequente differt. pimelioides Mann. rotundipennis Lec. stricta Lec. intricata Mann. an sequentis gens? cordata Esch. tuberculata Esch. granosa Lec. n. sp. Discogenia Lec. scabricula Lec. Eleodes seabr. Lec. marginata Lec. Eleodes marg. Esch. a. fischeri (JJann.) Promus Lec. opacus Lec. Blaps opaca Say. Eleodes opaca Lec. Embaphion Say. muricatum Say. var. concayum Lec. § contusum Lec. § depressum Lec. Eleodes depr. Lec. PEDININI. Pedinus Latr. ? suturalis Say.— Opatrinus Latr. aciculatus Lec. notus Lec. Opatrum not. Say. Tenebrio minimus Beauv. Blapstinus Waterh. crassus Lec. sordidus ec. obliquus Lec. n. sp. sulcatus Lec. dilatatus Lec. ? Opatrum pullum Say. longulus Lec. angustus Lec. brevicollis Lec. lecontei Muls. pubescens|| Lec. vestitus Lec. pratensis Lec. pulverulentus Mann. moestus Mels. metallicus Lec. Blaps met. Fadr. Opatrum interruptum Say. B. aeneolus Mels. B. interruptus Lec. B. luridus Mus. Conibius Lec. seriatus Lec. parallelus Lec. Notibius Lec. puberulus Lec. puncticollis Lec. sulcatus Lec. granulatus Lec. opacus Lec. n. sp. OPATRINI. Ammodonus Muls. fossor Muls. Opatrum fossor Lec. Ephatlus Lec. latimanus Lec. Heliopates lat. Lec. SCAURINI. Eulabis Esch. bicarinata Esch. grossa Lec. nl. Sp. rufipes Lsch. § Epantivus Lee. ‘obscura Lec. | TENEBRIONIDAE,. § Apsena Lec. pubescens Lec. Cerenopus Lec. concolor Lec. cribratus Lec. bicolor Lec. sulcipennis Lec. TENEBRIONINI. Polypleurus Sol. nitidus Lec. n. sp. geminatus Sol. perforatus Lec. Upis perf. Germ. Pol. punctatus Sol. Rhinandrus Lec. gracilis Lec. n. sp. Coelocnemis Mann. obesa Lec. dilaticollis Mann. magna Lec. punctata Lec. californica Mann.— Cibdelis Mann. blaschkii Mann. bachei Lec. Scotobaenus Lec. parallelus Lec. Centronopus Sol. opacus Lec. § calcaratus Lec. Tenebrio eale. Fabr. T. coracinus Knoch. T. reflexus Say. 61 Xylopinus Lec. saperdoides Lec. Tenebrio sap. Oliv. Helops sap. Beauv. (2 ). H. calcaratus Beauv. (7 ). Ten. anthracinus Azoch. aenescens Lec. 0. sp. rufipes Lec. Tenebrio ruf. Say. Haplandrus Lec. _femoratus Lec. Trogosita fem. Fadr. Tenebrio fem. Beauv. | Upis fulvipes Herdst. concolor Lec. nu. sp. Upis Fabr. ‘ ceramboides Fabr. | Tenebrio cer. Linz. | U. reticulata Say. Nyctobates Lec. inermis Mann. pennsylvanica Lec. Tenebrio pens. DeGeer. Upis chrysops Herést. Tenebrio sublaevis beauv. ‘intermedia Hald. barbata Lec. Tenebrio barb. Knoch. ? Upis glabra Herbst. Iphthimus Truqui. ‘serratus Lac. | Nyctobates serr. Manz. 'sublaevis Lec. Nyctobates subl. Bland. opacus Lec. n. Sp. Glyptotus Lec. cribratus Lec. | ?Ten. variolosus Beauv. ? Hel. carolinensis Beauv. ?'T. aeneus De Geer. Merinus Lec. laevis ec. Tenebrio laevis Oliv. Pachyurgus Lec. aereus /ec. Iphthinus aer. Meds. Tenebrio Linn. /obscurus Fabr. | tristis Hald. |molitor Linn. |castaneus Anoch. interstitialis Say. |? variolosus{ Beauv.— |? elongatus Beaur.— |? rufimasus Say.— 62 § Neatus Lec.! tenebrioides Lec. Helops tenebr. Beawv. Tenebrio badius Say. Bius Muls, estriatus Lec. Tenebrio estr. Lec. HETEROTARSINI. Anaedus Blanch. brunneus Lec. Pandarus? br. Ziegler. rotundicollis Lec. Paratenetus Spin. punctatus Spin. fuscus Lec. ULOMINI. Tribolium M’Leay. ferrugineum Wollaston. Trogosita ferr. Fwbr. Tenebrio ferr. Fadr. Dermestes navalis Fadr. Lyctus nav. adr. Ips testacea adr. Colydium castaneum Herbst ? Ips cinnamomea Herbst. Tribclium cast. J’ Leay. Stene ferr. Stephens. Margus ferr. edt. madens edt. Tenebrio mad. Charp. Margus obseurus Redt. Aphanotus Lec. brevicornis Lec. Eulabis brev. Lec. Gnathocerus Thunb. cornutus Thunb. Trogosita corn. Fabr. Cerandria corn. Lucas. maxillosus.— Trogosita max. Fabr. Cerandria max. Manzh. TENEBRIONIDAE. Cynaeus Lec. angustus Lec. Tharsus Lec. seditiosus Lec. n. sp. Uloma Laporte. impressa Mels. imberbis Lec. n. sp. cava Lec. n. sp. longula Lec. punctulata Lec. n. sp. Alphitobius Steph. diaperinus Wollaston. Tenebrio diap. Panzer. Phaleria diap. Latr. Heterophaga diap. Lucas. Uloma mauritanica Crrtzs. A. mauritanicus Steph. Heterophaga diap. Lucas. piceus J/uls. Helops pic. Olivier. ? Ten. mauritanicus Fadr. Tenebrio fagi Panz. Phaleria fagi Latr. Huloma fagi Curtis. ? Tenebrio oryzae Herbst. A. picipes Steph. Heterophaga maur. Lucas. H. fagi Redt.* Ulosonia Laporte. marginata Lec. Uloma marg. Lec. TRACHYSCELINI. Wrachyscelis Latr. flavipes JVels. PHALERIINI. Phaleria Latr. pilifera Zc. n. sp. rotundata Lec. testacea Say. longula Lec. n. sp. picipes Say. debilis Lec. n. sp. globosa Lec. humeralis Lap. picta Mann.— CRYPTICINI. Crypticus Latr. obsoletus Say. BOLETOPHAGINI. Boletotherus Cand. cornutus Candéze. Boletophagus corn. Faér. Opatrum corn. Panzer. Phellidius cor. Lec. (olim).* Boletophagus llliger. corticola Say. depressus Lec. Eledona depr. Randall. Bol. tetraopes Newm. Rhipidandrus Lec. flabellicornis Lec. Xyletinus flab. Sturm. DIAPERINI. Pentaphyllus Latr. pallidus Lec. n. sp. Diaperis Geoffroy. hydni Fabr. maculata Oliv. Hoplocephala Lap. viridipennis Lap. Diaperis vir. Fadér. bicornis Lec. Diaperis bie. Oliv. Hispa bic. Fabr. Opl. virescens Lap. D. (Arrhenoplita) bic. Kirby. * Although the middle trochantin is scarcely visible in this species I do not think it ean be properly separated from the genus Tenebrio. * The synonymy of the two species of Alphitobius, both of which are introduced, is copied from the excellent work of Mulsant, Coleopt. France, Latigénes, p. 236, 238. * This genus was characterized by me under the name Phellidius in the first issue of the Class. Col. N. America, p. 236, but on learning that it had been previously described by Candéze, the proper alteration was made in the next issue. TENEBRIONIDAE. chalybea Lap.— HYPOPHLOEINI.? collaris Lap.— Evoplus Lec. Platydema Lap. | ferrugineus Lec. n. sp. excavatum De). Diaperis exc. Say. cyanescens Lup. parallelus Mels. .erythrocerum Lap. | thoracicus J/e/s. § _cavus Lec. n. sp.3 oregonense Lec. politum Lap. subcostatum Lap. americanum Lap. clypeatum //ald. laevipes //ald. picilabrum J/els. ellipticum Lap. Mycetophagus ell. Fadr. Tenebrio ell. Fadr. flavipes Lap. Diaperis flav. Fadr. basale Hald. ruficorne Hald. Diaperis ruf. Starm. P. rufiventre Lap. P. anale Hald. Neomida rufa Me/s. ruficollis Lap. sanguinicolle Hald. Neomida sang. Mels. . laeve Hald. Dioedus Lec. quadrimaculata Lap.— | punctatus Lec. n. sp. cyanea Lap.— pallens Lap.— Delopyegus Lec. crenatus Lec. n. sp. Eutochia Lec. picea Lec. Uloma picea Mels. Aniara|| picea Lac. Sitophagus Mauls. pallidus Lec. Pytho pall. Say. Adelina pall. Lec. planus Lec. Adelina plana Lec. Prateus Lec. fusculus Lec. n. sp. HELOPINI. Metaclisa DuVal. atra Lec. n. sp. Cratidus Lec. osculans Lec. Amphidora ose. Lec. Scaphidema Redt. aeneolum Lac. Amphidora Esch. Nelites aen. Lec. nigropilosa Lec. littoralis sch. Alphitophagus Steph.! bifasciatus Lec. Diaperis bif. Say. Stenotrichus Lec. rufipes Jc. Amphidora? ruf. Lec. Hypophloeus Fabr. 63 ’ attenuatus Lec. Amphidora? att. Lec.* Helops Fabr. micans Fubr. vittatus Oliv. taeniatus Beauv. rugulosus Lec. impolitus Lec. n. sp. undulatus Lec. n. sp. americanus Beauv.— venustus Say. laetus Lec. pernitens Lec. californicus Mann. angustus Lec. gracilis bland. punctipennis Lec. n. sp. sulcipennis Lec. n. sp. bachei Lec. rugicollis Lec. n. sp. opacus Lec. discretus Lec. n. sp. cisteloides Germ. convexulus Lec. aereus (erm. pullus Say. aratus Say. tumescens Lec. n. sp. farctus Lec. ?tristis Beauv.— MERACANTHINI. Meracantha Kirby. contracta Lec. Helops contractus Beauv. M. canadensis Kirby. Psorodes contr. Solier. Helops tumidus Mels. STRONGYLINI. Strongylium Kirby. tenuicolle Lec. Helops ten. Say. terminatum ec. Tenebrio term. Say.* 1 Phylethus Redt. 2 In the Class. Col. N. America this tribe is named Adelinini, but the genus Adelina was previously described by Mulsant as Sifophagus, and it therefore becomes necessary to change the name of the tribe. 3 H. nitidus Mels. is a specimen of the European H. castaneus, placed by error in the collection. “« The specimen is too much broken to enable me to refer it with certainty to the proper genus. § Dysmathes sahlbergi Mann , Bull. Mose. 1853, 265, does not appear in the list; the description is not sufficiently definite to indicate its place, but I cannot avoid thinking that on re-examination it will be found to have some relation to Iphthimus. The affinities with Gnathosia and Nyctelia mentioned by Mannerheim are improbable for both structural and geographical reasons, 64 AEGIALITIDAE. Aegialites Mann. debilis Wann. Elosoma ecalifornicum Motsch.| CISTELIDAE. Stenochidus Lec. gracilis Lec. Stenochia grac. Lec. cyanescens Lec. Prionychus cyan. Lec. Allecula Fabr. erythrocnemis Germ. punctulata Mels. socia Lec. nigrans Wels. Cistela atra|| Say. Hymenorus Muls. pilosus Lec. Allecala pil. Meds. obscurus Lec. Allecula obse. Say. punctulatus Lec. Allecula punct. Lec. niger Lec. Allecula nigra Mels. communis Lec. n. sp. rufipes Lec. Mycetophila ruf. Lec. confertus Lec. n. sp. densus Lec. n. sp. punctatissimus Lec.n.sp. humeralis Lec. n. sp. Cistela Fabr. brevis Say. var. erythropus Ziegler. pinguis Lec. Xystropus ping. Lec. opaca Lec. marginata Ziegler. § sericea Say.! | quadristriata Lec. CISTELIDAE—LAGRIIDAE—MONOMMIDAE—ANTHICIDAE. Isomira Muls. subnitida Lec. n. sp. Cistela 4-str. Couper. velutina Lec. n. sp. MONOMMIDAE. Mycetechares Latr.| Eiyporhagus Thoms. lecontei Thoms.— punctulatus Thoms. opaculus Lec. n. sp. § Stigmatoma Lec. haldemani Lec. n. sp. fraterna Lec. Cistela fr. Say. basillaris (Say).— § bicolor Couper. foveatus Lec. n. sp. tenuis Lec. n. sp. PYROCHROIDAE.? Eupleurida Lec. costata Lec. n. sp. binotata Lec. m Cistela bin. Say. Pyrochroa Fabr. flabellata Fubr. Chromatia Lec. femoralis Lec. amoena Lec. Cistela am. Say. Schizotus Newm. cervicalis Newm. Capnochroa Lec. fuliginosa Lec. Dendroides Latr. Cistela ful. Meds. Poconocerus Fischer. canadensis Lair. Pog. bicolor Mewm. concolor Lec. Pogonocerus cone. Newm. testacea Lec. ephemeroides Lec. Pogonocerus eph. Manz. Androchirus Lec. fuscipes Lec. Cistela fuse. Meds. luteipes Lec. Cteniopus Sol. murrayi Lec. n. sp. ANTHICIDAE. LAGRIIDAE. PEDILINI. Arthromacra Kirby. aenea Lec. Lagria aen. Say. Arthr. donacioides Kirby. Nematoplus Lec. collaris Lec. Eurygenius Ferté. wildii Lec. murinus Lec. Ichthydion mur. Hadd. constrictus Lec. Statira Latr. croceicollis Maklin.— resplendens WMels. gagatina els. 1 Cistela erythropa Kirby, Fauna Bor. Am. 239, cannot be identified from the description, but I suspect, if the tarsi are not lobed, that it is one of the species of Androchirus. 2 The sequence of the following families is different from that adopted in the Classification of Coleoptera of North America, in which my effort was to arrange them in such manner as to exhibit the gradual degradation of type from Tenebrionide to Stylopide. The arrangement in the present List is copied from DuVal’s Genera des Coléopt. d’Europe, and exhibits the collateral relations of the families in a more perfect manner than any other known to me. Stereopaipus Ferté. mellyi Fert’. badiipennis Lec. guttatus Lec. Bactrocerus Lec. concolor Lec. n. sp. Corphyra Say.! punctulata (Lec.) collaris Say. Anthicus coll. Say. (¢ ). P. rufithorax Wem. P. infumatust Lec. lugubris Say. Anthicus lug. Say. Pyroe. inornata Randall. Ped. imus Newm. Ped. nigricans Ziegler. labiata Say. Anthicus lab. Say. Pyrochroa infumata Hentz Ped. marginicollis Zzegler. pulchar (Lec.) impressa Say. Anthicus imp. Say. terminalis Say. Anthicus term. Say. (¢). ~ Ped. guttula Wewm.(¢). elegans (Lec.) Pyrochroa el. Hentz. Ped. haemorrhoidalis Ziegl. (Sc). Ped. ruficollis Ziegd. (2 ). newmani (JLec.) Ped. lugubris|| Newm. cyanipennis (Gland.) fulvipes (Newman.) canaliculata Lec. n. sp. MACRATRIINI. Macratria Newm. linearis Newm.— confusa Lec. murina Lec. Direaea murina Far. Macrarthria mur. Er. Macrarthrius mur. Ferté. ANTHICINI. Notoxus Geofir. anchora //en/z. Monocerus anch. Lec. 1 Pedilus auct. ANTHICIDAE. conformis Lec. cavicornis Lec. sparsus Lec. serratus Lec. Monocerus serr. Lec. monodon Ferté. Anthicus mon. Fuaér. Monocerus mon. Lee. apicalis Lec. Monocerus monodont Lec. marginatus Lec. subtilis Lec. bifasciatus Lec. Monocerus bif. Lee. talpa Ferté.— elegantulus Ferté.— bicolor Ferté. Anthicus bie. Say. Monocerus bic. Lec. pilati Ferté.— planicornis Ferté.— Tomoderus Ferté. interruptus(Verté.) vix a sequente differt. constrictus Say. Formicomus Ferté. scitulus Lec. mundus Lec. Formicilla mund. Lec. Anthicus Fabr. obscurus Ferté. nitidulus Lec. elegans Ferté. tenuis Lec. formicarius Ferté. cinctus Say. annectens Lec. californicus Ferté. rejectus Lec. floralis Paykull. var. basillaris Say. vicinis Ferté. thoracicus Ferté. confinis Lec. horridus Lec. cribratus Lec. difficilis Lec. confusus Lec. luteolus Lec. inigrita Jann. 65 | scabriceps Lec. |ephippium Ferté. flavicans Lec. rufulus Lec. cervinus Ferté. bifasciatus|| Say. bizonatus Ferté. terminalis Lec. punctulatus Lec. haldemani Lec. quadriguttatus|| Hald. quadrilunatus Ferté. biguttulus Lec. nigritulus Lec. obscurellus Lec. latebrans Lec. spretus Lec. nanus Lec. bellulus Lec. pubescens Lec. fulvipes Ferté. corticalis Lec. maritimus Lec. ictericus Ferté.— coracinus Lec. pallens Lec. granularis Lec. exilis Ferté.— laetus Ferté.— melancholicus Ferte.— pusillus Ferté.— squamosus fer/é.— lugubris Ferté.— impressipennis Ferté.— texanus Ferté.— pallidus Say.— ? politus Say.— Tanarthrus Lec. salinus Lec. alutaceus Lec. Anthicus al. Lec. XYLOPHILINI. Xylophilus Latr. melsheimeri Lec. notatus Lec. piceus Lec. fasciatus Mels. 'signatus //ald. | basalis Lec. Lacordaire, Gen. Col. V, 577, and DuVal, Gen. Col. Eur, III, 364. December, 1865. Differs from that genus by the 6th ventral segment being visible; compare 66 MELANDRYIDAE. SCRAPTIINI. Scraptia Latr. sericea Lec. Orchesia ser. Meds. Calasia ser. Hald. Allopeda Lec. lutea Lec. Scraptia lut. Hald. Canifa Lec. americana Lec. Seraptia am. Hadd. S. pallipes var. Me/s. pusilla Lec. Seraptia pus. Hald. pallipes Lec. Scraptia pall. Me/s. 8. biimpressa Hadd. TETRATOMINI. Tetratoma Fabr. truncorum Jee. n. sp. tessellata JMels. STENOTRACHELINI. Stenotrachelus Latr. arctatus Lec. Helops aret, Say. St. obscurus Mann. MELANDRYINI. Penthe' Newm. obliquata Newm. Helops obliqu. Fadr. pimelia Me/s. Helops pim. Fadr. P. funerea Newm. Synchroa Newm. punctata Newm. Meland. umbrina Meds. Phaiona umb. Hald. Nothus Oliv. varians Lec. n. sp. Phryganophlus Sahl. collaris Lec. Emamesa Newm. connectens Newm. Mel. maculata Lec. labiata Lec. Melandrya lab. Say. Melandrya Fabr. striata Say. var. excavata Hald. Prothaipia Lec. undata Lec. n. sp. Xylita Payk. laevigata Lac. Serropalpus laev. Hellentzs X. buprestoides Payk. Dircaea discolor Faér. Carebara Lec. longula Lec. n. sp. Spilotus Lec. quadripustulosus Lec. Hallomenus quadr. Mels. Zilora Muls. hispida ec. n. sp. Hypulus Payk. simulator Newm. trifasciatus Me/s. Marolia Muls. fulminans Lec. Hypulus? fulm. Lec. ? Dircaea holmbergi Mann. Serropalpus Hell. striatus Hellenius. substriatug Hald. obsoletus Hald. Enchodes Lec. sericea Lec. Dircaea ser. Hald. Phloiotrya ser. Lec. Dircaea Fabr. liturata Lec. Serropalp. quadrimacu- latus|| Say. concolor Lec. n. sp. ? decolorata landall.— MELANDRYIDAE—MORDELLIDAE. Anisoxya Muls. glaucula Lec. n. sp. Symphora Lec. flavicollis Lec. Scraptia flav. Hald. Trotomma flay. Lec. rugosa Lec. Scraptia rug. Hald. Trotomma rug. Lec. Hallomenus Panz. scapularis Mels. Mycetochares ruticornis Mels. var. H. luridus Hald. punctulatus Lec. n. sp. debilis Lec. n. sp. basalis Mann.— Eustrophus Latr. indistinctus Lec. confinis Lec. n. sp. bicolor Latr. Mycetophagus bie. Faér. bifasciatus Say. quadrimaculatus Mes. tomentosus Say. niger Mels. Orchesia Latr. castanea Mels. gracilis Mels. Microscapha Lec. clavicornis Lec. n. sp. MORDELLIDAE. MORDELLIDAE (genuini). ANASPINI. Diclidia Lec. laetula Lec. Anaspis laet. Lec. Pentaria Muls. trifasciata Lec. Anaspis trif. Meds. Anthobates trif. Lec. ‘ The genus Penthe represents in this country the European Mycetoma. fuscula Lec. nubila Lec. Anaspis Latr. nigra Lec. Hallomenus nig. Hald. atra Lec. sericea Mann. luteipennis Lec. flavipennis Hald. rufa Say. pallescens Mann. ventralis Meds. filiformis Lec. nigriceps Lec. pusio Lec. collaris Lec. MORDELLINI. Tomoxia Costa. bidentata Lec. Mordella bid. Say. lineella Lec. inclusa Lec. Glipa Lec. hilaris Lec. Mordella hil. Say. Mordelia Linn. quadripunctata Lec. Anaspis quadr. Say. borealis Lec. melaena Germ. Sphalera mel. Lec. scutellaris abr. irrorata Lec. inflammata Lec. an sequentis var. ? octopunctata Fabr. marginata Jels. lineata Mels. vix a praec. differt. lunulata Helmuth.— serval Say. oculata Say. insulata Lec. MORDELLIDAE, \triloba Lec. Anaspis tril. Say. undulata JJ/e/s. discoidea Jels. Glipodes Lec. 'sericans Lec. Mordella ser. Meds. helva Lec. bicinctella Lec. arida Lec. lutea (J/els.) nigricollis Helmuth. an sequentis var. ? trifasciata (Say.) lepidula Lec. an praecedentis var. ? limbalis (Je/s.) vapida Lec. vilis (Lec.) decorella Lec. ornata (Jels.) militaris Lec. scapularis (Say.) var. biplagiata Helmuth. comata (Lec.) tosta Lec. picicornis Lec. var. bipustulata Helmuth. var. rubrilabris Helmuth. cervicalis Lec. aspersa (Je/s.) intermixta Helmuth. fulvicollis (J/els.) var. dimidiata Helmuth. amica Lec. infima Lec. andreae Lec. grammica Lec ancilla Lec. varians Lec. ustulata Lec. semiusta Lec. var. rufula Helmuth. impatiens Lec. nigricans (JMels.) nigerrima Helmuth. | picilabris Helmuth.— | Mordellistema Costa.' 67 ruficeps Lec. nubila ( Lec.) guttulata Helmuth.— pustulata (Me/s.) convicta Lec. fuscipennis (Mels.) pectoralis (Lec.) morula Lec. ~ ambusta Lec. unicolor Lec. var. fuscoatra Helmuth. marginalis (Say.) divisa Lec. auricoma Helmuth. an M. tostae var. ? pubescens (fubr.) liturata (JVels.) bihamata (J/els.) hebraica Lec. leporina Lec. fuscata (Mels.) pityptera Lec. angusta Lec. attenuata (Say.) vittigera Lec. discolor (Mels.) scalaris Helmuth. suturella Helmuth.— var. rufiventris Helmuth. aemula lec. nigripennis (Fabr.)— RHIPIPHORIDAE. EVANIOCERINI. Pelecotoma Fisch. flavipes Mels. RHIPIPHORINI. Macrosiagon Hentz. dimidiata //entz. Rhipiphorus dim. Faér. flavipennis Lec. n. sp. Rhipiphorus Fabr.? octomaculatus (erst. puncticeps Lec. 1 Mordella auct.; those species having the authorities in parentheses were first referred to this genus by me; vide Pr. Acad. Nat. Se. Phila, 1562, p. 48 The ridges of the hind tibiw and tarsi are slightly variable in some species, and more extensive collections may prove a few of the species to be untenable. 2 [ have, in the Classification of Coleoptera, p. 276, adopted the name Emmenadia, given by Laporte, when he divided the Fabrician species into two genera. Du Val has clearly shown (Gen. Col. Eur III, 412,) that the name Rhipiphorus should have been retained for the present genus, instead of the one to which Laporte applied it. 68 militaris els. ?nigricornis Fadr. pectinatus Fabr. humeratus Fuér. sanguinolentus Germ. dubius Ves. impressus (els. ambiguus Meds. longipes Me/s, thoracicus Mes. varicolor Gerst. a, ventralis Fabr. maxillosus Mels. sayi Lec. bicolor|| Say. niger J/els. fasciatus Mels. ? tristis Fuaér. § cruentus (Germ. linearis Lec. n. sp. limbatus Fabdr. MYODITINI. Myodites Latr. scaber Lec. semiflavus Lec. luteipennis Lec. fasciatus Lec. Dorthesia fase. Say. walshii Lec. flavicornis Lec.— Dorthesia flav. Say. stylopides Newm. americanus Guér.— STYLOPIDAE. Stylops Kirby. childreni Gray.— Kenos Rossi. peckii Kirby. MELOIDAE. MELOINI. Meloe Linn. rugipennis Lec. STYLOPIDAE—MELOIDAE. montanus Lec. n. sp. tinctus Lec. n. sp. carbonaceus Lec. n. sp. afer Bland.— impressus Kirby. americanus} Er. ? var. niger [irby. opacus Lec. barbarus Lec. perplexus Lec. strigulosus Mann. angusticollis Say. “americanus Leach. moerens Lec. § sublaevis Lec. Nomaspis Lec. parvula Lec. Meloe parvus|| Hald. M. parvulus Hald. Henous Hald. confertus Lec. Meloe conf. Say. H. techanus Hald. Megetra Lec. cancellata Lec. Meloe cane. Er. vittata Lec. Cysteodemus vitt. Lec. Cysteodemus Lec. armatus Lec. wislizeni Lec. LYTTINI. Tricrania Lec. sanguinipennis Lec. Horia sang. Say. stansburii Lec. Horia stansb. Hald. murrayi Lec. Apterospasta Lec. valida Lec. Lytta val. Lee. segmentata Lec. Lytta segm. Say. Macrobasis Lec. fulvescens (JLec.) immaculata (Say). (9). L. articularis Say. (¢). longicollis (Lec.) ochrea (Lec.) albida Lec. Lytta albida Say. (? ). L. luteicornis Lec. (7). sublineata (Lec.) atrivittis (Lec.) torsa (Lec.) tenuis (Lec.) unicolor.— Cantharis un. Kirby. fabricii (Lec.) Lytta cinerea|| Faér. murina (Lec.) debilis (Lec. ) virgulata Lec. n. sp. linearis (Lec.) Pleuropompha Lec. costata (Lec.) Epicauta Redt.! puncticollis Mann. oblita (Lec.) maura (Lec.) pedalis Lec. n. sp. convolvuli Lec. Canth. atr. var. cony. Me/s. trichrus.— Meloe trichrus Pallas. pensylvanica Lec. Cantharis pens. DeGeer. Lytta atrata Fadr. C. atrata Olw. Meloe atra Pallas. L. coracina Tlliger. Meloe nigra Woodhouse. morio (Lec.) corvina (Lec.) fissilabris (Lec.) cinerea Lec. Meloe cin. Forster. L. marginata Fadr. Cantharis marg. Oliv, M. clematidis Woodhouse. nigritarsis (Lec.) maculata Lec. Lytta macul. Say. a. pardalis Lec. n. sp. 8. conspersa (Lec.) 1 This genus corresponds with Lytta Fairmaire, (DuVal, Gen. Col. Eur. iii, 432.) CEPHALOIDAE—OEDEMERIDAE. vittata Dej. Lytta vitt. Fadr. Cantharis vitt. Oliv. M. chapmani Woodhouse. lemniscata Dej. Lytta lemn. Fadr. ? lineata Dej.— Cantharis lin. Oliv. sanguinicollis (Lec.)— tenella (Lec.) strigosa De). Lytta strig. Schdnnerr. ferruginea Lec. Lytta ferr. Say. Canth. nigricornis Me/s. sericans Lec. n. sp- pruinosa Lec. n. sp. “callosa Lec. n. sp- Pyrota Lec. ({Chevr.) mylabrina Chevr. engelmanni (Lec.) terminata Lec. n. sp- postica Lec. n. sp. L. mylabrina 4 Lec. vittigera (Lec.) insulata (Lec.) germari Lec. Lytta germ. Hald. discoidea (Lec.) limbalis Lec. n. sp- afzeliana Dej.— Lytta afz. Fabr. Canth. sinuata Oliv. Pomphopoea Lec. polita Lec. Lytta pol. Say. var. L. femoralis Lec. _ gayi (Lec.) Canth. pyrivora Fitch. unguicularis Lec. n. sp. texana Lec. n. Sp- filiformis (Lec.) aenea Lec. Lytta aen. Say. L. nigricornis Lec. tarsalis Lec. Lytta tars. Bland. Lytta Fabr.! vulnerata Lec. cooperi Lec. cribrata Lec. reticulata Say. quadrimaculata Chevr. eucera Chevr. cardinalis Chevr. fulvipennis Lec. dichroa Lec. biguttata Lec. puberula Lec. n. sp. nitidicollis Lec. childii Lec. moerens Lec. melaena Lec. tenebrosa Lec. salicis Lec. an a seq. differt? cyanipennis Lec. nuttalli Say. var. fulgifera Lec. viridana Lec. n. sp. aeneipennis Lec. smaragdula Lec. stygica Lec. rathvoni Lec. lugens Lec. sphaericollis Say. chalybea Lec. convexa Lec. Calospasta Lec. elegans Lec. Epicauta el. Lec. VTegrodera Lec. erosa Lec. Eupompha Lec. fissiceps Lec. Phodaga Lec. alticeps Lec. Tetraonyx Latr. quadrimaculata Latr. Apalus quadr. Fabr. fulva Lec. Zonitis Fabr. atripennis Lec. Nemognatha atr. Say. flavida Lec. ? an praeced. var. 69 bilineata Say. var. lineata Mels. var. mandibularis Me/s. Nemognatha Ill. bicolor Lec. lurida Lec. apicalis Lec. pallens Lec. lutea Lec. dichroa Lec. dubia Lec. palliata Lec. piezata Lec. Zonitis piez. Fadr. Z. vittata Fadr. Nemognatha yitt. I//. texana Lec. decipiens Lec. punctulata Lec. flavipennis Uiler. nigripennis Lec. scutellaris Lec. nemorensis //entz. bimaculata Mels. cribraria Lec. immaculata Say. vittigera Lec. cribricollis Lec. porosa Lec.’ yar. fuscipennis Lec. Gnathium Kirby. francilloni Kirby.— minimum Say. longicolle Lec. Nemognatha long. Lec. flavicolle Lec. Nemognatha fl. Lec. CEPHALOIDAE. Cephaloon Newm. lepturides Newm. yar. varians Ha/d. OEDEMERIDAE. Calopus Fabr. angustus Lec. aspersus Lec. n. Sp. 1 This genus corresponds with Cantharis Fairmaire in DuVal, Gen. Col. Eur. iii, 431; Lagorina Muls., should probably be reunited with it. The differences do not appear to have generic value. 2 NV. calceolata Guér. Icon, R, An. 136, is not recognizable. 70 Microtonus Lec. sericans Lec. n. sp. Ditylus Fischer. coeruleus Hald. Upis coeruleus Rand. quadricollis Lec. consors Lec. gracilis Lec. vestitus Lec. obscurus Lec. Asclera obs. Lec Nacerdes Schmidt. melanura Schmidt. Cantharis mel. L272. Necydalis notata Fadr. Oed. analis Olzv. Oe. apicalis Say. Xanthochroa Schmidt. lateralis Lec. Nacerdes lat. Weds. Asclera lat. Hald. var. A. signaticollis Hadd. trinotata Lec. n. sp. Copidita Lec. quadrimaculata Lec. Probosea quadr. Motsch. Nacerdes quadr. Mann. Oxacis Lec. cana Lec. Asclera cana Lec. pallida Lec. Asclera pall. Lec. taeniata Lec. Asclera taen. Lec. thoracica Lec. Necydalis thor. Faér. Asclera thor. Hald. Oedem. fraxini Say. MYCTERIDAE—PYTHIDAE. notoxoides Lec. Necydalis not. Faér. Asclera not. Hald. granulata Lec. n. sp. § bicolor Lec. Asclera bic. Lec. fuliginosa Lec. n. sp. § dorsalis Lec. Nacerdes dors. Mels. Xanthochroa vittata Hald. Asclera dors. Lec. Probosca Schmidt. lucana Lec. n. sp. pleuralis Lec. n. sp. Asclera Schmidt. excavata Lec. ruficollis Hald. Oedemera ruf. Say. Ischn. carinata ewm. puncticollis Hald. Oedemera punct. Say. ? erythrocephala.— Oedemera erythr. Germ.' MYCTERIDAE. * MYCTERINI. Mycterus Clairv. concolor Lec. scaber Hald. LACCONOTINI. Lacconotus Lec. J punctatus Lec. n. sp. PYTHIDAE. PYTHINI. Pytho Latr. niger Kirby. americanus Kirby. ? Tenebr. depressus|| Faér. deplanatus Mann.— — strictus Lec. n. sp. Crymodes Lec. discicollis Lec. Priognathus Lec. monilicornis Lec. Dytilus mon. Randall. Pytho? sahlbergii Manz. Boros Herbst. unicolor Say. CONONOTINI. Cononotus Lec. sericans Lec. punctatus Lec. SALPINGINI. Salpingus Gyll. virescens Lec. Sphaeriestes vir. Lec. alternatus Lec. tibialis Lec. n. sp. elongatus Mann.— Rhimosimus Latr. pallipes Boh.— aeneirostris Mann. nitens Lec. un. sp. Tanyrhimus Mann. singularis J/ann.— 1 Ischnomera unicolor Mels. is a specimen of the European Asclera coerulea. I have not identified Dryops rufifrons Fabr., nor do I know to what genus or family it should be referred. Oedemera vestita Say, is perhaps a Stereopalpus, but cannot be properly identified, Abacidus, 9 Acanthocerini, 37 Acanthocerus, 37 Acephorus, 4 Acidota, 26 Acilius, 17 Acletus, 54 Acmeodera, 43 Acratrichis, 29 Acrepis, 58 Acritus, 28 Actenodes, 43 Acupalpus, 13 Acupalpus, 12, 13 Acylophorus, 23 Adelina, 53 Adelocera, 44 Adelops, 20 Adranes, 21 Adrastus, 47 Aegialia, 37 Aegialitidae, 64 Aegialites, 64 Aeolus, 46 Aepus, 13 Agabus, 17 Agaosoma, 12 Agathidium, 20 Agonoderus, 11 Agonothoraz, T Agonum, 7 Agrilini, 43 Agrilus, 43 Agriotes, 47 Agrypnini, 44 Agrypnus, 44 Alaus, 45 Aleochara, 22 Aleocharini, 22 Alindria, 31 Allecula, 64 Allezocnemis, 58 Allonyx, 54 Allopoda, 66 Allorhina, 40 Alobus, 38 Alphitobius, 62 Alphitophagus, 63 Altica, 50 Amara, 9 INDEX. Amartus, 29 Amblychila, 1 Ammodonus, 61 Ampedus, 45 Amphasia, 12 Amphicerus, 58 Amphichroum, 26 Amphicoma, 37 Amphicrossus, 30 Amphicyllis, 20 Amphicyrta, 34 Amphieyrtini, 34 Amphidora, 63 Amphizoa, 15 Amphizoidae, 15 Anachilus, 49 Anedus, 62 Anaspini, 66 Anaspis, 67 Anatrichis, 11 Anchastus, 46 Anchomenus, 6 Anchomma, 31 Anchytarsus, 50 Ancevrstronycha, 52 Ancylochira, 42 Ancyronyx, 35 Ancyrophorus, 26 Androchirus, 64 Anelastes, 44 Anepsiini, 59 Anepsius, 59 Antara, 63 Anillus, 14 Anisomera, 17 Anisodactylus, 12 Anisotoma, 20 Anisotomini, 20 Anisoxya, 66 Anobiidae, 56 Anobiini, 56 Anobium, 57 Anomoglossus, 10 Anomala, 39 Anophthalmus, 14 Anoplis, 42 Anorus, 50 Anthaxia, 42 Antherophagus, 33 Anthicidae, 64 Anthicini, 65 Anthicus, 65 Anthobium, 26 Anthobates, 66 Anthocomus, 53 Anthrenus, 34 Apalus, 69 Apate, 57, 58 Apatura, 42 Apenes, 6 Aphanisticus, 43 Aphanobius, 46 Aphanotus, 62 Apocrypha, 59 Apocryphini, 59 Aphodiini, 36 Aphodius, 36 Aphonus, 40 Aphotistus, 48 Aphricus, 49 Aplastus, 49 Apocellus, 26 Apristus, 5 Apsectus, 34 Apsena, 61 Apterospasta, 68 Aptinus, 4 Arseoschizus, 59 Ardistomis, 4 Argutor, 9 Arpedium, 26 Arrhenoplita, 62 Arthmius, 21 Arthromacra, 64 Artobium, 57 Asaphes, 49 Asbolus, 59 Asida, 59 Asididae, 59 Aslera, 70 Asidini, 59 Aspidoglossa, 4 Astrotus, 59 Atelestus, 54 Atemeles, 22 Ateuchus, 36 Athous, 48 Athyreus, 37 Atomaria, 33 Atomariini, 33 Atopa, 50 : Atractopterus, 48 Atranus, 11 Attagenus, 34 Attalus, 53 Auchmobius, 58 Aulonium, 31 Axinopalpus, 6 Bacanius, 28 Bactridium, 30 Bactrocerus, 65 Badister, 10 Baeocera, 29 Baptolinus, 24 Batrisus, 21 Batulius, 59 Bembidiini, 14 Bembidium, 14 Belonuchus, 24 Belionota, 43 Berosus, 18 Berginus, 34 Betarmon, 47 Bitoma, 31 Bius, 62 Bladus, 48 Blapstinus, 61 Blaptini, 60 Blauta, 45 Blechrus, 5 Bledius, 25 Blethisa, 2 Bolboceras, 37 Boletobius, 23 Boletophagini, 62 Boletophagus, 62 Boletophagus, 31, 59 Boletotherus, 62 Bomius, 5 Bonvouloiria, 33 Boros, 70 Bostrichidae, 57 Bostrichini, 57 Bostrichus, 57, 58 Bothriderini, 32 Bothrideres, 32 Bothriopterus, 9 Brachinini, 4 Brachinus, 4 (71) 72 Brachycopris, 36 Brachycrepis, 46 Brachymorphus, 56 Bruchynotus, 52 Brachypterini, 29 Brachys, 43 Brachystylus, 8 Bradycellus, 12 Bradytus, 10 Branchini, 59 Branchus, 59 Brathinidae, 20 Brathinus, 20 Brontes, 32 Broscini, 11 Bryoporus, 23 Bryaxis, 21 Buprestidae, 41 Buprestini, 41 Byrrhidae, 34 Byrrhini, 34 Byrrhus, 34 Byturidae, 34 Byturus, 34 Byturosomus, 54 Cacotemnus, 57 Caenia, 51 Caenoeara, 57 Caerosternus, 27 Calathus, 6 Callida, 6 Calopteron, 51 Calopus, 69 Calosoma, 2 Calospasta, 69 Calyptocephalus, 51 Calyptomerus, 20 Camptodes, 19 (note) Camptorhina, 38 Campylus, 48 Canifa, 66 Cantharis, 52, 68 Canthon, 36 Capnochroa, 64 Carabidae, 2 Carabini, 2 Carabus, 3 Carcinops, 28 Cardiophorus, 45 Carebara, 66 Carpophilini, 29 Carpophilus, 22 Casnonia, 5 Catogenus, 32 Catoptrichus, 20 Catops, 20 Catorama, 57 Cebrio, 49 Cebrionidae, 49 Cedius, 21 Celetes, 51 Celia, 10 Celina, 16 INDEX. Centrioptera, 59 Centronopus, 61 Ceophyllus, 21 Cephalistes, 53 Cephaloon, 69 Cephaloidae, 69 Cephennium, 21 Ceracis, 58 Cerenopus, 61 Cerandria, 62 Cerocoma, 53 Cerophytidae, 44 Cerophytini, 44 Cerophytum, 44 Ceruchus, 35 Cerylini, 32 Cerylon, 32 Cetonia, 40 Cetoniini, 40 Ceuthocerus, 28 Chaleolepidiini, 45 Chalcolepidius, 45 Chalcophora, 41 Chaleposomus, 1 Chalepus, 40 Chariessa, 56 Charopus, 54 Chauliognathini, 52 Chauliognathus, 52 Chlaeniini, 10 Chlaenius, 11 Choeridium, 36 Choleva, 20 Chorea, 44 Chromatia, 64 Chrysobothris, 42 Chrysophana, 43 Cibdelis, 61 Cicindela, 1 Cicindelidae, 1 Cicindelini, 1 Cioidae, 58 Cis, 58 Cistela, 64 Cistelidae, 64 Clambini, 20 Clambus, 20 Clavigeridae, 21 Cleridae, 54 Clerini, 54 Cleronomus, 55 Clerus, 55 Clivina, 4 Cnecus, 50 Cnemidotus, 15 Coelus, 59 Coelocnemis, 61 Colastus, 29 Colenis, 20 Collops, 53 Colobopterus, 36 Colon, 20 Colpius, 55 Colpodes, 6 Colydiidae, 31 Colydiini, 31 Colydium, 31 Colymbetes, 17 Colymbetini, 16 Colyphus, 16 Conibius, 61 Coniontini, 59 Coniontis, 60 Conipinus, 60 Cononotini, 70 Cononotus, 70 Conosoma, 23 Conotelus, 30 Copelatus, 16 Copidita, 70 Copris, 36 Coprini, 36 Coprobius, 36 Coproporus, 22 Coptodera, 6 Coptotomus, 16 Coraebus, 43 Corphyra, 65 Corticaria, 33 Corymbites, 48 Corynetes, 56 Coryphium, 26 Cotalpa, 40 Cotinis, 40 Coxelus, 31 Craniotus, 58 Cratacanthus, 11 Cratidus, 63 Cratocara, 11 Cratognathus, 11 Cratonychus, 47 Cregya, 56 Cremastochilus, 41 Creophilus, 23 Crepidotritus, 46 Crigmus, 47 Crossocrepts, 11 Crymodes, 70 Cryobius, 9 Cryptadius, 58 Cryptarcha, 30 Crypticini, 62 Crypticus, 62 Cryptobium, 24 Cryptoglossa, 95 Cryptoglossini, 59 Cryptophagidae, 32 Cryptophagini, 33 Cryptophagus, 33 Cryptopleurum, 19 Crytorhophalum, 34 Cteniopus, 64 Ctenistes, 21 Ctenicerus, 49 Ctenobium, 57 Ctenonychus, 47 Cucujidae, 32 Cucujini, 32 Cucujus, 32 Cupes, 56 Cupesidae, 56 Curtonotus, 10 Cybister, 18 Cybocephalus, 30 Cychramini, 30 Cychramus, 30 Cychrus, 3 guyotii, 78 Cyclinus, 18 Cyclocephala, 40 Cyclonotum, 19 Cylistix, 27 Cyllidium, 19 Cymatopterus, 17 Cymatodera, 54 Cymindis, 6 Cynaeus, 62 Cyparium, 29 Cyphon, 50 Cyphonidae, 50 Cyphonini, 50 Cyrtusa, 20 Cyrtomoptera, 53 Cysteodemus, 68 Cytilus, 54 Daenochilus, 25 Dacoderini, 59 Dacoderus, 59 Daptus, 11 Dascyllidae, 50 Dascyllus, 50 Dasydera, 37 Dasytes, 50, 54 Dasytini, 54 Dearthrus, 34 Deliphrum, 26 Delopygus, 63 Deltachilum, 36 Dendrocharis, 44 Dendroides, 64 Dendrophagus, 32 Dendrophilus, 28 Dermestes, 34 Dermestidae, 34 Derodontidae, 33 Derodontus, 33 Diacanthas, 48 Diachila, 2 Dianous, 25 Diaperini, 62 Diaperis, 62 Diaphorus, 5 Diazus, 38 Dicaelus, 10 Dicerea, 41 Dichelotarsus, 52 Dichelonycha, 38 Dichelonychini, 38 Dichirus, 12 Diclidia, 66 Dicrepidius, 46 Dictyalotus, 57 Dictyoptera, 51 Didetus, 6 Digrapha, 51 Dineutus, 18 Dinoderus, 58 Dinopsis, 22 Diochus, 24 Dioedus, 63 Diphyllidae, 34 Diplochila, 10 Diplotaxini, 38 Diplotaxis, 38 Diplocoelus, 34 Dircaea, 66 Discodemus, 60 Discoderus, 12 Discogenia, 60 Distemmus, 26 Ditemnus, 53 Ditoma, 31 Ditylus, 70 Dolerosomus, 48 Dolichosoma, 54 Dolopiosomus, 46 Dolopius, 47 Dorcatoma, 57 Doreus, 35 Drapetes, 44 Drapetini, 44 Drasterius, 46 Drepanus, 4 Dromius, 5 Dromochorus, 2 Dryptini, 5 Dynastes, 40 Dynastini, 40 Dyschirius, 3 — obesus, 78 Dysidius, 9 Dysmathes, 63 Dytiscus, 18 Dytiscidae, 13 Dytiscini, 17 Eanus, 48 Ebaeus, 54 Echiaster, 25 Ectinus, 46 Ectopria, 50 Edaphus, 25 Edrotes, 58 Ega, 5 Elaphrini, 2 Elaphrus, 2 Elasmocerus, 54 Elater, 45 Elateridae, 44 Elaterini, 45 Eleodes, 60 Ellipolampis, 51 Ellychnia, 51 Elmidae, 35 Elmis, 35 INDEX, Elodes, 50 Elosoma, 64 Emathion, 44 Embaphion, 60 Emmenastus, 58 Emmenotarsus, 54 Emmesa, 66 Empelus, 20 Enaphorus, 5 Enchodes, 66 Endecatomini, 57 Endecatomus, 57 Endectus, 32 Endeodes, 54 Endrosa, 38 Engis, 30 Ennearthron, 58 Enneatoma, 57 Enopliini, 55 Enoplium, 56 Epantius, 61 Epaphius, 14 Ephalus, 61 Epicauta, 68 Epiphanis, 44 Epiphysini, 58 Epistemus, 33 Epitragini, 59 Epitragus, 59 Epuraea, 30 Eripus, 3 Erirhipis, 40 Ernobius, 56 Eros, 51 Eschatocrepis, 54 Esthesopus, 45 Euaesthetus, 25 Eubriini, 50 Eucaerus, 5 Eucineti, 50 Eucinetus, 50 Euenemidae, 44 Eucnemis, 44 Eucrada, 56 Eucradini, 56 Eucyphus, 34 Eudesma, 31 Eudromus, 14 Eugastra, 38 Eugnathus, 4 Eulabis, 61, 62 Eulachus, 31 Eumerus, 43 Eumicrus, 20 Eunectes, 17 Eupactus, 57 Euparia, 36 Euphoria, 40 Euplectini, 21 Euplectus, 21 Eupleurida, 64 Eupompha, 69 Eupsenius, 21 Eurea, 50 Euryderus, 11 Eurygenius, 64 Eurymetopon, 58 Euryomia, 40 Eurypalpus, 35 Eurypogon, 50 Euryporus, 23 Euryptychus, 44 Eurytrichus, 12 Eusattus, 60 Euschides, 59 Eustrophus, 66 Eutheia, 2i Euthysanius, 49 Eutochia, 63 Evaniocerini, 67 Evarthrus, 8 Evolenes, 11 Evoplus, 63 Exops, 58 Falagria, 22 Faronus, 21 Formicilla, 65 Formicomus, 65 Fornax, 44 Galerita, 5 Gambrinus, 47 Geobuenus, 12 Geopinus, 11 Georyssidae, 35 Georyssus, 35 Geotrupes, 37 Geotrupini, 37 Gibbium, 56 Glaphyrini, 37 Glipa, 67 Glipodes, 67 Glycia, 6 Glyptoma, 27 Glyptotus, 61 Gnathium, 69 Gnathocerus, 62 Gnathoneus, 28 Gnorimus, 41 Graphoderus, 17 Gyascutus, 41 Gymnetis, 40 Gymnodus, 41 Gynandropus, 12 Gynandrotarsus, 12 Gynaptera, 52 Gynnis, 39 Gyretes, 18 Gyrinidae, 18 Gyrinus, 18 Gurohypnus, 24 Gyrophaena, 22 Hadrobregmus, 57 Hadromorphus, 48 Hadrotes, 23 Haliplidae, 15 Haliplus, 15 73 Hallomenus, 66 Hamotus, 21 Hapalorhinus, 53 Haplandrus, 61 Haplocentrus, 12 Haplochile, 11 Haploderus, 26 Haplostethini, 43 Haplostethus, 43 Haptoderus, 9 Harpalidae, 4 Harpalini, 11 Harpalus, 13 Helichus, 35 Heliopates, 61 Flelluo, 4 Helluomorpha, 4 Helluonini, 4 Flelobia, 2 Helochares, 19 Helodes, 50 Helophorini, T8 Helophorus, 18 Helopini, 63 Helops, 63 Hemicoelus, 57 Hemicrepidius, 49 Hemicyphon, 50 Hemipeplidae, 32 | Hemipeplus, 32 Hemiptychus, 57 Hemirhipini, 45 Hemirhipus, 45 Henous, 68 Hesperobaenus, 