........ '.■■..■.:■■ .-..- '. .''.■•■ IRONTISPIECh i w : CATALOGUE HALTICIDJ1 IN THE COLLECTION BRITISH MUSEUM. BY The Rev. HAMLET CLARK, M.A., F.L.S. ■ PHYSAPODES AND (EDIPODES. • PART I. LONDON: T HINTED BY ORDER OF THE TRUSTEES. 1860. PRINTED BY TAYLOR AND FRANCIS, RED LION COUBT, FLEET STREET. P R E F A C E. This Catalogue contains descriptions of the species of Phy- sapodous and CEdipodous Halticid^e in the British Museum Collection, and of the species of the group which are con- tained in other Collections, showing the desiderata. In the " Introductory Remarks " the Rev. Hamlet Clark has given an account of the group, and the object of the Catalogue. JOHN EDWARD GRAY. August 15, I860. INTRODUCTORY REMARKS. The present volume contains part of the first two divisions of the group of Halticid^e, proposed by Illiger (Mag. fur Insekt., Sechster Band, 1807), and consists of a classification and descriptions not only of the species of the section that are contained in the British Museum, but also of those existing in the cabinets of MM. Chev- rolat, Deyrolle, Dohrn, and Lacordaire, as well as of Messrs. Baly, Bates, Fry, J. Gray, Miers, Murray, "Waterhouse, and my own. The great kindness and liberality of these gentlemen has enabled me to describe in the present volume forty- two genera, consisting of 245 species. With regard to the geographical stations of these species, one only is known from the kingdom of Chili ; 136 are found in the regions of Brazil south of the Amazon (6 of these are insular, one being from the Island of St. Catherine, and 5 from the Island of St. Paul) ; 65 are found in the basin of the River Amazon (between the Delta and Peru), while the part of the continent north of the Amazon Basin furnishes 27 (of which the district round Cayenne supplies 11, Venezuela 6, New Granada 4, and Columbia 6). Six species are found in Mexico and the south of North America, one insular species (JEdmon sencellum) being indigenous to Porto Pico. In addition to these, 3 species are found in other countries of North America — one in Pennsylvania, and 2 in Philadelphia. Three species only are found in Africa — one (Eutornus Africanus) at Sierra Leone, one (-?%- sonychis smaragdina) in Senegal, and a third (Lithonoma Africana) near Tangiers ; two only are found in Europe (Lithonoma cincta, VI INTRODUCTORY REMARKS. Fab., and L. Andaluslaca, Rosenh.) ; and three others are, as to their localities, doubtful. It thus appears that of the species contained in this volume, South America produces 228 North America 9 Africa 3 Europe 2 Doubtful 3 245 and Asia and Australia none. Owing to the comparative rarity of all the species here described, and consequently the paucity of them in collections, it is not easy to assign to each its distinct geographical range ; very few appear to be widely distributed ; each seems to have but the basin of a single river, or one single island on the coast, or one range of mountains as its sole locality ; and it is interesting to observe that the range of the genera as well as that of the individual species appear to be (as a rule) equally circumscribed. For example, the beautiful genus Mono- platus has as yet been found only on the Organ Mountains and in the neighbourhood of Rio Janeiro * ; the veiy distinct form of Ceri- chrestus is met with only in the north of that continent, the Amazon, and Cayenne ; the two European species of the genus Lithonoma, found in Spain and Portugal, are closely allied to each other ; and although a third species of this genus has been discovered in Africa, it was taken near Tangiers, on the immediately opposite coast of the Straits of Gibraltar. On the other hand, however, instances are to be found where a single genus appears to have a widely extended range. The genus Loxoprosopus is represented in the province of Rio by L. ceramboides, while, in the far-distant region of the Amazon, other species that evidently belong to this same genus have been taken by Mr. Bates. In a case like this, we may reasonably infer that other species of the genus still have to be discovered in the vast central district of Brazil, which will unite together these species geographically. * M. semiviolaeeus is stated to be from Cayenne ; but this, in my opinion, seems to require to be substantiated. INTRODUCTORY REMARKS. VU So far as we know, the southern and colder regions of the con- tinent of South America, Patagonia, and the south of La Plata supply no representatives of the groups described in this volume*, — the limits of their distribution throughout the world being appa- rently, in the south, 32° or 34°, and in the north, 40°. The Euro- pean species are found, as has been noticed, in the south of Portugal and Spain (that is, between the degrees of 36 and 38) ; although on one occasion I took examples of LiiJwnoma cincta, Fab., at Bar- quero, on the Asturian shores of the Bay of Biscay, in latitude 43° nearly f. But between these limits the group would appear to be generally distributed ; we have no reason to suppose the existence of any special numerical centre or centres ; wherever the district has been examined, there species have been found to be indigenous, and the number of species discovered always bears a fair proportion to the amount of labour and patience that has been expended in research. Thus (and thus solely) we have more species from the neighbourhood of Rio Janeiro than from any other three or four localities united ; not because the province of Rio is a focus where examples of this group especially abound, but because in other provinces we have not had the advantages of the residence of such zealous and able naturalists as Mr. Fry and Mr. Miers. Thus, also, the district of the Amazon supplies to us, in this and other groups, more new genera and species than the districts of Bahia and Pernambuco; but only because we still have to find some one who, impelled by an earnest love of nature, will devote himself to the exploration of the basin of the San Francisco River with the same patient energy that has been manifested by Mr. Bates in his researches during many years in the district of the Amazon. In considering, with reference to this group, the interesting ques- tion as to the probable amount of influence exercised by tropical lati- tudes on the size and the brilliancy of species, as contrasted with subtropical latitudes, our present very imperfect knowledge of the * In Chili, which ranges from 40° to 34°, a single species has been detected, Hypolampsis melanotus. t The isothermal line of 43° in Spain, however, is the same as that of 36° N in the United States. Viii INTRODUCTORY REMARKS. fauna of the Continent as a whole will not permit more than the adoption of general conclusions ; the knowledge, however, that we possess, scant as it is with regard to many vast districts, completely bears out the rule that has been established in other groups of insects, — that while in tropical and in subtropical countries equally, small and dull-coloured species are found, it is for the most part in the tropics, properly so called, that (over and above these) large and splendidly marked species are to be met with. The genus of this group that of all others is distinguishable for brilliancy of clothing and coloration is Oetogonotes ; the species of this genus have been discovered only in the tropical north of S. America. The same rule applies (so far as we are able to fix the distinct regions of the species) with regard to the genus Thrasygcem ; while, in Africa, the splendid PhysonycMs smaracjdina is found only in Senegambia and Old Cala- bar (both within the tropics). To this general rule, however, the genera before us supply two important exceptions : Loxoprosopus ceramboides, the largest species not only of the genus but of the whole group, has been found only on the southern limits of the tropics, and the handsome genus Mo- noplatus also is only to be met with in the same latitude, that of Bio Janeiro ; these two examples (one of which is the example of a single specific form) are distinct exceptions to what appears to ob- tain as a very general law. With regard to the geographical range of the species of the vast genus (Edionychis (the subject of the second part), it may be urged that, in their case also, there is no infe- riority of stature or coloration among the subtropical as contrasted with the tropical species. This may perhaps for the most part hold good ; but in several instances at least, I believe that it may be shown that this, however prima facie an apparent, is not a real exception ; and that it will be seen, when that portion of the group is specially considered, that some (and probably many) of the bril- liant species composing it, which certainly abound in subtropical latitudes, are merely local varieties of (if not almost identical with) species that are met with in tropical districts, — that is, that some species at least of the genus have, in their several local modifications, a range almost as extensive as the continent itself ; a fact that we should, d priori, be led to expect from the abundance numerically of INTRODUCTORY REMARKS. individuals of these species. Thus, there is a certain parallelism of contrast between this latter genus and the portion of the group now under consideration ; for while, on the one hand, we have an actual paucity of examples (combined with comparative paucity of species) and a limited geographical range to each species, — on the other hand, we have abundance of examples (combined with abundance of so- called species) which occupy a very extended geographical range ; that is, that there is in the latter case an all-pervading and power- ful influence in favour of increase, which in the former seems to be wholly or almost entirely wanting. What may be the conditions and what the limits of this influence, why it affects the one and not the other group, we cannot now discuss ; doubtless the question is as interesting as it is difficult : it is interesting because it is the investi- gation of a principle affecting all life ; and it is difficult because our present means of knowledge are so scanty, and because it is so easy to fruitlessly dogmatize, and so hard to examine and in patience wait. No travellers or collectors have given us any detailed information respecting the habits of these insects, either in their earlier stages or in their mature existence ; it is probable that they pass the larva and pupa stages under conditions closely similar to those of the same group in Europe. Perty says of them (Delectus Anim. Artie. 