30 Hetaerius, 27 Heteroceridae, 35 Heterocerus, 35 Heterodromia, 32 Heterophaga, 62 Heterotarsini, 62 Heterothops, 23 Llispa, 62 Hister, 27 Histeridae, 27 Histerini, 27 Holeiophorus, 9 Hologlyptus, 59 Hololepta, 27 Hololeptini, 27 Holoparamecus, 33 Holotrichia, 39 Homalota, 22 Hoplandria, 22 Hoplia, 37 Hopliini, 37 Hoplocephala, 62 Horia, 68 Horistonotus, 45 Huloma, 62 Hyboma, 36 | Hybosorini, 37 | Hybosorus, 37 | Hydaticus, 17 74 Hydnobius, 20 Hydnocera, 55 Hydraena, 18 Hydrobiini, 18 Hydrobius, 19 Hydrocanthus, 16 Hydrocharis, 18 Hydrochus, 18 Hydrophilidae, 18 Hydrophilini, 18 Hydrophilus, 18 Hydroporini, 16 Hydroporus, 16 Hygrotus, 16 Hylochares, 44 Hylocoetus, 56 Hymenorus, 64 Hypherpes, 8 Hyphidrus, 16 Hypoeyptus, 22 Hypolithus, 45 Hypophloeini, 63 Hypophloeus, 31, 63 Hyporhagus, 64 Hypotelus, 27 Hypotrichia, 38 Hypulus, 66 Ichnea, 55 Ichthydion, 64 Ilybius, 17 Iphthimus, 61 Ipini, 30 Ips, 30 Trichroa, 3 Isarthrus, 44 Ischiodontus, 46 Isomalus, 27 Isomira, 64 Iulodini, 43 Laccobius, 19 Lacconotini, 70 Lacconotus, 70 Laccophilus, 16 Lachnocrepis, 11 Lachnophorus, 5 Lachnosterna, 38 Lacon, 45 Laemophloeus, 32 Lagarus, 8 Lagria, 64 Lagriidae, 64 Lamprias, 5 Lampyridae, 51 Lampyrini, 51 Lampyris, 50, 51, 52 Lara, 35 Laricobius, 56 Larini, 35 Lasconotus, 31 Lasioderma, 57 Lasiopus, 37 Lathridiidae, 33 INDEX. Lathridius, 33 Lathrimaeum, 26 Lathrium, 26 Lathrobium, 24 Lebasiella, 56 Lebia, 5 Lebiini, 5 Leistotrophus, 23 Leistus, 2 Leptacinus, 24 Leptolinus, 24 Leptotrachelus, 5 Lesteva, 26 Leucoparyphus, 22 Lichnanthe, 37 Licinini, 10 Ligyrus, 40 Limnichini, 35 Limnichus, 35 Limnius, 35 Limonius, 47 Liocnemis, 9 Liodes, 20 Lionota, 27 Liozoum, 56 Liparocephalus, 25 Lirus, 10 Lispinus, 27 Tassomus, 44 Listrochelus, 39 Listrus, 54 Litargus, 33 Lithocaris, 25 LIntochrus, 20 Litochrus, 29 Loberus, 32, 53 Lobiopa, 30 Lopha, 15 Lophoglossus, 9 Loricera, 2 Loricerini, 2 Loxandrus, 7 Lucanidae, 35 Lueanini, 35 Lucanus, 35 Lucernuta, 51 Lucidota, 51 Ludius, 46 Lutrochus, 35 Lycini, 51 Lyctidae, 58 Lyctus, 58 Lycus, 51 Lygerus, 53 Lygustopterus, 51 Lymexylidae, 56 Lymexylon, 56 Lymnaeum, 14 Lyperus, 9 Lyrosoma, 20 Lytta, 69 Lyttini, 68 Macrarthria, 65 Macratria, 65 Macratriini, 65 Macrobasis, 68 Macrodactylini, 38 Macrodactylus, 38 Macronychus, 35 Macrophyllini, 39 Macropogon, 50 Macropogonini, 50 Macrosiagon, 67 Macrotelus, 54 Malachidae, 53 Malachini, 53 Malachius, 53 Malthacus, 52 Malthinus, 53 Malthodes, 53 Manticorini, 1 Margarinotus, 27 Marginus, 34 Margus, 62 Marolia, 66 Matus, 16 Megacephata, 1 Megacephalini, 1 Megadeuterus, 53 Megalops, 25 Megalostylus, 7 Megapenthes, 46 Megarthrus, 26 Megasoma, 40 Megasternum, 19 Megetra, 68 Meladema, 17 Melanactes, 49 Melandriini, 66 Melandrya, 66 Melandryidae, 66 Melanophila, 42 Melanotus, 11 Melanotus, 47 Meloe, 68 Meloidae, 68 Meloini, 68 Melolonthidae, 37 Melolonthini, 38 Melasini, 44 Melasis, 44, 50 Meligethes, 30 Melyris, 54 Meracantha, 63 Meracanthini, 63 Merinus, 61 Metabletus, 5 Metaclisa, 63 Metonius, 44 Metriini, 3 Metrius, 3 Mezium, 56 Micralymma, 26 Micrixys, 4 Microcara, 50 Microlipus, 54 Micropeplidae, 27 Micropeplus, 27 Microphotus, 52 Microrhagus, 44 Microseapha, 66 Microschatia, 59 Microstemma, 20 Microtonus, 70 Miscodera, 11 Molops, 8 Molorchus, 53 Molosoma, 25 Monocerus, 65 Monocrepidius, 46 Monommidae, 64 Monophylla, 54 Monotoma, 30 Monotomidae, 30 Mordella, 67 Mordellidae, 66 Mordellistena, 67 Morio, 4, 11 Morionini, 4 Murmidiidae, 28 Murmidius, 28 Myas, 9 Mycetochares, 64 Mycetophagidae, 33 Mycetophagus, 33, 63, 66 Mycetophila, 64 Mycetoporus, 23 Mycteridae, 70 Mycterini, 70 Mycterus, 70 Myllaena, 22 Myodites, 68 Myoditini, 68 Myrmedonia, 22 Nacerdes, 70 Narthecius, 32 Nausibius, 32 Neatus, 62 Nebria, 2 WNecrobia, 56 Necrodes, 19 Necrophila, 20 Necrophilus, 20 Necrophorus, 19 Necydalis, 70 elites, 63 Nematidium, 31 Nematodes, 44 Nematoplus, 64 Nemicelus, 32 Nemognatha, 69 Nemosoma, 31 Nemotarsus, 5 Neobium, 57 Neomida, 63 Nicagini, 37 Nicagus, 37 Nicobium, 57 Niptus, 56 Nitidula, 30 Nitidulidae, 29 Nitidulini, 30 Nomaretus, 3 Nomaspis, 68 Nomophloeus, 30 Noserus, 59 Nosodendron, 34 Nosodendridae, 34 INosoderma, 59 Nosodes, 31 Notaphus, 14 Noterini, 16 Noterus, 16 Nothodes, 48 Nothopus, 11 Nothus, 66 Notibius, 61 Notiophilus, 2 Notoxus, 55, 65 Nyctobates, 61 Nyctoporini, 59 Nyctoporis, 59 Ochina, 50 Ochodaeus, 37 Ochthebius, 18 Ochthedromus, 14 Ocypus, 24 Odacanthini, 5 Odontaeus, 37 Odontium, 14 Odontomus, 42 Odontonyx, 50 Ocedemera, 70 Oedemeridae, 69 Oedostethus, 45 Oestodes, 48 Oiceoptoma, 20 Olibrus, 29 Oligomerus, 56 Olisthaerus, 26 Olisthopus, 7 Olophrum, 26 Omala, 15 Omalium, 26 Omalini, 26 Omalisus, 51 Omalodes, 27 Omaseus, 9 Omethes, 52 Omophron, 2 Omophronini, 2 Omorgus, 37 Omosita, 30 Omus, 1 Oncerini, 37 Oncerus, 37 Onitis, 36 Onthophagus, 36 Onthophilus, 27 Onychodon, 44 Oochila, 59 Oodes, 11 INDEX. Oophortus, 46 Opatrini, 61 Opatrinus, 60 Opatrum, 61 Opetiopalpus, 56 Ophonus, 12, 13 Opilus, 55 Opisthius, 2 Orchesia, 66 Oripa, 53 Orphilus, 34 Orphnini, 37 Orthopleura, 56 Orthostethus, 46 Orsonyx, 38 Osmoderma, 41 Osorius, 25 Othius, 24 Othniidae, 33 Othnius, 33 Oxacis, 70 Oxygonus, 48 Oxylaemus, 31 Oxyomus, 36 Oxypoda, 22 Oxyporus, 25 Oxytelini, 25 Oxytelus, 26 Ozaenidae, 4 Ozognathus, 56 Pachylopus, 28 Pachyurgus, 61 Pactostoma, «9 Paederini, 24 Paederus, 25 Palaminus, 25 Pallodes, 20, 30 Panagaeini, 4 Panagaeus, 4 Pandarus, 62 Pangus, 12 Paramecosoma, 33 Paratenetus, 62 Parnidae, 35 Parnini, 35 Paromalus, 28 Pasimachus, 3 Passalidae, 35 Passalus, 35 Passandridae, 32 Patrobus, 13 Paussus, 53 Pedetes, 48 Pediacus, 32 Pedilini, 64 Pedilophorus, 34 Pedilus, 65 Pedinini, 60 Pedinus, 60 Pelecotoma, 67 Pelecyphorus, 59 Pelidnota, 40 Pelonium, 56 | Pelonomus, 35 Pelophila, 2 Pelosoma, 19 Peltastica, 31 Peltasticidae, 31 Peltidae, 31 Peltis, 31 Pentaphyllus, 62 Pentaria, 66 Penthe, 66 Percus, 9 Pericompsus, 15 Perilypus, 54 Perimecus, 47 Peristethus, 9 Perothopini, 44 Perothops, 44 Peryphus, 14 Petaliuin, 57 Phalacridae, 29 Phalacrus, 29 Phanaeus, 36 Phaiona, 66 Phaleria, 62 Phaleriini, 62 Phausis, 52 Phelister, 27 Phellidius, 62 Phellopsis, 59 Phengodes, 52 Phengodini, 52 Phenolia, 30 Phileurus, 40 Philhydrus, 19 Philodes, 13 Philonthus, 24 Philophuga, 6 Philotecnus, 6 Philotermes, 22 Philothermus, 32 Philoxylon, 56 Phlegon, 44 Phloeodes, 59 Phloeocharini, 26 Philoeonaeus, 26 Phloeopora, 22 Phloeopterus, 26 Philoeotrya, 66 Phobetus, 39 Phodaga, 69 Photinus, 51 Photuris, 51 Phryganophilus, 66 Phyconomus, 30 Phylethus, 63 Phyllobaenus, 55 Phyllophaga, 39 Physemus, 35 Phytosus, 22 Piesmus, 9 Piestidae, 26 Pimelia, 58, 60 Pinacodera, 6 Pinophilus, 25 75 Piosoma, 11 Pityobius, 48 Pityophagus, 30 Placusa, 22 Plastocerini, 49 Plastocerus, 49 Platycerus, 55 Platydema, 63 Platyderus, 8 Platynus, 6 Platysma, 9 Platysoma, 27 Platystethus, %6 Plegaderus, 28 Pleocoma, 387 Pleocomini, 3¢ Pleotomus, 51 Pleuropompha, *8 Plochionus, 5 Plusiotis, 40 Pocadius, 30 Podabrus, 52 Poecilus, 8 Poecilonota, 42 Pogonini, 13 Pogonocerus, 64 Polemius, 53 Pollaclasis, 51 Polyeaon, 58 Polycesta, 45 Polymoechus, 40 Polyphylla, 39 Polypleurus, 61 Pomphopoea, 69 Porrhodites, 26 Prateus, 63 Priocera, 59 Priognathus, 70 Prionocyphon, 50 Prionychus, 64 Pristilophus, 49 Pristodactyla. 6 Pristoscelis, 54 Probosea, 70 Prognatha, 26 Promecognathini, 3 Promecognathus, 3 Prometopia, 30 Promus, 60 Prosternon, 48 Proteinini, 26 Proteinus, 26 Prothalpia, 66 Protheea, 57 Psammodius, 37 Pselaphidae, 21 Pselaphini, 21 Pselaphus, 21 Psephenidae, 35 Psephenus, 35 Pseudochina, 57 Pseudoclerus, 55 Pseudomorphini, 4 Pseudomorphus, 4 76 Pseudophanini, 32 Pseudophanus, 32 Psilocnemis, 41 Psiloptera, 41 Psilopyga, 30 Psiloscelis, 27 Psoini, 58 Psorades, 63 Psydrus, 11 Ptenidium, 29 Pteroloma, 20 Ptervustichini, 6 Pterostichus, 8, 9 Pterotus, 52 Ptilinini, 57 Ptilium, 29 Ptilinus, 50, 57 Ptilodactyla, 50 Ptilodactylini, 50 Ptinella, 29 Ptinidae, 56 Ptinini, 56 Ptinodes, 57 Ptinus, 56 Ptosima, 43 Pyenomerini, 32 Pyenomerus, 32 Pyrectomena, 51 Pyrectosoma, 51 Pyrochroa, 64 Pyrochroidae, 64 Pyrophorus, 49 Pyropyga, 51 Pyrota, 69 Pythidae, 70 Pythini, 70 Pytho, 70 Quedius, 23 Rembus, 10 Rhadalini, 54 Rhadalus, 54 Rhadine, 6 Rhaeboscelis, 43 Rkagodera, 31 Rhagonycha, 52 Rhantus, 17 Rhexius, 21 Rhinandrusg, 61 Rhinosimus, 70 Rhipicera, 50 Rhipicerini, 50 Rhipidandrus, 62 Rhipiphorus, 67 Rhipiphoridae, 67 Rhizophagini, 30 Rhizophagus, 30 Rhizopertha, 58 Rhombodera, 6 Rugilus, 25 Rhyssemus, 37 Rhyssodes, 32 Rhyssodidae, 32 INDEX. Rutelini, 39 Sacodes, 50 Salpingini, 70 Salpingus, 70 Sandalus, 50 Saprinus, 28 Scalopterus, 53 Scaphidema, 63 Scaphidiidae, 29 Scaphidium, 29 Scaphinotus, 3 Scaphiodactylus, 7 Seaphisoma, 29 Scaphium, 29 Scaptolenus, 49 Scarabaeidae, 36 Searites, 3 Searitini, 3 Schizogenius, 4 Schizopodidae, 50 Schizopus, 50 Schizotus, 64 Schoenicus, 59 Sclerodes, 50 Scolytus, 2 Scopaeus, 25 Scotobaenus, 61 Scraptia, 66 Scraptiini, 66 Scydmaenidae, 20 Scydmaenus, 20 Scyrtes, 50 Selenophorus, 13 Serica, 38 Sericini, 38 Sericoda, 7 Sericoidini, 38 Sericosomus, 48 Serropalpus, 66 Silenws, 44 Silis, 53 Silpha, 19 Silphidae, 19 Silphini, 19 Simplocaria, 34 Sinodendron, 35 Sinoxylon, 57 Sitodrepa, 57 Sitophagus, 63 Sosylus, 32 Spercheus, 19 Sperchopsis, 19 Sphaeritini, 20 Sphaeridiini, 19 Sphaeridium, 19 Sphaertestes, 70 Sphaeroderma, 28 Sphaeroderus, 3 Sphaeromorphus, 37 Spheracra, 5 Sprlota, 40 Spilotus, 66 Sphindidae, 58 Sphindus, 58 Spongopus 12 Staphylinidae, 22 Staphylinini, 23 Staphylinus, 23 Statira, 64 Stelidota, 30 Stene, 62 Stenelmis, 35 Stenini, 25 Stenochia, 64 Stenochidus, 64 Stenocolus, 50 Stenolophus, 13 Stenomorphus, 12 Stenosini, 59 Stenotrachelini, 66 Stenotrachelus, 66 Stenotrichus, 63 Stenors, 11 Stenuris, 41 Stenus, 25 Stenusa, 22 Stephanucha, 41 Stereocerus, 10 Stereopalpus, 65 Sternuchus, 20 Steropus, 9 Stethoxus, 18 Stzgmatoma, 64 Stilicopsis, 25 Stilicus, 25 Strategus, 40 Strigoderma, 40 Strongyliini, 63 Strongylium, 63 Stylopidae, 68 Stylops, 68 Sunius, 25 Suphis, 16 Sylvanidae, 32 Sylvanus, 32 Symphora, 66 Syncalypta, 35 Synchita, 31 Synchitini, 31 Synchroa, 66 Syntomium, 26 Tachinus, 22 Tachyporini, 22 Tachyporus, 23 Tachypus, 5 Tachyta, 15 Tachys, 15 Tachyusa, 22 Tanaops, 53 Tanarthrus, 65 Tanyrhinus, 70 Taphrocerus, 43 Tarsostenus, 55 Tegrodera, 69 Telephanini, 32 Telephanidae, 32 Telephanus, 32 Telephoridae, 52 Telephorini, 52 Telephorus, 52 Telmatophilini, 32 Telmatophilus, 32 Temnochila, 31 Teretrius, 28 Tenebrionidae, 58, 60 Tenebrionini, 61 Tenebrio, 61 Tentyriidae, 58 Tentyriini, 58 Tetracha, 1 Tetragonoderus, 5 Tetratoma, 33, 66 Tetratomini, 66 Tetraonyx, 69 Teuchestes, 36, Thalpius, 5 Thanasimus, 55 Thaneroclerus, 55 Thanatophilus, 20 Tharsus, 62 Theca, 57 Thermonectes, 17 Thinopinus, 23 Thrincopyge, 43 Thrincopygini, 43 Throscidae, 44 Throseini, 44 Throseus, 44 Thyce, 39 Thymalus, 31 Thyreopterus, 5 Tillus, 54 Tmesiphorus, 21 Tomarus, 33 Tomicus, 57 Tomoderus, 65 Tomoxia, 67 Tostegoptera, 39 Toxidium, 29 Trachypachini, 2 Trachypachys, 2 Trachyscelini, 62 Trachyscelis, 62 Trechini, 14 Trechicus, 5 Trechus, 14 Triaena, 10 Tribrachys, 29 Tribalus, 27 Tribolium, 62 Trichesthes, 39 Trichius, 41 Trichocanthus, 23 Trichochrous, 54 Trichodesma, 57 Trichodes, 55 Trichopteryx, 29 Trichopterygidae, 29 Tricrepidius, 46 Trigonodemus, 26 Trigonogenius, 56 Trigonopeltastes, 41 Trigonophorus, 23 Tricrania, 68 Trimium, 21 Trimytis, 58 Triorophus, 58 Triphalus, 58 Triphyllus, 33 Triplectrus, 12 Trogini, 37 Trogoderma, 34 Trogophloeus, 26 Trogosita, 31,61 Trogositidae, 31 Trogoxylon, 58 Tropisternus, 18 | Trotomma, 66 Trox, 37 Trypherus, 53 Trypopitys, 57 Tychus, 21 Tylistus, 57 Typhaea, 34 | Tyrus, 21 | Tytthonyx, 53 | Uloma, 62 INDEX. | Ulomini, 62 Ulosonia, 62 Upis, 61 Valgus, 41 Volvulus, 19 _Xanthochroa, 70 | Xantholinus, 24 | Xenos, 68 | Xestobium, 56 | Xestonotus, 12 | Xylotrogus, 58 | Xyletinus, 57, 62 | Xylita, 66 Xylophilini, 65 Xylophilus, 65 Xylopinus, 61 Xyloryctes, 40 Xylotrogus, 32 Xystropus, 64 Zenoa, 50 Zenoini, 50 Zilora, 66 Zonitis, 69 Zopherini, 59 | Zopherus, 59 | Zuphium, 5 17 ADDITIONS p. 2. Bietinisa Bon. oregonensis Lec. acutangula Chaud. Calosoma Fabr. after prominens. lugubre Lec. p. 3. Carabus Linn. maeander /’scher. lapilayi Lap. Cychrus Fabr. § SPHAERODERUS Dej. brevoorti Lec. granulosus Chaud. canadensis Chaud.— § IntcHrRoA Newm. guyotii Lec. andrewsii Harris. germari Chad. ridingsii Bland. Pasimachus Bon. duplicatus Lec. var. costifer Lee. Dyschirius Bon. abbreviatus Putz.— obesus Lec. p. 9. Pterostichus Bon.) mutus Lec. Feronia polita Harris. p- 10. § Srereocervs Kirby. haematopus Lec. Feronia haem. Dej. | Ster. similis Kerby. | p. 11. Miscodera Esch. hardyi Chaud.— p. 12. Amisodactylus) Dej. dylcicollis Lec. Harpalus dule. Ferté. An. ellipticus Lec. Bradycellus Er. dele ‘obesulus Lec. p. 13. Harpalus Latr. (after ellipsis.) obesulus Lee. Bradycellus ob. Lee. dele dulcicollis Ferté. Stemolophus Dej. carbonarius Grillé. Harpalus carb. Dej. p- 14. Anophthal- mas Sturm. striatus Motsch.— menetriesii Motsch.— ventricosus Moisch.— before Bembidium. Vachypus Lac. elongatus J/otsch.— Bem bidiumn Latr. after inaequale. glabriusculum Motsch.— p.19. Plhillhydrus Sol. before ochraceus. consors Lec. n. sp. Necrophorus Fabr. sayi Laporte. lunatus Lec. p- 20. Catops Fabr. after cryptophagoides. pusio Lec. p. 21. Batrisus Aubé. dele aculeatus Lec. n. sp. p. 22. after Gyrophaena. AND CORRECTIONS. Agaricochara Kraatz. geniculata Lec. Gyrophaena gen. Miiklin. Aleochara Grav. pallitarsis Airby.— p. 28. Plegaderus Er. transversus /7. Hister transv. Say. p. 30. after Lobiopa. Soromia Er. guttulata Lec. n. sp. Lobiopat gutt. Lec. Rhizophagus Herbst. bipunctatus Lec. Colydium bip. Say. dele Pityophagus. p- 3). Heterocerus Fabr. undatus Je/s. brunneus Jels. p. 40. Cyclocephala Latr. immaculata Burm. lurida Bland. p- 44. Drapetes Redt.! dele ? Dr. niger Bonv. dele plagiatus.— p. 45. before CHALCOLEPIDIINI. Meristhus Cand. scobinula Cand. p.48. Corymbites Lat. nigricollis Bland.— nebraskensis Blund.— 1 D. plagiatus Boh., according to Bonvouloir, is a Brazilian species, identical with D. praeustus Bony. Norse.—-The following species of Tachys have been described by Motschulsky, Etudes Entom. 1862: Tachyura brunnicollis ; Tachys aeneipennis ; Tachymenis reflexicollis, marginicollis ; Poly- deris testaceolimbata, glabrella. Corrections in synonymy and additions from works published during the printing of this list are not noticed on this page; all such will be contained in an appendix, to be prepared when the re- maining part of the list is ready for the press, ( 78 ) SMITHSONIAN MISCELLANEOUS COLLECTIONS, 167 NEW SPECIES NORTH AMERICAN COLEOPTERA. PREPARED FOR THE SMITHSONIAN INSTITUTION BY SOHN ay LECONTEH, M.D: PART I. WASHINGTON: SMITHSONIAN INSTITUTION: MARCH, 1863.—APRIL, 1866, ADVERTISEMENT. TueE following work is intended as a companion to the “ List of the Coleoptera of North America,” by Dr. LeConte. It contains the descriptions of the new species named by him in Part I of the “ List,” which embraces the families treated of in Part I of the Classification of the Coleoptera of North America. The three works having been thus brought to the same point, it is the intention of Dr. LeConte to complete the series as soon as practicable. Pages 1—86 were published in March, 1863; pp. 87—168 in April, 1866. JOSEPH HENRY, Secretary S. I. SmirHsoniAn InstiTvTION, Wasuinerton, April, 1866. PHILADELPHIA: COLLINS, PRINTER. DESCRIPTIONS OF NEW SPECIES. CICINDELA Linx. 1. C. hyperborea. Supra obscure cuprea, fronte utrinque subtiliter striata parce pilosa, thorace subquadrato, convexiusculo, dense minus subtiliter rugoso, lateribus albopilosis, elytris pone basin paulo latioribus, granulatis punctatis, ad apicem rotundatis serrulatis, spina suturali prominula; lunula humerali postice oblique prolongata, fascia media obtuse refracta postice obliqua, margineque ante apicem paulo dilatato, latis albis: subtus viridiznea, lateribus pilosis, labro brevi 1-dentato, palpis labialibus sexus utriusque articulo penultimo pallido. Long. °45. Mas palporum maxillarium articulo 2ndo apice pallido. Methy Portage, Hudson’s Bay Territory; Mr. R. Kennicott. This species belongs to the same group with C. repanda, &c., but differs from all the species known to me by the markings. The white lines are all very broad, and arranged as follows: the humeral lunule commences at the base, extends along the margin, and then runs obliquely inwards, sometimes so as to touch the angle of the middle band; behind the lunule is a white margin, which extends to the tip, obtusely dilated near the tip, where it represents the apical lunule; the middle band arises perpendicu- larly from the white margin, bends backwards at an obtuse angle, runs obliquely nearly to the suture, and ends opposite the dilatation of the white margin; the hind part of the band is straight and gradually clavate. The elytra of the two sexes do not differ in form. In one specimen the marginal line is interrupted in front of the apical lunule, which thus becomes isolated. ELAPHRUS Fapr. 2. E. olivaceus. Olivaceus, nitidus, capite thoraceque haud dense subtiliter auro-punctulatis, fronte convexa medio foveata, thorace lati- tudine fere longiore profunde impresso, antice posticeque angustato, lateribus rotundatis postice longe sinuatis, disco utrinque foveato, ely- tris foveis ocellatis solitis purpureo-tinctis, ad latera et apicem subtiliter 1 2 DESCRIPTIONS OF NEW SPECIES. haud dense punctulatis; pectoribus dense punctatis, pedibus testaceis, femoribus viriditinctis. Long. ‘27. Catskill Mountains, New York; Mr. Ulke. Resembles in form and appearance LZ. politus and L. levigatus, but differs from both by the color, as well as by the fine golden punctures which cover the head, thorax, margin and tip of the elytra, and also by the more Gense punctures of the breast. BLETHISA Boy. 3. B. julii. Supra nigro-enea cupreo-tincta, thorace punctato, latitu- dine breviore, lateribus rotundatis, angulis posticis obtusis subcarinatis, medio sublevi, linea dorsali haud profunda, basi utrinque impresso, margine laterali latiusculo reflexo, elytris thorace latioribus, oblongis, seriatim punctatis, interstitiis 3io et 5to latioribus foveis majusculis interruptis ; subtus nigra. Long. -45—-47. Nova Scotia; Mr. Ulke. The interruption of the 3d and 5th intervals produce a catenated appearance: there are five fovez on the 3d, and three on the 5th interval; the 7th interval is more elevated than the adjoining ones, but not interrupted. I take great pleasure in dedicating this beautiful species to my accomplished friend, Mr. Julius Ulke, whose labors in the field with his brother, Henry Ulke, have produced much advantage to science. DIACHIEILA Morscx. 4. D.subpolaris. Obscure enea nitida, capite thoraceque modice punctatis, fronte medio fovea parva impressa, thorace latitudine paulo breviore postice angustato, lateribus antice rotundatis, postice sinuatis, angulis posticis rectis carinatis, basi utrinque profunde impresso, elytris elongatis thorace paulo latioribus, striis punctatis haud impressis, inter- stitio.3io tripunctato; subtus cum pedibus nigra. Long. °35. Hudson’s Bay; Mr. Ulke. Allied to the European D. arctica, but differs by the thorax being more narrowed behind, and by the elytra being less dilated, and almost parallel. The genus Diachila is not mentioned in the first part of my classification, as it was not known to be represented in our fauna at the time the work was published. It differs from Blethisa by the last joint of the maxil- lary palpi being elongated as in Elaphrus; and from Elaphrus by the eyes being small, as in Blethisa, and the elytra striate, without large fovere. It appears to me fully entitled to rank as a distinct DESCRIPTIONS OF NEW SPECIES. 3 genus, although it is not received as such by many European ento- mologists. LORICERA Larr. o. L. califormica. Aeneo-nigra nitida, thorace latitudine breviore, lateribus rotundatis, anguste reflexis, postice vix obsolete sinuatis, an- gulis posticis obtusis haud rotundatis, elytris subtiliter striatis, striis antice parce punctulatis, externis fere obliteratis, interstitio 3io trifo- veato. Long. °32. San Francisco, California. Very nearly related to Z. sem#- punctata, but differs by the much finer striw of the elytra being not punctured, except quite near to the base, and by the lateral margin of the thorax being narrower. 6. L. meoscotica. Aeneo-nigra nitida, thorace latitudine fere sesqui breviore, lateribus rotundatis refiexis, angulis posticis obtusis subro- tundatis, elytris striis usque ad dodrantem fortiter punctulatis, inter- stitio 3io trifoveato ; tibiis tarsisque obscure testaceis. Long. *33. Nova Scotia; Mr. Ulke. Also related to LZ. semipunctata, but differs by the thorax being more transverse, and by the hind angles being more obtuse and almost rounded. NEBRIA Lartr. 4%. N. hudsomica. Nigra nitida, thorace latitudine duplo breviore, postice angustato, lateribus marginatis antice rotundatis, postice oblique sinuatis, angulis anticis rotundatis, posticis rectis vix prominulis, linea dorsali profunda, basi profunde, antice modice impresso, elytris oblongis, striis punctulatis, interstitio 3io quadripunctato. Long. ‘41. Saskatchewan, Hudson’s Bay Territory. Closely resembles WV. moesta Lec., but differs by the sides of the thorax being less sinu-, ate, with the hind angles less prominent. . 8. N. rudis. Aeneo-nigra, nitida, thorace latitudine sesqui breviore, postice paulo angustato, lateribus marginatis antice rotundatis, postice subsinuatis, angulis posticis rectis, apice et basi punctato, et profunde impresso, linea dorsali haud profunda; elytris striis vage foveatis et interruptis, interstitiis paulo convexis, 3io foveis 4 vel 5, Sto unica notatis. Long. *44. Methy, Mr. Kennicott: one specimen. Resembles in form J. Eschscholizii, but differs by the strive of the elytra being interrupted and having large but not deep punctures; the thorax is also less uarrowed behind, and less sinuate on the sides. 4 DESCRIPTIONS OF NEW SPECIES. A specimen from Washington Territory, in Mr. Ulke’s collec- tion, resembles the one described above, except that the sides of the thorax behind are still more feebly sinuate. Iam unwilling, at present, to consider it as indicating another species. CYCHRUS Fasnr. 9. C. vielaceus. Saturate violaceus, thorace latitudine haud bre- viore, postice oblique angustato, lateribus late refiexo-marginatis, elytris veutricosis, anguste marginatis, latitudine sesqui longioribus, striis con- fertis punctatis. Long. -70. Mountains of Georgia. This species at first sight resembles C. andrewsti, but is immediately distinguished by the thorax being more broadly margined, and by the elytra being more rounded. It resembles in miniature C. viduus, but the margin of the elytra, especially towards the base, is not so strongly reflexed, and the antenne are more elongated ;* it seems to be the last term in the series of forms by which C. wnicolor is related to C. andrewsit. DYSCHIRIUS Bon. 10. D. hispidus. Aeneo-niger nitidus, clypeo emarginato bidentato, fronte transversim impressa, thorace latitudine breviore, ovato, elytris convexis striis antice grosse punctatis, postice obliteratis, interstitiis alternis punctis setiferis minutis uniseriatis notatis, antennis pedibusque testaceis, tibiis anticis dente inferiore acuto, superioreque obsoletissimo armatis. Long. °12. Western States; Mr. Ulke. Of the same size and shape as D. setosus, but differs by the inner striz of the elytra being distinetly impressed, and by the punctures being still larger. ‘ CLEIVINA Larr. 11. C. texama. Elongata, rufo ferruginea nitida, epistomate truncato, dentibus utrinque duobus parvis armato, lobis oblique retractis, impres- sionibus frontalibus elongatis, vertice profunde sulcato et subtiliter punc- tato, thorace latitudine haud breviore, paulo convexo, lateribus parallelis, angulis posticis acutis dentiformibus, elytris cylindricis, striis profundis subtiliter punctulatis, interstitio 3io tripunctato, tibiis anticis tridentatis. Long. °25. Texas; Mr. 8S. B. Buckley. Belongs to the group with the front femora not toothed, and the middle tibiee with a spine near the tip on the outer margin; the bristle-like paronychium is as cra * DESCRIPTIONS OF NEW SPECIES, 5 long as the claws. It is intermediate between C. impressifrons and C. planicollis. SCHIZOGENIUWS Porzeys. 12. 8S. planulatus. Rufo-purpureus nitidus, depressus, thorace la- titudine sublongiore antrorsum perparum angustato, lateribus vix rotun- datis, angulis posticis minutis vix distinctis, elytris striis punctulatis, interstitiis 3io et 5to multipunctatis. Long. +23. New York; Mr. Ulke. A little larger than S. lineolatus, but as much flattened as S. amphibius, and differing from both by the very finely punctured elytral striz. LEBIA Larr. 13. L. atriceps. Capite nigro-piceo, vix rugose punctulato, thorace transverso, rufo-testaceo, ruguloso, lateribus late marginatis, elytris nigrocyaneis, subtiliter striatis, interstitiis planis, stria 3ia bipunctata ; abdomine nigerrimo, metasterno szpe, tibiis tarsis palpis antennisque piceis, his articulis tribus primis testaceis, femoribus rufo-testaceis, apice obscuris. Long. :25—-30. Nebraska; Mr. Ulke. Of the same size and form as JZ. atr?- ventris; as in that species, the first three joints of the anterior tarsi of the male are obliquely dilated. The metasternum in one specimen is dark, in another rufo-testaceous. 14. L. lobulata. Pallide testacea, capite nigro, parce punctato, tho- race nigro, latitudine paulo breviore, postice paulo angustato, angulis posticis subrectis, margine laterali pallido, elytris modice striatis, nigris limbo laterali angusto, macula magna lobata humerali, apiceque late pallidis. Long. -12—:15. Ohio and Louisiana; Mr. Ulke. Resembles at first sight Z. axillaris, but the humeral spot, instead of being simply triangular as in that species, is lobed, with the inner and posterior outlines emarginate, resembling some of the varieties of Z. fuscata. The head is also distinctly though sparsely punctured, as in Z. pul- chella, while in Z. axillaris it is smooth. PLOCHIONWS De. 15. P. valens. Longiusculus, rufo-piceus, nitidus, thorace latitudine vix sesqui breviore, apice paulo angustiore, lateribus marginatis rotun- datis, postice obliquis, angulis posticis obtusis, elytris oblongis striatis, interstitiis paulo convexis, 3io bipunctato. Long. ‘40, 6 DESCRIPTIONS OF NEW SPECIES, Pennsylvania; Rev. D. Ziegler: Tampico, Mexico; Mr. H. Haldeman. Larger and narrower than P. timédus, with the tho- rax less transverse, and more quadrate, being only a little narrower at the apex than at the base: the sides of the thorax are not broadly depressed as in the other species, but only moderately margined. BLECHWRUS Morscu. 16. B. pusio. Elongatus, nigro-eneus, thorace latitudine haud bre- viore, trapezoideo, postice angustato, lateribus antice paulo rotundatis postice vix sinuatis, angulis posticis obtusis haud prominulis, elytris thorace latioribus stria suturali obsoleta notatis. Long. :05. Louisiana; Mr. Ulke. Much smaller than B. ducidus, with tie sides of the thorax less rounded, and the hind angles more obtuse, than in any of our other species. TETRAGONODERUWS Ds.. 17. T.undulatus. Subtus testaceo-piceus, capite thoraceque nigro- viridibus subnitidis, hoc latitudine sesqui breviore, trapezoideo, lateribus antice rotundatis postice obliquis, angulis posticis obtusis haud rotun- datis, planiusculo, linea dorsali profunda, basi utrinque vage impresso, elytris irregulariter nigrow#neo-variegatis fascia, antica et postica inter- ruptis pallidis relictis, antennis palpis pedibusque pallidis. Long. °21. Cape San Lucas, Lower California; Mr. Xantus. This species has precisely the same elytral markings as 7. fasctatus, but the thorax is broader, flatter, and the basal impressions are much less deep. CWMEINDIS Later. 1s. C. planipemmis. Rufo-picea, parce pubescens, capite parce punctato, thorace latitudine fere sesqui breviore, postice modice angus- tato, lateribus pallidioribus late marginatis postice haud sinuatis, an- gulis posticis obtusis, disco parce haud profunde punctato, basi profunde impresso magis punctato, elytris planiusculis subopacis, postice inde- terminate obscuris, striis impunctatis, interstitiis disperse punctulatis, antennis pedibusque ferrugineis. Long. °43. New Mexico; Mr. Ulke. Resembles C. reflexa, but the thorax is much less strongly punctured, the hind angles are more obtuse, and the strie of the elytra are impunctured. 19. C. hudsonica. Obscure rufo-picea, parce pubescens, capite thoraceque grosse sat dense punctatis, hoc latitudine fere sesqui breviore, DESCRIPTIONS OF NEW SPECIES. 7 postice valde angustato, lateribus late marginatis antice valde rotunda- tis postice sinuatis, angulis posticis rectis prominulis, elytris versus basin pallidioribus, striis punctatis, interstitiis sat dense punctatis, an- tennis pedibusque obscure ferrugineis. Long. 38. Methy Lake, and Labrador; Mr. Kennicott, and Prof, Chad- bourne. A very distinct species; the lateral margin of the tho- tax is not so wide as in C. reflexa, but about the same as in C. ertbricellis. 20. C. borealis. Nigro-picea, parce pubescens, capite thoraceque pro- funde haud grosse punctatis, hoe latitudine vix breviore, postice fortiter angustato, lateribus modice marginatis undulatis postice subsinuatis, angulis posticis obtusis subrotundatis, elytris cyaneo-tinctis, humeris rufescentibus, striis fortiter punctatis, interstitiis parce subtiliter sub- seriatim punctatis, antennis pedibusque ferrugineis. Long. *31--35. North Red River, Mr. Kennicott: Nova Scotia, Mr. Ulke. Of the same shape as C. pilosa, with the sides ef the thorax irregu- larly rounded in the same manner, but with the hind angles more obtuse, and slightly rounded at tip; the pubescence of the elytra is shorter, and the punctures of the intervals are smaller and almost arranged in single lines. RHOMBODERA BReicue. 21. R. bicolor. Capite thoraceque rufo-testaceis, hoc latitudine plus sesqui breviore, postice valde angustato, et profunde impresso lateribus subangulatis marginatis, linea dorsali tenui, elytris nigris fere obsolete striatis, margine tenui laterali rufo-testaceo, abdomine antennisque pi- ceis, pedibus rufo-testaceis. Long -20. Western States: Dr. Schaum. MResembles &. pallipes Lec., except in color. PLATYNUS Boy. (emend. Brutxé.) 22. P. caudatus. Nigro-piceus, thorace latitudine longiore, ovato, lateribus valde marginatis, basi late rotundato, angulis posticis obtusis, linea dorsali profunda, impressionibus basalibus elongatis angustis, elytris ovalibus planiusculis fortiter marginatis obsolete striatis, in- terstitiis lmo, 3i0, 5to et Tmo punctis parcis uniseriatim positis, apice oblique sinuatis et singulatim acuminatis ; pedibus, palpis, antennis- que ferrugineis, his articulo dio sequentibus duobus vix breviore. Long. 50. Western States, one male; Mr. John Akhurst. Resembles P. larvalis Lec., but the thorax is less broadly margined, the elytra 8 DESCRIPTIONS OF NEW SPECIES, are strongly acuminate at tip, and the alternate elytral spaces are marked with an irregular series of large punctures. 23. FP. dissectus. Rufo-piceus, thorace latitudine longiore, ovato, la- teribus valde marginatis, basi medio emarginato utrinque obliquo, an- gulis posticis subrectis, elytris planiusculis fortiter marginatis obsolete striatis, interstitio 3io 4-punctato, apice oblique sinuatis ; antennis arti- culo 3i0 4to sesqui longiore. Long. °45. Nebraska; Dr. Hayden: Texas; Mr. 8S. B. Buckley. Also re- sembles P. darvalis, but the 3d joint of the antennz is much shorter. This species by its intermediate character necessitates the union of Rhadine Lec. with Platynus. 24. P. opaculus. Depressus, niger, thorace latitudine breviore, an- tice et postice angustato, lateribus rotundatis, margine fortius reflexo pi- ceo, angulis posticis obtusis subdentiformibus, basi utrinque late impres- so, et vix punctulato, elytris planiusculis thorace fere duplo latioribus basi fere truncatis, striis angustis, interstitiis planis, 3io tripunctato; pedibus nigro-piceis, antennis capite cum thorace paulo longioribus, pal- pisque rufo-piceis. Long. *50. Ohio; Mr. Ulke. In appearance this species resembles P. de- cens, but it differs very much from that and from every other known to me by the characters given above; it is intermediate between that species and P. cincticollis. 25. FP. clemrems. Piceus, nitidus, thorace convexiusculo, subcordato, latitudine haud breviore, postice angustato, lateribus postice vix sinua- tis, angulis posticis obtusis haud rotundatis, ad basin punctato et utrin- que fovea parva impresso, linea dorsali vix distincta, elytris elongato- ovalibus thorace latioribus basi subtruncatis, striis antice profundis, interstitiis paulo convexis, 3io bipunctato, antennis palpis pedibusque pallidis. Long. °32. Nova Scotia; Mr. Ulke. Also very different from any other species seen by me; the elytrahave but two dorsal punctures, the first is placed in the third stria, one-fifth from the base ; the second is in the second stria about the middle; I can perceive no vestige of a third dorsal puncture in three specimens before me. 26. P.subsericeus. Cupreo-aeneus, viridi-micans, thorace latitu- dine vix breviore, subquadrato tenuiter marginato planiusculo, angulis posticis obtusis rotundatis, basi utrinque profunde breviter impresso et parce punctulato, elytris thorace paulo latioribus basi truncatis, DESCRIPTIONS OF NEW SPECIES. 9 opaciusculis, tenuiter striatis, interstitiis planissimis, 3io tripunctato, antennis palpisque nigris ; subtus obscure aeneus. Long. 38. Kansas; Mr. Ulke. Related to P. cupripennis, but differs by the form of the thorax, as well as by the color. The opacity of the elytra gives a sericeous lustre to the surface. 27. P. cremistriatus. Longiusculus, niger nitidus, thorace ovali, latitudine paulo longiore, margine laterali angusto, ad basin utrinque fovea parva profunda impresso, linea dorsali tenui, elytris ovalibus thorace latioribus basi paulo emarginatis, striis profundis fortiter puncta- _ tis, interstitio 3io tripunctato, pedibus rufo-testaceis, antennis palpisque piceis, basi rufo-testaceis. Long. °30. Illinois. Of the same size and form as P. punctiformis, but differs by the very strongly punctured elytral strive, and by the smaller and deeper basal impressions of the thorax. 28. P. perforatus. Capite thoraceque viridiaeneis nitidis, hoc ru- goso, subrotundato latitudine fere sesqui breviore, postice paulo angus- tiore, margine laterali depresso postice latiore et subreflexo, impressioni- bus posticis latis haud profundis magis rugosis, elytris cupreo-aeneis, thorace latioribus basi truncatis, striis tenuibus punctulatis, interstitio 3io foveis 3 vel 4 magnis impressis; subtus, antennis pedibusque nigro- aeneis. Long. 30. Methy, Hudson’s Bay Territory; Mr. R. Kennicott. On the right elytron are seen four fovee placed as in P. 8-punctatus ; on the left are but three; from the position of the 3d I think that the normal number is four. EVARTHRUS Lec. . E. e Niger (mas) nitidus orace »cordato latitudine 29. E. torvus. N tidus, thorace subcordato latitud paulo breviore, lateribus rotundatis postice breviter sinuatis, angulis posticis rectis prominulis, basi apice vix angustiore, linea dorsali in- tegra, basi utrinque bistriata, profunde impressa et rugosa, carina ex- gra, 1 ’ § ’ terna distincta, elytris ovalibus, striis fortiter punctatis ad apicem minus profundis. Long. *70. Kansas; Mr. Ulke. This species has the 8th stria not closely approximated to the marginal one, and is allied to 2. orbatus, but differs by the much more strongly punctured elytral striz, as well as by the form of the thorax and elytra; the former is less narrowed behind, and less strongly rounded on the sides than in Z. orbatus, 10 DESCRIPTIONS OF NEW SPECIES. and the elytra are less rounded on the sides in front and more ob- tuse behind. PTEROSTICHUS Bon. 30. P.sphodrinus. Elongatus, nigernitidus, thorace latitudine paulo longiore, obovato, lateribus et angulis posticis tenuiter marginatis, his obtusis et rotundatis, linea dorsali vix distincta, ad basin utrinque breviter impresso, haud marginato elytris elongato-ovalibus thorace haud latiori- bus, striis impunctatis, interstitiis paulo convexis, humeris haud den- ticulatis. Long. °47. Nebraska; Mr. Ulke. This species is related to P. adoxus, but differs from that as from all our other species having no dorsal punctures, by the obtuse and rounded hind angles of the thorax ; in form it is narrower than P. adoxus, and resembles on a large scale P. longicollis. The tip of the prosternum is not surrounded by a marginal line. 31. P.laetulus. J propose this name for the species form- erly described by me (Journ. Acad. Nat. Sc. 2d Ser. ii. 253), as Poecilus californicus, from which it differs by the bright green color, and by the sides of the thorax being distinctly sinuated behind, and also by the elytra being flatter and more finely striate. Baron Chaudoir considers this species as that described by Dejean, but I have received from Count Mnizech, a species which corres- ponds in color and in other characters with Dejean’s description, and which is quite different as will be seen by the comparison above given. 32. P. texamus. Obscure cupreo-aenens, nitidus, thorace subquadrato antrorsum angustiore, tenue marginato, lateribus rotundatis postice haud sinuatis, angulis posticis subobtusis, basi utrinque biimpresso, im- pressione externa parva, elytris striis profundis obsolete punctatis, in- terstitio 3io postice bipunctato, antennis obscuris, articulis duobus primis ferrugineis. Long. *55. Texas. Of the same form as P. chalcites, but with the thorax somewhat broader and not at all punctured in the basal impres- sions, and with the elytral striae only obsoletely punctured. 33. P. splendidulus. Elongatus, supra aeneus nitidus, thorace capite parum latiore, quadrato latitudine breviore, lateribus rotundatis, postice haud sinuatis, angulis posticis obtusis, margine haud depresso, basi utrinque foveis duabus impressis, externa multo minore, elytris DESCRIPTIONS OF NEW SPECIES. Ee tenuiter striatis, interstitiis planis, stria 2nda postice bipunctata; subtus niger, pedibus antennisque rufis, his basi haud carinatis. Long. -25. One female, Fort Yuma, California, very different from all our other species of the division Poecilus by the first three joints of the antennae not being carinated. 34. P. desidiosus. Elongatus, niger, nitidus, thorace latitudine haud breviore, lateribus rotundatis, postice paulo angnstiore, basi truncato utrinque 1-striato, angulis posticis obtusis haud rotundatis, elytris striis profundis antice punctatis, interstitiis paulo convexis, 3io tripunctato, antennis pedibusque ferrugineis. Long. ‘28. Western States. Similar in form and sculpture to P. femoralis, but differs by the elytral strive being strongly punctured, instead of feebly punctulate as in that species. The legs in two specimens now before me are of a uniform red color, while in P. femoralis the thighs are darker. 35. P. hudsomicus. Elongatus, niger pernitidus, thorace subcordato, latitudine haud breviore, lateribus rotundatis, postice sinuatis, angulis posticis rectis, linea dorsali tenui, basi utrinque impresso et punctato et ad angulos obsolete foveato, elytris elongato-ovalibus, parum convexis, striis antice punctulatis, interstitio 3io tri- vel quadripunctato, antennis piceis, pedibus obscure ferrugineis. Long. ‘31. Hudson’s Bay Territory; Mr. Ulke. Nearly related to P. em- petricola and several other Russian American species, but differs from all of the same division in my collection by the thorax being not wider than its length, and by the less convex elytra. 36. P. tumescens. Apterus, piceus nitidus, thorace latitudine fere sesqui breviore, lateribus valde rotundatis, postice angustato, basi trun- cato, fovea elongata utrinque impresso, angulis posticis obtusis haud rotundatis, elytris ovalibus convexis basi fere truncatis, striis antice fortiter punctatis, externis obliteratis, interstitio 3io tripunctato, epip- leuris, antennis pedibusque piceo-ferrugineis. Long. 33. Louisiana; Mr. Ulke. This species is more nearly allied to P. obscurus and ventralis than to any other of our native species; it has like them but five strive on each elytron, and the scutellar stria is absent; the 2d dorsal puncture is situated on the 2d stria as usual. It differs from the two species above named by the hind angles of the thorax being distinct and not at*all rounded, but this is not sufficient to separate it from them as a distinct division of the genus. 12 DESCRIPTIONS OF NEW SPECIES. 37. P. protemsus. Elongatus, niger nitidus, thorace fere trapezoideo, latitudine paulo longiore, postice angustato, lateribus late rotundatis, fortiter marginatis, angulis posticis obtusis et rotundatis haud carinatis, linea dorsali tenui, impressionibus transversis profundis, basi utrinque late foveato et parce punctulato, elytris striis valde profundis, intersti- tiis angustis convexis, stria 2nda postice bipunctata, humeris haud den- tatis. Long. °68. Pennsylvania; Mr. Ulke. Belongs to the same group with P. stygicus, coracinus, &c., but differs by the hind angles of the thorax not being carinated; the basal impressions are consequently single as in P. moestus, which, however, is a broader insect with less deep elytral strize, and four dorsal punctures. DICAELUWS Boy. 38. D. turbulemtus. Elongatus, niger opacus, thorace latitudine breviore, lateribus postice fere parallelis, antice rotundatis, margine late sensim reflexo, basi medio late emarginato, utrinque oblique impresso, elytris thorace parum latioribus, interstitiis convexis, 7mo ultra trientem carinato. Long. :*85—1:0. Missouri; Prof. Agassiz. Larger than D. reflexus, with the sides of the thorax quite as much reflexed, but very different by the body being entirely without lustre. ANOMOGLOSSUS Cuaovp. 39. A. amoenus. Baron Chandoir has retained this species in Chlenius, but it seems to me more naturally placed in the present genus. The mentum tooth is not absolutely wanting as in the other two spe- cies, but is very small, and not prominent and emarginate as in the other species of Chlienius; the labrum is quite distinctly emarginate, though less so than in A. emarginatus. CHLAENIUS Bon. 40. C.sparsus. Supra nigro-cyaneus, griseo-pubescens, capite tho- raceque viridi-tinctis, occipite frontisque lateribus punctatis ; thorace subquadrato, latitudine vix breviore, lateribus late rotundatis, angulis anticis deflexis, posticis subrectis, parce grosse punctato, basi utrinque vage impresso, linea dorsali tenui, elytris ovalibus thorace latioribus, striis tenuibus punctulatis, interstitiis parce punctulatis ; subtus fusco- niger, antennis pedibusque ferrugineis, genubus tarsisque infuscatis. Long. °53—-58." DESCRIPTIONS OF NEW SPECIES. 13 Cape San Lucas, Lower California: Mr. Xdntus. The third joint of the antenne is one-half longer than the fourth, as in C. cumatilis, from which this species differs by the form of the thorax and by the color. OODES Bon. P Al. O. fluvialis. Elongato-ovalis, niger nitidus, thorace latitudine paulo breviore, ante medium fortiter angustato, lateribus magis rotun- datis, angulis posticis subrectis, elytris latitudine sesqui longioribus, convexis, striis punctulatis, interstitiis planis, 3i0 bipunctato, metasterno sat dense punctato. Long. °50; lat. 20. Canada and Western States. Much narrower and more convex than O. americanus, with the sides of the thorax almost parallel behind, converging only in front of the middle. The sculpture beneath is just as in O. americanus. A specimen from Canada is still narrower and more convex, but as there are evidences of dis- tortion about the specimen I consider the difference as accidental. Mr. Benj. D. Walsh informs me that this species is found quite frequently in the sloughs of the Mississippi River, near Rock Island, swimming freely in the water. A2. O. texamus. Elongato-ovalis, nigro-eneus, nitidus, thorace latitu- dine haud breviore, fere a basi antrorsum fortiter angustato, lateribus modice rotundatis, elytris latitudine haud sesqui longioribus, striis punctatis, 7ma obliterata, interstitio tertio bipunctato, metasterno abdo- minisque basi rude punctatis. Long. 45; lat. 18. Texas: Mr. S. B. Buckley. Narrower and flatter than O. 14- striatus, with the strie of the elytra finer and quite distinctly punctured. CRATOGNATHUS Des. A3. C. altermatus. Piceus nitidus, thorace capite paulo latiore, latitudine fere sesqui breviore, subcordato postice angustato, lateribus rotundatis setigeris postice subsinuatis, angulis posticis rectis, basi utrinque foveato, elytris convexis, striis profundis, interstitiis 1mo dio 5to Tmo et Ino punctis setigeris parcis fere uniseriatim digestis, anten- nis, labro, palpis pedibusque rufo-testaceis. Long. -42. Arkansas; Mr. Ulke. In ©. setosus all the intervals of the elytra are furnished with setigerous punctures; in C. cordatus they are all without punctures. 14 DESCRIPTIONS OF NEW SPECIES. DISCODERWS Lec. 44, D.amoenus. Elongato-ovalis, capite thoraceque rufo-piceis, hoc rotundato, latitudine paulo breviore, ad basin utrinque impresso et parce subtiliter punctato, elytris obscure cyaneis nitidissimis, striis profundis, 2nda 5ta et 7ma punctis pluribus parvis notatis; subtus rufo-piceus, antennis pedibusque dilutioribus. Long. °33. New Mexico; Mr. Ulke. A very distinct and beautiful species. ANISODACTYLUS De. 45. A. pumctulatus. Oblongo-ovalis, niger nitidus, thorace sub- quadrato, latitudine breviore antice subangustato, latcribus rotundatis postice subexplanatis, angulis posticis obtusis rotundatis, ad basin utrinque subtiliter punctulato et vage foveato, elytris stria 2nda postice puncto impresso, antennis palpisque rufo-piceis, illis articulo lmo dilu- tiore. Long. °43. Middle States; not rare. This species nearly resembles A. n7- gerrimus, but the sides of the thorax are less rounded, and the basal impressions are deeper and more punctulate. The elytra are moderately sinuate near the tip as in A. mégerrimus, and the ter- minal spur of the front tibie is slightly dilated each side towards the base. 4G. A.furwus. Oblongo-ovalis, (femina) fere opacus, thorace latitu- dine breviore antrorsum sensim angustato, lateribus rotundatis postice explanatis cum basi dense punctulatis, angulis posticis obtusis rotun- datis, basi utrinque late haud profunde impresso, elytris stria 2nda postice unipunctata, ad apicem vix sinuatis, antennis piceis, articulo primo palpisque rufo-piceis. Long. 48. One female from the upper part of Georgia. Resembles in ap- pearance A. carbonarius, but the sides of the thorax are less widely depressed, and the terminal spur of the anterior tibie is not tricuspid, but only slightly dilated on the sides. The elytra are less sinuate towards the tip than in any of the neighboring species. 4%. A. Iharrisii. Oblongo-ovalis, niger subnitidus, thorace latitudine breviore antice subangustato, lateribus rotundatis postice late depressis, cum basi subtiliter punctatis, angulis posticis obtusis rotundatis, basi utrinque vage impresso, elytris stria 2nda postice unipunctata, antennis piceis, articulo primo subtus, palpisque rufo-piceis. Long. *45. Middle and Eastern States. This species was sent to me by Dr. DESCRIPTIONS OF NEW SPECIES. 15 Harris as A, agricola; what I consider as Say’s species has the hind angles of the thorax obtuse but not rounded. The present species is readily known among those with rounded angles by the more strongly depressed and punctured sides of the thorax. The elytra are distinctly sinuate near the tip, and the terminal spur of the front tibiz is slightly dilated.* 48. A. rudis. Elongatus, nigro-piceus nitidus subaenescens, parce breviter pubescens, capite utrinque punctato, thorace subcordato, lati- tudine vix breviore, lateribus late rotundatis postice subsinuatis, an- gulis posticis rectis, antice et postice grosse punctato, ad basin utrinque impresso, elytris interstitiis 2ndo 4to et 6to fortiter subbiseriatim punc- tatis, externis duabus disperse punctatis, 1mo et 3io punctis pluribus prope strias sitis, antennis nigro-piceis, basi rufescentibus; Long. 40. California, one male. Of the same size and shape as A. alters nans, but differs by the much coarser punctures; as in the other species of this section, having the alternate intervals of the elytra punctured, the elytra are strongly sinuate near the tip, but in the present species the sutural angle is not rounded. The terminal spur of the front tibie is dilated each side into a very distinct tooth, almost as in the first and second sections of the genus. * The black species of Anisodactylus inhabiting the eastern slope of our territory, and belonging to the present section of the genus, may be readily distinguished by the following table; in all of them the terminal spur of the front tibie is but slightly dilated each side. A. Hind angles of thorax obtuse and rounded ; Sides of thorax scarcely depressed behind ; Base of thorax scarcely impressed or punctured. 1. NIGERRIMUS. Base of thorax punctulate and impressed. 2. PUNCTULATUS. Sides of thorax distinctly depressed and together with the base punc- tured ; Elytra opaque, not sinuate towards the tip. 3. FURYVUS. Elytra not opaque, distinctly sinuate near the tip. 4. HARRISIL. B. Hind angles of thorax obtuse, not at all rounded ; Thorax wider and less convex, with the sides more widely depressed. 5. MELANOPUS. Thorax more convex, less transverse with the depressed margin nar- rower ; Hind angles of thorax quite obtuse. 6. NIGRITA. Hind angles of thorax nearly rectangular. 7. AGRICOLA. 2 16 DESCRIPTIONS OF NEW SPECIES. EURYTRICHUS Lec. A9. E. flebilis. Oblongus, nigro-piceus subnitidus, thorace latitudine plus sesqui breviore antice posticeque «qualiter angustato, lateribus ro- tundatis postice obliquis, angulis posticis obtusis haud rotundatis, ad basin utrinque leviter impresso, elytris thorace paulo latioribus, tenuiter striatis, stria 2nda postice unipunctata; antennis palpis pedibusque piceo-rufis. Long. *35—-40. Cape San Lucas, Lower California; Mr. Xintus. Quite dis- tinct from our other species by the form of the thorax; the sides behind are scarcely perceptibly flattened. GYNANDROTARSUS Ferré. 50. G. opaculus. Oblongo-ovalis fere depressus, niger, thorace lati- tudine breviore antice paulo angustato, lateribus late rotundatis postice paulo explanatis, angulis posticis rotundatis, elytris opacis, apice vix sinuatis, interstitiis 3i0 5to et Tmo postice punctis pluribus impresso. Long. °48. One female, from Texas; Mr, Ulke. This species resembles to a remarkable degree Anisodactylus ellipticus, but is less convex and less shining ; the first joint of the front tarsi is longer than the two following, which are equal in size, and about twice their width ; the terminal spur of the anterior tibiz is broken, but is evidently dilated into a large tooth on the outer side, but whether there is a corresponding tooth on the inner margin I cannot determine. The first joint of the front tarsi does not extend under the second as in G. harpaloides. The last named species has a very extensive range; a female was collected by Mr. Kennicott, on the Red River of the North, and a male was given me by Dr. Schaum, as found in Louisiana; the latter can in no respect be separated from Anisodactylus; the middle and front tarsi are broadly dilated, and covered with a dense brush of hairs beneath, and the first joint is much narrower than the others; the terminal spur of the front tibie is tricuspid. BRADYCELLUS Er. 51. B. limearis. Valde elongatus, nigro-piceus, pernitidus, thorace latitudine multo longiore, postice angustato, lateribus postice subsinu- atis, angulis posticis rectis, apice et basi indeterminate rufescente et parce punctato, linea dorsali profunda, postice utrinque profunde im- presso, elytris parallelis thorace paulo latioribus, sutura rufescente, DESCRIPTIONS OF NEW SPECIES. 1 Striis profundis punctulatis, 2nda postice unipunctata ; antennis fuscis, basi, palpis pedibusque flavo-testaceis. Long. 20. Pennsylvania; Dr. George H. Horn: Wisconsin; Mr. Ulke. This singular species is remarkable for the extreme narrowness of the body, which is not wider in proportion than in a Clivina. HARPALUS Larr. 52. H. (Selenophoruwus) fatuus. Elongato-oblongus, encus niti- dus, thorace latitudine sesqui breviore, antice posticeque angustatosla- teribus rotundatis postice haud explanatis, angulis posticis obtusis ro- tundatis, basi utrinque foveato, elytris tenuiter striatis, interstitiis 3io 5to et Tmo punctis pluribus notatis, antennis palpis pedibusque rufo- testaceis. Long. 22. South Carolina to Texas. Differs from all of our other small brassy species by the thorax being more distinctly narrowed be- hind, and by the less robust form. 53. H. inmocuus. Robustus, oblongus, niger subnitidus, thorace lati- tudine breviore, subquadrato, lateribus antice late rotundatis, postice subrectis et paule explanatis, basi recta, angulis posticis fere rectis, apice rotundatis, ad basin subtiliter punctato, et utrinque late foveato, elytris ovalibus thorace laticribus, tenuiter striatis, stria 2nda postice unipunctata, ad apicem vix sinuatis, antennis palpis tibiis tarsisque obscure ferrugineis. Long. ‘37. One female, Marquette, Lake Superior. A very distinct spe- cies from all others in my collection, STENOLOPHUS Der. 54. 8. rotumdatus. Piceus pernitidus, thorace latitudine paulo bre- viore, rotundato apice emarginato, basi subtruncato, et utrinque fovea parva notato, elytris thorace vix latioribus, basi truncatis, striis profun- dis, scutellari brevi, interstitio 3io0 postice unipunctato, suturd rufes- cente; antennis pedibusque testaceis. Long. ‘17. Louisiana; Dr. Schaum. This species resembles in form the larger varieties of S. conjunctus, but the thorax is less transverse,’ and the elytral striae are much deeper. 55. S. hydropicus. Piceus nitidus, capite magno, thorace ovato capite vix latiore, latitudine paulo breviore, postice angustato, angulis posticis obtusis subrotundatis, basi utrinque late impresso et obsclete punctato elytris ovalibus thorace latioribus, modice striatis, stria scu- 18 DESCRIPTIONS OF NEW SPECIES. tellari distincta, 2nda postice unipunctata, ad apicem oblique subtrunea- tis ; antennis crassiusculis, palpis pedibusque testaceis. Long. ‘11. New York; May, under stones. This species is sufficiently distinguished at first sight from all our other species by the large head and oval elytra. The anterior tarsi of the male are scarcely dilated. 56. S carus. Rufo-piceus pernitidus, capite piceo, thorace subquad- rato, latitudine paulo breviore, postice angustato, angulis posticis obtusis rotundatis, basi utrinque late imprcesso et obsolete punctato, elytris cyaneo-micantibus, thorace latioribus, basi truncatis, apice oblique sub- sinuatis, striis mediocribus, scutellari brevi, 2nda postice unipunctata, epipleuris palpis antennis pedibusque testaceis. Long. :12. Hudson’s Bay Territory and Illinois; Mr. Ulke. Quite distinct from all of our other species and readily distinguished by the cha- racters above given. PATROBUS De. 5%. P. rufipes. Niger nitidus, thorace subcordato, latitudine paulo breviore, postice, paulo angustato, lateribus fortiter marginatis, antice rotundatis postice obliquis et subsinuatis, angulis posticis rectis sub- carinatis, linea dorsali distincta impressione transversa antica profunda, ad basin utrinque fovea magna profunda punctata impresso, elytris elongato-ovatis thorace latioribus, striis antice punctatis postice minus impressis, interstitio 3i0 quadripunctato, antennis rufo-piceis, pedibus ferrugineis. Long. -40. North Red River; Mr. R. Kennicott. A little more robust than P. foss¢frons, with the sides of the thorax less sinuate near the base, with the legs red instead of brownish-black; the elytral strie appear to be less finely punctured. ANOPHTHALMUS Srvrm. 58. A. amgulatus. Pallide piceo-rufus nitidus, thorace latitudine longiore subovato, postice angustato et lateribus sinuato, angulis posti- cis rectis prominulis, linea dorsali profunda, ad basin utrinque profunde impresso, elytris ovalibus ad basin late rotundatis, striis antice punc- tulatis postice fere obliteratis, interstitio 3io punctis tribus majusculis impresso. Long. °19. Mammoth Cave, Kentucky; Mr. J. Ph. Wild. This species is much smaller than A. tellkamp/fii, and is readily recognized by the prominent hind angles of the thorax and by the elytra being much less obliquely rounded at base and more deeply striate. DESCRIPTIONS OF NEW SPECIES. 19 BEMBIDIUM Larr. 59. B. recticolle. Depressum, nigro-aeneum nitidum, thorace quad- rato latitudine vix breviore, lateribus antice rotundatis postice fere parallelis, angulis posticis rectis subtiliter carinatis, linea dorsali tenui, impressionibus transversis profundis, fovea utrinque basali bistriata et parce punctata; elytris elongato-ovalibus, ad basin emarginatis, striis dense punctatis, dia bipunctata. Long. 19. New Mexico; Mr. Ulke. This species is allied to B. salebratum and quadrulum ; from the first it differs by the square thorax, and from the second by the more deeply impressed and more densely punctured elytral striz. 60. B. mebraskense. Depressum, nigrum pernitidum, thorace lati- tudine plus sesqui breviore postice angustato, lateribus antice magis rotundatis postice obliquis, angulis posticis obtusis haud rotundatis carinatis, linea dorsali tenui, impressionibus transversis profundis, ad basin punctato et utrinque profunde foveato; elytris striis tenuibus punctulatis, externis fere obliteratis, tertia bipunctata, basi late emargi- natis, humeris rotundatis. Long. :18. Nebraska, near the Rocky Mountains; a specimen kindly given me by Mr. Ulke. ‘This species belongs to the same section with B. complanulum, incertum, &c., from Russian America, but differs from all others in my collection by the elytral striz being finely punctulate, and by the thorax being more narrowed behind, with the basal angles distinctly obtuse. In appearance it bears a strong resemblance to a Blechrus. 61. B. obtusangulum. Supra obscure aeneum nitidum, thorace subconvexo latitudine breviore, postice vix angustiore, lateribus late rotundatis, angulis posticis obtusis vix brevissime carinatis, linea dor- sali tenui, impressione transversa antica mediocri, postica profunda, ad basin utrinque breviter bistriato et parce punctato, elytris oblongo-oval- ibus, subdepressis, tenuiter striato-punctatis, interstitio 3io bipunctato; subtus, antennis pedibusque aeneo-nigris. Long. *20. Nebraska, near the Rocky Mountains; Mr. Ulke. A very dis- tinct species, belonging to the section Notaphus; the striz are all entire, though the outer ones are less impressed towards the tip. 62. B. morulum. Convexum, aeneo-nigrum nitidum, thorace lati- tudine sesqui breviore postice angustato, lateribus rotundatis, angulis posticis obtusis vix brevissime carinatis, linea dorsali obsoleta, impres- sione transversa antica mediocri, postica profunda, ad basin utrinque i 20 DESCRIPTIONS OF NEW SPECIES. foveato, in fovea breviter bistriato, elytris thorace paulo latioribus, ob- longo-ovalibus, striis fortius punctatis, ad apicem obliteratis, interstitio dio bipunctato, antennis nigris articulo 1mo pedibusque piceo-tinctis. Long. '13. Hudson’s Bay Territory; Mr. Ulke. A singular little species, which I was at first inclined to class with B. salebratum, quadru- lum, &c., but the two dorsal punctures are placed upon the third interval, and are not connected with the third stria. I have there- fore, for want of a better place, included it in Notaphus, with several other species in which the outer striz of the elytra are somewhat obliterated towards the tip. TACHYWS Ziccier. 63. T. albipes. Nigro-piceus nitidus, thorace convexo latitudine fere duplo breviore, trapezoideo postice modice angustato, angulis posticis obtusis, ante basin profunda transversim impresso, elytris ovatis, tho- race plus sesqui latioribus, laete irescentibus, bipunctatis, versus sutu- ram obsolete striatis, stria suturali postice profunda; antennis testaceis, pedibus pallidis. Long. :13. Louisiana; Dr. Schaum. This species is as large as 7. proxi- mus, but more robust, and cannot be confounded with any other of our species. G64. T. ventricosus. Piceus nitidus, capite thoraceque rufescenti- bus, hoc minus convexo, latitudine duplo breviore, trapezoideo postice modice angustato, angulis posticis obtusis paulo prominulis, ante basin profunde transversim impresso, elytris ovatis thorace duplo latioribus, bipunctatis, versus suturam obsolete striatis, stria suturali postice pro- funda; antennis rufo-testaceis, pedibus flavo-testaceis. Long. °10. Louisiana; Dr. Sehaum. Smaller than the preceding, and equally robust, but-with the thorax more transverse and less con- vex, and very faintly sinuated on the sides just by the base, so that the hind angles become slightly prominent. 65. T. capax. Convexus, niger nitidissimus, thorace latitudine sesqui breviore, lateribus valde rotundatis, postice breviter sinuatis, angulis posticis rectis brevissime carinatis, linea dorsali mediocri, ante basin tripunctato et utrinque foveato, elytris oblongo-ovalibus, thorace paulo latioribus, bipunctatis, stria suturali profunda integra, 2nda versus api- cem obliterata, 3ia parum distincta, utrinque obliterata; antennis rufo- piceis, basi palpis pedibusque rufo-testaceis. Long. -13. Washington, District of Columbia; Mr. Ulke. Of the same DESCRIPTIONS OF NEW SPECIES. Dil size as 7. tripunctatus and vivax; more convex than the first, and with the sides of the thorax much more rounded than the second. CNEMIDOTUS it. 66. C. muticus. Breviter ovatus utrinque obtuse attenuatus, con- vexus, flavo-testaceus, thorace grosse punctato, ad basin maculis duabus nigris ornato, elytris griseo-testaceis, punctis nigris antice grossis postice subtilioribus striatis, maculis indeterminatis nigris, apice subtruncatis; coxis posticis margine postico Jate rotundato. Long. -16. Middle and Western States. Precisely similar in form ard seulp- ture to C. 12-punctatus, but differs by the hind coxe not having a prominent angle on the hind margin; the spots of the elytra are very badly defined in all my specimens, but appear to be situated as in OC! 12-punctatus; the elytra are not sinuate near the tip, but only very slightly and obliquely truncate. 67. C.edemtulus. Ovatus convexus, postice minus obtuse attenu- atus, flavo-testaceus, thorace grosse punctato, ad basin maculis duabus nigris notato, elytris griseo-testaceis, sicut in priore nigro-punctatis, maculis utrinque sex communique subapicali nigris, apice subsinuatis ; coxis posticis margine postico late rotundato. Long. *16. Kanzas, near the Rocky Mountains. Not so broad as the pre- ceding species, with the hind extremity nearly acute, and the elytra obliquely subsinuate at tip, as in C. 12-punctatus; the spots are well defined and arranged as in that species. WHYDROPORUS Crairv. 6S. H. rotumdatms. Elongato-ovalis, pallidus opacus, confertissime subtiliter punctulatus, thorace lateribus valde rotundatis, cum elytris angulum formante, margine tenui antice et postico, maculisque duabus basalibus nigris, elytris apice oblique truncatis et denticulo externo armatis, sutura, linea subsuturali interrupta, tribus utrinque dorsalibus, guttisque duabus internis, et tribus externis ornatis. Long. *19. Toronto, Canada; collected by Mr. Couper. This species re- sembles in form several European ones, but is quite different in its markings. The suture is black: very near to the suture is a nar- row black line reaching neither base nor tip, and interrupted at the second third of its length: on each elytron are seen besides three narrow black lines reaching neither base nor tip, the outer one being abbreviated about the 2d third, and the inner one inter- rupted behind; on the inside of the inner line and joined to it are 92, DESCRIPTIONS OF NEW SPECIES. two black spots, the first about one-third from the base, the second more than one-third from the tip; outside of the third line are three spots, the first angulated, the second curved and touching the tip ofthe third line, the third parallel with the margin, and touching the tip of the second line. CELINA Avsé&. 69. C. grossulla. Piceo-rufa nitida, elytris obscuris haud dense punctatis, punctisque majoribus triseriatim digestis, serie interna evi- dentiore, apice conjunctim breviter acuminatis. Long. °22. Louisiana ; a specimen kindly given me by Mr. Ulke. This species is very much larger than C. angustata, but agrees with it in form, color, and sculpture; the upper surface is, however, a little more convex, and the sides of the thorax slightly less rounded. COLPIUS Lec. Corpus rotundatum, convexum, postice acuminatum ; antenne filiformes ; palpi maxillares articulo ultimo fusiformi acuto, labiales articulo ultimo elongato triangulari apice emarginato; prosternum apice rotundatum, postice truncatum, concavum lateribus et apice acute marginatum ; tibice antice latiuscule, apice unco elongato extrorsum armatz, intermedi sim- plices, postice longe ciliate ; tarsi articulo lmo elongato, sequentibus tri- bus parvis equalibus, ultimo precedentes tres equante, unguiculis parvis zequalibus, antici maris articulis tribus dilatatis, prime maximo, trian- gulari. This curious genus has the form of the convex rounded Hydro- porus, such as H. cuspidatus. 70. C.inflatus. Globosus, postice obtuse acuminatus, niger opacus, dense punctulatus, et parcius rugosus et punctatus, capite macula magna frontali rufo-picea, thorace linea subapicali transversa insculpto ; ore, antennis pedibusque piceo-ferrugineis. Long. -14. Louisiana; I have also a specimen said to have been found at New York. The genus was first indicated by me in my Classifi- cation of Coleoptera p. 40. HYDROCANTHUS Say. 71. HW. manulus. Elongato-ovalis, postice paulo magis attenuatus, rufo-testaceus nitidus, impunctatus, elytris paulo saturatioribus, an- tennis pedibusque pallidioribus. Long. -05. Louisiana ; Dr. Schaum. ‘The very small size at once distin- DESCRIPTIONS OF NEW SPECIES. 23 guishes this from all other species of the genus ; it is more regu- larly oval, and less convex than the others. LACCOPHILUS Leacza. 42. L. gemtiliis. Elongato-ovalis, postice sensim magis attenuatus, testaceus nitidus, vix subtilissime punctulatus, thorace ad basin paulo infuscato, elytris piceis, sutura antice rufescente, epipleuris, fascia interrupta ad quadrantem, maculis duabus lateralibus apiceque testa- ceis ; abdomine infuscato. Long. :14. Louisiana; Mr. Wapler. This beautiful little species is very distinct from all others found in our territory. The transverse band is situated about one-fourth from the base, and consists of a triangular spot upon each elytron, wider towards the suture ; the first marginal spot is a little before the middle, and the se- cond about two-fifths from the tip, which, with the whole of the lateral margin, is pale. HYDATICUS Leacu. 43. H. piceus. Ovalis, modice convexus, rufo-piceus subnitidus, ver- sus latera pallidior, thorace subtilissime rugoso et punctulato, versus basin utrinque punctis paucis linea digestis, elytris subtilissime punc- tulatis, punctisque solitis fere obsoletis ; subtus niger, pedibus anteriori- bus piceo-testaceis. Long. 50. Middle States and Canada. Broader and less regularly ellip- tical than H. bimarginatus. The color above is reddish brown, paler at the margins of the thorax, the sides of the elytra, and in front of the eyes; the organs of the mouth, the anterior and middle legs are pale brown; the‘trunk and abdomen beneath are nearly black, and the hind legs are dark brown. GWRETES Brotté. 474. G. compressus. Elongato-ovalis, valde convexus, niger nitidis- simus, thoracis lateribus elytrorumque margine latiusculo punctulatis pubescentibus, elytris apice oblique truncatis subsinuatis, angulo ex- terno obtuso; subtus niger, pedibus obscure piceo-rufis. Long. *25. Quincy, Illinois; Mr. Willcox. Narrower than G. sinuatus, and readily distinguished from all the other species of the genus heretofore described, except the South American G@. bidens, by the inflexed margin of the thorax and elytra being black; from the last named species it differs by the outer apical augle of the elytra not being acute and prolonged. 24 DESCRIPTIONS OF NEW SPECIES. BEROSUS Leacz. 25. B. pugmax. Elongato-ovatus, convexus, supra testaceus nitidus, capite punctulato laete aeneo, thorace punctato, medio infuscato, elytris striis confertim punctatis, interstitiis vix convexis fortiter punctatis, maculis pluribus nigris ornatis, apice singulatim emarginatis et bis- pinosis, spina exteriore longiore. Long. 24. Louisiana; Mr. Ulke. The black spots of the elytra are arranged thus: a humeral one ; then two on each elytron forming with those of the other side a transverse band convex behind ; then an undulated oblique band formed of small spots, and finally two small spots, one on the second and the other on the fourth interstice, the inner one being the more posterior; the sutural spine is very short, the outer one long. The body be- neath is black; the palpi, antenne, and legs are pale testaceous. CYLLIDIUM En. 46. C. atrum. Hemisphaericum, nigrum nitidum, thorace lateribus piceis, elytris parce punctulatis, stria suturali profunda, versus basin obliterata, antennis pedibusque piceis. Long. :09. New York. Resembles in color and sculpture C. nigrellum, from the Colorado Valley of California, but is larger; the elytra are, perhaps, more strongly punctulate. PHILHYDRUS So. 97%. P. simplex. Longior, ellipticus convexus, piceo-testaceus niti- dus, capite thoraceque punctulatis,,elytris fusco-lineatis minus subtiliter punctulatis, stria suturali profunda antice obliterata, prosterno haud carinato, mesosterno vix carinato; subtus nigro-piceus, pedibus rufo- piceis. Long. *11. Louisiana; Mr. Ulke. Differs from all our other species having the mesosternum feebly carinate by the small size. In shape it resembles P. nebulosus, but is very much smaller. 78. P. comsors. Longiusculus, ellipticus convexus, piceo-niger niti- ~ dus, subtiliter dense punctatus, thorace latitudine dupto breviore, lateri- bus obliquis paulo rotundatis, angulis omnibus rotundatis, elytris punctis majoribus serie quadruplici minus distincte digestis, stria sutu- rali paulo ante medium obliterata ; antennis rufo-piceis. Long. :29-:32. Louisiana; Mr. Ulke. The prosternum is not carinated, the mesosternum has an elevated plate, pointed at the extremity. . DESCRIPTIONS OF NEW SPECIES. 