1830, p. xvii), " quoad mores, parum inter se differunt, pleraque plant-as frequentant (p. xviii) Halticm in Brasilia copiosissime totum per annum cequali numero adsunt ; magnitudine Europceas valde superant, moribus conveniunt. Plerwque in agmina congregantur, et copulationes hybridce scepissime observanturP Lacordaire, in his valuable work on Subpentamerous Coleoptera (vol. i. p. xl), describes the general form of the larva3 of this group as, " iii. Larves mineuses. Larves allongees, subcylindriqv.es, attenuees a leurs deux extremites, non mamelonees. Nymphes subissant leur me- tamorphose dans Vinterieur cles feuilles oil a vecu la larve, ou dans la terre. — Altica." In their perfect state, the insects of the group (as represented by the genus (Edionyckis) are most abundant throughout the whole of Brazil. The traveller sees them flying across his path, or sunning themselves upon some leaf or flower ; they may be taken readily by INTRODUCTORY REMARKS. a sweeping-net, or an umbrella inverted, over which the branches of shrubs are beaten : this, as far as my experience goes, is the most effective method of securing specimens. There is, however (when once they are under the inspection of the collector), a manifest dif- ference in the modes which they adopt to escape from danger. Some species seek for safety in flight, and use their wings as nimbly and aptly as a Longicorn or Cicindela ; these are generally the brightly coloured species, such as those of the genera Monoplatus and CEdio- nychis, and doubtless Octogonotes ; to these nature has given no pro- tection but flight. Others seek protection by adopting a very different habit — they simulate death, and for some moments may be rolled over and over in the net or umbrella, to all appearance a mere dead bud, or atom of clay ; they correspond, in their feigned lifelessness when captured, to the habits of Chlamys, Lamprosoma, and many genera of Curcidionidce : such are the habits of Omototus and Homo- typhus. In order that we may be able to examine the relationships and the different affinities of the members of this group inter se, it is neces- sary that we should first of all satisfy ourselves that its natural limits are clearly denned, and seek also to comprehend something of its position among, and connexion with, the other forms of the Phttophaga. "What are its affinities ? what are the forms that na- turally compose it ? and where ought they (with reference to others) to be placed ? It is the more necessary to inquire into this, because, at the first contemplation of the forms comprising the proposed group, the species are anything but apparently cognate the one to the other. Such is the diversity of character, and want of similarity in external appearance, that we shoidd be disposed, prima facie, to intersperse them among other groups of the Halticidce, or even, in some instances, to intercalate them among the Eumolpida?. It is perhaps, however, hardly necessary to enter at length into the consideration of the question as to whether we should adopt the views of Fabricius, who broke up and separated the Halticidai into other sections of Phtto- phaga (as Galeruca and Ohrysomela), thus refusing to attach any value whatever to their saltatorial power; or whether the views adopted by Latreille and Illiger, and (to a great degree) by Lacor- daire, are not the more sound, which, recognizing the saltatorial INTRODUCTORY REMARKS. xi power as of some (though not of the highest degree of) importance, group together the species possessing it, as comprehending of them- selves one distinct subsection of the Phytophaga. This, the general question, we need hardly here consider, inas- much as we have another and a more valuable character, which is common to all that portion of the Haltiddm that is the subject of this Catalogue, the globular and bladder-Wee inflation of the posti- cal claw. This, so far as we know, is a specialty affecting only this group of insects ; it is unique, and seems not only to have (it may be) a greater value, as the basis of arrangement, than the incras- sated posterior femora, but to possess sufficient importance to per- mit us, by means of it, to unite together forms of these saltatorial Halticidse that in external facies are not otherwise than dissimilar the one to the other. The thought at once suggests itself (if we have satisfied ourselves as to the soundness of this basis of arrangement), that if among these saltatorial Halticidse we can discover a character (this globular in- flation of the postical claw) which is sufficiently striking and perma- nent to bring together many different forms, included in the group, and which at the same time does not introduce any single species (from among the other sections of Phytophaga) that does not possess this saltatorial power, whether some other character may not be dis- covered among the remaining forms of Halticidae which is common to them, and to them alone ; and whether it does not, to some extent, supply an argument in favour of our seeking to unite together, as one subsection of the Phytophaga, all species, however dissimilar in form, that possess this saltatorial power. But to return to the more immediate subject before us : we believe that this globular inflation of the postical claw so far holds good as the basis of arrangement, that genera and species which possess it (although they may differ considerably inter se in general external form) are really, by means of it, more closely related to each other than they are to others which (with a greater appearance of resemblance) are deficient in this peculiar structure. When, however (having satisfied ourselves as to the questions, what are the natural limits of the group ?, what forms ought to be included, and what excluded ?), we begin to investigate seriatim the species from different countries XU INTRODUCTORY REMARKS. that thus compose it, and seek to discover among them natural affi- nities and a natural sequence of arrangement, we find ourselves involved in some difficulty. A little examination, however, teaches us (as we should expect would be the case) that we can find import- ant distinguishing characters in the length and dilatation of the antenna?, in the facies of the thorax, and especially in the form of the joints of the anterior tarsi and the form of the posterior tibia ; these, when based upon, and considered in conjunction with another character (which is of more value even than they are), the form of the palpi (especially the maxillary), afford, we believe, characters amply sufficient for the establishment of well-defined genera. In the con- sideration of the different forms included in this Catalogue, the only genus that has in its definition presented serious difficulties is the genus Hypolampsis ; it contains within it at least three slightly but distinctly different forms — that of the first species (H. melanotus), from Chili, that of the first section of the genus, and that of the second section. Inasmuch, however, as the species of these latter groups* are not, in general form, absolutely constant inter se, I have, after much careful study and microscopic comparison, thought it better to unite (for the present at least) all together under one single genus, leaving the task of suggesting subdivisions to future students who shall have the advantage of a larger amount of materials. It is probable that other genera, as Eupeges and Homammatus, will (when we know more of the insect life of the New World) also require subdivision. * Hypolampsis pilosa, 111., also represents another (North American) modifi- cation of form. Ordo COLEOPTERA. Sectio Phytophaga. Fam. GALERUCID.E. Subfam. Halticarum (femoribus posticis valde incrassatis) pars, con- tinens TXLigeri divisiones duas {Mag. fur Insektenkunde, 1807, Sechster Band, p. 82). "I. Familie, Physapodes. Unguis posticus apice sursuin globoso-in- flatus ; elytra temere punctata aut laevigata. " II. Famine, (Edipodes. Unguis posticus apice sursuin globoso-inflatus ; elytra punctato-striata." Eupodes, Latreille, BegneAmm. ed. 2. (1830) vol. v. p. 132 (English edi- tion, p. xix and p. 134). Chrysomelines, Dej. Cat. Col, ed. 3. (1837) pp. 407-410. Genus Octogonotes, Drap., usque ad (Ediongehis, Latr. Phytophages, Lacordaire,Monogr. desPhytophages,QSAS)\ ol. i. pp. li,lii. Corpus parvum, pleruiuque parallelo-oblongum, interdum etiaiu robustum aut globosum. Caput prominulum, aliquando porrectuni. Palpi breves, aut filiformes aut incrassati ; maxillaribus quadri- et labialibus tri-articulatis, ad basin saepius occultatis. Oculi rotuu- dati. Antennae 11-articulatae, art. 2° minuto, filiformes, aut ad apicem sive ad medium dilatatse. Thorax plerumque inclinatus, ad latera marginatus et depressus. Scutellum triangulare, mediocre vel minutum. Elytra oblonga aut oblongo-ovata, interdum etiam rotun - data aut gibbosa, plerumque laete colorata. Pedes validi, femoribus posticis valde incrassatis, tibiis rectis aut aliquando modice incurva- tis ; tarsis quadriarticulatis, art. ultimo ad apicem inflato, globoso ; unguiculis bifidis, saepius dente infra ad basin armatis. Habitant in regionibus tropicis et subtropicis, praesertim in America meridionali ; in foliis plantarum et arborum diversorum apricantes, et per vias saepenumero volitantes. Tribtts I. Palpi maxillares filiformes, articulo 3° hand dilatato, plus minus cylindrico, nunqumn globoso, rarius quadrato. Tribus II. Palpi maxillares ad apicem incrassati (articulo ultimo interdum minuto), art, 3° subgloboso aut transverso, nunquam elongato, rarius quadrato. 