25 This species resembles in characters P. cinctus, but is larger, and the margins of the body are not at all disposed to be brown as in that species. HYDROBIUWS Leacu. 79. HW. despectus. Ovalis, valde convexus postice subgibbosus, nigro- aeneus subnitidus, thorace alutaceo, versus latera picescente, elytris lateribus subtiliter punctatis, dorso fere laevibus, stria suturali ante me- dium obliterata; subtus rufo-piceus. Long. -09. Middle and Eastern States. More brassy and much more con- vex than H. subcupreus, and readily distinguished by the elytra being nearly smooth at the middle, instead of being equably punc- tured as in the other species. CATOPS Fasr. SO. C. brachyderus. Breviter ovatus, convexus antice valde ob- tusus, postice attenuatus, castaneus, helvo-sericeus, thorace latitudine plus triplo breviore, antrorsum valde angustato et lateribus rotundate, angulis posticis acutis postice paulo prolongatis, subtiliter rugose punc- tulato, elytris a basi oblique angustatis, transversim strigosis, stria suturali antice abbreviata ; antennis thorace brevioribus, sensim paulo clavatis. Long. °12. Nova Scotia; Mr. Ulke. A species remarkable for the great breadth and obtuseness of the front part of the body. The me- sosternum is carinate. HYDNOBIUS Scumipt. S1. H. substriatus. Ovalis, convexus, piceo-ferrugineus, nitidus, thorace subtiliter punctato, lateribus rotundatis, antice angustato, angu- lis posticis valde obtusis, elytris pallidioribus minus subtiliter punctatis, punctis seriebus cohfertis digestis; antennarum articulo 7mo et Ino zequalibus, intermedio triplo latioribus. Long. -10. Mas femoribus posticis dente maximo acuto versus apicem armatis. Nova Scotia and New York; Mr. Ulke. It is evident that the rows of punctures on the elytra represent alternately striz and interstitial punctures, but they are of equal size and equally dense. AMPHICYLLIS Enz. S2. A. picipemnis. Rotundato-ovalis, convexa, rufo-picea nitida, thorace punctulato, a basi sensim angustato, angulis posticis obtusis, 26 DESCRIPTIONS OF NEW SPECIES. elytris paulo pallidioribus et fortius punctulatis, punctis hic inde stria- tim digestis, stria suturali ad medium antice obliterata; antennarum clava fusca, secapo haud breviore. Long. °08. Northern New York; Mr. Ulke. The genus Amphicyllis differs from Liodes and Agathidium by the club of the antennz being composed of four joints. The body is not contractile into a ball. CLAMBUS FiscHer. 83. C. puberulus. Ovatus, convexus, rufo-piceus nitidus, subtiliter sat dense helvo-pubescens, subtiliter punctulatus, subtus piceus, anten- nis pedibusque testaceis. Long. :03. Pennsylvania, rare. Our other species, C. gibbulus, is very shining, black and entirely glabrous. MICROSTEMMA Morscu. 84. M. grossa. Castanea nitida, longe pubescens, thorace ovato con- vexo, latitudine haud breviore, postice paulo angustato, pone medium punctato, ante basin utrinque bifoveato, elytris elongato-ovalibus valde convexis, thorace haud sesqgui latioribus, subtiliter parce punctatis. Long. °10. Mobile, Alabama; Col. Motschulsky. The antenne are half as long as the body; the first joint is one-half longer than the second, which is joined to it at an angle; the 3d and 4th joints are each equal to the 2d; the 5th is nearly one-half longer; the three following are shorter and equal; the 9th and 10th are each as long as the two preceding, and twice as thick, and the 11th still longer, forming an elongate club ; the femora are considera- bly clubbed. The genus Microstemma is easily distinguished by the antennz being geniculate with the first joint not elongated. S85. M. motschulskii. Castanea nitida, longe flavo-pubescens, | thorace ovato convexo, latitudine haud breviore, postice paulo angus- tato, ante basin utrinque bifoveato, elytris elongato-ovalibus valde con- vexis, thorace vix sesqui latioribus, subtiliter haud dense punctatis. Long. :07. Mobile, Alabama; Col. Motschulsky. Smaller than the pre- ceding, with the thorax not punctured behind, and the elytra more obviously punctured. DESCRIPTIONS OF NEW SPECIES. 27 SCYDMAENUS Lar. 86. S. pyramidalis. Elongatus, rufo-piceus, tenuiter pubescens, thorace longiusculo, antrorsum angustato lateribus vix rotundatis, ante basin linea transversa impresso, elytris basi unifoveatis, obsolete punc- tulatis ; antennis sensim fortius clavatis, articulo 8vo praecedente sesqui majore. Long. ‘03. Mobile, Alabama; Col. Motschulsky. This small species be- longs to the group having the last four joints of the antenne enlarged, and the thorax forming a very obtuse angle with the elytra, but is much smaller than S. obscurellus or S. clavatus, and differs moreover by the 8th joint of the antenne being inter- mediate in size between the 7th and 9th, instead of being nearly equal to the 9th. ADRANES Lec. S77. A. coecus Lec. A male of this very rare species, found in Illinois, and sent me by Dr. C. A. Helmuth, differs from the female found by me in Georgia, by being much smaller and of a paler color; the middle thighs are armed beneath near the base with a long acute spine, and the middle tibize are broadly sinuous at the inner margin. CIRCOCERWS Morscu. 88. C. batrisoides. Rufo-castaneus, flavo-pubescens, fronte canali- culata et transversim impressa, vertice foveis duabus parvis impresso, thorace ovato convexo, obsolete punctulato, ante basin fovea parva im- presso lineaque transversa arcuata parum distincta, elytris subtiliter punctatis, basi foveatis et breviter striatis, stria suturali postice obsoleta, abdomine subtiliter punctato. Long. -07. New Orleans; Col. Motschulsky. The shape of this insect is that of an elongated Bryaxis; the antenne are nearly half as long as the body ; the first and second joints are thicker than the following, the joints 3-8 are nearly equal and scarcely as long as their width, the 9th and 10th are gradually a little wider, but scarcely longer, the 11th is very large, oval, somewhat compressed, and equal in length to one-half of the preceding portion of the antenne ; the penultimate joint of the maxillary palpi is very small, the last joint is very long and cylindrical. The abdomen is moderately margined, and the claws of the tarsi are equal. 28 DESCRIPTIONS OF NEW SPECIES. EUPSENIWS Lec. 89. Eu. rufus. Saturate rufo-ferrugineus, nitidus, laevissimus, capite bifoveato, thorace postice paulo angustato, linea basali medio angulata, postice in ipso latere fovea magna impresso, elytris basi utrinque bifo- veatis. Long. ‘055. Mobile, Alabama; Col. Motschulsky. Larger than Hu. gla- ber, but not different in characters except that the thorax is less narrowed behind, and less sinuate on the sides near the base. TRIMIOM Avsé. 90. T. americanum. Elongatum, rufo-testaceum, fere glabrum, capite haud punctato, bifoveato, foveis linea profunda angulata connexis, thorace cordato, postice sulco transverso angulato insculpto, elytris basi utrinque fovea oblonga impressis, stria suturali profunda ; palporum maxillarium articulo ultimo ovali. Long. *03. ; Mobile, Alabama; Col. Motschulsky. Quite distinct by the form of the thorax from our other species; the basal fovee are not obvious, but the transverse groove is quite deep. EUPLECTUWS Leacu. Oi. Eu. cavifroms. Testaceus, parum pubescens, capite sulcis pro- fundis antice conjunctis, vertice elevato obsolete foveato, thorace fovea media elongata disereta, posticis sulco connexis. Long. :04-*045. New Orleans; Dr. Schaum and Col. Motschulsky. Nearly related to Hu. difficilis, but the front is more concave at the junction of the impressions, and the vertex is scarcely foveate ; the elytra are also less flattened. 92. Eu. ruficeps. Piceo-rufus, vix pubescens, capite thoraceque dilu- tioribus, illo fortiter bifoveato antice vix impresso, hoc subquadrato, foveis posticis magnis linea arcuata connexis, elytris fovea basali striaque suturali profundis, pedibus flavo-testaceis. Long. *02. New Orleans; Col. Motschulsky. A very distinct species of the same size as Hu. pumilus. PHWTOSUS Cortis. 93. P. opacus. Linearis depressus, testaceus opacus, capite thorace elytrisque subtilissime alutaceis, obsolete parce punctulatis et vix con- spicue pubescentibus; thorace obsolete canaliculato, elytris thorace DESCRIPTIONS OF NEW SPECIES. 29 paulo brevioribus ; abdomine subtiliter punctato, segmento antepenulti- mo nigricante. Long. 13. San Diego, California; on the shores of the ocean. This Species resembles so closely the figure given by Duval of the European P. nigriventris, that it is scarcely necessary to add anything to the above description, to enable it to be readily re- cognized. The spines of the anterior tibie are very small, and not by any means conspicuous. The body beneath is finely and densely punctured, and finely pubescent, and rather darker colored than the upper surface, TACHYUSA Er. 94. T. cavicollis. Valde elongata, picea, dense subtilissime punc- tulata, pube subtili cinerea vestita, thorace late (maris valde profunde) canaliculato, latitudine vix breviore, elytris margine apicali pallido, abdomine segmentis anterioribus (1-3) constrictis ultimoque piceo-tes- taceis, antennis fuscis basi testaceis ; pedibus flavo-testaceis. Long. °10. Middle, Southern, and Western States ; common. 95. T. migrella. Elongata, nigra nitida, tenuiter cinereo-pubescens, subtilissime punctulata, thorace obsolete canaliculato, ante basin trans- versim leviter foveato, latitudine paulo breviore, abdomine antice parum angustato segmentis 1-3 transversim profunde impressis ; pedibus nigro- piceis. Long. :12. Middle and Western States ; common. 96. T. baltifera. Minus elongata, nigro-picea nitida, subtiliter punctulata, tenuiter pubescens, thorace elytris abdominisque segmentis 1-3 piceo-testaceis ; thorace postice canaliculato, ante basin transver- sim impresso, latitudine paulo breviore; abdomine basin versus paulo angustato, articulis 1-3 profunde transversim impressis ; antennis pedi- busque fusco-testaceis. Long. °10. One specimen, Coney Island, near New York. Less elongate than the other species, with the fine punctures, especially of the thorax, less dense and more distinct than in the two preceding species. 9%. T. gracillima. Valde elongata, nigro-picea nitida, subtiliter pubescens, capite piceo subtilissime punctulato, thorace latitudine vix breviore, ante basin transversim impresso, sat dense punctulato, piceo- testaceo, elytris piceo-testaceis distincte punctulatis, abdomine articulis 30 DESCRIPTIONS OF NEW SPECIES. 1-3 piceo-testaceis, profunde constrictis, ultimis nigricantibus parce sub- tiliter punctulatis, antennis pedibusque piceo-testaceis. Long. -12. Middle and Western States; common. Resembles in form T. cavicollis, but is readily distinguished by the differences in co- lor and sculpture. ATEMELES Stepaens. 98. A.cawa. Ferrugineus, tenuiter pubescens, antennis articulo 3io praecedente duplo longiore, thorace vix conspicue punctulato, lateribus late reflexis, angulis posticis acutis oblique productis, elytris haud dense subtiliter punctulatis, abdomine supra laevigato. Long. :20--23. Massachusetts, Pennsylvania, Illinois; rare. I have never found this species, and do not know with what species of ant it lives. HWPOCYPTUS Mayy. 99. Hi. ziegleri. Brevis, niger, nitidus, parce pubescens, thorace an- gulis posticis rotundatis, margine tenuissimo vix diaphano, pedibus an- tennisque obscure testaceis, his sensim clavatis. Long. *03. York, Pennsylvania; Rev. D. Zeigler. Remarkable for the body being almost broader than its length ; each elytron is one half broader than long. The antenne are gradually, and not strongly clavate. 100. H. testaceus. Ovatus, latitudine fere sesquilongiore, testaceus nitidus, subtiliter pubescens, thorace angulis posticis rectis, elytris sub- tiliter punctulatis, margine latiore concavo; antennis abrupte fortiter clavatis. Long. -02. Athens, Georgia; under pine bark. The abdomen is as long as the elytra; the club of the antenne is very distinct, and the joints 3-7 are very gradually thickened. 101. HM? depressus. Ovalis, latitudine sesqui longiore, supra planus, fusco-testaceus, laevigatus, setis erectis thoracis parcius, elytrorum ab- dominisque lateribus sat dense pilosellus, thorace angulis posticis ro- tundatis ; pedibus pallidis, ano stylis duobus conspicuis armato. Long. “04. Louisiana ; Dr. Schaum. The antenne are broken off, but the tarsi are 4-jointed, and I am, therefore, inclined to refer this curious insect to the present genus, notwithstanding the differences in the sculpture and pubescence; the erect hairs are short and sparse DESCRIPTIONS OF NEW SPECIES. , oF on the thorax, but become longer on the elytra, and are numer- ous at the sides; on the abdomen, which is about as long as the elytra, the hairs are long, and tolerably thickly distributed ; the two anal processes are stout and conical, and about one-half the length of the abdomen; the base of the antennex, and the feet are pale yellow. COPROPORUS Knraatz. 102. C. grossulus. Latiusculus, parum convexus, niger nitidus, thorace obsolete, elytris parce punctulatis, his versus marginem longi- tudinaliter impressis, abdomine supra et subtus subtiliter punctato ; antennarum basi pedibusque piceo-testaceis. Long. 17. Arizona; in trunks of Cereus giganteus. Much larger and less convex than our other species; the mesosternum is very strongly carinate ; the antenne are black with the exception of the three or four basal joints, which are dark testaceous. The sides of the abdomen are provided with a few long bristles. 103. C. pumctipennis. Convexus, niger nitidus, thorace obsolete punctulato, lateribus diaphanis, elytris sat dense punctulatis, ad latera longitudinaliter impressis, margine apicali piceo, abdomine vix punctu- lato, segmentis singulis piceo-marginatis ; antennis pedibusque fusco- testaceis. Long. -09. Fort Yuma, California; Of the same size and shape as C. ven- triculus, but the elytra are more densely punctulate, and the apical margin as well as the segments of the abdomen are tinged with pale piceous. 104. C. laevis. Convexus, niger nitidus, thorace laevissimo, lateribus diaphanis, elytris obsolete punctulato-rugosis, versus marginem medio impressis, margine apicali abdomineque piceis, hoe vix parce punctula- to, antennis pedibusque piceis, illis basi oreque testaceis. Long. ‘09. Southern States; common. Of the same size and shape as C. ventriculus, but easily distinguished by the almost impercep- tible punctures of the elytra. BOLETOBIWS Leacu. 105. B. gemtilis. Capite latitudine duplo longiore nigro, ore flavo, thorace latitudine haud breviore rufo-flavo, elytris nigris, limbo basali latiore, apicalique angusto rufo-flavis, seriebus punctorum solitis vix conspicuis, abdomine rufo-flavo, segmentis ultimis supra et subtus ni- 3 32 DESCRIPTIONS OF NEW SPECIES. gris, pectore nigro; pedibus flavis, antennis crassiusculis nigris, articu- lus 4 primis ultimoque flavis. Long. :17. / Middle States; rare. Allied to B. cinctus, but the thorax is narrower and more gradually narrowed in front, and the suture isnot yellow. The fifth dorsal segment of the abdomen (the first of the black ones), as in that species, has the posterior margin yellow. The abdomen is smooth above and sparsely but strongly punctured beneath. 106..B. restratus. Niger nitidus, capite latitudine plus triplo lon- giore, ore testaceo, thorace latitudine haud longiore, antrorsum fortiter angustato, elytris seriebus punctorum solitis vix conspicuis, piceo-testa- ceis, vitta obliqua a humero sensim dilatata et apicem totum occupante ornatis, abdomine supra et subtus parce fortiter punctato; antennis elongatis basi obscure testaceis.. Long. *33. “Middle States ; rare. The tip of the last joint of the an- tenn is piceous. The elytral stripe commences at the humerus, and is gradually dilated to the tip where it extends to the suture and external angle. The first dorsal segment of the abdomen is smooth, the others are punctured like the ventral segments. 10%. B. lomgiceps. Piceus nitidus, capite nigro-piceo latitudine plus duplo longiore, ore testaceo, thorace nigro latitudine haud breviore, antrorsum fortiter angustato, margine basali pallide piceo; elytris serie- bus solitis tripunctatis dilute piceis, limbo laterali nigricante, abdomine supra dilute piceo, fortiter parce punctato, pedibus testaceis, antennarum articulo 1mo piceo-testaceo. Long. *30. Lake Superior, one specimen. Related to the preceding, but besides the differences in color, the head is less elongate; as in it, the first dorsal segment of the abdomen is smooth ; the others are punctured like the ventral segments, which are, however, darker in color. BRYOPORUS KraarTz. 108. B. flavipes. Nigro-piceus nitidus, antennarum basi pedibusque testaceis, elytris seriebus punctatis setigeris, abdomine modice punctato, helvo pubescente. Long. ‘17. Louisiana; Dr. Schaum. The outer rows of punctures are somewhat confused ; the thorax is not wider than its length; the four apical and four basal punctures are not very near the mar- gins. 9 v oo DESCRIPTIONS OF NEW SPECIES. 109. B. rubidus. Piceus nitidus, capite obscuro, thorace elytrisque rufis, his seriebus grosse punctatis et subrugosis, punctis breviter seti- geris, abdomine modice punctato pubescente, segmentis piceis margine postico pallidiore; ore antennarum basi pedibusque rufo-testaceis. Long. *15. San Jose, California. The punctures of the base and apex of the therax are close to the margins; the punctures of the elytra are larger than those of the preceding species, and somewhat less regular ; there are some rugosities visible which are not seen in b.flavipes. 110. B. rufescens. Nigro-piceus nitidus, thorace elytrisque rufis, his seriebus punctatis setigeris, abdomine fortiter punctato pubescente ; ore, antennarum basi, ano, pedibusque rufo-testaceis. Long. *15—-17. Middle and Western states. More robust than B. flavipes, with the punctures of the thorax still more remote from the base and apex. 11. B. testaceus. Piceus nitidus, minus convexus, ore, antenna- rum basi, pedibus, thorace elytrisque rufo-testaceis, his seriebus punc- torum solitis fere obliteratis, abdomine segmentis dorsalibus fortiter punctatis margine postico anoque rufo-testaceis. Long. :14. Southern States; Dr. Zimmermann. Smaller and less convex than the other species, with the punctures of the elytral rows very small and indistinct; a few larger punctures may be seen here and there ; the apical and basal punctures of the thorax are remote from the margins. MYCETOPORUS Mary. 112. M. flavicollis. Capite pectore elytrisque nigris, his ultra se- riem dorsalem bi- vel tripunctatis, apice late flavis ; thorace flavo, punc- tis apice et basi approximatis ; abdomine piceo-rufo, apice et basi palli- diore, parce punctato; ore pedibusque flavis, antennis piceis basi et apice flavis. Long. ‘17. Louisiana; Dr. Schaum. A beautiful species, strikingly dif- ferent in coloration from any other known to me. ‘The bristles at the sides of the abdomen are numerous. The thorax has only the usual apical and basal punctures, and no discoidal ones. 113. M. Lucidulus. Piceus pernitidus, thorace margine basali pal- lidiore, punctis utrinque tres vel quatuor dorsalibus ; elytris intra seriem ot DESCRIPTIONS OF NEW SPECIES. dorsalem puncto postico impressis ; abdomine parce punctato, apice pal- lidiore, antennarum basi pedibusque piceo-testaceis. Long. *11—-13. Middle and Southern States. This small speciés has the pune- tures of the thorax very well marked; the antenne are rather stouter than usual, and not pale at the tip. In one specimen there are two impressed punctures behind the middle of the ely- tra inside of the dorsal series; there is likewise a supplementary dorsal puncture on the thorax behind the one near the middle on the right side. 114. M. comsors. Nigro-piceus nitidus, thorace punctis utringue quatuor dorsalibus ; elytris serie dorsali duplici, alteraque externa dis- tincta; abdomine piceo, parce punctato, segmentis margine postico piceo-rufo, antennis fuscis basi pedibusque fusco-testaceis. Long. :14. Michigan. Rather broader than the preceding, and readily distinguished by the dorsal punctures of the elytra being arranged in two rows, each containing six or seven well-marked punctures ; half way between the dorsal series and the margin is another row of four or five smaller punctures. The punctures of the thorax are well marked. ACYLOPHORUS Norpmann. 115. A. gilemsis. Niger nitidus, thorace antrorsum modice angustato, lateribus rotundatis, elytris fortiter haud dense punctatis, abdomine subtiliter punctato, longius nigro-piloso; pedibus anterioribus piceis. Long. °24. Gila River, below Pima villages. Of the same size as A. pro- nus, but with the elytra more coarsely and less densely punctured ; the pubescence of the abdomen is longer, and the thorax is less narrowed in front and more rounded on the sides. Sexual differences were not observed by Erichson or by Kraatz. I find in our species that the claws of the anterior tarsi of the male are much larger than those of the female. The species all occur on the margin of streams. 116. A. pratensis. Niger nitidus, thorace antrorsum modice angus- tato, lateribus parum rotundatis, elytris subtilius punctatis, pubeseenti- bus, abdomine subtiliter punctato, longius pubescente, tarsis piceo-tes- taceis. Long. -28. Kansas. Much larger than A. pronus, with similar sculpture, 4] DESCRIPTIONS OF NEW SPECIES. 35 but with the thorax less strongly narrowed in front; only the tarsi, even of the anterior legs, are testaceous. HETEROTHOPS Sverueys. 11%. HW. fusculus. Thorace elytris et ano piceo-rufis, illo latitudine paulo breviore antrorsum fortiter angustato, elytris thorace haud brevi- oribus, subtiliter punctatis, abdomine piceo, punctato, segmentis postice late rufo-marginatis, antennis piceis ‘basi testaceis, capite ovali nigro- piceo, pedibus testaceis. Long. +17. One specimen; Cambridge, Mass. The under surface is red- dish-brown and hairy, paler towards the tip of the abdomen. 11S. H. fummigatus. Thorace elytrisque piceo-rufis, illo latitudine haud breviore, antrorsum sensim angustato, elytris thorace haud bre- vioribus, minis subtiliter punctatis, abdomine piceo, subtiliter confertim punctato, apice paulo pallidiore, antennis piceis basi testaceis, capite ovali nigro-piceo, pedibus testaceis. Long. :14. Detroit, on the bank of the river. Similar to the preceding, but smaller, with the thorax comparatively narrower and less narrowed in front, and the elytra more strongly punctured. 119. H. califormicus. Nigro-piceus, capite ovali, thorace marginibus sepe rufescentibus, latitudine haud breviore, antrorsum fortiter angus- tato, elytris thorace paulo longioribus, fortiter haud dense punctatis, margine apicali sepe rufescente, abdomine dense subtiliter punctato, segmentis margine postico, anoque piceo-rufis. Long. -14—:18. San Francisco, California. Easily distinguished by the an- tenne and feet being nearly black, and the base of the former not paler than the outer joints. ‘ 120. H. pusio. Nigro-piceus, thorace latitudine paulo breviore, an- trorsum fortiter angustato, elytris thorace paulo longioribus, rufo-piceis subtiliter dense punctatis, abdomine piceo, dense subtiliter punctato, apice rufo-piceo ; antennarum basi pedibusge piceo-testaceis. Long. *10. New York; one specimen. Easily distinguished by its much smaller size, and by the more finely punctured elytre TRIGONOPHORUS Norpmany. 121. VT. subcoeruleus. Valde elongatus, niger nitidus, capite grosse punctato, plaga frontali levi, thorace latitudine paulo longiore, utrinque grosse punctato, vitta lata dorsali levi, elytris cyaneis fortiter crebre 4 36 DESCRIPTIONS OF NEW SPECIES. punctatis, abdomine subtiliter parcius punctato, et longe piloso. Long. “Do. Texas. The punctures of the head, thorax, and elytra are furnished with short hairs; those of the abdomen with longer ones; the antenne are one-fourth longer than the head, and con- siderably thickened externally, the outer joints being fully twice as wide as long. The form of body is still more slender than in Ocypus ater. STAPHYLINUS Livy. 122. S. comes. Fusco-eneus, fulvo-pubescens, capite thoraceque den- sissime punctatis, hoc latitudine paulo longiore linea angusta dorsali levi, elytris dense subtiliter punctatis, fusco subvariegatis, abdomine supra bifariam nigro-maculato, apice piceo-rufo; subtus nigro-piceus, abdomine lateribus sericeo-maculatis, pedibus rufo-testaceis, femoribus nigro-maculatis, antennis nigro-piceis, articulo mo rufo-testaceo. Long. 50. Southern States; Dr. Zimmermann. Resembles in appearance S. maculosus, but is much smaller, with the medial smooth stripe of the thorax very distinct, and the legs brownish-yellow. The scutellum is covered with a dense patch of black hair. It is possible that it may be a light-colored variety of S. mys- ticus Er., a species unknown to me. 123. 8S. carbomatus. Niger nitidus, nigro-pubescens, capite tho- raceque confertim punctatis, illo linea levi antice obsoleta, hoc latitu- dine paulo longiore vitta dorsali levi notato, elytris dense punctulatis, abdomine immaculato, pedibus nigro-fuscis. Long. °50. Western States. Quite distinct by the above characters from any other species known to me. The sides of the thorax are parallel, or perhaps converge a little from the anterior angles. 124. 8. badipes. MMneo-niger, nigro-pubescens, capite thoraceque confertissime punctatis, linea angusta dorsali levi ornatis, hoc latitudine vix longiore, elytris dense punctulatis, abdomine segmentis 2—6 macula basali flavo-pubescente ornatis, antennis rufo-piceis, pedibus ferrugineis. Long. *50—-56. Midddle and Western States, as far north as Pembina, Minne- sota. ; DESCRIPTIONS OF NEW SPECIES. 37 125. S. cicatricosus. Alneo-niger, capite thoraceque nitidis, haud dense inequaliter grosse punctatis, pube erecta parce vestitis, elytris confertissime punctulatis, pubescentibus, scutello atro-tomentoso, abdo- mine subtiliter punctato, pubescente, bifariam nigro-maculato; antennis pedibusque nigris, variat elytris fusco-ferrugineis. Long. *50—-63.- Middle and Southern States, especially near the ocean. Not rare. Very distinct from all our other species by the punctures of the head and thorax being irregularly not closely placed ; the head has a large ill-defined smooth frontal space; the thorax is marked with a broad smooth dorsal vitta, and on each side of it an elongate smooth space. 126. 8S. ormaticamda. Niger, pubescens, capite thoraceque dense punctatis, hoc linea dorsali tenui levi, elytris confertissime punctulatis, nigro-fuscis, abdomine subtiliter punctulato, articulis 2—6 macula ro- tundata aureo-pilosa utrinque ornatis ; scutello colloque flavo-pilosis, antennis piceis, articulus duobus primis pedibusque obscure ferrugineis. Long. °58. Canada; Mr. Ulke. Very distinct from any other species known to me. The dorsal line of the thorax is very narrow, and a less distinctly defined one may be observed on the head; the punctures of the head and thorax are finer than usual, being almost as in S. tomentosus. The golden spots of the abdomen are very conspicuous, and are situated near the lateral margin on the anterior portion of the joints; similar but less definite spots are seen on the ventral segments, which are less densely and less finely punctured than the dorsal segments. The constriction of the head is fringed with yellow hairs ; and similar yellow hairs clothe the scutellum. PHILONTHWS Cortis. 12%. P. lepidulus. Linearis, rufo-piceus, nitidus, subtiliter pubes- cens, capite ovali utrinque punctis pluribus impresso, thorace rufo-tes- taceo, latitudine longiore, postice subangustato, seriebus dorsalibus 8—10 punctatis, punctisque utrinque paucis dispersis, elytris parce minus subtiliter punctatis apice flavo-marginatis, abdomine supra obscure fer- rugineo, obsolete parce punctulato, apice piceo, antennarum basi pedi- busque flavo-testaceis. Long. *13. Georgia, near the mountains. The punctures of the sides of the head and thorax are not numerous, and are widely separated. 38 DESCRIETIONS OF NEW SPECIES. 128. P. terminalis. Linearis, lete flavo-testaceus nitidus, subtiliter pubescens, capite ovali nigro, parce fortiter punctato, medio levi, thorace latitudine longiore, postice subangustato, parce fortiter punctato, vitta lata dorsali levi, elytris thorace longioribus, parce punctatis, nigris triente postico rufo-testaceis, abdomine parce punctulato, segmentis duobus ultimis supra et subtus nigris, postice testaceo-marginatis; pec- tore nigro, antennis fuscis basi testaceis. Long. *20. Maryland; Mr. J. P. Wild. 129. P. paederoides. Linearis, lete flavo-testaceus nitidus, subtili- ter pubescens, capite ovali nigro, parce fortiter punctato, medio levi, thorace latitudine longiore, postice subangustato, parce fortiter punctato, vitta lata dorsali levi, elytris thorace longioribus, sat dense subtiliter punctatis, cyaneo-nigris margine apicali flavo; abdomine confertim punctulato, segmentis duobus ultimis supra et subtus nigerrimis; pec- tore nigro, antennis nigro-piceis basi testaceis. Long. *17—-20. Western States, Lake Superior; found also at Fort Yuma and San Diego, California. A widely diffused species found on the margin of streams. 130. P. gratus. Linearis, lete rufo-testaceus nitidus, subtiliter pu- bescens, capite postice late rotundato, parce fortiter punctato, medio levi, thorace latitudine longiore lateribus parallelis, parce fortiter punc- tato, vitta dorsali lata levi, elytris thorace vix longioribus, punctatis, macula utrinqgue magna discoidali nigra ornatis, abdomine confertim punctulato, segmentis duobus ultimis supra et subtus nigerrimis ; pec- tore antennisque nigro-piceis, his basi testaceis. Long. :20. Colorado River, near Fort Yuma, California. 131. P. umbripennmis. Linearis, obscure rufo-testaceus nitidus subtiliter pubescens, capite oblongo, piceo, parce fortiter punctato, medio levi, thorace latitudine longiore lateribus parallelis, parce fortiter punc- tato, vitta lata dorsali levi, elytris thorace parum longioribus, subtiliter punctatis, nigro-piceis, margine apicali obscure testaceo, abdomine sub- tiliter haud dense punctato: subtus totus rufo-testaceus, pedibus pal- lidioribus. Long. ‘17. Middle States, rare. The antenne are wanting in the only specimen in my collection. The head is less elongated than in the species above described. 132. P. lithocharimnus. Elongatus, nigro-piceus, capite magno basi truncato, grosse punctato, vitta media levi, thorace latitudine longiore lateribus rectis, postice sensim paulo angustato, confertim le DESCRIPTIONS OF NEW SPECIES. 39 punctato, vitta dorsali levi, elytris subtiliter confertissime punctatis, pubescentibus, epipleuris macula que apicali obscure testacea utrinque ornatis, abdomine pubescente subtiliter dense punctato, ano testaceo, coxis femoribus abdominisque segmentis ventralibus plus minusve obscure ferrugineis. Long. °35. San Diego, California, under sea-weed. This and the follow- lowing species belong to a division of the genus which is repre- sented on the Atlantic coast only by P. bistriatus Er. They are totally unlike the ordinary species of Philonthus in appearance, but resemble Lithocharis. The only species previously described is P. femoralis Miklin, smaller and more slender than this, with the head finely punctured. Body dark blackish-brown, depressed. Head large, a little longer than wide, sides parallel behind the eyes, base truncate, hind angles rounded; surface very coarsely punctured, with a broad smooth medial stripe, which is broader in front; from the punctures proceed a few short gray hairs, or bristles. Antenne one-fourth longer than the head, not much thickened externally, 2d and 3d joints conical, the latter a little longer, following joints nearly equal, somewhat rounded. Thorax narrower than the head, longer than wide, gradually narrowed from the front angles to the base, which as well as the apex is broadly rounded; surface not finely, but tolerably closely punctured, with a broad smooth dorsal vitta. Elytra longer and wider than the thorax, very finely and densely punctured, clothed with short brown pubescence ; epipleure and a round apical spot half way between the suture and margin dull testaceous. Abdomen finely and densely punc- tured and pubescent, last two joints inclining to testaceous. Body beneath dark piceous; thighs sometimes ferruginous; ab- domen more or less dark ferruginous banded with black. In the male the 6th ventral segment is emarginate behind. The anterior tarsi are dilated in both sexes, 133. P. dubius. Valde elongatus, ater, capite ovato postice latiore, thoraceque sat fortiter punctatis, vitta dorsali levi signatis, hoe lati- tudine longiore, postice angustato, elytris thorace haud longioribus, ab- domineque confertissime subtiliter punctatis et griseo-pubescentibus. Long. *30. One male, San Diego, California. The head is scarcely wider than the thorax, a little wider behind the eyes, and broadly round- ed at the base. The antenne are as long as the head and thorax, 40 DESCRIPTIONS OF NEW SPECIES. slender, with the outer joints not thicker. The terminal ventral segments both above and below are inclined to become testaceous at the hind margins; the 6th ventral is emarginate, as in P. litho- charinus. 134. P. opacus. Depressus, opacus piceus, vel rufo-piceus, capite ovato, postice truncato fortius punctato, vitta dorsali levi, thorace piceo- ferrugineo, latitudine paulo longiore, postice angustato, confertim sat fortiter punctato, vitta dorsali levi, elytris thorace haud longioribus, abdomineque confertissime punctulatis et subtiliter pubescentibus. Long. °-27—-30. San Diego, under sea-weed. This species resembles in form P. lithocharinus, but is less slender, and the head is scarcely wider than the thorax. The antenne are as long as the head and thorax, and slender. The body is sometimes reddish-brown, with only the elytra and abdomen darker. The sexual ¢gharacters are as in P. lithocharinus. 135. P. decipiems. Elongatus, piceus vel piceo-rufus, capite obscuro, ovali postice truncato, grosse punctato, vitta media lata levi, thorace latitudine paulo longiore, postice subangustato, haud dense punctato, vitta dorsali levi, elytris opacis, thorace longioribus, ebdestneeg con- fertim punctulatis, et pubescentibus. Long. °20. San Diego, under sea-weed. The antenne are stout, and nearly as long as the head and thorax. The punctures of the thorax are not closely set, and tend to form rows. Sexual characters as in the preceding species, but the 6th ven- tral segment of the male is less deeply emarginate. 136. P. sulcicollis. Elongatus depressus, ater, capite magno, basi emarginato, grosse punctato, vitta lata levi, thorace latitudine longiore, postice sensim angustato, parce subseriatim punctato, vitta dorsali levi paulo elevato, sulco punctigero definita, elytris thorace longioribus ab- domineque confertissime punctatis et griseo-pubescentibus, pedibus ob- secure testaceis. Long. 25. San Diego, under sea-weed. Resembles closely P. bistriatus Er. of the Atlantic coast, and differs principally by the head being larger and flatter in the male, and the antenn.s somewhat shorter. 137. P. comfertus. Nigro-eneus, pube minus subtili griseo-cinerea vestitus, capite ovali, fortius punctato, plaga rhomboidea levi nitido, DESCRIPTIONS OF NEW SPECIES. 