2 MONOPLATFS. TRIBUS I. Genus 1. MONOPLATUS*. (Front, figs. 1 & 2. Tab. I. figs. 1-4.) Dej. Cat. ed. 3. 1837, p. 407. Mandibtjl^: robusta*, ad marginem inferiorem dentatce. Palpi maxillabes subelongati ; labiales robusti. Antenna filiformes, art. I"10 et 2nd0 subdilatatis. Octtli exstantes, ghbosi. Caput leviter productum, antice subattenuatum, in $ transversum, latum, in c? constrictum. Thorax transversus, angidis anticis subdepressis, lateribusmarginatis, rectilinearibus, ad'basin transverse foveolatus, impxmctatus fere, et glaber. Elttba sat lata, subcylindrica, ante medium plus minusve oblique depressa, punctato-striata plerumque, vel punctata; scepe co- lorata. Pedes robusti; tarsi anteriores breves, dilatati ; femora posteriora in- crassata, oblique truncata ; tibice robustce, longitiidinaliter mar- ginatat, et apicem juxta dentatae. Mas habet antennas longiores, caput brevius, oculos globosos et prominentes, elytra parallela subattenuata, tarsosque ad basin di- latatos. Labrum transversely subrotundate. Mandibles robust, deflected at the apex into a sharp, acute, double point; at the inner margin (immediately below the apex) is a single well-defined tooth, formed by a double depression in the surface. Maxillary palpi (Front, figs. 1 m k 2 m) subelongate ; the second joint long, narrow, obliquely truncate ; the third short, ovate ; the apical joint longer than the second, and nearly as long as the third, subacute at its extremity. Labial palpi (Front, figs. 1 n & 2ri) : the first joint rounded at the apex ; the second broad and short ; the apical considerably narrower than the second, equal to it in length, and subacute. Antennae approximate, situated immediately below the inner mar- gin of the eyes, tolerably robust, filiform ; in the males equal in length to that of the elytra, in the females shorter by one-third than the elytra ; the first joint broad, gradually dilated, and reflected outwards ; the second short, ovate ; the third as long as the first, more attenuated than the second ; the fourth very slightly longer * fiovoe, solus ; nXarvs, latus. MONOPLATUS. •' than, and similar in form to, the third ; the rest somewhat shorter, subequal, oblong, the last (the terminal joint) being more elongate and subacute. Eyes round, globular, prominent, not extending in either sex, laterally, so far as the anterior angles of the thorax ; in the males situated at some little distance in front of, in the females immediately in front of, the base of the head. Head (Front, fig. 1 «) slightly produced (not so distinctly as in Ehinotmetus) and subattenuate in front ; in the males narrower and rather more elongate than in the females (in which it is broad and transverse). Thorax broader than the head, transverse, rectangular ; the ante- rior angles depressed, the sides rectilinear and marginate ; at the base (apparent in every species) is a narrow transverse regular groove (running exactly parallel to the line of the margin), which terminates abruptly (before it reaches the posterior angles) by being deflected at right angles towards the basal line ; the surface generally almost impunctate and glabrous. Scutellum triangular, impunctate. Elytra broader than the thorax, parallel, subcylindrical ; in the females broader and much more robust than in the males ; more or less transversely depressed from the antemedial suture towards the shoulders (by which an appearance of prominence is given to the part near the scutellum), punctate-striate or punctate, more or less di- stinctly ; impubescent and brightly coloured. Legs, in the males, longer and more robust than in the females. The anterior femora robust, subdilated medially, impubescent. The tibicB straight, at the immediate apex incurved downwards, slightly thickened towards the base, truncate at their termination. The tarsi (Front, fig. 2 d) short ; the basal joint broad and produced, broader than the apex of the tibise, ovate at the base and abruptly truncate at the apex ; the second is minute, triangular and subelongate, in length not more than one-third of the basal joint, and in greatest breadth not one-half the breadth of the basal joint ; the third joint is distinctly and broadly bilobed, in length not equal to the second joint, but transversely broader; the terminal joint is elongate, slender, slightly incurved, and gradually increasing in thickness towards its apex. The terminal claw (Front, fig. 2 e) is bifid and minute ; the three basal joints are completely and densely fringed with thick pubescence. The posterior femora (Tab. I. fig. 1/) are incrassated, extending in the males nearly to the apex of the abdomen ; at the apex (at the insertion of the tibise) they are ob- liquely truncate. The tibia? (Tab. I. fig. 3 g) are robust, straight, b2 MONOPLATTJS. in length nearly equal to that of the femora ; at the immediate base incurved downwards, and gradually more robust towards the apex : when seen obliquely, the surface throughout posteriorly is flattened, and raised on either side into two distinct marginations ; on the outer margin near the apex are several spur-like prominences, giving the ap- pearance of a coarsely-toothed saw ; these projections (seen best when viewed obliquely from behind) are six or seven in number, becoming more distinct and frequent as they approach the base : immediately behind the last (the apical) in the margination, between this and the terminal incurved claw, is a short but abrupt ridge, which is armed with several closely disposed minute teeth ; these are not only much more minute, but also more prominent, and acute, and closely arranged, than the projections in the margination. It is remarkable that this serrated emargination is only apparent in the females; in the males it is entirely wanting, or else represented merely by a little irregularity of outline. The insertion of the tarsus is at the apex of the tibia ; immediately below the insertion are two incurved teeth, situated at the extreme apex of each of the lateral margins of the tibia : the tarsus (Tab. I. fig. 2h) is short ; the basal joint is dilated, its breadth being greater even than that of the apex of the tibia, slightly carinated medially in its upper surface, and flat (in the females this joint is much narrower and more contracted, though of the same length as in the males) ; the second joint is elongate and narrower than the first, attenuated at the base and slightly tapering towards the apex ; in both sexes this joint is of similar form ; the third joint is shorter and somewhat broader, almost bilobed, and covered with a very fine and thick pubescence ; the terminal joint (which is not so elongate as that of the anterior tarsi) is inflated at its extremity into a globular projection, which entirely covers, from above, the apical claw ; the apical claw is minute, bifid, and armed at its inner surface with an almost obsolete tooth. The sexual distinctions of this genus are striking and very in- teresting. I premise, however, that they are sexual (and not spe- cific or generic) from the fact that, although during our collecting in Brazil we never succeeded in taking them in copula, both forms were taken together under the same circumstances, at the same times, and at the same different localities in the Organ Mountains. The antennae in the males are longer, the head slightly smaller ; the eyes are distinctly more prominent and globose ; the body is much more narrow, cylindrical, and less robust ; the legs are comparatively longer and more robust, and the basal joint of the tibia? is very broadly dilated : these are sexual distinctions which we should ex- MONOPLATUS. 5 peet to find in the male ; but there is this peculiar characteristic in the female, that its posterior tibiae are armed with series of tooth- like prominences, which are not only not so clearly developed, but are hardly traceable at all in the males. To a greater or less extent in most of the Ralticce proper and Lon- gitarsi, the enlargement of the basal joint of the tarsus (Front, fig. 2a) holds good as a sexual characteristic. Sometimes this is only faintly expressed; thus in the European Longitarsi it may be traced di- stinctly, although comparatively obsolete. Mr. Wollaston finds the same sexual contrast in a Canarian species (Longitarsus Kleiniiperda , Woll.). In examples which I have received from him, the antical tibia? (as well as the anterior tarsi) are dilated in the males ; but the basal joint of the tarsi, although much more prominent than in Eu- ropean species, is considerably less developed than in the group before us — Monoplatus. Thus we find that in this instance at least, the sexual distinctions which obtain in a part of the same subfamily of insects, and which are apparent in the temperate zones, become more pronounced in the subtropical, and attain their maximum of difference in the representative group which is found in the regions nearer to the equator. 