4] thorace latitudine haud breviore, ovato antrorsum modice angustato, confertim punctato, vitta dorsali levi nitida, elytris thorace haud longi- oribus, micantibus, dense subtilius punctatis, abdomine confertim punc- tulato, antennarum basi pedibusque testaceis, coxis piceis. Long. *33. Illinois and Nebraska. Of the ordinary form of Philonthus, but remarkable for the dense punctuation of the thorax. The antennx are piceous, with the first three joints testaceous, gradu- ally thickened externally, with the outer joints nearly square, and the last joint strongly acuminate beneath; the 3d joint is longer than the 2d or 4th. LEPTACINUS En. 138. L. flavipes. Nigro-piceus nitidus, capite crebre fortiter pune- tato, vitta angusta media levi, thorace oblongo-ovali utrinque parce punctato, seriebus dorsalibus 12—16 punctatis, elytris parce subtilius punctatis, pedibus flavo-testaceis. Long. °18. Middle and Western States; rare. The dorsal abdominal seg- ments are finely and sparsely punctulate. 139. L. longicollis. Nigro-piceus, vel piceus nitidus, parce setosus, capite contfertim punctato, vitta media levi, thorace elongato-ovali, pos- tice vix angustato, sat dense subtiliter punctato, vitta dorsali levi, ely- tris parce subtiliter punctatis, abdomine punctulato, ano, antennarum basi pedibusque testaceis. Long. +13. Middle States, usually in ants’ nests. The form of the thorax is different in the species of this genus from that observed in Leptolinus: in the latter it is elongate, narrowed behind, and feebly sinuate on the sides, as in ordinary Xantholinus; in Lep- tacinus it is elongate oval, scarcely narrowed behind, and broadly rounded on the sides. By an error this species has been placed in Leptolinus in the Catalogue. LEPTOLINUS Kraarz. 140. L. parcus. Niger, parce setosus, capite elongato oblongo, tho- raceque parcius haud profunde punctatis, vitta media levi male definita, elytris piceo-testaceis, parce punctatis, segmentis ventralibus postice pedibusque piceo-testaceis. Long. *26. California, San Jose; not rare. The antenne are thick, about one-fourth longer than the head; the abdomen is sparsely pune- tulate. 42 DESCRIPTIONS OF NEW SPECIES. 141. L. gramdiceps. Nigro-piceus, parce setosus, capite elongato, oblongo, parce fortiter punctato, thorace vage haud profunde punctato, vitta media levi male detfinita, elytris parce subtilius punctatis, abdo- mine subtiliter parce punctulato, postice segmentis abdominis ventrali- bus pedibusque testaceis. Long. *23—-26. San Francisco, California. Obviously different from the pre- ceding by the more strongly punctured head. 142. L. migripemmis. Rufo-piceus, parce setosus, capite crebre for- titer, thorace parcius punctato, vitta media levi notatis, elytris nigro- piceis parce punctatis, abdomine parce punctulato, segmentis supra et subtus postice testaceis, antennis pedibusque rufo-testaceis. Long. °25. One specimen, Louisiana; Dr. Schaum. 4 143. L. ruficollis. Ferrugineus, parce setosus, capite crebre fortiter, thorace parcius punctato, vitta levi média notatis, elytris nigro-piceis, parce subtilius punctatis, margine lato apicali et externo flavo, abdomine parce punctulato, nigro-piceo, segmentis postice testaceo-marginatis, pedi- bus flavo-testaceis. Long. :18—-20. Louisiana; Dr. Schaum. Smaller than the preceding, with the elytra more sparsely punctured. LATHROBIUM Grav. 144. L. sramde. Nigrum nitidum, subtiliter pubescens, capite tho- race sublatiore, punctato, parcius piloso, thorace latitudine longiore ovali profunde punctato, vitta dorsali levi, elytris punctatis, abdomine subtiliter punctulato, pedibus obscure rufo-piceis. Long. -40. Lake Superior to North Carolina; very rare. Our largest species. The male has the penultimate ventral segment acutely produced on the hind margin, and the last segment longitudinally broadly excavated for its whole length. 145. L. punctulatum. Nigrum nitidum parce pubescens, capite subtiliter antice parce punctato, plaga media indistincta levi, thorace latitudine longiore oblongo-ovali, fortiter punctato, vitta dorsali levi, elytris castaneis punctatis, abdomine alutaceo micante, pedibus anten- nisque ferrugineis, his extrorsum obscurioribus. Long. *27. A widely distributed species, found in New York, Georgia, Kansas, and at Lake Superior. The last ventral segment of the male is broadly excavated as in the preceding, but the penulti- mate is acutely emarginate behind at the middle. Varies with the elytra nearly black, the outer apical angle DESCRIPTIONS OF NEW SPECIES. 43 alone being brown; in such specimens the antenne are dark brown with only the base reddish-brown. 146. L.amgulare. Nigrum nitidum parce pubescens, capite parce punctato, medio levi, thorace latitudine longiore fortiter punctato, vitta dorsali levi, elytris punctatis macula apicali externa rafa, abdomine alutaceo, pedibus testaceis, antennis obscuris basi ferrugineis. Long. °25. Southern States and Canada. Closely allied to the preceding, but the head is not finely punctulate behind as in that species. Sexual characters as in L. punctulatum. 147. EL. migrum Nigrum subnitidum, parce pubescens, capite parce punctato, thorace sat dense minus fortiter punctato, vitta dorsali levi, elytris confertim subtilius punctatis et rugulosis, abdomine alutaceo, antennis pedibusque obscure piceis. Long. +20. Lake Superior. Resembles in characters ZL. angulare, but the thorax and elytra are more finely punctured. 148. L.jacobinum. Nigrum nitidum, capite sat dense profunde, medio parcius punctato, thorace latitudine longiore fortiter punctato, vitta dorsali levi, elytris sat dense punctatis et paulo rugosis, abdomine alutaceo, pedibus ferrugineis, antennis obscuris. Long. *28. San Diego, California. The antenne are thicker than in any of the preceding species, but less so than in L. punceticolle. 149. L. pedale. Nigro-piceum nitidum, capite thorace paulo latiore sat dense punctato, thorace latitudine longiore fortiter punctato, vitta dorsali levi, elytris subtiliter parce punctatis, abdomine punctulato, Segmentis piceo-marginatis, antennis crassiusculis obscure ferrugineis, pedibus flavo-testaceis. Long. °32. Mississippi; Dr. Schaum. The preceding species have very slender antenne; in this and the two following they are thicker and somewhat moniliform, though much less so than in L. pune- ticolle or L. brevipenne. 150. L. simile. Nigrum nitidum, capite parce grosse punctato, tho- race latitudine longiore subtilius punctato, vitta dorsali levi, elytris subtiliter parce punctatis, ano rufescente, antennis crassiusculis obscure ferrugineis, pedibus flavo-testaceis. Long. *30. Middle States; rare. The antenne are tolerably slender, but less so than in LZ. angulare. The last ventral segment of the male, as usual, is longitudinally excavated, the two preceding are 44 DESCRIPTIONS OF NEW SPECIES. longitudinally impressed, and the penultimate is deeply and broadly emarginate. 151. L. comcolor. Nigrum nitidum, capite parce, thorace profunde punctatis, hoc vitta dorsali levi, elytris parce subtiliter punctatis, an- tennis crassiusculis obscure ferrugineis, pedibus flavo-testaceis. Long. *28—"31. ’ Western States, and north Shore of Lake Superior. Nearly resembles L. pedale, but differs by the thorax being more strongly punctured, and the general form of body more slender and more convex. ‘The sexual characters are as in the last species. 152. L. temue. Valde elongatum cylindricum nigrum, capite parce punctato, thorace latitudine sesqui longiore, parce fortiter punctato, vitta dorsali levi; elytris parce punctatis, abdomine subtilissime punctato, antennis crassiusculis rufo-piceis, pedibus ferrugineis. Long. *22. One female, New York. Much smaller and more slender than ZL. concolor, with the antenne comparatively stouter and the thorax longer. 153. L. brevipenne. Nigro-piceum nitidum, capite punctis paucis impresso, medio levi, thorace latitudine longiore, utrinque parce grosse punctato, vitta lata dorsali levi, elytris thorace fere sesqui brevioribus, convexis fortiter haud dense punctatis, castaneo-tinctis, abdomine sub- tiliter punctato, antennis piceis crassis, pedibus piceo-rufis. Long. °32. Illinois; Mr. Willeox. A very distinct species; the antennz are as stout as in L. puncticolle. 154. L. califormicum. Depressiusculum, nigrum nitidum, capite punctis paucis versus latera notato, thorace latitudine longiore, versus latera parce subtiliter punctato, vitta dorsali levi seriebus 12—15 punc- tatis definita, elytris subtiliter fere seriatim punctatis, abdomine punc- tulato, segmentis postice testaceo-marginatis, antennis gracilibus pedi- busque nigro-piceis. Long. °25. San Jose, California; only females in my collection. 155. L.seriatum. Nigrum pernitidum, cylindricum, capite punctis paucis dispersis notato, thorace latitudine longiore ad latera parce, versus medium biseriatim punctato, elytris fortiter seriatim punctatis, abdomine subtiliter parce punctulato, ano rufo-testaceo, antennis gracilibus, palpis pedibusque ferrugineis. Long. °23. One male, South Carolina; Dr. C. Zimmermann. The fourth ventral segment is transversely impressed near the posterior mar- DESCRIPTIONS OF NEW SPECIES. 45 gin, and the fifth feebly impressed and emarginate behind. The anterior thighs are feebly sinuate beneath, but not toothed. Several small species in my collection are yet nondeseript, but the want of time prevents me from making them known in the present publication. CRYPTOBIUM Mayy. 156. C. pimeriamum. Nigro-piceum, nitidum, capite confertim fortiter punctato, thorace angustiore, latitudine longiore parce fortiter punctato, vitta lata dorsali levi, elytris thorace longioribus, fortiter dense punctatis, margine apicali rufescente, abdomine piceo punctato, seg- mentis postice late rufo-marginatis, ventre pedibusque rufo-piceis. Long. °39. Valley of Colorado and Gila, California. The head is wider and more thickly punctured than in C. bicolor, and the elytra less coarsely but more densely punctured. In the male the 2d and 3d ventral segments are deeply foveate at the middle; the 3d is prolonged behind into a large obtuse process extending over the 4th segment. 157. C.sellatum. Nigrum nitidum, capite confertim punctato, aniice levi, thorace latitudine fere sesqui longiore, parce subseriatim punctato, vitta lata dorsali levi, elytris dense punctatis, thorace longioribus, lete rufis, vitta suturali communi a basi ad dodrantem extensa, abdomine punctulato; ore antennisque obscure, pedibus lete testaceis. Long. *35. Illinois, rare. The sixth ventral segment of the male is acutely emarginate behind. A very beautiful and distinct species. 158. C. despectum. Valde elongatum, nigrum subnitidum, capite confertim subtilius punctato, fronte levi, thorace latitudine longiore, nitido, minus subtiliter sat crebre punctato, vitta dorsali levi angusta, elytris dense punctatis, limbo apicali tenui testaceo, abdomine parce vix conspicue punctulato, antennis palpisque obscure rufis, pedibus flavis. Long. °26. Louisiana; Dr. Schaum. In the male the third ventral seg- ment is prolonged into a broad rounded process extending to the middle of the fifth joint, and clethed with very long divergent hairs. 159. C. pusillum. Valde elongatum lineare, nigrum, capite tho- racique rude sat dense punctatis, hoc vitta dorsali angusta ivi, elytris fortiter punctatis, thorace subbrevioribus, abdomine subtiliter haud dense puuctato, ore, antennis palpis pedibusque flavo-testaceis. Long. *20. 46 DESCRIPTIONS OF NEW SPECIES. One male from the sea shore of Long Island, N. York. Re- markably different in size and sculpture from our other species. The head, thorax, and elytra are nearly of the same width, and the body is ‘more cylindrical than usual. The sixth ventral seg- ment is widely cleft to the base, with the sides of the cleft paral- lel; the fifth is scarcely perceptibly impressed at the tip. 160. C. cribratum. VNigrum, capite thoraceque pernitidis, illo elon- gato, punctis perpaucis notato, thorace latitudine sesqui longiore, seriebus dorsalibus 7—9 punctatis, punctisque paucis subtilibus versus latera, elytris lete rufis, sutura antice basique nigricante, punctis magnis serie- bus utrinque 8 vel 9 positis, abdomine subtiliter profunde puuctato, antennis rufis, pedibus pallidis. Long. °38. Illinois, rare. The sixth ventral segment of the male has a small triangular emargination behind. 1G. C.serpentimum. Valde elongatum, nitidum, capite punctis paucis notato, ante oculos nigerrimo, pone oculos lete rufo oblique an- gustato, thorace parce subseriatim punctato, nigerrimo, antrorsum paulo angustato, elytris thorace longioribus rufo-testaceis, fortiter subseriatim punctatis, macula communi scutellari nigro; abdomine parce subtiliter punctato lete rufo, segmento primo ultimisque duobus nigris, palpis pedibus antennisque rufo-testaceis, his articulis 2—7 infuscatis. Long. °38. Pennsylvania and Alabama. By the singular form of the head this species recalls the genus Ophites Kr. The color beneath is black, with the 2d, 3d, 4th, and base of 5th ventral segments red-testaceous. The 6th ventral segment of the male is triangu- larly incised at tip. STELECUS Larr. 162. 8. rudis. /Eneo-niger opacus, capite thoraceque confluenter for- titer punctatis, hoc subtiliter canaliculato, linea tenui dorsali levi, elytris subtiliter punctatis nitidis limbo apicali pallido, abdomine sub- tiliter punctulato, pedibus antennisque rufo-testaceis. Long. -19. Pennsylvania, rare. Twice the size of S. dentatus, with the head and thorax less coarsely punctured. ECHIASTER Er. 163. E. opacus. Valde elongatus, piceo-niger, omnium subtilissime punctulatus, pube subtili cinerea vestitus, elytris limbo apicali flavo, DESCRIPTIONS OF NEW SPECIES. 47 abdomine segmentis postice testaceo-marginatis, antennis rufis, femori- bus flavo-testaceis, tibiis tarsisque infuscatis. Long. +16. Southern States, common. The last ventral segment of the male is deeply cleft, and the penultimate is broadly emarginate ; the fourth joint has three small tubercles, and the fifth joint is deeply excavated. 164, E. nitidus. Valde elongatus, piceo-rufus nitidus, parce pilosel- lus, levis, elytris ante apicem, abdominisque segmentis tribus posticis obscurioribus. Long. +12. Louisiana; Dr. Schaum. These two species resemble in form Stilicus, but the first joint of the antenne is longer, being equal to the three following ones united. DACNOCHILUS Lec. 165. D. letus. Elongatus cylindricus, lete rufo-testaceus nitidus, parce pilosellus, capite postice fere truncato, punctis perpaucis laterali- bus notato, thorace latitudine haud longiore antice truncato angulis rectis, postice late rotundato angulis rotundatis, punctis paucis versus ~ latera notato, elytris a basi ad trientem nigerrimis, vage tri- vel 4-seri- atim punctatis, abdomine vix parce punctulato. Long. *20. South Carolina and Louisiana; rare. Body cylindrical, bright yellowish-red, shining, with a few scattered erect hairs. Head not longer than wide, convex, sides parallel behind the cyes, base very broadly rounded, hind angles rectangular, rounded at tip, surface smooth with a few scattered large punctures; antennx longer than the head and thorax, gradually thickened externally, 3d joint longer than the 4th and equal to the Ist. Thorax quad- rate, slightly narrowed behind, nearly truncate in front, broadly rounded at base, convex, with a few punctures arranged in rows, of which those nearest the middle contain 4 or 5 punctures, anterior angles not rounded, posterior ones broadly rounded. Elytra convex, not longer than the thorax, with the basal third black; a few distinct punctures are arranged in 3 or 4 rows, each containing 6 or 7 punctures; sutural stria distinct. Abdomen very finely but sparsely punctulate. In the male the 6th ventral segment is broadly emarginate and longitudinally impressed. The genus Dacnochilus is readily distinguished by the labrum acutely emarginate and impressed at the middle, by the almost 48 DESCRIPTIONS OF NEW SPECIES. invisible last joint of maxillary palpi, and the joints of the hind tarsi gradually diminishing in length; the neck is moderately thick, as in Lathrobium. It would seem more nearly related to Scimbalium than to any other foreign genus, but the convex body at once distinguishes it. SUNIAUS Sreru. 166. S. monstrosus. Capite thoraceque nigris, parce pubescentibus, ’ confertim punctatis, illo antice utrinque impresso, hoc latitudine paulo longiore, postice rotundato, antice angustato et producto, lateribus inde antice sinuatis, disco postice utrinque curvatim impresso, linea dorsali levi parum conspicua, elytris testaceis planiusculis fortiter punctatis, abdomine punctulato piceo, segmentis anticis testaceo-marginatis, ulti- mis duobus testaceis, ore antennis pedibusque testaceis. Long. °18. Louisiana; Dr. Schaum. Resembles in form a Stilicus. PARDERUS Grav. 167. P. compotens. Rufus nitidus, capite metasterno segmentisque abdominis duobus ultimis nigris, elytris cyaneis, confertim punctatis ; antennis nigro-piceis, articulis 3 primis rufis, pedibus obscure rufis. Long. °28. Sacramento Valley, California; Mr. S. 8. Rathvon. Resem- bles P. littorarius, but is larger, and the elytra are much less coarsely punctured. PINOGOPHILUS Grav. 168. P. parcus. Niger subopacus, capite thoraceque dense punctu- latis, illo antice parce grosse punctato, hoc punctis magnis haud pro- fundis sparsim positis, elytris dense profunde punctatis, abdomine sub- tiliter profunde punctato, antennis palpis pedibusque flavis. Long. 48 — 52. Southern States; not rare. Smaller and more slender than P. latipes, with the head and thorax more densely punctulate. £69. P. densus. Niger subopacus, capite parce grosse punctato, punc- tulis minutis parcis interspersis, thorace elytrisque profunde fortiter punctatis, illo linea dorsali levi parum conspicua, abdomine subtilius punctato, antennis palpis pedibusque flavo-testaceis. Long. 37. Colorado and Gila valleys, California. Of the same form as P. latipes, but much smaller. DESCRIPTIONS OF NEW SPECIES. 49 170. P. opacus. Niger, subopacus, capite thoraceque nitidis, illo parce grosse punctato, et punctulato, hoc fortiter crebre punctato, elytris profunde dense punctatis, abdomine subtilius punctato, antennis palpis pedibusque flavo-testaceis. Long. *32—*37. Georgia. More slender than the preceding, being of the same form as P. parcus. PALAMINUS Er. 171. P. pallipes. Nigro-piceus nitidus, capite fortiter haud dense punctato, thorace obovato, latitudine haud breviore, parce grosse punc- tato, elytris thorace latioribus et sesqui longioribus, piceo-testaceis for- titer punctatis, abdomine bifariam (sicutin speciebus alteris) reticulato, ° antennis palpis pedibusque pallide testaceis. Long. +20. Atlanta, Georgia. A specimen kindly given me by Col. Mot- schulsky. Larger in size and different in color from our other species. 172. P. lividus. Fiavo-testaceus, nitidus, capite thoraceque punctis perpaucis notatis, hoc obovato, latitudine haud breviore, elytris thorace haud latioribus et paulo longioribus parce fortiter punctatis, abdomine rufo-piceo, reticulato. Long. :15. One specimen found on leaves of Salix, at Fort Yuma, Cali- fornia. Similar in appearance to P. festaceus, but the thorax is not transverse and has a much more sparse punctuation, and the elytra are shorter. 173. P. larwalis. Testaceus nitidus, eapite choraceque punctis pau- cis grossis sparsis notatis, hoc latitudine haud breviore obovato, elytris thorace nec latioribus nec longioribus, grosse haud dense punctatis, abdomine piceo, fortiter reticulato. Long. °13. Long Island, near New York, under moss. Differs from all the preceding species by the shorter and more coarsely punctured elytra. DEANOUWS Corts. 174. D. chalybeus. Nigro-ceruleus nitidulus, subtiliter albo-pubes- cens, thorace subtilius punctato, elytris macula rotundata rubra utrinque ornatis. Long. ‘19. Marquette, Lake Superior, on the shore of the lake, under pieces of wood, in July. This species agrees precisely with Erichson’s description of the European D. corulescens, but on 50 DESCRIPTIONS OF NEW SPECIES. comparison of specimens I find that in ours the punctures of the thorax are considerably smaller; the punctures of the elytra are also less densely placed, but in this respect the difference is by no means obvious. | STENUS Lartr. 175. 8. remifer. Niger opacus, fortiter dense punctatus, albo-pubescens, thorace latitudine longiore, elytris macula minuta lunata fulva, antennis fuscis, palpis pedibusque pallidis, femoribus apice late infuscatis. Long. 22. Fort Yuma, California. Very similar to S. colon, but the ely- tral spot is smaller and lunate in form, and the thorax is more narrowed at tip; in S. colon the spot is larger, and though also emarginate in front, is not lunate. 176. 8. semicolon. Niger subznescens, subtiliter albo-pubescens, fortiter dense punctatus, thorace latitudine longiore, elytris gutta minuta rotundata fulva, antennis palpisque nigro-piceis, his articulo lmo testa- ceo, pedibus ferrugineis. Long. °15. One specimen, Pennsylvania. Quite distinct by the above cha- racters. Less slender in form than the other species with spotted elytra. 177. 8. comma. Niger subenescens, subtilissime albo-pubescens, fortiter dense punctatus, thorace latitudine longiore, utrinque fere equa~ liter angustato, elytris gutta parva rotundata fulva, palpis basi testaceis, antennis pedibusque nigris. Long. °20. Middle and Western States; not rare. EDAPHUS Lec. 178. E. mitidus. Testaceus nitidus, glaber, levis, capite biimpresso, thorace latitudine fere breviore, subcordato postice angustato, ante basin foveis 4 magnis insculpto; elytris stria suturali vix conspicua. Long. “04. Alabama and Louisiana; Col. Motschulsky and Dr. Schaum. This inseet might be readily considered as a Pselaphide, allied to Kuplectus, but the tarsi are four-jointed, and the abdomen is flex- ile. The antenne and palpi are as in Euesthetus, from which this genus differs principally by the smooth impunctured body. DESCRIPTIONS OF NEW SPECIES. 51] MEGALOPS En. 179. M. rufipes. Niger nitidus, capite grosse parce punctate, thorace latitudine paulo breviore, lateribus vix obsolete denticulatis, transversimn biimpresso, callogue magno medio signato, depressionibus grosse punc- tatis, elytris fere biseriatim fortiter punctatis, macula humerali alteraque interna apicali rufis, antennis pedibusque rufo-testaceis. Long. -09. Atlanta, Georgia. The only specimen found by him I owe to the liberality of Col. Motschulsky. OXYPORUS Fasr. 180. OG. rufipennis. Niger nitidus, thorace obovato, latitudine paulo breviore, lateribus magis rotundatis, elytris bistriatis, lete rufis, margine basali anguloque externo nigris. Long. *35—-43. Western States. Allied to O. major, but the thorax is more rounded on the sides and destitute of transverse impressions, and the elytra are differently colored. 181. 0. quinquemaculatus. Lete rufo-testaceus nitidus, capite nigro, macula magna postica rufo-testaceo, thorace subquadrato, lateri- bus antice rotundatis, postice fere parallelis, angulis posticis rectis late rotundatis paulo explanatis, macula magna laterali nigro-picea utrinque ornato, elytris bistriatis, macula communi scutellari angulogque externo nigro-piceis, abdomine segmentis anticis medio, ultimisque tribus totis nigris, antennis piceis articulis 1—3, ultimoque testaceis. Long. °28. Pennsylvania, York County; Dr. Melsheimer. The sides of prothorax beneath, the side pieces of the metasternum, and the last ventral segments are black. This species differs from all the others by the hind angles of the thorax, which, though rounded, are quite prominent and flattened. BLEDIUS Srepa. 182. B.armatus. Nigro-piceus, parum nitidus, capite subtiliter gra- nulato, supra antennas alte obtuse carinato, vertice tuberculo nitido canaliculato munito, thorace subtiliter granulato, parce haud profunde punctato, elytris sat dense punctatis nitidis, lateribus late indeterminate obscure piceo-rufis, antennis pedibusque piceo-rufis, coxis nigro-piceis. Long. *20—-25. San Francisco, California. Resembles the next two species, but is readily distinguished by the characters above noted. Spe- cimens very nearly resembling those found at San Francisco have 52 DESCRIPTIONS OF NEW SPECIES. been found in Arizona and Nebraska, and I am inclined to refer them to the same species, and to regard it as the Oxylelus arma- tus described by Say from immature specimens. 18S. B. fumatus. Nigro-piceus, subnitidus, capite punctis paucis parvis notato, subtiliter granulato, supra antennas breviter elevato, tho- race canaliculato, fortiter parce punctato, elytris sat dense punctatis, lateribus late rufescentibus, abdomine rufo-piceo, ano pallidiore, anten- narum basi coxis pedibusque obseure rufis. Long. °25. Western States. The absence of the tubercle at the middle of the head distinguishes this from B. armatus. i184. B.semiferrugimeus. Capite thoraceque nigro-piceis, rude punctatis, hoc canaliculato, illo supra antennas breviter alte elevato, fovea parva occipitali notato, elytris sat dense punctatis, ferrugineis. basi suturaque nigricantibus, abdomine antennarumque basi rufo-piceis, pedibus testaceis. Long. :20. Middle States. The thorax is more convex and rounded than in the two preceding species, and much more coarsely punctured. 185. B. flavipenmis. Capite nigro-piceo, granulato haud punctato, supra antennas elevato, fovea minuta occipitali notato, thorace rufo-piceo lateribus antice haud rotundatis, subtiliter canaliculato, granulato parce haud profunde punctato, elytris flavis sutura nigricante, nitidis parce punctatis, abdomine nigro-piceo, segmentis duobus ultimis pallidis, an- tennis basi ferrugineis, pedibus testaceis. Long. °17. * San Diego, California; in salt marsh. 186. B. amalis. Rufus, ano sutura capite thoraceque nigris; capite utrinque subelevato, et parce subtiliter punctato, thorace polito profunde punctato, subtiliter canaliculato, lateribus late rotundatis, elytris sat dense punctatis; metasterno nigro. Long. -16. Illinois. The last two abdominal segments are black. | 18%. B. mitidicollis. Nigro-piceus, capite utrinque subelevato, et parce punctulato, thorace latitudine fere breviore lateribus late rotunda- i tis, nitido profunde punctato, vitta dorsali levi, elytris obscure ferrugi- neis, basi et sutura infuscatis, modice punctatis, antennis pedibusque ferrugineis. Long. :14. One specimen; New York. 188. B. diagomalis. Niger brevissime pubescens, capite lateribus breviter elevato, thorace latitudine subbreviore, lateribus rotundatis, DESCRIPTIONS OF NEW SPECIES. 53 subtiliter parce punctato, et subtiliter canaliculato, elytris dense sub- tiliter punctatis, ferrugineis, macula magna nigra triangulari communi a basi fere ad apicem extensa, antennis piceis, basi pedibusque ferrugineis. Long. 20. One specimen found at San Diego, California, in salt marsh. 189. B. ornatus. Niger brevissime pubescens, capite thoraceque opa- cis, hoc latitudine subbreviore lateribus rotundatis, obsolete punctulato, subtiliter canaliculato, elytris dense subtiliter punctatis, margine laterali maculaque externa apicali albidis, antennis crassiusculis piceis, pedibus testaceis. Long. ‘18. One specimen, San Francisco, California. The spot extends inwards from the outer angle and forms a rounded lobe to the white lateral margin. 190. B. divisus. Niger brevissime pubescens, capite thoraceque opa- cis haud dense subtiliter punctatis, illo lateribus parum elevatis, hoc lateribus rotundatis, basi breviter sinuatis, subtiliter canaliculato, ely- tris confertim punctatis, extrorsum diagonaliter pallidis, antennis pedi- busque nigro-piceis, tibiis basi pallidoribus. Long. -14. Platte River Valley, one specimen; Point Keweenaw, Lake Superior. In the specimens from the latter locality the pale sides of the elytra are not limited by a diagonal line from the humerus nearly to the apex, but are narrower and defined by a curved line. I cannot, however, perceive any difference in form or sculpture to warrant me in considering them as indicating a different species. In one specimen the elytra are pale, dusky only at the base, and the abdomen is piceous, with each segment annulate with black, and marked with a medial blackish spot. It is possible that Ory- telus fasciatus Say may be a variety of this species. 191. B.annularis. Nigro-piceus, capite opaco, utrinque parum ele- vato et parce punctato fovea occipitali notato, thorace lateribus rotunda- tis, vage haud profunde punctato, subtiliter canaliculato, elytris fortiter punctatis, obscure ferrugineis, abdomine sepius rufo-piceo, nigro-annu- lato, apice nigro, antennis pedibusque ferrugineis. Long. *15—-18. Middle and Western States, and Lake Superior. 192. B. ruficornis. Niger, capite opaco, vage punctulato, fovea oc- cipitali nulla, thorace lateribus rotundatis, opaco, vage profunde punc- tato, subtiliter canaliculato, elytris densius punctatis, nigro-piceis, apice rufescentibus, antennis piceis, basi pedibusque ferrugineis. Long. -21. One specimen, San Francisco; Mr. Henry N. Bolander. Ke- 54 DESCRIPTIONS OF NEW SPECIES. sembles the preceding species, but the elytra are more finely and densely punctured. An entirely similar specimen was given me by Mr. Ulke, as found in Canada. 193. B. suturalis. Niger, capite opaco, fovea occipitali notato, tho- race lateribus rotundato, canaliculato, parce haud profunde punctato, elytris profunde punctatis, pallidis basi suturaque nigricantibus, anten- nis piceis basi pedibusque testaceis. Long. :12. Banks of the Gila River, Arizona. ‘ 194. B. basalis. Niger, capite thoraceque opacis, illo parce punctu- lato, hoc subtiliter haud dense punctato, canaliculato, lateribus antice subparallelis late rotundatis, elytris subtiliter punctatis, albidis margine basali nigricante, antennis piceis basi testaceis, femoribus piceis, tibiis tarsisque testaceis. Long. -10. Coney Island, New York, in salt marsh; abundant. Varies with the suture also blackish. 195. B. opaculus. Nigro-piceus opacus, brevissime pubescens, ¢a- pite thoraceque parce punctulatis, hoc haud canaliculato, lateribus antice fere parallelis, elytris dense subtiliter punctato-rugosis, testaceis basi suturaque infuscatis, antennis piceis, pedibus piceo-testaceis, mandibulis testaceis elongatis medio dente parvo armatis. Long. 13. Coast of Maine; Mr. W. Stimpson. Quite distinct by its sculpture from all others known to me. 196. B. forcipatus. Niger, brevissime pubescens, capite thoraceque opacis, parce punctulatis, hoc subtiliter canaliculato, lateribus fere pa-~ rallelis, elytris pallidis basi suturaque infuscatis, subtiliter punctatis, antennis fuscis, basi pedibusque testaceis, mandibulis testaceis, elongatis dente acuto medio armatis. Long. :(08. Fort Yuma, California. This and the preceding species are remarkable for the length of the mandibles. HAPLODERUS Sreru. 19%. H. limearis. Elongatus depressus, piceus nitidus, capite parce punctato, occipite breviter canaliculato, thorace latitudine sesqui bre- viore, irregulariter parce punctato, longitudinaliter vage biimpresso, vitta dorsali levi, elytris piceo-testaceis profunde punctatis, pedibus testaceis. Long. °12. California and Oregon. The thorax is but slightly narrowed behind. DESCRIPTIONS OF NEW SPECIES. 55 198. H. laticollis. Piceus depressus, subtiliter pubescens, capite biimpresso, thorace latitudine sesqui breviore postice fortiter angustato, dense punctulato, margine explanato, disco fortius curvatim biimpresso, postice subcarinato, elytris profunde punctatis, pedibus piceo-testaceis. Long. *10. Southern States; Dr. C. Zimmermann. LESTEVA Larr. 199. L. biguttula. Nigro-picea, pubescens, capite biimpresso, tho- raceque confertim subtiliter punctatis, hoc latitudine haud breviore sub- cordato, ante basin vage transversim impresso, disco obsolete bifoveato, elytris confertim subtiliter punctatis, piceis macula obliqua testacea ante medium utrinque ornatis, limbo suturali et apicali pallidiore, ore anten- narum basi pedibusque testaceis. Long. +11. North shore of Lake Superior. 200, L. pallipes. Nigra nitida, pubescens, capite biimpresso tho- raceque haud dense punctatis, hoc convexo subcordato, pone medium vage biimpresso, impressionibus postice arcuatim conjunctis, elytris subtiliter haud dense punctatis, antennis piceis, basi pedibusque flavo- testaceis. Long. -11—:14. Pennsylvania and Maryland; rare. 201. L. picescems. Piceo-testacea pubescens, capite nigro biimpres- so, parce punctulato, thorace subcordato, parce punctulato, elytris sub- tiliter punctatis, piceis limbo omni maculaque obliqua piceo-testaceis, ventre piveo-testaceo apice obscuro, antennarum basi pedibusque flavo- testaceis. Long. °15. Alabama; Prof. 8. S. Haldeman. ACIDOTA StTrpu. 202. A. seriata. Nigro-picea nitida, thorace lateribus magis rotundatis, late marginatis piceis, fortiter punctato, vitta dorsali angusta abbreviata levi parum distincta, elytris fortiter seriatim punctatis, antennis pedi- busque rufis, abdomine parce punctato. Long. *21. Lake Superior, under pieces of wood and stone on the shores; sometimes very abundant: smells very offensively. This species agrees with Erichson’s description of the European A. crenata, but I have not compared specimens. 203. A. temuis. Picea nitida, capite thoraceque parce subtiliter punc- tatis, hoc latitudine breviore, antice parum angustato, lateribus late 56 DESCRIPTIONS OF NEW SPECIES, rotundatis ante medium postice depressis, elytris confertim subtiliter punctatis, limbo apicali pallidiore, antennis pedibusque rufis, abdomine parce punctulato. Long. :15. One specimen, north shore of Lake Superior. The disc of the thorax is broadly and uniformly convex in front, but a little before the middle is a lateral impression which flattens the margin from that point almost to the base: at the middle just in front of the base is a very vague scarcely discernible curved impression. 204. A. patruelis. Elongata, picea, fortiter punctata, thorace lati- tudine haud breviore, antice paulo angustato, lateribus modice rotundatis fortiter marginatis subtiliter subrepandis, elytris planiusculis late marginatis, abdomine subtiliter rugose punctulato, antennis pedibusque piceis. Long. -12—-15. North side of Lake Superior. The first joint of the hind tarsi is not conspicuously longer than the others, and I am by no means convinced that this species is properly referred to the present genus. The lateral margin of the thorax is very finely undulated, giving a slightly repand appearance. AMPHICHROUOM Kraarz. 