1. Monoplatus nigripes. (Tab. I. fig. 1.) M. ( 2 ) oblongo-ovalis, subcylindricus, glaber, niger ; capite brevi, depresso, antice inter ocidos subtiliter foveolato, impunctato, jiavo-ferrugineo ; thorace quadrato, antice emarginato, ad basin transverse canaliculato, impunctato, jiavo, nitido ; elytris robustis, punctato-striatis, ad apicem subattenuatis, nigris, nitidis; antennis filiformibus, nigro-fuscis ; pedibus nigris, femoribus anticis fusco suffusis. 2 Long. corp. 3 lin., lat. Ik lin. Oblong-ovate, robust, subcylindrieal, impubescent, shining, black. Head short, depressed, not produced in front ; the eyes are large, prominent, and black, situated at the base of the head, the distance between them being not greater than the diameter of either ; above the base of the antennae is an irregular medial depression ; the sur- face is impunctate, shining, and rufo -ferruginous. Thorax broader than the head, transverse, and rectangular ; the anterior margin is distinctly and circularly emarginate ; the anterior angles are sub- acute and depressed ; the sides marginate, especially anteriorly ; the basal angles are slightly truncate : parallel to the margin of the base is a well-defined thread-like fovea, which does not extend to the sides, but is abruptly and at right angles deflected to the base ; this fovea is in its course slightly subsinuate ; the surface is im- MONOPLATUS. punctate, rafo -ferruginous, and glabrous. Scutellwn triangular, im- punctate, black. Elytra broader than the thorax, subcylindrical, and subattenuated towards the apex ; an antemedial transverse ob- solete depression gives prominence to the surface near the scutellary angles ; punctate- striate, black, shining. Antennce filiform, fuscous. Legs black, the anterior femora being at their base suffused with rufous. Examples of the females of the species were taken by my friend Mr. Gray and myself at Petropolis (Organ Mountains, Province of Rio Janeiro), February 1859. A slight tendency to variation may be traced among them in the colour of the thorax. 2. Monoplatus Presidencies. M. ( $) oblongo-ovalis, subcylindricus, glaber, niger ; capite brevi, impunctato, rufo, inter oculos (magnos, nigros) transverse sub- tiliter foveolato ; thorace transverso, antice emarginato, ad latera rnarginato, ad basin transverse canalkulato, impunctato, rufo; elytris robustis, punctato-st riatis, ad apicem subattmuatis, nigris, nitidis ; antennis filiformibus, fuscis ; pedibus rufis, tarsis tibiis- que anterioribus fusco-nigris. 2 Long. corp. 3| lin., lat. 1| lin. Oblong-ovate, robust, subcylindrical, impubescent, black, gla- brous. Head short, transverse, not produced in front ; the eyes are large, occupying a considerable portion of the head, prominent, and black; between the eyes is a minute transverse fovea; the surface is impunctate, glabrous, rufous. Thorax broader than the head, trans- verse, rectangular; the anterior margin is medially emarginate (but not so deeply as in M. nigripes) ; the anterior angles are subacute, slightly prominent and depressed ; the sides marginate : at the base is a transverse fovea (which runs parallel to the line of the base), but which is deflected (before it reaches the lateral margins) at right angles to the basal line ; this fovea is not, as in nigripes, subsinuate, but accurately parallel to the fine of the base : the surface is im- punctate, shining, rufous. Scutellum triangular (somewhat longer and more distinct than in nigripes), glabrous, black. Elytra broader than the thorax, robust, subcylindrical, slightly attenuate at the apex, punctate-striate ; near the scute llary angles the surface is somewhat gibbous (the striae and punctures being more obsolete) ; at the fifth and sixth striae near the shoulders is a slight longitudinal depression. Antenna; filiform, fuscous, the three basal joints being rufous. Legs rufous, the anterior tibiae and tarsi being fuscous. The only example of this species (a female) was taken at Presi- M0X0PLATTJS. dcncia (the English boarding-house kept by the late Mr. Land, Organ Mountains), during the visit of Mr. Gray and myself in February 1857. The species differs from nigripes and distinguendus (to both of which it is closely allied) by the coloration of its head and legs : from nigripes it is structurally separated by its transverse and linear fovea between the eyes, by its rectilinear (and not sub- sinuate) transverse canaliculation at the base of the thorax, and by the less deep emargination of the anterior margin of the thorax ; from distinguendus it differs by its concolorous elytra, and by the absence of any spot on the crown of the head. The three species, although unquestionably closely allied, appear to me to have ample marks of difference which separate them each from the others. 3. Monoplatus distinguendus. (Tab. I. fig. 2.) M. oblongus, mbparallelus, niger, nitidus ; capite brevi, impunctato, ferrugineo; thorace transverso, rectangulari, antice subemargi- nato, angulls anterioribus prominulis depresses, apud basin fovea lineari transversa omato, impunctato, flavo ; elytris par- aUelis, subdepressis, punctato-striatis, ad basin paulum elevatis, nigris, ad humeros flavo-marginatis ; antennisflliformibus,art. 1-4 ferrugineis, reliquis nigris ; pedibus flavis, tarsis tibiisque apicalibus nigris. 3 Long. corp. 3 lin., lat. 1^ lin. Oblong, subparallel, subdepressed, black, shining. Head short, transverse, hardly produced ; eyes large, prominent, black, occupying a considerable portion of the head ; between the eyes is an obsolete longitudinal impression ; ferruginous. Thorax broader than the head, transverse, in front slightly emarginate (not so distinctly as in the former species) ; the anterior angles are slightly prominent and de- pressed ; the sides marginate and parallel ; at the base is a narrow and well-defined channel, terminated (by being deflected at right angles to the line of the base) before it reaches the lateral margi- nation; the surface impunctate and flavous. Scutellum tolerably large, triangular, impunctate, black. Elytra somewhat broader than the thorax, parallel, slightly depressed, rounded at the apex ; punc- tate-striate, the punctures being distinct and frequent, the striae shallow ; near the scutellary angles the surface is impunctate, and slightly raised, in a subcircular form : black, with the anterior {ante- medial) margins flavous. Antenna tolerably long, filiform, fuscous, with the four basal joints ferruginous. Legs flavous throughout, the tarsi and the apical part of the tibiae being fuscous-black. Several males of this species (I have never seen the female) were taken by Mr. Gray and myself at Petropolis in February 1857. 8 MONOPLATUS. Although of the preceding species (M. nigripes and Presklencice) I have only been able to examine females, and of this species only males, I have, after much examination, no doubt that they are abundantly distinct the one from the other. M. distinguendus may be known (irrespective of its different coloration, especially tliefiavous margination of the elytra) by its manifestly less deep striation on the elytra ; sometimes this is almost imperceptible, except under a high power. There is also abundant distinguishing character in the mark- ings on the head. 4. Monoplatus Grayii. (Front, fig. 1.) M. oblongo-ovalis, mbdepressus, parallelus, niger, nitidus ; capite brevi, subdepresso, haud elongato, inter oculos longitudinaliter foveolato, fusco-bimaculato ad basin, inter ocidos ; thorace trans- verso, rectangulari, angidis anticis subacuiis prominulis, ad latera marginato, ad basin fovea transversa hand latera attingit, im- punctato, fusco; elytris subparallelis, punctato-striatis, sutura, marginibus, fasciisque duabus transversis (interdum etiam ely- trorum basi)Jlavis ; antennispiceis, ad basin Jlav'ts; pedibusjtavis. ($ Long. corp. 3 lin., lat. 1 lin. Oblong-oval, subdepressed, parallel, black, shining. Head very small, not elongated; eyes large, distant, prominent, reaching laterally nearly as far as the apical angle of the thorax ; between the eyes, above the insertion of the antennas, is a small obsolete longitudinal impression ; the surface impunctate ; near the inner and posterior margin of the eyes are two subcircular obsolete fuscous spots. Thorax transverse, rectangular, in front very slightly emarginate ; the an- terior angles are subacute and depressed ; the sides marginate, most distinctly anteriorly ; at the base is a transverse linear fovea, nearly parallel to the margin, which does not extend to the lateral margi- nation, but is abruptly deflected to the base ; surface impunctate, fiavous. Scutellum triangular, impunctate, shining. Elytra parallel, somewhat depressed, punctate-striate, black ; the lateral margination (which is distinct) and the suture (except as either approaches the base) are fiavous : two transverse regularly formed fasciae of the same colour are situated, the one medially (which is slightly deflected towards the base as it approaches the margination), the other nearer to the base, at the distance from the former of its own breadth : in some examples the apex also is fiavous. Antennce filiform, as long as the elytra, the joints being severally of the form of those of allied species ; first to fourth fiavous, the rest fuscous or piccous. The above description is from a male. Although several examples MOXOPLATTJS. of the species were captured by Mr. Gray and myself in the imme- diate neighbourhood of Petropolis (Organ Mountains, Rio Janeiro), none of them were females. I name this handsome species after my friend and fellow-traveller John Gray, Esq., to whom, for many personal kindnesses, I am happy to acknowledge my obligations. 5. Monoplatus Miersii. M. oblongo-ovalis, robust us, rufus,nitidus ; capite parvo, depresso, ocidis magnis, haud exstantibus, ad basin capitis attingentibus, impunctato, rufo-fusco ; ihorace transverso, marginato, angulis anterioribus acutis, ad basin transverse subdepresso et foveolato, fusco-rufo (inter foveam basinque nigro) ; elytris subdepressis, punctato-striatis, nitidis, fasciis duabas nigris (ad suturam in- terruptis), hac ad humeros lata, ad marginem attenuata, ilia ad medium parva, inconstanti (aliquando maculas duas tantum efficient!); antennis fuscis, ad, basin rufis ; pedibus rufis, tarsis tibiisque anterio-ribus nigris. 2 Long. corp. 3 lin., lat. 1| lin. Oblong-oval, robust, rufous, shining. Head transverse, very slightly produced, impunctate, rufo-fuscous ; eyes large, prominent, at some distance from each other, and almost touching posteriorly the thoracic margin. Thorax transverse, rectangular in front, slightly emargi- nate ; the anterior angles slightly produced and curved oidwards in the shape of a tooth ; the sides distinctly marginate ; at the base is a regular transverse groove, parallel to the margin, which is deflected abruptly towards the base of the elytra before it reaches the humeral angle ; the base of the thorax (between this groove and the margin) is very dark fuscous or even black. Scutellum triangular, impunctate, rufous. Elytra broader than the thorax, robust, subcylindrical, ovate, finely punctate-striate, rufous : two irregular black transverse fasciae are interrupted at the suture, and do not reach the margin ; the anterior fascia reaches at its upper margin nearly to the base of the scutellum, and thence obliquely decreases in breadth towards the margin ; it is separated from the suture by the breadth of a single stria, and from the margin by the distance of three striae ; the posterior fascia is hardly so broad as the anterior, and in one example takes the form of two oblong irregular postmedial spots. Antenna! filiform, fuscous, with the basal joints rufous. Legs rufous, with the anterior tibiae and tarsi, and also the outer edge of the posterior tibiae darkly-fuscous. Brazil. In the collections of Messrs. Miers and Murray. In general appearance this insect approaches to M. Grayii ; it 10 MONOPLATUS. may be readily separated by its rufous colour and completely dif- ferent arrangement of the transverse bands. Both the examples which have come before me of this species are females. 6. Monoplatus apicatus. M. oblongo-ovalis, parallelus, subdepressus, testaceo-vufus, niildus ; capite parvo, ocidis eccstantibus, magnis ; thorace transverso, rectangidari, marginato, ad basin transverse foveolato ; elytris parallelis,punctato-striatis,ad has!,/ nigris; ami. nnisfiliformibus, fuscis, ad basin flaws ; pedibus flavis, fusco adumbratis. cf Long. corp. 2| lin., lat. 1} lin. $ Long. corp. 3^ lin., lat. 1| lin. Oblong-ovate, depressed, parallel, rufo-testaceous, shining. Head transverse, not produced; eyes very large. prominent, but not extending laterally as far as the anterior angles of the thorax ; between the eyes and above the insertion of the antenna) is a small, obsolete, longitudinal depression ; surface impunctate, black, shining ; two circular dark-fus- cous ocelli-like markings are faintly apparent at the posterior and inner margin of the eyes. Thorax transverse, rectangular; the anterior angles depressed, but slightly prominent ; the sides marginate; pos- terior angles distinct ; parallel to the base is a transverse narrow fovea which terminates abruptly before it reaches the margination ; surface impunctate, rufo-testaceous, slightly suffused (in the exam- ples before me) with fuscous ; shining. ScuteUum distinct, trian- gular, impunctate, fuscous. Elytra subcylindrical, slightly depressed, rounded at the apex, punctate -striate, with the humeral and scutellar angles broadly gibbous; rufo-testaceous (slightly paler than the thorax), with the apex black (this colouring at the apex occupies about one-fifth of the whole surface of the elytra, and is defined by a regular transverse margin, the line of which inclines in the direc- tion of the base, as it approaches the margination). Antennas filiform, of the length of the elytra ; the first joint long, and incrassated at the apex ; the second short, ovate ; the third and fourth nearly equal ; the first to fourth (with the exception of the upper part of the first and second) testaceous, the rest fuscous. Legs rufo-testaceous through- out, the femora being more or less suffused with fuscous. The above description is taken from a male. The females are more robust, less parallel ; the legs, especially the posterior pair, somewhat shorter in proportion to the body ; the head larger, but the eyes smaller and less prominent, and the antenna; shorter. Specimens of both sexes were captured by Mr. Gray and myself in the immediate neighbourhood of Petropolis (Organ Mountains, Rio Janeiro), February 1857. aiONOPLATTJS. 1 1 7. Monoplatus bimaculatus. (Tab. I. fig. 3.) M. oblongo-ovalis, robustus, impubescens, cervinus, nitidus ; capite brevi, subpunctulato, ad basin leviter nigro-vittato, oculis promi- nulis, liaud exstantibus ; thorace transverso, rectangidari, angulis anterioribus depressis, subacutis, marginato, ad basin transverse foveolato, glabro, nigro-irrorato ; elytris robusUs,punctato-striatis, ad medium maculis duabus circularibus nigris ; antennis jili- formibus, elytris brevioribw, art. secundo et tertio flavis, ceteris fuscis ; pedibus nigro- fuscis, femoribus ad basin Jlavis. 2 Long. corp. 4 lin., lat. 1| lin. Oblong-oval (the female), robust and subcylindrical, of a fawn- colour throughout, impubescent, shining. Bead short, transverse, impunctate (by means of a high power of the microscope fine punc- tures are visible) ; above the base of the antennae, and between the eyes, is an obsolete but distinctly impressed transverse fovea ; obliquely subsinuate, or medially angulated ; at the base is a narrow transverse band or collar of black, extending along the margin from eye to eye: eyes tolerably large, distant ; their outer margin does not reach, laterally, the line of the anterior angle of the thorax. Thorax transverse, rect- angular, anteriorly sw&emarginate ; the anterior angles are subacute and depressed; the sides marginate and slightly arcuate, and the basal angles distinct, but closely contiguous to the elytra ; at the base is a deep and well-defined transverse fovea, not extending to the sides, but abruptly deflected before it reaches the humeral angle, and terminating in the line of the base ; surface somewhat globose, finely punctate, especially at the base, irrorated irregularly through- out with black. Scutellum small, triangular, impunctate, shining. Elytra robust, much broader than the thorax, subcylindrical ; the surface near the scutellar angles turgescent ; punctate- striate, with two circular black spots slightly in front of the middle, and extending laterally from the second to the sixth stria. Antennae filiform, not so long as the elytra ; the first joint long, dilated, and inflected out- wards at the base, black, or dark fuscous ; second short, ovate, flavous ; the third longer than the first, fine, and flavous ; the rest dark fuscous. Legs dark fuscous throughout, the base of the femora being flavous. The above description is taken from a female. A single specimen of this fine species was captured by Mr. Gray in February 1857 at Petropolis (Organ Mountains, Rio Janeiro). 8. Monoplatus croceus. B.M. M. oblongo-ovalis, croceus, nitidus; capite brevi, minuto, fovea inter oculos obsoleta longitudinali, impunctato, glabro ; oculis magnis, exstantibus ; thorace transverso, rectangulari, angulis anticis pro- 12 MONOPLAl mimdis, marginato, ad basin distincte foveolato ; elytris medio- cribus, parallelis, subdepressis, ad basin apud humeros, etiam prope scutellum distincte subglobosis ; anU nnisjiliformibu8,fuscis, ad basin rujis vel rufo-jtavis j pedibus flavte ant croceis, tarsis tibiisque anterioribus nigris. c? Long. corp. 2\ lin., lat. 1^ lin. 2 Long. corp. 3f-3| lin., lat. 1£-1£ lin. Oblong-ovate, slightly depressed, subparallel, impnbescent, pale yellow, sliining. Head short, small, transverse, not produced in front ; eyes large, globular, and prominent (not extending laterally so far as the humeral angle of the thorax) ; between the eves, and above the insertion of the antenna?, is an obscure longitudinal de- pression ; surface impunctate, testaceous, somewhat clouded with fus- cous, glabrous. Thorax transverse, rectangular, in front distinctly emarginate ; the anterior angles depressed, but subacute ; the sides marginate ; at the base is a narrow transverse thread-like fovea, which is deflected abruptly into the margin of the base before it reaches the humeral angles ; surface impunctate, of the same colour as the head, shining. Scutellum triangular, impunctate, flavous. Elytra parallel, subcylindrical, the sides distinctly marginate; punc- tate-striate ; the surface near the Bcutellary angles slightly gibbous, croceous (in different examples the shade of yellow varies; in some it has the depth of eolovu' of the yellow band of Trichius fasciatus, while in others it is almost pale flavous). Ant, nna filiform, of the length of the elytra ; the first joint large, inflected outwards and dilated at the base ; the rest as in the adjoining species ; the first to the fourth rufo-ferruginous, the rest fuscous. Legs flavous or cro- ceous, with the tarsi and (more or less) the anterior tibia? black. Var. A. Head and thorax rufous; elytra flavous, irrorated (espe- cially towards the apex) with black; antenna rufous, with the fifth to the eleventh joints fuscous ; legs rufous, the tarsi and anterior tibia? being black. The above description of the insect was taken from a male ; that of the variety from a female. The different sexes of this species have the same characteristics that obtain among its congeners. The males are smaller, less robust, more depressed ; the head is smaller, while the eyes are larger and more promim nt ; the legs have slightly, in reality (as well as when contrasted with the different size of the bodies), a longer development; and the antennos arc very apparently more produced. This species is evidently subject to great variation in the shades of its colouring ; in the examples before me, no two specimens abso- lutely agree in every point. It is at oner separated ir om jucundus, MOXOPLATTTS. 