205. A. floribumdum. (Mas) nigro-piceum nitidum, capite thora- ceque parce subtiliter punctatis, hoc latitudine paulo breviore, lateribus rotundatis, margine fortiter depresso testaceo postice paulo latiore, ante basin transversim impresso et parce punctato, elytris subtilius modice punctatis, umbra humerali testacea ornatis, abdomine levi, antennis pedibusque piceis, illis basi testaceis. Long. °20. Femina, antennis, pedibus, thorace elytrisque testaceis his sutura infus- cata. San Francisco, California; on Spirza, abundant. Resembles in form A. testaceum, but the head and thorax are shining and distinctly punctulate, and the thorax is more convex. TRIGONODEMUS Lec. Mandibule breves mutice; palpi maxillares articulo ultimo precedente fere duplo longiore ; antennz articulis 2—4 tenuibus, 3io longiore, 5—11 abrupte majoribus rotundatis; tibia parce spinulose, antice infra medium jintus late emarginatis; tarsi postici tibiis duplo breviores, articulo 1mo sequentes duos equante. This genus is founded on a very rare insect of the Southern States, which resembles in form the anomalous European genus : ‘ : i DESCRIPTIONS OF NEW SPECIES. oT Trigonurus Muls., with which I should associate it but for the presence of very distinct ocelli. The head is narrow, with two deep oblique impressious, at the hinder end of which, on a line with the posterior limit of the eyes, are the ocelli. ‘The thorax is gradually widened behind, the anterior angles rounded, the posterior ones rectangular; the base is truncate. The elytra are wider than the thorax, very long, leaving exposed only two dorsal segments, and broadly rounded at tip: they have each 9 punc- tured striz, and the alternate intervals have a few distant punc- tures. The abdomen is acute at tip 206. T. striatus. Nigro piceus, capite parce thorace fortiter haud dense punctato, disco utrinque oblique impresso, lateribus rufo-testaceis postice explanatis, elytris profunde striato-punctatis, vitta rufo-testacea a humero fere ad apicem extensa, antennarum basi pedibusque testaceis. Long. :18. One specimen, given me by Dr. C. Zimmermann. The sutural stria curves around the tip of the elytra and runs into the outer margin, the 2d unites with the external stria (9th), the 3d with the 4th, and the 5th with the 8th, enclosing the extremities of the 6th and 7th. MICRALWMMA Westwoop. 20%. M. stimpsonii. Nigrum fere opacum, punctulatum, thorace latitudine breviore, vitta angusta dorsali impunctata, elytris thorace haud longioribus, abdomine latiore, antennis articulo dio tenui sequente longiore. Long. °12. Coast of Maine; collected by my friend Wm. Stimpson, to whom I dedicate it as a slight acknowledgment of his most va- luable researches in marine invertebrate zoology. This species is twice the size of the Greenland species, JZ. bre- vilingue, and is readily distinguished by its dull, equably punctu- late surface, and the thinner 3d joint of antenne. The thorax is destitute of impressions. CORYWPHIUM Sreps. 208. C. pallidum. Fusco-testaceum fortiter punctatum, thorace latitudine haud breviore, postice parum angustato lateribus serrulatis, elytris fusco pallidoque variegatis. Long. :12. Kansas, one specimen, The fuscous marks of thé elytra con- t 58 DESCRIPTIONS OF NEW SPECIES. sist of a sinuated vitta extending from the humerus to the tip near the suture; the external margin is also dark. 2069. C. guttatum. Nigrun, fortiter punctatum, thorace latitudine haud breviore, postice modice angustato, lateribus obsolete serrulatis, callo dorsali pone medium levi, elytris gutta rotundata pone medium margineque apicali rufo-testaceis ; antennis pedibusque rufis. Long. -10. Southern States. 210. C. motatum. Nigrum fortiter punctatum, thorace latitudine haud breviore, postice paulo angustato, lateribus serrulatis, callo postico dorsali; elytris gutta minuta ad medium margineque angusto apicali ru- fo-testaceis ; antennis pedibusque rufo-testaceis. Long. °10. One specimen, Pennsylvania. Differs from the preceding by the spot being smaller and not posterior to the middle of the elytra. The dorsal segments of the abdomen in all the species are finely punctulate. PROTEINUS Lartr. 201. P. parvulus. Niger nitidulus subtiliter pubescens, elytris pi- ceis confertim punctulatis, margine apicali pallidiore, antennarum arti- culis duobus primis pedibusque testaceis. Long. *05. Lake Superior. Similar in size and form to P. basalis, but the base of the elytra is not reddish. MEGARTHRUS Sreru. 212. M.excisus. Longiusculus, piceus, confertim punctatus, thorace canaliculato latitudine plus duplo breviore, antrorsum angustato, late- ribus late rotundatis subrepandis, ad basin rotundatim emarginatis, angu- lis posticis minutis rectis, antennarum articulo primo peaibusque piceo- testaceis. Long. :10. Lake Superior, one specimen. Narrower than JZ americanus, with a differently shaped thorax. ISOMALUS Er. 213. I. pallidus. Testaceo-rufus nitidus, capite thorace elytrisque parce subtiliter punctulatis, thorace obovato, subtilissime canaliculato, utrinque oblique vage impresso, in margine apicali utrinque bifoveato, abdomine antice infuscato, segmentis singulis utrinque 2 vel 3 punctatis. Long. *14. Pennsylvania, Lancaster Co., in ants’ nests; very rare. oe ee ee we ae & DESCRIPTIONS OF NEW SPECIES, 59 214. I. fasciatus. Niger nitidus, levis, thorace obovato, lateribus obsolete denticulatis late oblique biimpresso, in margine apicali utrinque bifoveato, elytris flavis macula scutellari limboque externo et apicali nigris, subtus nigro-piceus, antennis pedibusque ferrugineis. Long. ‘10. Valley of Gila River, Arizona; under bark of cotton-wood, abundant. 215. I. migrellus. Niger, nitidus, subtiliter strigosus, capite bifove- ato, thorace latitudine longiore, fere ovali, lateribus late rotundatis, disco vage et late biimpresso, linea tenui dorsali levi, in margine apicali utrin- que plica minuta externa, elytris parce subtilissime punctulatis. Long. “10. California, at San Jose and Fort Tejon; under oak bark. | HYPOTELUS Er. 216. H. picipennis. Depressus, nigro-piceus subopacus, punctatus, thorace latitudine breviore, subquadrato postice paulo angustato, lateri- bus late rotundatis, vage impresso, linea tenui dorsali levi, angulis posti- cis rectis, elytris anoque piceo-testaceis, antennis pedibusque ferrugineis. Long. :13. Middle States and Kansas; under bark, rare. LISPINUS Er. 217. L. rufescems. Testaceo-rufus nitidus, capite inter oculos foveis duabus parvis impresso, thorace elytrisque parce subtilissime punctula- tis, hoc subtiliter canaliculato, et versus angulos posticos rectos breviter impresso. Long. °12. Alabama, at Mobile; Col. Motschulsky. 218. L. obscurus. Nigro-piceus nitidus, thorace elytrisque haud dense subaciculatim punctatis, illo postice vix angustato, ad angulos posticos rectos longius impresso, elytris ad basin utrinque profunde im- pressis, abdomine subtiliter parce punctato, ano rufo-piceo, antennis pedibusque rufis. Long. °12. Valley of Colorado and Gila River, Arizowa, under cotton- wood bark. 219. L. californicus. Nigro-piceus, capite thoraceque subtiliter punctatis, hoc pone medium arcuatim impresso, latitudine subbreviore lateribus late rotundatis, ad angulos posticos rectos vage explanato, ely- tris subtiliter punctulatis, et longitudinaliter rugosis basi utrinque fove- & 60 DESCRIPTIONS OF NEW SPECIES. atis, abdomine obsolete subtilissime punctulato, pedibus piceis. Long. CIA California, at San Jose; under oak bark. 220. L. temuis. Niger subnitidus, valde elongatus, parce obsolete sub- tilissime punctulatus, thorace latitudine haud breviore, lateribus late rotundatis, linea dorsali levi, versus angulos posticos rectos leviter im- presso, antennis pedibusque obscure rufis. Long. :09. Southern States. Smaller and more slender than the preceding species. MEICROPEPLUS Larr. 221. M. cribratus. Nigerrimus, thorace multicellulato lateribus me- dio angulatis, elytris costis utrinque tribus sutura margineque acute ele- vatis, interstitiis rude striatis et punctatis. Long. :08. Georgia; rare. The cells of the thorax are equal in size and somewhat irregular; the elytral coste are sinuate, between the sutural and the first dorsal is a single stria, between the others are two approximate striz and an intermediate ridge. The dor- sal segments are strongly tricostate and widely margined. 222. Mi. sculptus. Nigerrimus, thorace multicellulato lateribus valde rotundatis, elytris costis utrinque quatuor sutura margineque acute elevatis, interstitiis planis politis, levibus. Long. -06. Georgia, under pine bark. Smaller than the preceding, with the sides of the thorax not angulated, and the elytral interstices smooth; the dorsal segments, as in it, are strongly tricostate, and widely margined. HISTER Liyy. 223. EE. (Psiloscelis) subopacus. Oblongus, parum convexus, niger subopacus, confertim punctatus, thorace utrinque bistriato, versus latera grossius punctato, elytris striis utrinque 6 marginalique integris, mar- ginali interna obsoleta, epipleuris concavis bistriatis; tibiis anticis 5- dentatis. Long. «30. Nebraska; Mr. Ulke. Narrow, flatter, and less opake than H. planipes, with the inner thoracic stria much deeper. 224. H. semisculptus. Oblongus niger nitidus, thorace lateribus subtiliter marginato, et stria laterali a margine remota insculpto, elytris striis internis tribus brevissimis, prope apicem sitis, externis tribus a DESCRIPTIONS OF NEW SPECIES. 61 integris impunctatis, marginali ad medium postice abbreviata; epipleu- ris modice excavatis, impunctatis, stria laterali profunde impressa ; tibiis anticis fortiter 5-dentatis. Long. +22. Illinois; Mr. M. Schuster. Resembles in form and sculpture f. civilis, but belongs to a different division of the genus. It is allied to H. marginicollis, but is readily known by the marginal stria of the elytra being obliterated behind the middle, and the internal three dorsal strize being very short. 225. H. perplexus. Ovali-oblongus, niger nitidus, subtiliter pune- tulatus, thorace stria laterali a margine remota, externaque brevi ad angulo antico valde approximata, elytris striis dorsalibus sex integris leviter punctatis, internis duabus antice arcuatim conjunctis, marginali obliterata; epipleuris profunde bistriatis et leviter punctatis, tibiis an- ticis 3-dentatis. Long. *20. Middle and Western States, rare. Allied to H. americanus, and, like it, having the mesosternum truncate ; it differs, however, by its larger size and more oblong form, as well as by being dis- tinctly punctulate, both above and beneath. 226. H. (Platysoma) sequus. Elongatus, parallelus depressus, niger nitidus, thorace dense subtiliter punctato, elytris punctulatis striis pro- fundis, integris 2nda antice subobliterata ; tibiis anticis 4-dentatis, me- sosterno stria marginali antice obliterata. Long. -12. Southern States, rare. This species is not wider than H. pa- rallelus, but is as depressed as H. lecontei. The mesosternum is deeply emarginate, and the stria, though bending around at the sides, is not distinct at the middle. Besides the apical tooth, the middle tibiz have two small teeth at the middle, and the hind tibiz a single one, as in HZ. parallelus. SAPRINUWS Leacu. 22%. S.semimitems. Ovalis convexus, eneus, medio nitidus, capite linea transversa profunda, superiore arcuata obsoleta, thorace rugose punctato, plaga basali transversa levi, elytris stria suturali integra cum dorsali interna arcuatim conjuncta, dorsalibus extrorsum sensim longi- oribus, externa sinuata fere integra, marginali interna utrinque valde abbreviata, externa integra, a medio postice confertim punctatis, punctis ultra striam dorsalem externam haud extensis; tibiis anticis fortiter dentatis, tibiis tarsisque obscure rufis. Long. *13. Nebraska; Mr. Ulke. Related to S. spheroides, but the 62 DESCRIPTIONS OF NEW SPECIES. smooth space of the thorax is much smaller, and the punctured portion of the elytra much larger. PTILIUM Ez. . 228. P. camadense. Elongato-ovale, nigrum opacum sericeo-pubes- cens, dense subtiliter punctatum, thorace latitudine duplo breviore, an- trorsum paulo angustato, lateribus rotundatis, elytris margine apicali angusta flavo-testacea, antennis piceis, pedibus testaceis. Long. :02. Lake Superior. 229. P. fungi. Minutissimum, lineare, testaceum punctulatum pubes- cens, thorace latitudine paulo breviore, lateribus late rotundatis, elytris elongatis, apice rotundatis, antennis pedibusque flavis. Mobile; Col. Motschulsky. This is the smallest Coleopteron known to me; it is scarcely more than 1-100th of an inch long. 230. P. testaceum. Ovale convexum, rufo-testaceum nitidum, parce fortius punctatum, capite thoraceque obscurioribus, hoc amplo, antror- sum angustato, elytris latiore, angulis posticis paulo productis, elytris postice infuscatis, apice late truncatis, abdomine brevioribus. Long. ‘02. Athens, Georgia, under pine bark. Resembles in form a Tri- chopteryx, but the hind coxe are not laminate. 231. P. baiteatum. Oblongum subelongatum, testaceum nitidum parce punctulatum et pubescens, thorace latitudine breviore, antrorsum subangustato, lateribus rotundatis, angulis posticis obtusis, elytris ante apicem transversim infuscatis, abdomine paulo brevioribus. Long. -02. Athens, Georgia; one specimen. Differs from the next species by being finely instead of coarsely punctured. 232. P. brumnmeum. Oblongum subelongatum, piceum nitidum, parce fortiter punctatum, et pubescens, thorace latitudine sesqui breviore antrorsum vix angustato, lateribus rotundatis, angulis posticis obtusis, elytris basi rufescentibus, margine apicali testaceo, abdomine parum brevioribus, antennis pedibus abdomineque testaceis. Long. ‘02. Also found at Athens, Georgia. 233. P. pimi. Pallide testaceum, subtiliter punctatum, pubescens, thorace latitudine breviore lateribus late rotundatis, elytris abdomine multo brevioribus, oculis minutissimis nigris. Long. -015. Athens, Georgia, under pine bark. The eyes are exceedingly small and situated on the under surface of the head. The abdo- DESCRIPTIONS OF NEW SPECIES. 63 men projects beyond the elytra a distance equal to more than one-half the length of the latter. 234. P. quercus. Pallide testaceum depressum, subtiliter punctatum et pubescens, thorace latitudine breviore, postice subangustato, lateribus rotundatis, elytris abdomine multo brevioribus, oculis minutissimis, nigris. Long. ‘015. : Athens, Georgia; under oak bark. Resembles closely the preceding, but seems to differ by the thorax being more distinctly narrowed behind. 235. P. migrovittis. Lineare, pallide testaceum subtiliter punctu- latum nitidum, thorace latitudine breviore, postice subangustato, elytris abdomine paulo brevioribus, lineolis obscuris duabus pone medium utrinque ornatis; oculis mediocribus nigris. Long. +015. New Orleans; Col. Motschulsky. PTENIDIUM Er. 236. P. foveicolle. Elongato-ovale convexum, nigrum vel piceum nitidum leve, thorace latitudine breviore, postice subangustato, ad basin utrinque profunde bifoveato, antennis pedibusque testaceis. Long. *025. New Orleans; Dr. Schaum. 237. P. limeatuim, Elongatum convexum, testaceum nitidum, ely- tris ovalibus seri¢eo-pubescentibus, utrinque nigro-bivittatis, thorace minus subtiliter punctato, latitudine paulo breviore, antrorsum suban- gustato. Long. -015. Mobile, Alabama; Col. Motschulsky. Possibly not of this genus, but the single specimen before me does not permit an examination of the under surface. OLIBRUS En. 238. 0. vittatus. Ovalis convexus, supra niger nitidus, thorace lateribus rufescentibus, elytris vix obsoletissime seriatim punctulatis, vitta lata a humero fere ad apicem extensa rufo-testacea, striis internis duabus haud profundis, subtus rufo-testaceus. Long. *10. Middle States; Mr. Ulke. Resembles 0. bicolor, but is a little broader. LOBIOPA Er. 239. L. setulosa. Late ovalis, valde depressa, testacea supra scabra opaca, setis brevissimis vestita, thorace elytrisque maculis minutis nigris variegatis, his substriatis. Long. *20. Illinois. Broader and more depressed than L. undulata, and 5 64 DESCRIPTIONS OF NEW SPECIES. quite different by the dull color and erect short bristles which clothe the upper surface. The body beneath is shining testa- ceous and finely punctured. 240. L. guttulata. Elongato-elliptica, fusca, testaceo-variegata, ni- tida, pube subtili haud dense vestita, thorace lateribus late explanatis testaceis, elytris margine anguste reflexo testaceo, macula pallida com- muni transversa dentata ornatis. Long. °23. Illinois; Mr. Ulke. Much narrower than our other species, and clothed with fine pubescence, not with erect hairs. The disc of the thorax is fuscous, scarcely variegated, and the broadly depressed sides are testaceous; the elytra are variegated with fuscous and testaceous, with the narrow lateral margin testa- ceous ; there are some small scattered pale spots, and a large common transverse dentated pale spot extending half way from the margin across the suture and a little behind the middle. The head and antenne are fuscous, the under surface rufo-testaceous. PSILOPYGA Lec. 241. P. migripenmis. Latius ovalis, convexa, lete rufa nitida, capite thoraceque sat dense punctatis, elytris nigris punctato-striatis, interstitiis parce subtilius punctatis. Long. -20. York County, Pennsylvania; Dr. Melsheimer. Broader than P. histrina ; apart from color it differs by the thorax being uni- formly punctured, without any intermixture of larger points, by the striw of the elytra being less impressed, with the punctures of the intervals larger and more distant. CYBOCEPHALUS Er. 242. C. nigritulus. Rotundatus, globatilis, niger nitidus levis, antennis pedibusque piceo-testaceis. Long. -04. Georgia. Resembles a minute Agathidium, but easily distin- guished by the characters of the family. EPS Fasr. ‘243. I. cylindricus. Cylindricus, elongatus, niger nitidus, subtilius punctatus, thorace capite haud latiore, latitudine longiore, lateribus rectis, fere parallelis, postice paulo convergentibus, elytris macula magna humerali alteraque utrinque transversa paulo pone medium obscure sanguineis. Long. ‘28. Nebraska; Mr. Ulke. A very remarkable species, with a ee a ae yy ee, eee ee DESCRIPTIONS OF NEW SPECIES. 65 singularly elongate form. The humeral spot does not touch either the base or the margin; the posterior spot is about equally separated from the side margin and the suture. HESPEROBAENUS Lec. 244. H.rufipes. Elongatus, niger nitidus, capite thoraceque grosse punctatis, hoc vitta dorsali levi, lateribus subtiliter repandis, elytris pone basin oblique vage impressis, striis tenuibus profunde punctatis, pygidio fortiter punctato, pedibus antennisque obscure ferrugineis. Long. °12. Southern States; rare. NEMOSOMA Larr. 245. N. cylindricum. Lineare cylindricum, nitidum, capite tho- raceque subtilius punctatis, ille rufescente, hoc nigro, elytris nigro-piceis subtiliter striatim punctatis, interstitiis parce punctulatis, basi apiceque rufescentibus, subtus rufo-piceum, antennis pedibusque rufo-testaccis. Long. °18. Middle States. Quite different by its cylindrical form and faintly striate elytra from N. parallelum. Varies in color, being sometimes nearly black, with the base of the elytra, the antenn and feet reddish. TEMNOCHILA WEeEstw. 246. T. barbata. Fere cylindrica, nigra, capite thoraceque profunde fortiter punctatis, hoc postice sensim angustato, angulis posticis vix prominulis, elytris striis fortiter profunde punctatis, interstitiis subru- gosis, uniseriatim subtiliter punctulatis ; pedibus rufo-piceis, gula parce punctata et longe setosa, penecillo prope mentum fulvo piloso. Long. -55. Cape San Lucas; one specimen; Mr. Xéntus. The sterna are very coarsely punctured. The small tuft of fulvous erect hair near the mentum is a very singular character. COXELUS Lar. 247. C. guttulatus. Elongato-ovalis, nigro-piceus, opacus, setis pallidis variegatus, thorace latitadine duplo breviore, lateribus valde rotundatis serrulatis late depressis rufescentibus, elytris substriatis rugose granulatis, guttis parvis albo-setosis ornatis, antennis obscure ferrugineis. Long. *20. Middle and Southern States; not uncommon. The thorax in well preserved specimens has irregular stripes of diffused pale 66 DESCRIPTIONS OF NEW SPECIES. bristles ; it is deeply emarginate in front, considerably rounded on the sides, and sinuous at the base; the posterior angles are obtuse and not rounded. The elytra are substriate with close rows of coarse punctures, and are besides roughened with inter- vening rugosities ; the margin is finely serrate, and reddish; the round spots of pale gray bristles are not visible in badly pre- served specimens. DITOMA I11. 248. D. laticollis. Nigro-picea opaca, oblonga subdepressa, pilis pallidis parce hispida, capite thoraceque scabris, hoe latitudine breviore antice paulo latiore, lateribus serratis ante medium rotundatis, fovea oblonga media excavato costaque utrinque tenui undulata ornato, elytris sutura costisque dorsalibus tribus elevatis, interstitiis biseriatim punctatis, humeris maculaque magna postica obscure rufis, antennis tibiis tarsis abdomineque piceo-rufis. Long. °08. New York; rare. EUDESMA Lec. _ Corpus elongatum cylindricum, elytris costatis. Antenne 11-articulate, articulis duobus primis paulo crassioribus, 10 et 11 majoribus clavam formantibus, intermediis. subequalibus. Sulci antennales obliqui, breves. Oculi parvi, subtransversi. Tibie filiformes, haud spinosz, calcaribus parvis armate. Abdomen segmentis ventralibus haud emarginatis. This genus is founded upon Bitoma undulata Mels., a very rare insect found in Pennsylvania. It is closely allied to Bitoma, but differs by the base of the antenne being received in distinct oblique grooves beneath the eyes. The ventral segments of the abdomen are not emarginate, which is however also the case with all the species of Ditoma known to me. 249, Eu. undulata. Cylindrica elongata, atra opaca, confluentim punctata, pilis cinereis adspersa, ore rufo-piceo, thorace quadrato pos- tice paulo angustato, lateribus rectis serratis, margine apicali et basali sinuato, costis duabus brevibus anticis alterisque duabus discoidalibus obtuse elevatis, elytris fasciis duabus undulatis cinereo-pilosis ornatis, margine sutura costisque utringue tribus elevatis, interstitiis punctis quadratis biseriatim positis, antennis pedibusque obscure rufis. Long. 20. Bitoma undulata Mels. Proc. Ac. Nat. Se. Phil. 2, 110. Pennsylvania, York County. For the type of this interesting species I am indebted to Dr. Melsheimer. The portions of the elytra clothed with cinereous hair are reddish in color. SS een ee ee DESCRIPTIONS OF NEW SPECIES, 67 SYNCHITA Hettwie. 250. S. nigripenmis. Elongata, obscure ferruginea, supra setis erectis brevibus pallidis haud dense vestita, capite thoraceque punctatis, hoe latitudine sesqui breviore, lateribus parum rotundatis ciliatis vix serrulatis, elytris nigro-piceis, striis fortiter crenatis. Long. -OS—-10. Middle States; not very rare. A very distinct species. LASCONOTUS En. 251. L. pusillus. Elongatus depressus, piceus subnitidus, subtilis- sime parce pubescens, fronte late biimpressa, thorace punctulato, lati- tudine longiore, lateribus fere rectis marginatis, angulis rotundatis, dorso late excavato, utrinque et in medio carinato, lineisque duabus elevatis arcuatis ad apicem ornatis, elytris sutura margine costisque 4 utrinque elevatis, costa lma ante medium postice obsoleta, antennis pedibusque obscure ferrugineis. Long. -10, Southern States, Georgia and South Carolina; rare, under pine bark. The arcuated elevated line each side in the front part of the thorax touches the apical margin, and incloses the extremity of the longitudinal costa which limits the great dorsal excavation; this excavation is marked besides with a medial costa, which attains neither the apex nor the base. AULONIUM En. 2452. Au. tuberculatum. Elongatum cylindricum, nigrum sub- nitidum, vertice bituberculato, thorace latitudine longiore parce punctu- lato, striis duabus versus latera insculpto, antice transversim excavato, cornubus duobus brevibus ad apicem et tuberculis duobus ante medium armato, elytris versus basin rufescentibus, parce punctulatis et subtiliter striatim punctatis, abdomine pedibus antennisque rufis, illo nigro-fas- ciato. Long. ‘17. Pennsylvania and Georgia; rare. The ventral segments are rufous, with the anterior margin of each segment black. COLYDIUM Fasr. 253. C. nigripenne. Elongatum cylindricum, piceo-rufam niti- dum, capite antice obsolete postice fortiter punctatum, medio obtuse carinatum, thorace parce fortius punctato, tristriato, elytris nigris cos- tatis, interstitiis biseriatim fortiter punctatis. Long. *15—*19. Georgia and South Carolina; not rare. Rather less slender in form than @. lineola Say. 68 DESCRIPTIONS OF NEW SPECIES. EULACHUS Er. 254. Eu. carinatus. Elongatus cylindricus, ater opacus, subtilis- sime parce pubescens, capite thoraceque granulato-punctatis, hoc latitu- dine longiore 4-costato, elytris rugosis acute costatis, interstitiis latis planis, remote bistriatim punctatis, ore antennis pedibusque obscure rufiss Long. °13. Upper part of Georgia; rare. NEMATIDIUM Ez. 255. N. filiforme. Valde elongatum lineare cylindricum, rufo- piceum nitidum, capite thoraceque profunde haud dense punctatis, hoc latitudine plus duplo longiore, lateribus late sinuatis, elytris thorace plus sesqui longioribus, striato-punctatis, interstitiis vage punctatis et rugosis, apice oblique declivibus et utrinque vage sulcatis. Long. °48. North Carolina and Florida; Baron R. Osten Sacken. Re- markable for the extreme elongation of form. s OXYLAEMUS Er. 256. O. americanus. Elongatus cylindricus, ferrugineus nitidus, pilis erectis parcis vestitus, capite thoraceque parce grosse punctatis, elytris punctis grossis seriatim positis, tibiis anticis tridenticulatis. Long. 11. Middle States; rare. Pa., York Co., Dr. Melsheimer. SOSYLUS Er. 257. 8. costatus. Valde elongatus, niger subnitidus, capite thorace- que aciculato-punctatis, hoc latitudine sesqui longiore, postice sensim angustato, lateribus antice late rotundatis postice subsinuatis, angulis posticis rectis, elytris margine sutura costisque utrinque 3 elevatis, inter- stitiis latis subtilius haud dense punctatis. Long. °18. Southern States; Dr. C. Zimmermann. I take pleasure in correcting an error I formerly committed in considering this spe- cies as indicating a new genus of Colydiini, to which I gave the name of Pleuridium. The hind coxe are widely separated, and although the general form of body is that of Colydiini, the genus must be placed, as has been properly done by Erichson, in Both- riderini. It differs, however, remarkably from Bothrideres, not only in the form of body, but by the anterior cox being con- tiguous, and by the first joint of the tarsi being very long. The structure of the buccal cavity is also very different from Bothri- DESCRIPTIONS OF NEW SPECIES. 69 deres, and similar to that of Colydium, the mentum not being placed on a broad pedicel, and suddenly deflexed into a deep cavity as in Bothrideres. ENDECTUS Lec. 258. E. nitidus. Elongatus, fusco-ferrugineus nitidus, capite fortiter punctato, thorace parce grosse punctatis, hoc linea dorsali levi, lateribus marginatis haud sinuatis, elytris striis grosse punctatis. Long. *15. Georgia, under pine bark. Differs from 2. hamatodes by the form and punctuation of the thorax, and the interstices of the elytra being less elevated, and from L. reflexus by the thorax being more sparsely and irregularly punctured, with a distinct smooth dorsal line. PYCNOMERUS Er. 259. P. sulcicollis. Elongatus, nigro-piceus nitidus, capite pro- funde punctato, thorace latitudine longiore, parce punctato, dorso pro- funde bisulcato, lateribus late rotundatis fortiter marginatis, elytris striis tenuibus, at foveis elongatis remotis impressis, antennis pedibusque obscure ferrugineis. Long. :12—-15. Georgia, under pine bark. The two thoracic grooves do not attain either apex or base, and the dorsal line between them is convex and elevated. PHILOTHERMUS Avsz. 260. P. glabriculus. Elongato-ovalis, castaneus nitidus, fere glaber, thorace punctato, latitudine breviore, antrorsum angustato, lateribus late rotundatis, fortiter marginatis, elytris striis punctatis, interstitiis puuctulatis, antennis pedibusque testaceis. Long. -08—-1l. Middle and Southern States; not rare. ‘The punctures of the elytra are in scarcely impressed striz. In the male the thorax is broader and less rounded on the sides, and the elytra are slightly narrowed from the base. In the female the form is almost an elongate ellipse. CERYLON Latr. 261. C. angustulum. Elongatum, castaneum, vel piceum, nitidum, thorace latitudine longiore, parum convexo, lateribus marginatis postice rectis antice rotundatis, parce fortiter punctato, elytris striis antice punctatis, antennis pedibusque pallidioribus. Long. *07—-09. Middle and Southern States. Closely allied to C. unicolor, 70 DESCRIPTIONS OF NEW SPECIES. but the thorax is less flattened, and somewhat more regularly narrowed in front. CATOGENUS Wesrwoop. 262. C. limearis. Castaneo-rufus nitidus, valde elongatus cylin- dricus, capite convexo punctato canaliculato, sulcisque duabus brevibus frontalibus insculpto, thorace latitudine sesqui longiore, parce punctato, postice sensim paulo angustato, elytris striis subtiliter punctatis, exte- rioribus fere obliteratis. Long. °25. Cape San Lucas, Lower California; Mr. Xdntus. The spur of the anterior tibiae is much longer than in C. rufus. NARTHECIUS Lec. 263. N. grandiceps. Rufo-testaceus subnitidus, valde elongatus cylindricus, capite thorace longiore, aciculato, linea frontali impresso, supra oculos utrinque subtiliter carinato, thorace latitudine longiore, postice sensim angustato, lateribus omnino rectis, subtiliter punctato, linea laterali parum distincta notato, elytris thorace sesqui longioribus, remote striatis, interstitiis planis punctulatis et subtiliter pubescentibus. Long. °12. Pennsylvania, York Co.; Dr. Melsheimer; very rare. This singular insect differs from the other genera of the tribe by its cylindrical form. The head is longer and broader than the thorax; the eyes are small and not prominent; the antenne are not longer than the head, and the last three joints are a little broader. The mandibles are long, curved, slender and prominent. The legs are very short. The elytra are shorter than the head and thorax together, and the lateral margin of the prothorax is obsolete. TELMATOPHILUS Heer. 264. T. americanus. Elongatus ater, confertim subtiliter puncta- tus, cinereo-pubescens, thorace convexo, latitudine fere sesqui breviore, angulis anticis rotundatis, posticis rectis, lateribus subtiliter serratis, autennis pedibusque fusco-ferrugineis. Long. °12. Middle and Southern States, not common; found on plants near water. The elytra are very obsoletely striate. LOBERUS Lec. 265. L. impressus. Elongatus, eneo-niger nitidus, parce subtilis- sime cinereo-pubescens, capite thoraceque parcius punctato, hoc convexo, vont Stats, a DESCRIPTIONS OF NEW SPECIES. 71 latitudine plus sesqui breviore, lateribus marginatis late rotundatis, an- gulis anticis subrotundatis, posticis subrectis, ante basin sulco trans- verso profundo notato; elytris subtiliter striatim punctatis, interstitiis subtilissime punctulatis, ore antennis abdomine pedibusque piceo-rufis. Long. -U8—"10. Middle, Southern and Western States; rare. This insect at first sight resembles a small Haltica of the division Crepidodera. The genus has the form and general characters of Telmatophilus, but differs by the 9th joint of the antenne being as wide as the 10th, thus forming a distinct three-jointed club; in Telmatophi- lus the 9th joint is but little wider than the 8th, so that the club becomes more elongate than in Loberus. The elytral striw also afford a good distinguishing mark between the two genera, ANTHEROPHAGUS Larr. 266. A. convexulus. Elongato-ovalis, testaceus, subnitidus, flavo- pubescens, subtiliter confertim punctatus, thorace latitudine fere sesqui breviore, antrorsum paulo angustato, lateribus fere rectis, angulis anticis rotundatis, posticis rectis, dorso modice convexo, elytris vix obsoletis- sime striatis. Long. -15. One female from Canada; Mr. Ulke. Smaller, more convex and less pubescent than A. ochraceus, with the sides of the thorax Jess curved, and less strongly margined. TOMARUS Lec. 267. T. pulchellus. Elongato-ovalis, convexus, piceus, vel piceo- rufus nitidus, capite thoraceque punctatis et subtiliter pubescentibus, hoe latitudine breviore lateribus rotundatis margine subrepando, fovea basali utrinque impresso, elytris subtilius punctatis, macula magna humerali fasciaque lata pone medium rufotestaceis vage definitis, an- tennis pedibusque rufo-testaceis. Long. ‘(07—-08. Pennsylvania, Georgia, Illinois and Lake Superior; frequently found under stones in the spring. ‘The mentum has a very large somewhat obtuse medial tooth, which is much more prominent than the lateral teeth. The thorax is slightly pubescent, and there are a few erect hairs towards the sides of the body, but not the pubescence that is observed in Cryptophagus and Parameco- soma, which this genus agrees in the insertion of the antenne at the side of the front under the margin. 72 DESCRIPTIONS OF NEW SPECIES. EPISTEMUS Srepuens. 268. E.apicalis. Ovalis convexus, nigro-piceus nitidus, obsolete parce punctulatus, thorace angulis posticis subacutis, lateribus vix rotundatis subtiliter marginatis, elytris pone medium indeterminate rufo-testaceis, antennis pedibusque testaceis. Long. :04. Middle States; not rare. The prosternum in this genus is bistriate, and closely applied to the mesosternum, reminding one of the form seen in Acritus and many other Histeride. HOLOPARAMECUS Corts. 269. H. pacificus. Elongatus, testaceus nitidus, thorace cordato convexo, ante basin profunde transversim impresso, impressione versus medium latiore, elytris parce punctulatis, antennis 11-articulatis. Long. -03. Fort Yuma, California; under bark of cottonwood. The thoracic impression attains the sides and is not composed of fover. LATHRIDIUS It. 270. L. Liratus. Fusco-testaceus nitidus, capite fortiter punctato, vertice canaliculato, thorace latitudine longiore, medio sensim valde angustato, lateribus fortiter marginatis, disco punctato, bicarinato pone medium Jate profunde impresso, elytris ovatis thorace duplo latioribus convexis, ante medium impressis, striis profunde fortiter punctatis ver- sus apicem minus profundis. Long. :08. New York and Canada; Mr. Ulke. A pretty species resem- bling Z. costicollis Lec. from California, but with the thorax narrower and much more strongly constricted at the middle. TRIPHYLLUS Larr. 271. T. ruficormis. Elongato-ovalis, convexus, nigro-piceus nitidus, haud subtiliter griseo-pubescens, fortiter sat dense punctatus, humeris obscure rufis, antennarum clava, tibiis tarsisque piceo-rufis. Long. -13. Middle, Southern and Western States; not rare. I have adopted the name under which I received it from Dr. Melsheimer. BERGINUS Er. 272. B. pumillus. Elongatus niger opacus, scabro-punctatus, pube rigida cinerea minus subtiliter vestitus, thorace latitudine longiore, DESCRIPTIONS OF NEW SPECIES. 13 lateribus late rotundatis subserratis, elytris obsolete 3- vel 4-costatis. Long. -08. Pennsylvania; Dr. Melsheimer. Resembles in form a Corti- caria, but in sculpture is quite different. The elytra are feebly sulcate, leaving three or four traces of cost on each. MARGINUS Lec. 273. M.rudis. Elongato-ovalis parum convexus, nigro-fuscus, pube erecta fusca vestitus, capite thoraceque rude punctatis, hoe latitudine breviore, antrorsum angustato, lateribus rotundatis marginatis, angulis posticis rectis, elytris striis fortiter punctatis, parum impressis. Long. 10. Middle and Southern States; not rare. The genus differs from Diphyllus by the antennal club being three-jointed, and by the lateral lines of the thorax being obsolete, a mere trace of the outer one being seen near the base, and from Diploccelus by the last mentioned character, as well as by the 11th joint of the antenne being somewhat narrower than the 10th. DIPLOCOELUWS Goérin. 274. D. brunneus. Elongatus ovalis, parum convexus, nigro-fuseus, pube suberecta minus subtiliter vestitus, capite haud dense, thorace fortius punctato, latitudine fere duplo breviore, lateribus marginatis antice rotundatis, utrinque bisulcato et subtiliter tricarinato, elytris striis punctatis vix impressis, interstitiis subtiliter punctulatis, antennis pedibusque obscure ferrugineis. Long. *14. Middle States; rare. Dr. Melsheimer and Mr. Ulke. DEARTHRUS Lec. 275. D.longulus. Elongatus, niger subnitidus, subtiliter cinereo- pubescens, sat fortiter haud dense punctatus, thorace latitudine plus duplo breviore antrorsum angustato, lateribus obliquis parum rotundatis, medio breviter subtiliter canaliculato, elytris thorace quadruplo longio- ribus, antennis pedibusque piceis, illis basi tarsisque pallidioribus. Long. °12. Georgia, Pennsylvania and Illinvis; on plants, More elon- gate than any species of Aftagenus, to which this genus is closely allied. ike as in Adtagenus, the prosternum is truncate in front, but is very slightly prolonged behind the coxee into a small point; the mesosternum is tolerably broad, declivous, with a fine 74 DESCRIPTIONS OF NEW SPECIES. short channel in front for the reception of the prosternal point. The antenne are scarcely longer than the head, and. have but 9 joints, of which the last three form an oval club. The under surface of the prothorax is vaguely excavated each side for the reception of the anterior tibiz and the antenne, as in Attagenus. PEDILOPHCORUS 8terr. 276. P. zmeolus. Apterus, ovalis, convexus, antice oblique attenua- tus, postice obtusus, nigro-virescenti eneus, punctatus, pilis albidis minus subtiliter vestitus, subtus piceus cinereo-pubescens, tarsorum articulo 3i0 haud lobato. Long. 17. Nebraska; Mr. Ulke. Oval, convex, above dark greenish bronzed, uniformly but not closely punctured, and clothed with coarse white hairs ; thorax twice as wide at the base as its length, strongly narrowed in front, sides oblique, scarcely rounded. Scu- tellum clothed with white hair ; elytra ovai, wider than the thorax, obtusely rounded behind ; wings none. Beneath piceous, densely punctured, covered with brownish-gray pubescence ; tarsi simple. Quite different in form from our other species. LIMINEOS Mier. 27%. L. ovalis. Ovalis convexus, nigro-eneus, pube flava parce ves- titus, thorace dense punctato, stria basali utrinque profunda impresso, elytris profunde striatim punctatis, interstitiis obsolete punctulatis, vitta obscure testacea sepe interrupta ornatis, antennis testaceis. Long. 10. Pennsylvania ; Prof. Haldeman, and Mr. E. D. Cope. Re- sembles in form and color LZ. fastiditus Lec., but the elytral stripe is much wider and less definite in form, the body is wider and the sides of the thorax are more distinctly rounded. HETEROCERUS Fasnr. 278. H. gmatho. Fuscus, pube densa sericea fusca vestitus, capite thoraceque pilis longioribus pubescentibus, hoc latitudine triplo breviore, lateribus valde rotundatis testaceis, angulis posticis marginatis, elytris obsolete striatis, dense subtiliter punctulatis, testaceis maculis undatis fuscis variegatis, pedibus testaceis. Long. ‘18—°25. Mas, labro producto capite vix breviore, basi utrinque late lobato, apice emarginato, mandibulis elongatis tenuibus elytris thorace angustioribus, a basi paulo angustatis. Fem. labro antice rotundato, ad apicem emar- ginato. Colorado River, California. The females appear to vary in | DESCRIPTIONS OF NEW SPECIES. 15 form, some (possibly the representatives of the strong minded class in our own species) resemble very closely the male in form ; usually, however, the thorax is not wider than the elytra, and the latter are parallel on the sides, and obtusely rounded posteriorly ; the color of the under surface is sometimes fuscous, with the sides of the pectus and abdomen testaceous, but sometimes be- comes entirely testaceous. The testaceous margin and usual bands of the elytra are so dilated that the ground color appears testaceous, with three irregular angulated fuscous fasciz. 299. H.labiatus. Nigro-fuscus, pube densa sericea griseo-fusca ves- titus, capite thoraceque pilis longioribus pubescentibus, hoe latitudine triplo breviore, lateribus valde rotundatis, angulis posticis marginatis, elytris obsolete striatis dense subtiliter punctulatis, margine tenui lineo- lisque pluribus fasciatim positis testaceis ornatis, pedibus testaceis, tibiis posterioribus infuscatis. Long. °25. Mas, labro valde producto, basi utringue late lobato, apice emarginato, mandibulis elongatis, tenuibus, elytris thorace angustioribus a basi paulo angustatis. One specimen; San Diego, California. This species exactly resembles in form and characters H. gnatho, but the thorax and body are entirely brownish-black, and the pale markings of the elytra are very narrow; the usual bands are formed by the con- fluence of narrow linear spots, one of which attains the base, and another is placed just before the tip. The mandibles, as in the preceding species, are ferruginous, edged with black. 280. H. ventralis. Mels. Proc. Acad. Nat. Sci. 2,99. H. labiatus Kiesenwetter, Linn. Ent. 5, 282. Common in the Middle States and on the Upper Mississippi. The male has the labrum very, large, with the apex prolonged and emarginate, and the mandibles long and slender. Dr. Mel- sheimer’s species is known to me by actual comparison; Kiesen- wetter’s only by description, with which my specimens agree. 281. H. luteolus. Testaceus, pube sericea subtili vestitus, thorace latitudine triplo breviore, lateribus valde rotundatis, angulis posticis submarginatis, elytris vix obsolete striatis, densissime punctulatis. Long. °10. Banks of the Colorado River, California, near Fort Yuma. Still smaller than H. limbatus Kies., and more finely punctured. 76 DESCRIPTIONS OF NEW SPECIES. OCHODAEUTS Lepr. 282. 0. fromtalis. Ovalis convexus, ferrugineus, breviter fulvo- setosus, punctatus, clypeo antice transversim suleato, capite inter an- tennas tuberculo parvo armato, inter oculos transversim paulo elevato, thorace scabro-punctato, postice canaliculato elytris striato-punctatis, interstitiis modice punctatis, haud elevatis. Long. °30. Texas; Mr. Ulke. Very distinct from our other species by the subacute frontal tubercle. The form of body is as in O. simplex. 'The mandibles appear to be destitute of teeth. DIPLOTAXIES Kinsy. 283. D. puberulus. Elongato-oblongus, castaneus, pube erecta helva vestitus, capite thoraceque confertim punctatis, clypeo marginato, antice subtruncato, thorace latitudine plus duplo breviore, antice vix angus- tato, lateribus rotundatis angulis omnibus obtusis, elytris fortius puncta- tis, costis solitis vix distinctis, tibiis anticis obtuse tridentatis. Long. °32. Texas ; Mr. Ulke. The claws are cleft as usual. This species must be placed next to D. sordida, though differing greatly in the form of the thorax. DASYDERA Lec. 284. D.rathvoni. Nigra, pilis longis erectis vestita, thorace dense punctato, longe fulvo-piloso, elytris dense punctatis, breviter nigro- pubescentibus, apice attenuatis divergentibus, guttis parvis flavo-pubes- centibus serie quadruplici positis, antennarum clava obscure testacea. Long. -40—-60. Sacramento Valley, California; Mr. 8S. 8. Rathvon. The elytra are only two-thirds the length of the abdomen, gradually but considerably attenuated towards the extremity. The antennal club in the male is twice as long as in the female, though smaller than in D. ursina. The lateral tooth of the anterior tibiz is strongly marked, while in D. ursina it is indistinct. LACHNOSTERNA Hore. 285. L. maculicolkis. Dilute fusco-ferruginea nitida, elongata, thorace parce punctato, apice marginato, flavo, macula maxima antica nigro, capite confertim punctato, nigro, clypeo parabolico, fortiter mar- ginato. Long. -48—-55. Two males, Cape San Lucas; Mr. John Xantus. Resembles in appearance some species of Cyclocephala. DESCRIPTIONS OF NEW SPECIES. 77 Body long ovate, pale brown, fringed at the sides with hair. Head rather longer than wide, coarsely and densely punctured, black, clypeus rounded, strongly margined; antcnue pale, 9- jointed, joints 83—5 closely united, club longer than the stem. Labrum very broadly and slightly concave. Thorax one-half wider than long, considerably narrowed in front, strongly rounded on the sides, with a distinct marginal line in front; surface sparsely punctured, yellow, with a very large transverse black spot, ex- tending from the apex nearly to the base, where it is pointed. Elytra strongly punctured, fringed at the sides with hairs. Be- neath sparsely clothed with long hairs, tibie and tarsi darker, spurs of hind tibize both movable, obtuse, claws armed with a small tooth near the base. A species remarkable not only for the color of the thorax, but by its anterior margin being thickened, and separated by a trans- verse impressed line; in Listrochelus the same marginal line is seen, but to a much less extent. 286. L. nitidula. Elongato-ovata, testacea nitida, capite fuseco, for- titer haud dense punctato, clypeo rotundato, marginato, apice obsolete sinuato, thorace flavicante, apice marginato, parce punctato lateribus valde rotundatis, parce fimbriatis, elytris punctatis, margine parce fim- briatis. Long. ~45. Cape San Lucas; Mr. John Xintus. Also resembles a small Cyclocephala. Smaller than the preceding, with the thorax more narrowed in front, and more rounded on the sides, and the clypeus broader and slightly sinuate in front. In the female the tooth of the tarsal claws is more prominent and near the middle of the claw. The antenne of the male are as in the preceding. LISTROCHIELUS Branca. 287. L. densicollis. Elongatus cylindricus, piceo-rufus, capite tho- raceque obscurioribus nitidis, illo fortiter punctato, angustius marginato, antice late subtruncato, fronte sutura bene impressa, thorace confertim fortiter punctato, lateribus obtuse angulatis, angulis posticis haud rotun- datis ; elytris vage punctatis, glauco-pruinosis, tibiis posticis calcaribus subequalibus, tarsis tibiis paulo longioribus. Long. “62. ' Cape San Lucas; John X:intus. Resembles in form L. mu- coreus, but differs considerably by the characters above noted, The sexual characters are as in that species. 78 DESCRIPTIONS OF NEW SPECIES. 288. L. puberulus. Elongato-ovalis, ferrugineus, flavo-pubesceus, versus latera longe pilosus, capite anguste marginato, lateribus obliquis antice late subtruncato, fortiter punctato, fronte sutura bene impressa, thorace dense fortiter punctato, lateribus obtuse rotundatis, elytris pro- funde equaliter punctatis. Long. :50. Cape San Lucas; John Xintus. One male; the tarsal claws are strongly pectinate. Quite distinct from any other species known to me by the more strongly punctured elytra, and uniform pubescence. ANOMALA Kepprr. 289. A. centralis. Longiuscula subovata, testacea, capite confertim subtiliter punctato, rufo, thorace parce punctulato macula triangulari ab apice fere ad basin extendente, elytris seriatim punctatis sutura lim- boque externo nigris, tarsis fuscis. Long. °35. Cape San Lucas; Mr, John Xintus. Of the same shape as A, varians, but very distinct from all the species known to me by the triangular spot of the thorax; this spot in front is nearly as wide as the head, and gradually narrows behind, terminating behind the middle. The elytra are marked with regular rows of punctures, the only confused ones being near the suture. The club of the antennz in all the specimens before me is equal in length to the stem. / PELIDNOTA McLeay. 290. P. luce. Obscure viridi-enea, capite thoraceque nitidis sat sub- tiliter punctatis, elytris alutaceis, castaneis viridi-micantibus, subtiliter seriatim punctatis, pedibus nigro-cyaneis, viridi tinctis ; antennis casta- neis. Long. *70—-77. Cape San Lucas; John Xintus. The elytra are very dark brownish testaceous, but so tinged with metallic green that the ground color is not obvious. The head and thorax are dark bronzed green; the clypeus is flat, parabolic, and finely margined. COTALPA Burm. 291. C. puncticollis. Viridi-enea, longe pilosa, elytris fusco-testa- ceis vage haud profunde punctatis, fere glabris, capite confertissime punctato, clypeo parabolico, thorace rude sat dense punctato, pedibus chalybeis. Long. °85. New Mexico; Mr. Ulke. The punctures of the thorax are large but not so dense as to be conspicuously confluent. The a Rn tte ine Ree ee DESCRIPTIONS OF NEW SPECIES. 79 form of the body is just as in P. lanigera, and the elytra are punctured in the same light manner. The clypeus is longer and less obtuse. CYCLOCEPHALA Larr. Our species, which are all of a testaceous color, and differ chiefly by the form of the head, may be conveniently tabulated as follows :— § Body glabrous above. Clypeus parabolic, narrowly margined, bead black, front reddish testaceous. 1. IMMACULATA. Clypeus parabolic, subtruncate, more strongly margined in front, head black, front testaceous, body elongate. . 2. LONGULA. Clypeus subparabolic, truncate, strongly margined in front, head entirely black, body elongate. 3. SEDITIOSA. Clypeus nearly semicircular, strongly margined, head blackish, margined with reddish testaceous, body robust. 4. ROBUSTA. §§ Body pubescent above. Clypeus parabolic, narrowly margined, head blackish, front testaceous. 5. VILLOSA. Clypeus parabolic, strongly margined in front. 6. HIRTA. wy Clypeus broadly parabolic, strongly margined. 7. PUBERULA. 292. C. lomgulla. Elongata, testacea nitida, capite parce punctato, nigricante, fronte testacea, clypeo parabolico subtruncato, margine api- cali altius reflexo, thorace parce punctato, antice parum angustato, elytris haud profunde rugose punctatis. Long. *38. Cape San Lucas; Mr. John Xintus. Only males obtained. 293. C. seditiosa. Elongata, testacea nitida, capite parce subtilius punctato, nigro, clypeo parabolico truncato, margine apicali altius re- flexo, thorace parce punctato, margine apicali nigricante, antice parum angustato, elytris haud profunde punctatis. Long. *40. Ship Island, Mississippi. Collected by Dr. T. H. Bache, Surg. of Vols., and kindly presented to me by Dr. 8. Lewis. 2994. C. robusta. Ovalis robusta, rufo-testacea nitida, capite sat dense, antice confertim punctato, nigricante, clypeo fere semicirculari, margine reflexo rufescente, thorace latitudine duplo breviore, lateribus valde rotundatis, fortius punctato, linea dorsali levi, elytris fortius punctatis infuscatis, pygidio infuseato. Long. *50. Texas; Mr. Ulke. Very distinct by the form of the clypeus, and the more robust shape. 6 80 | DESCRIPTIONS OF NEW SPECIES. 295. C. puberula. Elongata testacea, pilis erectis villosa, capite parce subtilius punctato, clypeo brevi late parabolico, margine altius reflexo, thorace parce punctato, antice parum angustato, elytris seriatim punctatis punctisque parvis interjectis. Long. °35—-40. Georgia. Narrower than C. villosa and much smaller. - PHILEURUS Larr. 296. P. vitulus. Niger nitidus, capite cornubus duobus cylindricis armato, clypeo ad apicem acuto et alte reflexo, thorace punctis variolosis antice et in medio densioribus, postice sublevi, medio late canaliculato, pone apicem obsolete bituberculato, elytris striatim punctatis, tibiis _anticis tridentatis. Long. *85—-90. Cape San Lucas; Mr. John Xantus. The thoracic tubercles are very faint, close to the apex, and separated by the tip of the median furrow. The transverse ridges of the hinder tibiz are prolonged above into spines. The species belongs to Burmeis- ter’s division (A—b). In the female the horns of the head become merely tubercles, and the subapical tubercles of the thorax are wanting. GYWMNETIS McLeay. 297. G. cretacea. Atra nitida, thorace parce subtiliter punctato, lateribus pube cretacea marginatis, elytris vage haud dense punctatis, apice breviter acute prolongatis, maculis utrinque duabus cretaceis paulo pone medium transversim positis, metasterni lateribus episternisque pube cretacea indutis, epimeris mesosterni macula cretacea, pygidio rugose punctato, nigro-pubescente maculis duabus magnis cretaceis. Long. 90. Arizona; Mr. Ulke. One male specimen, from Philadelphia, in the collection of Mr. Bland. This species seems to bear the same relation to WZ. dimidiata that M. flavi- pennis does to the preceding. It differs merely in color; the antennez are testaceous, and the elytra margined with black behind the middle, and at the tip, the black of the latter extending for about one-fifth of the length. Gerstecker has described (Mon. Rhipiphoridum, 21) both sexes of M/. dimidiata as having the antenne black with the base testaceous, and it is solely in deference to this observation that I have described the two species in this note. Otherwise, I would be tempted to regard M. abdomi- nalis as the female of M. flavipennis, and M. marginalis as the male of M. dimid‘ata. DESCRIPTIONS OF NEW SPECIES. 155 Differs from R. limbatus by the smaller size, different color, and more finely punctured thorax; the posterior lobe is less rounded at tip than in that species. MELOE Livy. 452. M. montamnus. Nigro-violaceus, capite thoraceqne fortiter punctatis, hoc capite angustiore, latitudine longiore, postice angustato, basi emarginato; elytris fortiter intricato-rugosis ; abdemine supra con- fertim subtilius rugoso; antennis articulis intermediis (feminw) paulo latioribus. Long. *55—°86, One female from Oregon, and another from Montana. This species is closely allied to IZ rugipennis, and, as in that species, the thorax is destitute of impressions; but the punctures of the head and thorax are more numerous, and less unequally distributed, and the dorsal segments of the abdomen are more finely rugose. The male, when discovered, will be found to have the 5th, 6th, and 7th joints of the antenne dilated, as in I. rugipennis; the 8th and 9th joints of the female are about as long as their width, the 10th is one-third longer. 453. M. timctus. Nigro-violaceus, capite thoraceque fortiter punc- tatis, hoc capite angustiore, latitudine longiore, postice paulo angustato, canaliculato, margine postico depresso, basi emarginato; elytris fortiter iutricato-rugosis ; abdomine supra subtilissime rugoso ; antennis articulis intermediis (femine) paulo latioribus. Long. -44—-50. Three females from Nebraska, near the Rocky Mountains. Differs from the preceding by the head and thorax being still more coarsely punctured, the latter channelled, with the basal margin strongly depressed, and the dorsal segments of the abdo- men much more finely rugose. The 8th, 9th, and 10th joints of the antenne are nearly equal in size. M. afer differs from this species by the color being black, with- out any bluish tint, and by the dorsal segments being strongly rugose, as in JL. montanus. 454. M. carbonaceus. Ater, subnitidus, capite thoraceqne rude punctatis, hoe capite angustiore, latitudine parum longiore, ovato, postice angustato, pone medium canaliculato, ad basin emarginato; elytris fortiter intricato-rugosis, abdomine supra rugose punctato; an- tennis articulis intermediis (femin#) paulo latioribus. Long. *64—74. Two females from Nebraska, near the Rocky Mountains. Differs from the preceding by the head and thorax being more 156 DESCRIPTIONS OF NEW SPECIES. coarsely punctured, the latter more narrowed behind, with the basal margin not depressed; the rugosities of the elytra are more coarse, and those of the dorsal segments more punctiform. The joints 8-10 of the antenne increase slightly in length, but the difference is not very obvious. NOMASPIS Lec. Meloe parvulus Hald. differs from Meloe by the elytra not being in any way imbricate; the scutellum is distinct, triangular, rounded behind, and projects between the elytra, which are con- nate for about one-third of their length, and then gradually diverge, as in Meloe. In Henous the elytra are connate almost to the tips. This genus is, therefore, intermediate between the two just named, but more nearly allied to the latter. 455. N. parvulus. Ater subopacus, capite thoraceque fortiter punc- tatis, hoc transverso, capite paulo angustiore, postice vix angustato, basi fere truncato, angulis anticis valde rotundatis, disco canaliculato, ante scutellum vage impresso; elytris confertim scabris, ad quadrantem connatis, dein divergentibus apice singulatim rotundatis; abdomine supra dense subtilius rugose punctato; antennis capite thoraceque longioribus, articulo 2ndo 4toque equalibus, 3io longiore. Long. -40—-58. Meloe parvus|| Haup. Stansbury’s Expedition to Great Salt Lake, 377; Lec. Proc. Acad. Nat. Sc. Phila. VI, 329. Meloe parvulus Haup. Proc. Acad. Nat. Se. Phila. VI, 404. Kansas, Colorado, and New Mexico. The antenne are nearly filiform, but not very slender, the joints 4-10 being equal, and the 11th a little longer. The base of the thorax is finely margined, and scarcely emarginate, the disk near the hind angles is convex, and the angles themselves nearly rectangular, though not promi- nent; the dorsal channel is distinct, and wider towards the base, and marked with a distinct impressed inedian line. ~ MACROBASIS Lec. 456. M. wirguilata. Nigra dense cinereo-pubescens, scutello, ely- trorum sutura margine vittaque dorsali angusta pallide pubescentibus ; antennis nigris, pedibus ferrugineis, artubus fuscis. Long. -34—-42. Mas antennarum articulo 1mo sequentibus 4 haud breviore, ultra medium antice sinuata, 2ndo minuto, 3io0 sesqui longiore, 4to precedentibus duobus vix longiore. Femina antennarum articulo Imo sequentibus duobus vix longiore, ex- trorsum sensim incrassato, 2ndo-4to sensim paulo longioribus. DESCRIPTIONS OF NEW SPECIES. 157 Cape San Lucas ; collected by Mr. Xintus. A very distinct Species, not needing further description to enable it to be re- cognized, EPICAUTA Rept. 45%. E. pedalis. Nigra minus dense cinereo-pubescens, capite pune- tato, thorace capite angustiore, latitudine longiore, sat dense punctato, canaliculato; elytris confertim subtilius punctatis; antennis nigris articulo 3io sequentibus duobus vix breviore, 2ndo brevi; pedibus fer- rugineis, artubus fuscis. Long.*38, Three males collected at Cape San Lucas, Lower California, by Mr. Xantus. The 3d, 4th, and 5th joints of the antenne are thicker than the outer ones, which diminish gradually in width, as in the male of HL. morio. 458. E. comvolvuli. Atra opaca, confertissime punctata, breviter pubescens, capite sat dense punctato, pone oculos lete rufo, et subtiliter canaliculato ; thorace capite angustiore, latitudine sesqui longiore, linea dorsali tenui impressa; elytris elongatis, thorace sesqui latioribus; an- tennis filiformibus, articulo 3io precedente plus duplo, sequente autem sesqui longiore. Long. *30—-48. Mas capite opaco, subtiliter granulato, punctis hand profundis. Femina capite nitido, profunde haud dense punctato. Variat thorace dense cinereo-pubescente, elytris vel cinereo-pubescentibus, vel atris sutura margine vittaque abbreviata cinereo-pubescentibus ; capite nonnunquam toto nigro. Cantharis atrata, var. convolvuli Mets. Pr. Acad. N. Se. Phila. III, 53. Lytta convolvuli Lec. ibid. VI, 339. Pennsylvania to Texas. The difference in sculpture of the head might readily cause the two sexes to be regarded as different species. It differs essentially from 2. pennsylvanica by the head being less densely punctured than the thorax, and by both being more strongly punctured than the elytra. 459. E. pardalis. Nigra, cinereo-pubescens, maculis rotundatis glabris nitidis levibus confluentibus adspersa, interstitiis angustis punctatis, lineis irregularibus undatis precipue transversis formanti- bus; capite thoraceque obsolete canaliculatis. Long. *40—-53. New Mexico and Arizona; General Pope and Dr. Irwin, U.S.A. This form is allied to #. maculata, but differs by the denuded spots being much larger and so confluent as to leave a few intervening narrow irregular lines clothed with gray hair; by the naked surface being smoother and less opaque on the elytra, and really polished on the head and thorax; by the head 158 DESCRIPTIONS OF NEW SPECIES. and thorax being less distinctly channelled. The antenne are rather shorter, and slightly less slender. I have seen no males belonging to this form, and but one of Lytia conspersa Lec. ; but have observed in the typical specimens of EL. maculata that the denuded spots are much larger in the females than in the males, and therefore conclude that the differ- ences being of a comparative nature, the present species, as well as the one just named, should be regarded as races of Z. maculata. 460. E. sericams. Nigra, pube cinerea minus subtili dense vestita, capite thoraceque sat dense, elytris densius punctatis, thorace campanu- lato, latitudine parum longiore, canaliculato, basi marginata; antennis nigris, capite thoraceque haud longioribus, articulis externis arcte appli- catis. Long. -30—-45. Kansas, New Mexico, and Texas; abundant. Allied to LZ. Jerruginea, but the pubescence is much coarser, and cinereous instead of fulvous; and the thorax is less elongate. Otherwise but little difference is observed. 461. E. pruimosa. Nigra opaca, pube brevi subtili minus dense vestita, canite thoraceque subtiliter confertim punctatis, hoe campanu- lato, latitudine haud longiore, subtiliter canaliculato; elytris thorace sesqui latioribus subtilissime scabro-punctatis ; antennis nigris filiformi- bus, capite thoraceque vix longioribus, articulis externis arcte applicatis. Long. :30—-44. Colorado Territory ; three specimens kindly given me by Mr. Benj. D. Walsh. This species is allied to HL. ferruginea, and sericans, but differs by the pubescence being very fine, and not dense, giving a leaden lustre to the surface. I can find no sexual differences in the specimens. a 462. E. callosa. Nigra subnitida, pube lete fulva dense vestita, capite thoraceque confertim punctatis, hoc campanulato, latitudine paulo longiore, canaliculato, callo utrinque ovali nitido levi ornato; elytris thorace sesqui latioribus, dense subtiliter rugose punctatis ; an- tennis nigris capite thoraceque paulo longioribus, filiformibus, articulis externis arcte applicatis. Long. .87—-44. Texas, Mr. A. Sallé; Nebraska, Mr. Ulke. There are five specimens before me, in which I can detect no sexual differences. This species is more slender than LH. sericans and pruinosa, being of the same form and color as H. ferruginea, from which it differs by the smooth callus each side of the thorax, midway between the apex and base, and equally distant from the side and the medial line. DESCRIPTIONS OF NEW SPECIES. 159 PYROTA Lec. 463. P. termimata. Nigra, capite nitido parce punctato, macula magna rhomboidali luteo punctis paucis nigris notato, thorace latitudine longiore, nitido punctis paucis notato, pone apicem vage transversim impresso, ante scutellum late foveato, luteo macula discoidali utringue guttisque duabus parvis in lateribus ipsis sitis nigris, seutello nigro; elytris luteis subtiliter dense rugosis subopacis, macula ovali ad basin prope suturam, macula latissima pone medium apiceque nigris; subtus tota nigra. Long. *74. One female from Kansas, near the Rocky Mountains; Mr. Walsh informs me that he has a similar one from Colorado Ter- ritory. Allied to P. engelmanni, but differs by the color of the head, by the thorax being less elongate, having more numerous impressed punctures, and by the position of the lateral small spots, both of which are on the inflexed portion, near the middle, the inner or upper one being more anterior, and the outer or lower one being on a transverse line with the discoidal spot; in P. engel- mannit the outer one is anterior to the discoidal spot, and the inner one is situated on the apical margin. The scutellum is black, while in B. engelmanni it is in whole or in part yellow ; the elytra have but one sub-basal spot on each side, near the suture; the fasciform spot extends from the second fifth to the fourth fifth of the elytra (attaining as in P. engelmanni neither the side margin nor the suture), and the apical black margin is narrower. The species of Pyrota in my collection may be distinguished readily by the following synopsis :— Elytra banded with black ; Apex of elytra black ; Legs spotted with yellow and black. MYLABRINA. Legs entirely black ; Basal spots double, sometimes confluent. ENGELMANNI. Basal spot single, near the suture. TERMINATA. Apex of elytra yellow; legs spotted. POSTICA. Elytra striped ; legs spotted ; Vertex deeply channelled ; elytra with a broad stripe and subbasal spot. VITTIGERA. Vertex not channelled ; Elytra with the entire limb, an abbreviated basal vitta and subapical spot pale. INSULATA. Elytra with a discoidal and common sutural stripe black. GERMARI. Elytra with a discoidal stripe and subbasal spot black. piscorpRa. Elytra black, with the entire limb yellow. LIMBALIS. ll 160 DESCRIPTIONS OF NEW SPECIES. P. afzeliana is.unknown to me, but seems to differ from P. viltigera by the thorax having but two black spots, and by the head having two distant occipital spots instead of two confluent frontal ones, and by the vitta of the elytra being more sinuate, and shorter, and by the apex being black. 4AG4. P. postica. Supra lutea nitida, capite parce subtiliter punctato, thorace latitudine longiore punctis paucis impresso, gutta utrinque dis- coidali nigra alteraque in latere ipso signato; elytris subtiliter rugosis, maculis utrinque duabus ovalibus ad basin fasciaque lata nigra pone medium ad marginem haud extensa, et ad suturam vix interrupta; subtus nigro-luteoque variegata, pedibus luteis, genubus, tibiarum apice, tarsisque nigris ; antennis nigris articulo lmo luteo. Long. *70—-92. Lytta mylabrina 6 Lec. Jour. Acad. Nat. Sc. Phila. 2d ser. IV, 22. Texas and New Mexico; two females. This species agrees with P. mylabrina in form and sculpture, but differs by the arrangement of the black spots of the elytra. 465. P. limbalis. Testaceo-rufa, capite thoraceque nitidis punctis paucis impressis, hoc latitudine longiore, macula utrinque discoidali ovali nigra pone medium signato; elytris dense rugose punctulatis parce puberulis, subnitidis, atris, limbo omni scutelloque rufo-testaceo ; meso et metapleuris, coxarum macula, genubus, tibiis ultra medium, tarsis, ore antennisque nigris. Long. *30—-42. A pretty little species, from the neighborhood of Norfolk, Va. ; for which I am indebted to Mr. Ulke and Mr. Akhurst. The palpi are alike in the four specimens in my collection. POMPHOPOEA Lec. 466. P. unguicularis. Valde elongata, olivaceo-zenea, sepe cyanes- cens, sub-opaca, capite thoraceque pilis pallidis mdtlis erectix precipue ad latera vestitis, parce subtiliter punctatis, hoc latitudine-longiore cam- panulato, lateribus ad apicem subito rotundatis dein subsinuatis ; elytris confertim rugose punctatis ; antennis nigris, pedibus rufo-testaceis, coxis trochanteribus genubusque cyaneis, tarsorum articulo ultimo ad apicem, unguiculisque nigris, tibiis intermediis curvatis. Long. -70—-78. Mas tibiis anticis fortiter incurvatis, supra medium compressis et intror- sum late concavis ; abdominis articulo ventrali penultimo versus apicem paulo incrassato, apice late emarginato, ultimo! profunde excavato, usque ad medium acute emarginato. Femina tibiis anticis rectis; abdominis segmentis ventralibus haud emar- ginatis. One pair; Illinois. Closely allied to P. say?, but differs 1) DESCRIPTIONS OF NEW SPECIES. 161 the tibie not being blue at base and tip, and by the tarsi being yellow, with only the extremity of the last joint and the claws blackish. The under surface in both is clothed with long soft erect whitish hairs. The male of P. sayi has the last ventral segment less deeply excavated, and more widely bilobed, and the anterior tibie not so much compressed above the middle, and much less concave on the inner face. The species of Pomphopea in my collection may be recognized by the following table :— Elytra glabrous ; Knees, tibie, and tarsi blue black (surface less opaque). PoniTa. Knees, apex and tip of tibie, and all of the tarsi blue black. sayi. Knees blue black, tip of last joint of tarsi, and claws black. uNGuICULARIS. Legs rufous, trochanters and tarsi with a bluish lustre TEXANA. Elytra pubescent; head and thorax densely pubescent ; Elytra with a few short scattered hairs. ZENEA. Elytra densely pubescent, and punctured. TARSALIS. More slender ; elytra rugosely punctured and less densely pubescent. FILIFORMIS, The species with pubescent elytra are closely allied, and agree in sexual characters; the penultimate ventral segment of the male is very slightly emarginate, and the last joint is very deeply and acutely emarginate, but not excavated. The anterior tibiw are straight in both sexes. The knees, both extremities of the tibie and all the tarsi are blue black in P. ¢arsalis, but in P. anea and filiformis they are merely blackish, and sometimes scarcely obscure. 467. P. texana. Elongata, obscure viridi-wnea subnitida, capite thoraceque versus latera pilosis, illo parce punctato, hoe latitudine longiore, lateribus ante medium rotundatis postice parallelis rectis, disco punctis paucis impressis, ante basin leviter transversim impresso ; elytris thorace duplo latioribus, confertim rugose punctatis; antennis nigris, pedibus rufo-testaceis, trochanteribus tarsisque cyaneo-tinctis. Long. *54. One female from Texas. Differs at first sight from P. unquicu- laris by the narrower and more convex thorax, with the sides not sinuate. A few very small hairs are visible near the sides and tip of the elytra, but not sufficient to enable them to be described as pubescent. The erect hairs of the head and sides of the thorax April, 1866, 162 DESCRIPTIONS OF NEW SPECIES. are shorter and less fine than in P. unguicularis, and the pubes- cence of the under surface is also less fine. LWTTA Fass. 468. L. puberula. Nigro-picea enescens, pube pallida erecta ves- tita, capite thoraceque sat dense punctatis, hoc spatiis parvis levibus transversim positis, latitudine paulo breviore lateribus rotundatis ; elytris thorace fere duplo Jatioribus, confertissime punctatis, fere opacis ; antennis capite thoraceque haud longioribus, articulis externis globosis, ultimo longiore ovato, apice acuto; unguiculis testaceis. Long. -48. One specimen collected at Fort Whipple, Arizona, by Dr. Elliott Coues, U.S. A. A rather stout species, readily distin- guished by the characters given above: it belongs to the same group as L. biguttata, and, as in that species, the outer spur of the hind tibize is very thick, obliquely truncate and concave at tip, while the inner one is slender and acute. 469. L. viridama. Lete viridienea, capite thoraceqte pernitidis, illo parce punctato, puncto verticali rubro, hoe punctis paucis impressis, subpentagono, lateribus ante medium obtuse angulatis, disco bifoveato, canaliculato, antice posticeque transversim impresso, margine basali latius reflexo ; elytris thorace plus sesqui latioribus, elongatis parallelis, dense rugosis ; subtus cyanea; trochanteribus posticis muticis, antennis nigris moniliatis, articulo ultimo ovali acuto. Long. °60—-72. Mas segmento ventrali penultimo late emarginato, medio versus apicem subtiliter carinato, ultimo fere ad basin fisso, fissura setis longis fim- briata ; antennis capite thoraceque longioribus. Femina segmento ventrali penultimo trancato, ultimo breviter emarginato, apice pilosello ; antennis capite thoraceque haud longioribus. Rocky Mountains, from the Black Hills northward into the Hudson Bay Territory. A beautiful species, allied to L. nuttalli, but differing by the color, and by the hind trochanters not being armed with a tooth on the inner edge. The middle tibiz are curved, and the outer spur of the hind tibix broad, concave, and somewhat acute. The penultimate ventral segment in the male of L. nuttalli is broadly emarginate as in the present species, but the hind trochanters are armed with an acute spine, which in the female becomes a prominent angle. In L. cyanipennis the hind trochanters are similarly armed, but the penultimate ventral segment is acutely emarginate. J. salicis appears to be a variety of Z. cyanipennis, but the condition of the specimens is very bad and renders the comparison unsatisfactory. DESCRIPTIONS OF NEW SPECIES. 