13 to which alone it approaches in colouring, by the striation on the elytra (which is entirely obsolete in jucundus) and by the puncturing of the striae, which is distinct, broad, and deep. Taken by Mr. Gray and myself, abundantly, in the neighbourhood of Petropolis (Organ Mountains, Rio Janeiro), February 1857. A single specimen has also been found by Mr. Squire in the neigh- bourhood of Rio Janeiro. 9. Monoplatus jucundus. M. oblongo-ovatus, latus, subdepressus, impubescens, rufus ; capite brevi, inter oculos longitudmaliter depresso, impunctato ; thorace transverso, ad basin foveolato, impunctato ; elytris latis, leviter striato-punctatis ; antt nnis filiformibvs, fuscis, ad basin ferru- gineis ; pedibus ferrugineis, tibiis tarsisque anterioribus, tarsisque posticis nigris. 2 Long. corp. 3 lin., lat. If lin. Oblong-ovate, broad, depressed, impubescent, of a bright rufous colour throughout. Head short, depressed, not produced in front ; eyes large, situated at the base of the head, not extending laterally as far as the anterior angle of the thorax ; between the eyes and above the insertion of the antennae is a distinct longitudinal de- pression ; the surface impunctate. Thorax transverse, rcctangvdar, in front obsoletely emarginate ; the anterior angles very much de- pressed, subacute, produced laterally beyond the line of margination ; the sides marginate, especially towards the apical angles, subsinuate ; at the base a narrow transverse fovea extends parallel to the margin and terminates on either side in an abrupt inflection towards the base ; the surface impunctate. Scutellum large, triangular, impunc- tate. Elytra broad (much broader than the thorax), robust, and depressed, with rows of very fine punctures arranged as striae ; the surface near the scutellary angles is somewhat raised, and the striae- like punctures become almost obsolete ; the sides distinctly margi- nate. Antennas shorter than the elytra, filiform ; the joints arranged as in the allied species, the first to the third ferruginous, the rest fuscous. Legs ferruginous, with the anterior tibiae, tarsi, and the posterior tarsi black. Captured by Mr. Miers in the neighbourhood of Rio Janeiro. In the collection of Mr. Miers and also of the Rev. H. Clark. M. jucundus not only differs in its colour (being much more brightly and uniformly rufous) from croceus, but also in the punc- tuation of its elytra ; there is, in this species, a total absence of any appearance of striae, and the punctures themselves are very much more minute. 14 MONOPLATXJS. 10. Monoplatus sexsignatus. (Tab. I. fig. 4.) M. ohlongo-ovatus, subparallelus, impubescens, pdlllde flavus ; capite transverso, impunctato, ad apicem fulvo, ad basin nigro ; thorace transverso, rectangulari, ad latera marginato, ad basin transverse lineato, impunctato, glabro, flavo-ferrugineo ; elytris parallelis, punctato-striatis, flavis, ad basin lineis duabus longitudinalibus, ad apicem tertia subrectangidari , nigris ; antennis jiliformibus, fuscis, ad basin flavis ; pedibus flavis. Long. corp. 3 lin., lat. 1^ lin. Oblong-ovate, subparallel, impubescent, pale flavous. Head trans- verse, subprochiced ; eyes large, prominent, situated at the base of the head; surface impimctate, shining at the apex and fulvous, above black. Thorax transverse, broader than the head, rectangu- lar ; the anterior angles distinctly defined and subdepressed ; the sides marginate ; at the base, and parallel to the basal line, is a well- defined thread-like fovea, which terminates abruptly before it reaches the lateral margins, being deflected at right angles to the basal line ; the surface impunctate and glabrous ; the colour flavo -ferruginous. ScuteUum triangular, flavous, suffused in the middle with fuscous. Elytra broad, robust, parallel, distinctly punctate-striate ; impimc- tate and glabrous between the striae ; the colour pale flavous : at the base, between the third and fifth stria?, is a longitudinal marking, which extends from the shoulders one-quarter of the whole length of the elytra; at the shoulders, at the eighth stria (immediately above the outer margination), is a second linear marking, extending longitudinally nearly one-half of the whole length of the elytra ; at the apex is a third marking, between the fourth and the seventh striae, subrectangular, irregular in outline, situated at about the same distance from the extreme apex as it is from the suture, approaching more nearly to (though not reaching) the margination ; these mai'k- ings are black, slightly suffused at their margins with rufous. An- tennae fine, filiform, fuscous; the basal joints flavous. Legs flavous throughout. Brazil. In the collection of M. Chevrolat. 11. Monoplatus quatuor-notatus. (Front, fig. 2.) M. oblongo-ovatus,parallelus,subciiV)ndricus,punctato-striatus, pal- lida testaceus, glaber ; capite oblique foveolato inter oculos, impunc- tato, nigro, nitido ; thorace transverso, ad basin transverse foveo- lato, rufo-flavo, impunctato, nitido ; elytris parallelis, p%mctato- striatis, pjallide testaceis, maculis duabus ad humeros, alterisque versus apicem nigris ; antennis Jiliformibus, fuscis, ad basin flavis ; pedibus flavis. $ Long. corp. 3 lin., lat. 1 lin. MONOPLATtTS. 15 Oblong-ovate, parallel, subcylindrical, punctate-striate, of a pale testaceous colour. Head transverse, slightly produced ; between the eyes {immediately adjoining the base of the antenna?) is a minute obliquely angulated fovea, in the form of the letter V; between these two depressions is an obsolete elongated puncture (medial and longitudinal) ; the eyes are large, prominent, and globose, situated at the base of the head, and extending laterally nearly as far as the anterior angles of the thorax ; surface impunctate, black, glabrous ; near the posterior and inner margins of the eyes are two obscure fuscous spots. Thorax transverse, rectangular, hardly emarginate in front; the anterior angles are subacute and depressed; the sides marginate; at the base is a narrow and well-defined transverse groove, extending parallel to the line of the base, which terminates abruptly (before it reaches the sides) by being inflected at right angles to the posterior margin ; the surface is impunctate throughout and rufo-flavous. Scutellum triangular, impunctate, flavous. Elytra broader than the thorax, parallel, subdepressed, slightly acuminated at the apex, punctate-striate (the striae being almost obsolete, and the punctures distinct and evenly distributed throughout) ; an ob- solete antemedial depression (apparent when viewed laterally) gives a prominence to the surface near the base : two transverse black fasciae (the one at the base, the other near the apex) are interrupted at the suture, and thus form four black spots ; those at the base are distant from the suture by the breadth of rather more than a single stria ; they extend towards the apex one -sixth of the whole length of the elytra (or two-fifths of a line), their posterior margin being subsinuate in outline ; at the sides they reach, but do not colour, the line of margination : the apical markings are separated by a single stria from the suture, and immediately approach, but do not reach, the apex ; in form these are subcircular. Antenna long, filiform ; the joints one to four flavous, five to eleven fuscous. Legs flavous throughout. From the neighbourhood of Petropolis (Organ Mountains), Feb. 1847 ; the only example taken by us being a male. 12. Monoplatus semichalybeus. M. oblongo-ovatus, parallelus, punctato-striatus, ferrugineo-rufus, glaber ; capite brevi, inter oculos transverse foveolato, impunctato ; thorace transverso, ad basin subconstricto et transverse foveolato, ad latera marginato, impunctato ; elytris parallelis, punctato- striatis, ad apicem dimidio nigro-cyaneis ; antennis filiformibus, nigro-fuscis, art. 1-3 rufo-flavis ; pedibus rufo-Jiavis. $ Long. corp. 2|—2f lin., lat. 1 lin. 1Q MONOPLATUS. Oblong-ovate, subparallel, subde pressed, minutely punctate-striate, glabrous, ferrugineo-rufous. Head short, depressed, very slightly produced ; above the labrum is a transverse linear depression; im- mediately above the base of the antenna; is a transverse depression which gives a prominence to two obsolete oblique elevations between the eyes, forming together (broadly, and at an obtuse angle) the character of the letter V ; eyes large, globose, prominent, situated at the base of the head, extending laterally as far as the anterior angles of the thorax ; the surface at the base of the head impunctate and glabrous. Thorax transverse, rectangular, slightly