163 CALOPUS Fasr. A470. C. aspersus. Valde elongatus fusco-testaceus, dense punctatus, cinereo-pubescens, thorace latitudine longiore vage impresso lateribus fere rectis, versus apicem paulo rotundatis; elytris punctis parvis de- nudatis politis subseriatim positis. Long. *34—-56. Mas antennis subserratis corpore longioribus ; oculis supra approximatis, segmento ventrali quinto apice emarginato. Femina antennis tenuibus filiformibus, corpore paulo brevioribus; oculis supra distantibus ; segmento ventrali quinto apice haud emarginato. Texas, Mr. Sallé and Dr. Horn; Lower California, Mr. Xintus. This species differs from C. angustus not only by the small smooth spots of the elytra, but by the form of the thorax, which has the sides straight, merely a little rounded near the apex. In C. angustus the thorax is feebly campanulate, the sides being rounded near the apex, and then broadly sinuate to the base. The pubescence of the elytra is uniform in the latter, while in C. aspersus longer hairs are intermixed. It is interesting that C. angustus, described by me from a single New Mexican specimen, has been found quite abundantly by Mr. William Couper, near Quebec, Lower Canada. The sexual characters have not been noticed before, and are as fol. lows: Male with the antenne longer than the body, flattened, tolerably strongly serrate; eyes nearly contiguous at the vertex ; fifth ventral segment deeply and broadly emarginate, sixth elongated, emarginate at tip. Female with the antenne scarcely two-thirds the length of the body, feebly serrate; eyes distant at the vertex; fifth ventral segment broadly rounded at tip, 6th retracted, truncate. MICROTONUS Lec. A471. M. sericams. Elongatus fuscus, opacus, supra dense rugosa punctatus, pube aurea depressa brevi sericans, fronte inter antennas linea profunda (sutura clypeali) impressa, thorace subquadrato, apice vix emarginato, angulis anticis rotundatis, lateribus paulo sinuatis, angulis posticis acutis, basi utrinque paulo obliqua, medio subemargi- nata, disco indistincte canaliculato, utrinque pone medium profunde oblique impresso; elytris thorace paulo latioribus, transversim modice convexis. Long. *10—:15. Lec. Class. Col. N. America, 259. Not uncommon, from New York to Georgia, on leaves of trees in early summer. The antenne are nearly filiform, but very 164 DESCRIPTIONS OF NEW SPECIES. slightly thickened externally. The generic characters are suffi- ciently detailed in the work cited above. I observe no sexual differences, except that the antenne of the male are more than half the length of the body, and the distance between the eyes is not greater than their diameter; while in the female the antenne are shorter and the eyes more distant.* XANTHOCHROA Scumipr. 472. X. trimotata. Valde elongata, fusca, breviter pubescens, capite nitido modice punctato, flavo-testaceo, vitta longitudinali, labro, palpis maxillaribus, mandibularum apice, palporum labialium articulo ultimo antennisque nigris; thorace campanulato, latitudine longiore, lateribus sinuatis, antice rotundatis, disco nitido modice punctato, antice postice et utrinque versus latera impresso, flavo-testaceo, lateribus vittaque dorsali lata nigris; elytris dense punctatis, lineis utrinque duabus elevatis versus apicem obliteratis, tertia externa obsoleta, quar- taque submarginali distincta, limbo suturali marginalique testaceo ; subtus fusca, propectore, coxis auticis et mediis, femorum tibiarumque basi testaceis. Long. *50. One specimen, Louisiana; Mr. Ulke. Kasily distinguished from xX. lateralis by the larger size, the less finely punctured thorax, which is marked with a broad black dorsal vitta. COPIDITA Lec. Corpus elongatum gracile. Caput latitudine longius, antice sensim angustatum ; oculi subtiliter granulati, modice transversi, late distantes, antice vix sinuati; antenne filiformes, utriusque sexus 11]-articulate, articulo 2ndo brevi, 3io sequenti zquali, 1l1mo (maris) superne sinuato, * The analytical table of genera of Oedemeride, on p. 258 of Class. Coll. N. America, is quite defective ; the following may be substituted as show- ing the relations of the genera after Microtonus :— Antenne not embraced by the eyes ; middle coxe contiguous ; Body stout ; tarsi with the joints 4, 3, 2, spongy beneath. Drrytus. Body slender ; Anterior tibiz with one terminal spur ; Eyes feebly emarginate. NAcERDES. Eyes deeply emarginate. XANTHOCHROA. Anterior tibiz with two terminal spurs ; Ungues simple or obsoletely toothed ; Mandibles bifid at tip. ; CopipiTA. Mandibles acute at tip. Oxacis. Ungues strongly toothed at base ; Mandibles acute at tip. PROBOSCA. Mandibles bifid at tip. ASCLERA. DESCRIPTIONS OF NEW SPECIES. 165 quasi diviso; mandibule apice emarginate. Maxille elongate lobis angustis pilosis; palpi maxillares (maris) elongati, articulo 1mo parvo, 2ndo elongato, 3io breviore, 4to 2ndo haud breviore, dilatato, latitudine duplo longiore, latere externo concavo, interno curvato infra medium sub- angulato. Mentum trapezoideum late concavum, medio carinatum ; ligula late emarginata; palpi labiales breves, articulo ultimo dilatato, apice ob- lique rotundato. Elytra elongata, thorace latiora, dense punctata, lineis utringue quatuor elevatis vix distinctis. Pedes elongati, coxis intermediis ‘contiguis, tibiis omnibus apice bicalcaratis ; tarsis articulis pluribus subtus spongiosis, unguiculis angustis basi parum dilatatis. A733. C. quadrimaculata. Probosca quadr. Morscu. Etudes Ent. 1852, 78 ; Nacerdes quadrimaculata Manny. Bull. Mose. 1853, 267. California. The sexual characters of this species are somewhat remarkable: the fifth ventral segment of the male is deeply sinuate each side, and prominent at the middle, the lobe being slightly ¢runcate at tip; from beneath the fifth ventral proceed two long spatulate appendages, which when closed together nearly conceal the penis; under the last mentioned organ is a slender elongate corneous process, with two hooks at the ex- tremity. The female is unknown to me. OXACIS Lec. The species of this genus are numerous, and are readily recog- nized by the tip of the mandibles being acute, the claws very slightly dilated at base, the anterior tibiz having two terminal spurs, and the tarsi having only the penultimate joint spongy beneath. The species in my collection may be divided into three groups, according to the shape of the last joint of the maxillary palpi. The last joint of the antenne is feebly sinuate in the male of all the species; the right mandible in O. dorsalis is armed with a small tooth on the upper edge near the tip :— A. Last joint of maxillary palpi subcultriform, inner side subangulated nearer the base than the tip; Prothorax with a median vitta and lateral spots dark colored ; Elytra strongly punctured, finely pubescent(color varied). CANA. Elytra feebly punctured, densely pubescent. PALLIDA. Thorax convex, without medial dark line; Color pale, sides of thorax dark. TENIATA. Color black, thorax rufous or yellow; Thorax immaculate. — THORACICA. Thorax with basal and apical black spots. NOTOXOIDES. Thorax broadly concave; color piceous. GRANULATA, 166 DESCRIPTIONS OF NEW SPECIES. B. Last joint of maxillary palpi elongate-triangular, inner side subangulated nearer the tip than the base ; tip subacute ; Piceous ; head, thorax, and legs testaceous. BICOLOR. Dark piceous ; finely pubescent. FULIGINOSA. C. Last joint of maxillary palpi rounded at tip, inner side subangulated at the middle. DORSALIS. 494. ©. gramullata. Pallide picea, subtiliter cinereo-pubescens, capite thoraceque confertim punctatis, punctis versus latera subtiliori- bus, hoc latitudine longiore, postice modice angustato, disco antice late concavo, ante basin vage impresso; elytris thorace latioribus, elongatis confertim granulato-punctatis ; subtus dilutior. Long. -25—-30. Two males, Cape San Lucas, Lower California; collected by Mr. Xantus. The last joint of the maxillary palpi is subcultri- form, about twice as long as its width, and the broadest part is about one-third from the base; the 11th joint of the antenne is slightly sinuate above. The fifth ventral segment is rounded at tip. The claws are very feebly dilated at the base. . 475. O. fuligimosa. Picea subnitida, tenuiter cinereo-pubescens, capite thoraceque subtiliter punctatis, hoc latitudine longiore postice angustato, ante basin foveato, margine apicali basalique testaceis ; elytris thorace latioribus elongatis, punctulatis; palpis maxillaribus articulo ultimo triangulari, oblique subtruncato. Long. :34. Mas antennis corporis dimidio longioribus ; segmento ventrali sexto promi- nulo profunde emarginato, membro virili conspicuo. Femina antennis corporis dimidio haud longioribus ; segmento ventrali 5to apice rotundato, 6to occulto. One pair, collected at Cape San Lucas, Lower California, by Mr. Xintus. This species agrees with C. bicolor in the form of the last joint of the maxillary palpi, which is elongate triangular, and obliquely truncate at the tip, the angle on the inner margin being nearer the tip than the base. PROBOSCA Scamipt. 4%6. P. pleuralis. Elongata, pallida, subtiliter punctulata, tenuiter cinereo-pubescens, thoracis lateribus elytrorumque vitta submarginali fuscis, oculis nigris; palpis maxillaribus articulo ultimo elongato, tri- angulari, latere interno ad medium subangulato; mandibulis acutis, dextro pone apicem dente emarginato. Long. -30—-40. Two specimens, from Florida, given me by Mr. Ulke. This DESCRIPTIONS OF NEW SPECIES. 167 species agrees with Oxacis dorsalis in the form of the mandibles and palpi, but the ungues are strongly toothed at the base. 47%. PB. lucama. Minus elongata, testacea, fusca, vel fusco-vittata, subtiliter dense punctulata, tenuiter cinereo-pubescens, thorace postice modice angustato, latitudine paulo longiore, ante medium utrinque vage impresso; ore antennis pedibusque fusco-testaceis, mandibulis acutis haud dentatis. Long. :22—-36. Abundant at Cape San Lucas, Lower California; collected by Mr. Xintus. This species is somewhat robust in form, resembling Oxacis dorsalis. It varies much in color, being sometimes entirely fuscous, sometimes testaceous, but usually the thorax is varied With spots and the elytra are marked with a broad discoidal vitta, and a shorter one near.the scutellum. I observe no sexual differ- ences. LACCONOTUS Lec. 478. L. pumctatus. Elongatus niger, confertim punctatus, subtiliter pubescens, thorace latitudine haud breviore, subquadrato, lateribus antice late rotundatis, medio subcarinato, utrinque vage foveato ; elytris thorace latioribus, elongatis transversim parum convexis; abdominis segmento ventrali lmo brevi, 2ndo elongato macula magna pallida signato; antennis capite thoraceque haud longioribus, subserratis, articulo 3io precedente sesqui longiore. Long. °17. Lec. Class. Col. N. America, 255. One specimen, given by the Rev. D. Ziegler, as found in York County, Pa. The generic characters are sufficiently detailed in the work above cited. I will merely add that, although the head is not prolonged into a beak, I have associated this genus with Mycterus on account of the small size of the middle coxex, the dilatation of the penultimate tarsal joint, and the absence of the lateral suture of the prothorax. The short 1st ventral segment is a singular character, not found in Mycterus, nor in any of the neighboring families ; the 2d ventral is nearly as long as the two following united, and is tumid at the middle with the anterior outline convex forwards; a large pale yellow spot occupies the whole of the middle portion; the 5th ventral is not shorter than the 4th, and is rounded at tip. T regard this genus a connecting form from Mycterus to Pythide, though the full development of its relationships must depend on the discovery of other specimens. 168 DESCRIPTIONS OF NEW SPECIES. PYTHO Larr. 479. BP. strictus. Rufo-piceus nitidus, capite parce subtilius punc- tato, thorace latitudine breviore, lateribus valde ampliato-dilatatis, tumidis, propre basin sinuatis, angulis posticis rectis, parce punctato, profunde canaliculato, utrinque valde excavato ; elytris thorace latiori- bus postice vix ampliatis, subtiliter punctulatis, pone basin sulcatis. Long. “65. One specimen from Canada. The head is more finely punctured than in P. niger and americanus, and the thorax is much more elevated and dilated upon the sides, with the hind angles quite conspicuous; the discoidal impressions are deeper, and the two portions of each impression are more distinctly defined. The elytra are as finely punctulate as in P. americanus. SALPINGUS Gytt. ASO. S. tibialis. Supra eneo-niger nitidus, capite punctato, fronte brevi late bifoveato, vertice obsolete foveato, thorace latitudine sub- longiore postice angustato, utrinque ad latera impresso, ante basin transversim impresso; elytris thorace latioribus, subtilius seriatim punctatis, interstitiis alternis parce uniseriatim punctatis ; subtus nigro- piceus, tibiis tarsisque piceo-testaceis, antennis piceo-testaceis, articulis externis piceis. Long. :12. One specimen, from Kansas, given me by Dr. 8. Lewis. The thorax is narrower and more convex than in S. virescens, and the punctures are more distant, agreeing in these characters with S. alternatus : in the latter the thorax is scarcely impressed, and in both species the legs are completely blackish. RHINOSIMUS Latr. ASi. R. mitems. Elongatus, nigro-zneus pernitidus, capite cum rostro fortiter punctato, hoc fronte angustiore, plano, ultra antennas dilatato, margine apicali oreque testaceis ; thorace latitudine vix longiore, postice angustato, lateribus antice rotundatis, disco rude punctato, quadri- foveato; elytris thorace fere duplo latioribus, seriatim punctatis, inter- stitiis alternis uniseriatim parce punctatis, pone basin profunde arcuatim transverse impressis; subtus piceus, vel piceo-testaceus ; capite subtus grosse punctato. Long. °15. Maine and Canada; rare. I have received one specimen from Dr. A. 8S. Packard, and another from Mr. W. Saunders of Lon- don, C. W. The under surface with the legs is pale piceous in one, but nearly black in the other. ALPHABETICAL INDEX. abdominalis, Macrosiagon, 154 Acidota patruelis, 56 seriata, 55 tenuis, 55 Acmeodera subbalteata, 82 acutus, Epitragus, 108 Acylophorus gilensis, 34 pratensis, 34 Adranes ccecus, 27 reneolus, Pedilophorus, 74 snescens, Xylopinus, 120 sequus, Hister, 61 Alaus melanops, 83 albipes, Tachys, 20 Allopoda lutea, 144 alternatus, Cratognathus, 13 americanum, Trimium, 28 americanus, Oxylemus, 68 Sphindus, 104 Telmatophilus, 70 amcenus, Anomoglossus, 12 : Discoderus, 14 Amphicerus fortis, 101 Amphichroum floribundum, 56 Amphicyllis picipennis, 25 Anachilus mandibularis, 86 analis, Bledius, 52 angulare, Lathrobium, 43 angulatus, Anophthalmus, 18 angustulum, Cerylon, 69 Anisodactylus furvus, 14 harrisii, 14 punctulatus, 14 rudis, 15 Anisoxya glaucula, 150 annularis, Bledius, 53 Anomala centralis, 78 Anomoglossus amcenus, 12 Anophthalmus angulatus, 18 Antherophagus convexulus, 71 apicalis, Epistemus, 72 Helodes, 87 armatus, Bledius, 51 armiger, Bostrichus, 100 arundinis, Epitragus, 108 aspera, Eleodes, 115 aspersus, Calopus, 103 Atemeles cava, 30 athoides, Monocrepidius, 84 Athous maculicollis, 85 atra, Metaclisa, 127 atriceps, Lebia, 5 atrum, Cyllidium, 24 Attalus humeralis, 94 Aulonium tuberculatum, 67 Bactrocerus, concolor, 143 badipe:, Staphylinus, 36 balteatum, Ptilium, 62 baltifera, Tachyusa, 29 barbata, Temnochila, 65 basalis, Bledius, 54 batrisoides, Circocerus, 27 Bembidium morulum, 19 nebraskense, 19 obtusangulum, 19 recticolle, 19 Berginus pumilus, 72 Berosus pugnax, 24 bicolor, Rhombodera, 7 biguttula, Lesteva, 55 Blapstinus obliquus, 117 Blechrus pusio, 6 Bledius analis, 52 annularis, 53 armatus, 51 basalis, 54 diagonalis, 52 divisus, 53 flavipenis, 52 forcipatus, 54 fumatus, 52 nitidicollis, 52 opaculus, 54 ornatus, 53 ruficornis, 53 semiferrugineus, 52 suturalis, 54 Blethisa julii, 2 Boletobius gentilis, 31 longiceps, 32 rostratus, 32 (169) 4 170 ALPHABETICAL INDEX. borealis, Cymindis, 7 Bostrichus armiger, 100 truncaticollis, 101 brachyderus, Catops, 25 Bradycellus linearis, 16 Branchus floridanus, 111 woodii, 111 brevicollis, Helodes, 88 brevipenne, Lathrobium, 44 brunneum, Ptilium, 62 brunneus, Diploccelus, 73 Bryoporus flavipes, 52 rubidus, 33 rufescens, 33 testaceus, 33 californica, Euryomia, 80 Loricera, 3 californicum,. Lathrobium, 44 californicus, Heterothops, 35 Lispinus, 59 eallosa, Epicauta, 158 Calopus aspersus, 163 canadense, Ptilium, 62 canaliculata, Corphyra, 143 Canifa plagiata, 144 eapax, Tachys, 20 earbonaceus, Meloe, 155 carbonatus, Staphylinus, 38 Carebara longula, 148 earinatus, Eulachus, 68 carus, Stenolophus, 18 caudatus, Platynus, 7 Catogenus linearis, 70 Catops brachyderus, 25 cava, Atemeles, 30 Uloma, 124 cavicollis, Lyctus, 103 Tachyusa, 29 eavifrons, Euplectus, 28 cavus, Hypephleus, 129 Celina grossula, 22 centralis, Anomala, 78 Cerylon angustulum, 69 chalybeus, Dianous, 49 Chauliognathus opacus, 90 Chleenius sparsus, 12 cicatricosus, Staphylinus, 37 Cicindela hyperborea, 1 cinctipennis, Podabus, 91 Circocerus batrisoides, 27 Clambus puberulus, 26 clavicornis, Microsecapha, 153 clemens, Platynus, 8 Clerus tantillus, 96 Clivina texana, 4 Cnemidotus edentulus, 21 muticus, 21 ececus, Adranes, 27 Collops insulatus, 94 limbatus, 94 Colpius inflatus, 22 Colydium nicripenne, 67 comes, Staphylinus, 36 comma, Stenus, 50 communis, Hymenorus, 135 compotens, Paderus, 38 compressus, Gyretes, 23 concolor, Bactrocerus, 143 Dirceea, 149 Haplandrus, 121 Lathrobium, 44 confertus, Hymenorus, 130 Philonthus, 40 Polyeaon, 103 confinis, Eustrophus, 162 Coniontis lata, 113 connivens, Pelecyphorus, 110 consors, Mycetoporus, 34 Philhydrus, 24 convexulus, Antherophagus, 71 convexus, Emmenastus, 107 convolvuli, Epicauta, 157 Copidita quadrimaculata, 165 Coproporus grossulus, 31 levis, 31 punctipennis, 31 Corphyra canaliculata, 143 Corymbites morulus, 85 ochreipennis, 85 vulneratus, 86 Coryphium guttatum, 58 notatum, 58 pallidum, 57 eostata, Eupleurida, 142 costatus, Sosylus, 68 Cotalpa puncticollis, 78 Coxelus guttulatus, 65 Cratognathus alternatus, 13 Cregya mixta, 98 Cremastochilus planatus, 81 crenatus, Delopygus, 130 crenistriatus, Platynus, 9 cretacea, Gymnetis, 80 cribratum, Cryptobium, 46 cribratus, Dinoderus, 102 Micropeplus, 60 Cryptobium cribratum, 46 despectum, 45 pimerianum, 45 pusillum, 45 sellatum, 45 serpentinum, 46 Cryptohypnus granicollis, 83 planatus, 84 Cteniopus murrayi, 141 Cybocephalus nigritulus, 64 Cychrus violaceus, 4 Cyclocephala longula, 79 puberula, 80 robusta, 79 seditiosa, 79 eylindricum, Nemosoma, 65 eylindricus, Ips, 64 Cyllidium atrum. 24 Cymatodera fascifera, 95 pilosella, 95 angustata, 96 ALPHABETICAL INDEX. ITs Cymatodera ovipennis, 96 ’ Cymindis borealis, 7 hudsoniea, 6 planipennis, 6 Dacnochilus letus, 47 Dasydera rathvoni, 76 Dearthrus longulus, 73 debilis, Hallomenus, 152 Phaleria, 126 decipiens, Philonthus, 40 Delopygus crenatus, 150 densicollis, Listrochelus, 77 densus, Dinoderus, 102 Horistonotus, 83 Hymenorus, 137 Pinophilus, 48 depressus, Hypoeyptus? 30 desidiosus, Pterostichus, 11 despectum, Crypiobium, 45 despectus, Hydrobius, 25 Diachila subpolaris, 2 diagonalis, Bledius, 52 Dianous chalybeus, 49 Diczlus turbulentus, 12 dilatatus, Microphotus, 90 Dinoderus cribratus, 102 densus, 102 poreatus, 101 Dicedus punctatus, 131 Diplocelus brunneus, 73 Diplotaxis puberulus, 76 Direxa concolor, 149 Discogenia marginata, 117 seabricula, 117 Diseoderus amcenus, 14 discretus, Helops, 134 dissectus, Platynus, 8 Ditoma laticollis, 66 divisus, Bledius, 53 Drapetes rubricollis, 82 dubius, Philonthus, 39 Dyschirius hispidus, 4 Banus maculipennis, 85 Echiaster nitidus, 47 opacus, 46 Edaphus nitidus, 50 edentulus, Cnemidotus, 21 Elaphrus olivaceus, 1 Eleodes aspersa, 115 planipennis, 110 granosa, 116 subaspera, 115 innocens, 114 luce, 114 Emmenastus convyexus, 107 obtusus, 107 punctatus, 106 pinguis, 107 texanus, 108 Enchodes sericea, 149 Endectus nitidus, 69 Enoplium scabripenne, 98 Epicauta callosa, 158 convolvuli, 157 pardalis, 157 pedalis, 157 pruinosa, 158 sericans, 158 Epistemus apicalis, 72 Epitragus acutus, 108 arundinis, 108 plumbeus, 109 tomentusus, 109 Eucinetus oviformis, 88 testaceus, 88 Eudesma undulata, 66 Eulabis grossa, 118 Eulachus ecarinatus, 68 Euplectus cavifrons, 28 ruficeps, 28 Eupleurida costata, 142 Eupsenius rufus, 28 Eurymetopon punctulatum, 105 serratum, J06 Euryomia californica, 80 Eurytrichus flebilis, 16 Eusattus levis, 113 rebustus, 112 Euschides puncticollis, 111 Eustrophus confinis, 152 Euthysanius pretiosus, 86 Evarthrus torvus, 9 Evoplus ferrugineus, 128 excisus, Megarthrus, 58 explanata, Helodes, 87 faretus. Trigonogenius, 100 fasciatus, Isomalus, 59 fascifera, Cymntodera, 95 fatuus, Harpalus, 17 fayi, Podabrus, 91 ferrugineus, Evoplus, 128 filiforme, Nematidium, 68 flavicollis, Mycetoporus, 33 flavipennis, Bledius, 52 Macrosiagon, 153 flavipes, Bryoporus, 32 Leptacinns, 41 flebilis, Eurytrichus, 16 floribundum, Amphichroum, 56 floridanus, Branchus, 111 fluvialis, Oodes, 13 foreipatus, Bledius, 54 fortis, Amphicerus, 101 foveata, Mycetochares, 140 foveicolle, Ptenidium, 63 fraterna, Mycetochares, 139 Crstela, 139 frontalis, Oehodus, 76 fuliginosa, Oxacis, 166 fuliginosus, Malthodes, 93 fumatus, Bledius, 52 fumigatus, Heterothops, 35 funci, Ptilium, 62 furvus, Anisodactylus, 14 . fusculus, Heterothops, 35 172 ALPHABETICAL INDEX. fusculus, Prateus, 131 gentilis, Boletobius, 51 Laccophilus, 25 gilensis, Acylophorus, 34 glabriculus, Philothermus, 69 glaucula, Anisoxya, 150 gnatho, Heterocerus, 74, gracilis, Rhinandrus, 120 gracillima, Tachyusa, 29 grande, Lathrobium, 42 grandiceps, Leptolinus, 42 Narthecius, 70 grandicollis, Cryptohypnus, 8 granosa, EHleodes, 116 cranulata, Oxacis, 166 gratus, Philonthus, 38 grossa, Kulabis, 118 Microstemma, 26 grossula, Celina, 22 grossulus, Coproporus, 31 guttatum, Coryphium, 58 guttulata, Lobiopa, 64 guttulatus, Coxelus, 65 Gymnetis cretacea, 80 Gynandrotarsus opaculus, 16 Gyretes compressus, 23 haldemani, Mycetochares, 140 Hallomenus debilis, 152 punctulatus, 152 Haplandrus concolor, 121 Haploderus laticollis, 55 linearis, 54 Harpalus fatuus, 17 innocuus, 17 harrisii, Anisodactylus, 14 Helodes apicalis, 87 brevicollis, 88 explanata, 87 Helops discretus, 134 impolitus, 152 punctipennis, 133 rugicollis, 133 suleipennis, 133 tumescens, 134 undulatus, 132 Hesperobzenus rufipes, 65 Heterocerus gnatho, 74 labiatus, 75 luteolus, 75 ventralis, 75 Heterothops californicus, 35 fumigatus, 35 fusculus, 35 pusio, 35 hispida, Zilora, 148 hispidus, Dyschirius, 4 Mister wequus, 61 perplexus, 61 semisculptus, 60 subopacus, 60 Iloloparamecus pacifieus, 72 Horistonotus densus, 83 Horistonotus simplex, 83 hudsonica, Cymindis, 6 Nebria, 3 hudsonicus, Pterostichus, 11 humeralis, Attalus, 94 Hymenorus, 135 Hydaticus piceus, 23 Hydnobius substriatus, 25 Hydnocera pedalis, 97 schusteri, 97 subfasciata, 97 Hydrobius despectus, 25 Hydrocanthus nanulus, 22 Hydroporus rotundatus, 21 hydropicus, Stenolophus, 17 Hymenorus communis, 135 confertus, 136 ° densus, 137 humeralis, 135 punctatissimus, 137 rufipes, 136 hyperborea, Cicindela, 1 Hypocyptus? depressus, 30 Hypocyptus testaceus, 30 ziegleri, 30 Hypophleeus cavus, 129 Hyporhagus opaculus, 142 Hypotelus picipennis, 59 imberbis, Uloma, 123 impolitus, Helops, 132 impressus, Loberus, 70 inflatus, Colpius, 22 innocens, Eleodes, 114 innocuus, Harpalus, 17 insulatus, Collops, 94 Iphthimus opacus, 121 Ips cylindricus, 64 Isomalus fasciatus, 59 nigrellus, 59 pallidus, 58 Isomira quadristriata, 138 velutina, 139 jacobinum, Lathrobium, 43 janthina, Lebasiella, 99 julii, Blethisa, 2 labiatus, Heterocerus, 75 Lacconotus punctatus, 167 Laccophilus gentilis, 23 Lachnosterna maculicollis, 76 nitidula, 77 letulus, Pterostichus, 10 letus, Dacnochilus, 47 levis, Coproporus, 31 Eusattus, 113 Laricobius rubidus, 99 larvalis, Palaminus, 49 Lasconotus pusillus, 67 lata, Coniontis, 113 laticollis, Ditoma, 66 Lathridius liratus, 72 Lathrobium angulare, 43 ALPHABETICAL INDEX. 173 Lathrobium brevipenne, 44 ealifornicum, 44 concolor, 44 grande, 42 jacobinum, 43 nigrum, 43 pedale, 43 punctulatum, 42 seriatum, 44 simile, 43 tenue, 44 laticollis, Haploderus, 55 Lebasiella janthina, 99 nigripennis, 99 Lebia atriceps, 5 lobulata, 5 Jepidulus, Philonthus, 37 Leptacinus flavipes, 41 longicollis, 41 Leptolinus grandiceps, 42 nigripennis, 42 pareus, 41 ruficollis, 42 Lesteva biguttula, 55 pallipes, 55 picescens, 55 limbalis, Pyrota, 160 limbatus, Prionoeyphon, 87 Collops, 94 Limnius ovalis, 74 Limonius ornatipennis, 84 linearis, Bradycellus, 16 Catogenus, 70 Haploderus, 54 Rhipiphorus, 154 lineatum, Ptenidium, 63 liratus, Lathridius, 72 Lispinus californicus, 59 obseurus, 59 rufescens, 59 tenuis, 60 Listrochelus densicollis, 77 lithocharinus, Philonthus, 38 lividus, Palaminus, 49 Loberus impressus, 70 Lobiopa guttulata, 64 setulosa, 63 lobulata, Lebia, 5 longiceps, Boletobius, 32 longicollis, Leptacinus, 41 longula, Carebara, 148 Cyclocephala, 79 Phaleria, 125 longulus, Dearthrus, 73 Loricera californica, 3 neoscotica, 3 luc, Eleodés, 114 Pelidnota, 78 Iueana, Probosea, 167 lucidulus, Mycetoporus, 33 Juteolus, Heterocerus, 75 Lyctus cavicollis, 103 planicollis, 103 opaculus, 103 Lytta puberula, 162 viridana, 162 Macrobasis virgulata, 156 Macrosiagon abdominalis, 154 flavipennis, 153 marginalis, 153 maculicollis, Athous, 85 Lachnosterna, 76 maculipennis, Eanus, 85 Malthodes fuliginosus, 93 spado, 93 . mandibularis, Anachilus, 86 marginalis, Macrosiagon, 154 marginata, Disecogenia, 117 marginatus, Omethes, 90 Marginus rudis, 73 Megalops rufipes, 51 Megarthrus excisus, 58 melanops, Alaus, 83 Meloe carbonaceus, 155 montanus, 155 tinctus, 155 parvulus, 156 Metaclisa atra, 127 Micralymma stimpsonii, 57 Micropeplus cribratus, 60 sculptus, 60 Microphotus dilatatus, 90 Microscapha clavicornis, 153 Microstemma grossa, 26 motschulskii, 26 Microtonus sericans, 163 mixta, Cregya, 98 Monocrepidius athoides, 84 monstrosus, Sunius, 48 montanus, Meloe, 155 morulum, Bembidium, 19 morulus, Corymbites, 85 motschulskii, Microstemma, 26 murrayi, Cteniopus, 141 muticus, Cnemidotus, 21 Mycetochares fraterna, 139 foveata, 140 haldemani, 140 tenuis, 140 Mycetoporus consors, 34 flavicollis, 33 lucidulus, 33 nanulus, Hydrocanthus, 22 Narthecius grandiceps, 70 nebraskense, Bembidium, 19 Nebria hudsonica, 3 rudis, 3 Nematidium filiforme, 68 Nemosoma cylindricum, 65 neoscotica, Loricera, 3 nigrella, Tachyusa, ZY nigrellus, Isomalus, 59 nigripenne, Colydium, 67 nigripennis, Lebasiella, 99 Leptolinus, 42 Psilopyga, 64 Ea ALPHABETICAL INDEX. nigripennis, Synchita, 67 nigritulus, Cybocephalus, 64 nigrovittis, Ptilium, 63 nigrum, Lathrobium, 43 nitens, Rhinosimus, 168 nitidicollis, Bledius, 52 nitidula, Lachnosterna, 77 nitidus, Echiaster, 47 Edaphus, 50 Endectus, 69 Polypleurus, 118 Nomaspis parvulus, 156 notatum, Coryphium, 58 Nothus varians, 145 Notibius opacus, 118 obliquus, Blapstinus, 117 obseurus, Lispinus, 59 obtusangulumn, Bembidium, 19 obtusus, Emmenastus, 107 Ochodeeus frontalis, 76 ochreipennis, Corymbites, 85 Olibrus vittatus, 63 olivaceus, Elaphrus, 1 Omethes marginatus, 90 Oodes fluvialis, 13 texanus, 13 opaculus, Bledius, 54 Gynandrotarsus, 16 Hyporhagus, 142 Lyctus, 103 Platynus, 8 opacus, Chauliognathus, 90 Echiaster, 46 Iphthimus, 121 Notibius, 118 Philonthus, 40 Phytosus, 28 Pinophilus, 49 oregonus, Telephorus, 92 ornaticauda, Staphylinus, 37 ornatipennis, Limonius, 84 ornatus, Bledius, 53 ovalis, Limnius, 74 oviformis, Eucinetus, 88 Oxacis granulata, 166 fuliginosa, 166 Oxylemus americanus, 68 Oxyporus quinquemaculatus, 51 rufipennis, 51 pacificus, Holoparamecus, 72 pederoides, Philonthus. 38 Pederus compotens. 48 Palaminus larvalis, 49 lividus, 49 pallipes, 49 pallens, Pleotomus, 88 pallidum. Coryphium, 57 pallidus, Isomalus, 58 Pentaphyllus, 126 pallipes, Lesteva, 55 Palaminus, 49 pareus, Leptolinus, 41 parcus, Pinophilus, 48 pardalis, Epicauta, 157 parvulus, JMe/oe, 155 Nomzspis, 155 Proteinus, 58 Patrobus rufipes, 18 patruelis, Acidota, 56 pedale, Lathrobium, 43 pedalis, Hydnocera, 97 Epicauta, 157 Pedilophorus seneolus, 74 Pelecyphorus conniyens, 110 Pelidnota Juem, 78 Pentaphyllus pallidus, 126 perforatus, Platynus, 9 Triphalus, 104 perplexus, Hister, 61 Phaleria debilis, 126 longula, 125 pilifera, 125 Phileurus vitulus, 80 Philhydrus simplex, 24 consors, 24 Philonthus confertus, 40 decipiens, 40 dubius, 39 gratus, 38 lepidulus, 37 lithocharinus, 38 opacus, 40 pederoides, 38 sulcicollis, 40 terminalis, 38 umbripennis, 38 Philothermus glabriculus, 69 Phytosus opacus, 28 picescens, Lesteva, 55 piceus, Hydaticus, 23 picipennis, Amphicyllis, 25 Hypotelus, 59 pilifera, Phaleria, 125 pilosella, Cymatodera, 95 pimerianum, Cryptobium, 45 pinguis, Emmenastus, 107 pini, Ptilium, 62 Pinophilus densus, 48 opacus, 49 parcus, 48 planatus, Cremastochilus, 81 Cryptohypnus, 84 planicollis, Lyctus, 103 planipennis, Cymindis, 6 Eleodes, 116 planulatus, Schizogenius, 5 Platynus caudatus, 7 clemens, 8 crenistriatus, 9 © dissectus, 8 opaculus, 8 perforatus, 9 subsericeus, 8 Pleotomus pallens, 88 pleuralis, Probosea, 166 Plochionus valens, 5 ALPHABETICAL INDEX. 175 plumbeus, Epitragus, 109 Podabrus cinetipennis, 91 fayi, 91 protensus, 91 Polycaon eonfertus, 103 pubescens, 102 punctatus, 102 Polypleurus nitidus, 118 Pomphopecea texana, 161 unguicularis, 160 poreatus, Dinoderus, 101 postica, Pyrota, 160 pratensis, Acylophorus, 34 Prateus fusculus, 131 pretiosus, Euthysanius, 86 Prionocyphon limbatus, 87 Probosea pleuralis, 166 lucana, 167 Proteinus parvulus, 58 protensus, Pterostichus, 12 Podabrus, 91 Prothalpia undata, 145 pruinosa, Epicauta, 158 Psilopyga nigripennis, 64 Ptenidium foveicolle, 63 lineatum, 63 Pterostichus desidiosus, 11 hudsonicus, 11 letulus, 10 protensus, 12 sphodrinus, 10 splendidulus, 10 texanus, 10 tumescens, 11 Ptilium balteatum, 62 brunneum, 62 canadense, 62 fungi, 62 nigrovittis, 63 pini, 62 quercus, 63 testaceum, 62 Ptosima walshii, 81 puberula, Cyclocephala, 80 Lytta, 162 puberulus, Clambus, 26 Diplotaxis, 76 Schoenicus, 110 pubescens, Polyeaon, 102 pugnax, Berosus, 24 pulchellus, Tomarus, 71 pumilus, Berginus, 72 punctatissimus, Hymenorus, 137 punctatus, Lacconotus, 167 punctatum, Trogoxylon, 104 punctatus, Polyeaon, 102 Emmenastns, 106 Dicedus, 131 puncticollis, Cotalpa, 78 Euschides, 111 punctipennis, Coproporus, 31 Helops, 133 punctulata, Uloma, 124 punctulatum, Eurymetopon, 105 12 \ punctulatum Lathrobium, 42 punctulatus, Anisodactylus, 14 Hallomenus, 152 pusillum, Cryptobium, 45 pusillus, Lasconotus, 67 pusio, Blechrus, 6 Heterothops, 35 Pyenomerus sulcicollis, 69 pyramidalis, Seydmenus, 27 Pyrota limbalis, 160 postica, 160 terminata, 159 Pytho strictus, 168 quadrimaculata, Copidita, 165 INacerdes, 165 Probosca, 165 quadrispinosum, Sinoxylon, 100 quadristriata, Crstela, 138 Tsomira, 138 quercus, Ptilium, 63 quinquemaculatus, Oxyporus, 51 rathvoni, Dasydera, 76 recticolle, Bembidium, 19 renifer, Stenus, 50 Rheboscelis tenuis, 82 Rhinandrus gracilis, 120 Rhinosimus nitens, 168 Rhipiphorus linearis, 154 Rhombodera bicolor, 7 robusta, Cyclocephala, 79 robustus, Eusattus, 112 rostratus, Boletobius, 32 rotundatus, Hydroporus, 21 Stenolophus, 17 rubidus, Bryoporus, 33 Laricobius, 99 rubricollis, Drapetes, 72 rudis, Anisodactylus, 15 Marginus, 73 Nebria, 3 Stilicus, 46 rufescens, Bryoporus, 33 Lispinus, 59 ruficeps, Euplectus, 28 ruficollis, Leptolinus, 42 ruficornis, Bledius, 53 Triphyllus, 72 rufipennis, Oxyporus, 51 rufipes, Hesperobeenus, 65 Hymenorus, 136 Megalops, 51 Mycetophila, 136 Patrobus, 18 rufus, Eupsenius, 28 rugicollis, Helops, 133 Salpingus tibialis, 168 Saprinus seminitens, 61 seabricula, Discogenia, 117 seabripenne, Enoplium, 98 Schizogenius planulatus, 5 Schcenicus puberulus, 110 176 schusteri, Hydnocera, 97 scopus, Telephorus, 92 Scraptia sericea, 144 flavicollis, 151 rugosa, 151 sculptus, Micropeplus, 60 Seydmenus pyramidalis, 27 seditiosa, Cyclocephala, 79 seditiosus, Tharsus, 122 sellatum, Cryptobium, 45 semicolon, Stenus, 50 semiferrugineus, Bledius, 52 seminitens, Saprinus, 61 semisculptus, Hister, 60 seriata, Acidota, 55 seriatum, Lathrobium, 44 sericans, Epicauta, 158 Microtonus, 163 sericea, Enchodes, 149 Orchesia, 144 Dircea, 149 Phloiotrya, 149 serpentinum, Cryptobium, 46 serratum, Eurymetopon, 106 setulosa, Lobiopa, 63 simile, Lathrobium, 43 simplex, Horistonotus, 83 Philhydrus, 24 Sinoxylon quadrispinosum, 100 Sosylus costatus, 68 spado, Malthodes, 93 sparsus, Chlenius, 12 sphodrinus, Pterostichus, 10 Sphindus americanus, 104 splendidulus, Pterostichus, 10 Staphylinus badipes, 36 carbonatus, 36 cicatricosus, 37 comes, 36 ornaticauda, 37 Statira subnitida, 141 Stenolophus carus, 18 hydropicus, 17 rotundatus, 17 Stenus comma, 50 renifer, 50 semicolon, 50 Stilicus rudis, 46 stimpsonii, Micralymma, 57 striatus, Trigonodemus, 56 strictus, Pytho, 168 subaspera, Eleodes, 115 subbalteata, Acmzodera, 82 subceruleus, Trigonophorus, 35 subfasciata, Hydnocera, 97 subnitida, Statira, 141 subopacus, Hister, 60 subpolaris, Diachila, 2 subsericeus, Platynus, 8 substriatus, Hydnobius, 25 sulcicollis, Philonthus, 40 Pyecnomerus, 69 sulcipennis, Helops, 133 Sunius monstrosus, 48 ALPHABETICAL INDEX. suturalis, Bledius, 54 Symphora flavicollis, 151 rugosa, 151 Synchita nigripennis, 67 Tachys albipes, 20 capax, 20 ventricosus, 20 Tachyusa baltifera, 29 cavicollis, 29 gracillima, 29 nigrella, 29 tantillus, Clerus, 96 Telephorus scopus, 95 oregonus, 92 Telmatophilus americanus, 70 Temnochila barbata, 65 tenue, Lathrobium, 44 tenuis, Acidota, 55 Lispinus, 60 Mycetochares, 140 Rhebosceelis, 82 terminalis, Philonthus, 38 terminata, Pyrota, 159 testaceus, Bryoporus, 33 Eucinetus, 88 Hypocyptus, 30 testaceum, Ptilium, 62 Tetragonoderus undulatus, 6 Tetratoma truncorum, 145 texana, Clivina, 4 Pomphopoea, 160 texanus, Emmenastus, 108 Oodes, 13 Pterostichus, 10 Tharsus seditiosus, 122 tibialis, Salpingus, 168 tinetus, Meloe, 155 Tomarus pulchellus, 71 tomentosus, Epitragus, 109 torvus, Evarthrus, 9 Trigonodemus striatus, 56 Trigonogenius farctus, 100 Trigonophorus subcceruleus, 35 Trimium americanum, 28 trinotata, Xanthochroa, 164 Triphalus perforatus, 104 Triphyllus ruficornis, 72 Trogoxylon punctatum, 104 truncaticollis, Bostrichus, 101 truncorum, Tetratoma, 145 tuberculatum, Aulonium, 67 tumescens, Helops, 134 Pterostichus, 11 turbulentus, Diczlus, 12 Uloma cava, 124 imberbis, 123 punctulata, 124 umbripennis, Philonthus, 38 undata, Prothalpia, 145 undulata, Eudesma, 66 undulatus, Helops, 134 Tetragonoderus, 6 ALPHABETICAL INDEX. 177 unguicularis, Pomphopea, 160 | vulneratus, Corymbites, 86 valens, Plochionus, 5 walshii, Ptosima, 81 varians, Nothus, 145 woodii, Branchus, 111 ventralis, Heterocerus, 75 ventricosus, Tachys, 20 Xanthochroa 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