constricted at the base, hardly emarginate in the front ; the anterior angles are de- pressed and subacute, the sides marginate ; parallel to the basal line is a well-defined transverse fovea, which terminates abruptly before it reaches the sides by being deflected into the Hue of the base ; the surface is impunctate, ferrugineo-rufous, clouded sparingly and minutely with fuscous. Scutellum triangular, impunctate, rufous. Elytra broader than the thorax, robust, subparallel, very faintly punctate-striate (the striae being almost obsolete, and the punc- tures frequent and very minute) : from the humeral angles extend two longitudinal carinations parallel to the margination, one between the eighth and ninth, the other at the eleventh stria ; these carina- tions become obsolete as they approach the apex ; an antemedial depression extends transversely as far as the first carination, which (when viewed laterally) gives an appearance of prominence to the surface near the scutellum : the antemedial elytra are in colour ferrugineo-rufous, clouded minutely and sparingly with fuscous ; the apical portion of the surface is dark cyaneous ; the line of demarca- tion being somewhat antemedially transverse, and falling away ob- liquely towards the apex as it approaches the line of margination. Antennas long, filiform, of a dark fuscous colour, the three basal joints being rufous. Legs flavo-rufous throughout. In one of the examples of this species, the azure-blue of the apical half of the elytra is represented by black, the anterior tibia; and tarsi also being black. This species, and those immediately allied to it, approach in co- louring to M. apieatus. Of the latter, the apex only (that is, hardly one line of the 2\ lines — the length of the elytra) is black : in M. semiclialybeus, more than half of the elytra is deep azure or black (that is, 1\ line of 21— the length of the elytra). This distinction obtains so exactly and so uniformly in the different examples of either modification of colouring (of which I have both sexes), that of itself (without any reference to well-defined though minute structural MONOPLATUS. 17 differences) it is almost sufficient to render it impossible that one should be constituted merely a variety of the other. 13. Monoplatus semiviolaceus. M. oblongo-ovatus, subparallelus, impubescens, glaber, rufo-testa- ceus ; capite oblique foveolato, ad basin impunctato, antice granu- lato ; thorace transverso, marginato, ad basin transverse foveolato, impunctato ; elytris subtiliter striato-pvnctatis, ad apicem fusco- nigris, ad basin rufo-testaceis ; antennis Jiliformibus, jiavis ; pedibusjiavis. <3 Long. corp. 2\ lin., lat. 11 lin. Oblong-ovate, subparallel, subrobust, impubescent, glabrous, rufo- testaceous. Head short, transverse, not produced ; labrum broad ; eyes large, prominent, situated at the base of the head : between the eyes an indistinct but well-defined semicircular fovea extends on either side obliquely and upwards to their inner margins (in semichalybeus this fovea is more angulated, and its direction transverse) : the sur- face in front coarsely granulated, at the base impunctate, glabrous. Thorax transverse, broader than the head, the anterior angles de- pressed, the sides marginate : at the base a transverse and well- defined fovea runs parallel to the line of the base, but is abruptly terminated before it reaches the lateral margins by being deflected at right angles towards the basal line ; this transverse fovea is at a greater distance from the basal line than in semichalybeus : the sur- face impunctate, glabrous. Elytra broader than the thorax, sub- parallel, glabrous : under a high power faint punctures may be discerned, arranged in the form of stria? ; these punctures are much more obsolete than in semichalybeus : the apical half of the surface is bright fuscous-black, the line of boundary in each elytron being in a subcircular form (that is, receding towards the apex as it approaches the suture). Antennae filiform, flavous. Legs flavous throughout. Cayenne. In the collection of M. Chevrolat. The above description (pointing out the angulated transverse fovea in the head, and also punctures on the elytra almost obsolete) suf- ficiently distinguishes this species from semichalybeus. 14. Monoplatus nigricans. M. oblongo-ovatus, subparallelus, subdepressus, impubescens, flavo- rufus ; capite brevi, inter oculos minute transverse foveolato, im- punctato ; thorace transverso, impunctato, ad basin foveolato ; 18 MONOPLATTJS. elytris subtilissime striato-punctatis, fusco suffusis ; antennis fili- f omnibus, rufis, ad apicem fusco-rujis ; pedibus flavo-rujis. (S Long. corp. 3 lin., lat. 1\ lin. Oblong-ovate, subparallel, subdepressed, impubescent, glabrous, flavo-rufous, suffused with fuscous. Head short, transverse, hardly produced in front ; the eyes large, globular, black, extending laterally nearly as far as the anterior angles of the thorax ; between the eyes is a minute and directly transverse fovea, which when viewed under a high power is medially subsinuate (not distinctly angulated, as in M. semichcdybeus ; or semicircular, as in 31. semiviolaceus) ; surface impunctate, flavo-rufous, obsoletely suffused with fuscous ; glabrous. Thorax transverse, rectangular, anteriorly slightly emarginate, the anterior angles subacute, and slightly depressed ; the sides margin- ate ; at the base is a transverse thread-like fovea, which is deflected at right angles (before it reaches the humeral angle) to the base ; sur- face impunctate. Scutellum triangular, impunctate, glabrous. Elytra parallel, subdepressed, rounded at the apex, impunctate, except under a high power, when rows of minute punctures may be discerned, arranged in the form of striae ; these stria3-like punctures are much more minute than in M. semiclialybeus, and more distinct at the base than in 31. semiviolaceus ; the colour is dark-fuscous, suffused irre- gularly throughout, and especially near the base, with flavous. An- tenna? filiform, rufous, at the apex fusco-rufous. Legs flavo-rufous throughout. Brazil. In the collection of M. Chevrolat. From M. semiclialybeus this species is separated by its minute punctures on the elytra, and from 31. semiviolaceus by its larger size, more elongated form, and its different markings on the head ; it differs, in addition, from all the species which approach it by the irregularly clouded flavo-fuscous colouring of its elytra: it maybe a question, whether this latter, if alone, would be a permanent specific character, or whether it is only the accidental variation of a single individual. 15. Monoplatus nigrimanus. M. oblongo-ovatus, subparallelus, subdepressus, rufo-fiavus, glaber ; capite brevi, impunctato, lsevi, haud foveolato ; tliorace transverso, rectangidari, ad basin transverse foveolato ; elytris subtiliter striato-punctatis, rufo-fiavis, ad apicem fuscis ; antennis fuse is, art. basalibus rafts ; pedibus rufis, tarsis anterioribus fusco suf- fusis. c? Long. corp. 2^ lin., lat. 1^ lin. Oblong-ovate, subparallel. subdepressed, rufo-flavous, glabrous. MONOPLAXUS. 19 Il( ad short, transverse, not produced in front ; eyes globose, situated nearly at the base of the head ; between the eyes, above the base of the antennae, the surface is impunctate, and unmarked by any trans- verse fovea. Thorax transverse, rectangular, the anterior margin distinctly emarginate (more apparently so than in the allied species M. nigricans and M. semiviolaceus) ; the sides marginate, especially near the anterior angles ; at the base is a transverse fovea, well de- fined, abruptly terminating before it reaches the margin by being deflected (at right angles) to the basal line ; the surface is impunc- tate throughout and rufo-flavous. Scutellum triangular, impunctate. Elytra broader than the thorax, subparallel, subdeprcssed, marked throughout with very minute strioe-like punctures (which are not discernible except under a high power) ; the colour is rufo-flavous, at the apex broadly fuscous, — the line of demarcation between the two being medial, and slightly inclining towards the apex at the suture and at the margination ; the line itself is not so distinctly defined as in M. semiviolaceus. Antennae fuscous, the basal joints being rufous. Legs rufous, the anterior tarsi being suffused with fuscous. Brazil. In the collection of M. C'hevrolat. This species most closely approaches to M. semiviolaceus, both in general colouring and in the details of sculpture. The absence of any transverse fovea on the head sufficiently characterizes it as a species, inasmuch as this — the character of the transverse markings between the eyes — seems to be constant throughout the group, and of con- siderable importance in the determination of species. From M. semichalybeus it is easily separated by the minuteness of the punctua- tion on its elytra, and by the direction of the transverse line of sepa- ration between the two colours on the elytra. 16. Monoplatus dimidiatipennis. M. oblongo-ovatus, subparallel us, subdepressm, rufo-Jlavus, glaber; capite brevi, antiee hand producto, inter oculos haud foveolato; ihorace transverso, impunctato, ad basin transverse foveolato ; elytris parallelis, striato-punctatis, haud ad latera carinatis, gla- bratis, ad apiceni nigro-fuscis ; antennis fuscis, ad basin jlavis ; pedibus flavis, posticis tibiis tarsisque piceo suffusis. 3 Long. corp. 2|- lin., lat. 1^ lin. Oblong-ovate, subparallel, subdepressed, rufo-flavous, glabrous. Head short, transverse, not produced in front ; eyes large, globular, situated at the base of the head ; the surface above the base of the antennae is impunctate, and unmarked by fovea?. Thorax transverse, rectangular; the anterior margin is slightly emarginate (less distinctly c2 20 MONOPLATtTS. so than in M. semicJialybeus) ; the sides marginate, especially an- teriorly; the surface impunctate and glabrous; at the base is a transverse fovea (less deep and somewhat less distinct than in M. semichalybeus), terminating, as in other species, by being deflected into the basal line before it reaches the margin of the thorax. Scutellum triangular and impunctate. Elytra subparallel, rounded at the apex, impressed throughout with tolerably distinct punctures arranged in the form of striae, of equal distinctness with those of semichalybeus; it differs, however, ftvni this species in having the surface entirely equate and smooth — not raised into longitudinal keel-like ridges parallel with, and closely adjoining the lateral mar- gination ; the colour is rufo-flavous, at the apex broadly fuscous, — the line of boundary between the two colours being medial, and slightly inclined towards the apex as it approaches the margination. Antennae fuscous, the foiu' basal joints being ftavous. Legs flavous, the posterior tibia? and tarsi as well as the termination of the femora being suffused with piceous. Brazil. In the collection of M. Chevrolat. This species differs from all others allied to it in colour by the depth of the punctuation of the elytra, and also generally by its un- foveolated head ; from semichalybeus, to which it is closely allied, by its punctuation, and the absence of any keel-like ridges at the sides of the elytra. I believe that this group of six species (which have their elytra rufo-flavous, the apex being broadly fuscous) are all specifically distinct ; their differences rest on small, but well-defineable and apparently permanent characters. 1 7. Monoplatus angulatus. M. oblongo-ovatus, subparallelus, testaceo-rufus, glaber; capiie brevi, inter oculos subtiliter foveolato ; thorace transverse-, ad basin transverse foveolato, punctulato ; elytris pvmctato-striatis, ad apicem fusco-nigris, ad basin testaceo-ritjrs ; antennis filiformibus, fuscis, ad basin rufo-flavis ; pedibus rufo-jtavis. Long. corp. 2 lin., lat. | lin. Oblong-ovate, subparallel, testaceo- rufous, glabrous. Head short, hardly produced in front ; labrum subattenuated and rounded at the apex ; eyes large, prominent, situated at the base of the head, and extending laterally nearly as far as the anterior angles of the thorax ; from the insertion of the antennae a faint medial longitudinal fovea extends nearly to the base, which is bisected at right angles by a transverse fovea connecting the inner margins of the eyes (these MOKOrXATTTS. 21 two lines together forming the character of a cross) ; the surface ini- punctate, glabrous. Thorax transverse, the anterior angles subacute and depressed, the sides broadly and distinctly marginate ; at the base is a well-defined transverse groove parallel to the line of the base, but subsinuate, and terminating abruptly before it reaches the lateral margination by being deflected at right angles into the line of the base ; the surface very finely punctate, glabrous. Scutellum triangular, impunctate. Elytra slightly broader than the thorax, subrobust, punctate -striate, the striae becoming obsolete near the sides, and the punctures being distinct and well-defined; the apical half of the surface is of a bright fuscous-black colour. Antenna; fili- form, fuscous, the three basal joints being rufo-flavous. Legs rufo- flavous throughout. Brazil. In the collection of M. Chevrolat. This species closely approaches semichdlybeus, being however abun- dantly distinct, not only by its smaller size and more pronounced punctures on the elytra, but also by the sinuation in the basal fovea of the thorax, by which latter character it separates itself from all other species of the group with which I am acquainted. 18. Monoplatus impunctatus. M. oblongo-ovatus, parallelus, striato-punctulatus, niger, nitidus ; capite brevi, inter oculos transverse foveolato, impunctato, jiavo ; thorace transverso, rectangular i, ad basin transverse foveolato , ad latera marginato, impunctato, jiavo ; el ytr is parallel is, striato- punctatis, ante medium oblique depresses, nigris, nitidis; antennis fuscis, art. 1-3 flavis ; pedibus Jlavis. S Long. corp. 2\ lin., lat. f-1 lin. Oblong-ovate, subrobust, parallel, punctate, black, shining. Head short, transverse, slightly produced ; above the labrum is a transverse depression, bisected medially by a longitudinal carination ; on either side of the insertion of the antennae (adjoining the inner surface of the eyes) is a minute depression ; between the eyes (midway between the basal line and the insertion of the antennae) is a transverse thread- like and very minute fovea ; eyes large, globose, extending laterally as far as the anterior angles of the thorax ; surface impunctate and rufous. Thorax transverse, in front hardly emarginate ; the anterior angles are depressed and subacute, the sides marginate ; at the base a transverse fovea (distinct, narrow, and thread-like) extends parallel to, and joins the line of the base by an abrupt deflection near the posterior angles ; surface impunctate and flavous. Scutellum trian- gular, impunctate, fulvo-flavous. Elytra broader than the thorax, 22 roicus. subparallel, depressed, with striae-like punctures disposed evenly throughout the surface (these punctures are extremely minute, and can only be seen under a very high power) ; an antemedial trans- verse shallow depression (when viewed laterally) gives an appear- ance of prominence to the surface near the scutellum ; at the shoulders near the seventh stria is a short and well-defined longi- tudinal depression. Antennae filiform ; the first j oint long and broadly developed, especially medially and anteriorly, and slightly curved (not geniculated) outwardly ; the second shorter and narrower, ovate ; the third longer than the first ; these three basal joints are fulvous ; the rest (which are shorter) are fuscous. Legs flavous, the anterior tibiae and tarsi being fuscous. A single example of this species, from " Brazil," is in the collec- tion of Mr. Murray. Genus 2. ROICUS*. Labrttm transversum. Palpi maxillares elongati, siibcylindrici, ad apicem attenuati. Palpi labiales paralleli, subelongati, art. 2" elongato. Antenna robiiske,jiliformes, approximates. Oculi subglobosi, ad latera capitis, distantes. Caput subdepression, subelongatum, haud attenuatum. Thorax capite latior, quadratus, antice subemarginatus, ad latera di- stincte angidatus. Elytra sat robusta, subparallela, ad apicem attenuata, baud ante me- dium transverse depressa. Pedes robusti, tibia; incurvatce — posticis, apicem juxta, dente brevi armatis. Labrum transverse, truncated at the extremities. Mandibles concealed. Maxillary palpi (Tab. I. fig. 5m) elongate, parallel, not geniculated; the first joint minute ; the second subparallel, slightly constricted at the base ; the third longer than the second, cylindrical, not rounded at the extremities ; the apical minute, one-third of the breadth of the second, and its length being hardly greater than its breadth, in form conical. Labialpalpi (Tab. I. fig. 5n) elongate, parallel, the basal joint shorter than the second ; the second subparallel, slightly attenuated towards the base, the length nearly double the breadth ; the apical joint minute. * poiicos, valgus. EOICUS. 23 Antennas situated at the front of the head, at some distance from the inner margin of the eyes, approximate, robust, filiform, of nearly the same length as the elytra ; the basal joint incurved outwards, dilated and rounded, the breadth near the apex being half its length ; the second joint short, subovate, its breadth being half the breadth of the basal joint, and its length not greater than its breadth, abruptly truncate, and not rounded at its apex ; the third longer than the first, of the same breadth as the second, slightly dilated at the apex and obliquely truncate ; the fourth joint to the eighth of the same form, but slightly shorter than the third ; the ninth and tenth less robust; and the terminal joint finely attenuate at its ex- tremity. Eyes subglobose, situated at the sides of the head (at some distance from each other), and at some distance from the basal line. Head depressed at right angles to the plane of the elytra ; when viewed from above, transverse ; elongated in front ; the lateral mar- gins being parallel, and the apex broad and transversely truncate, not attenuated. Thorax broader than the head, quadrate (almost elongate), an- teriorly very slightly emarginate ; the sides finely but evenly mar- ginate, produced antemedially into a broad and distinct lateral an- gular projection, thus giving to the thorax the form of an almost equilateral hexagon. Scutellum large, triangular, impmictate. Elytra broader than the thorax, subparallel, robust, slightly at- tenuated towards the apex, with no trace of a medial transverse depression ; in sexmaculatus very finely punctate, impubescent, gla- brous. Legs robust and long, very finely pubescent (when seen under a high power). The anterior femora robust, subdilated medially, im- punctate . The tibiae robust, incurved distinctly but gradually through their whole length, and subincrassated towards and at the apex. The tarsi (Tab. I. fig. 5 d) short, and clothed with thick pubescence ; the first joint is broad, dilated, and subcordiform ; the second of half the breadth, short and ovate ; the third not larger than the second, bilobed ; and the apical impubescent, slightly and gradually dilated towards the apex, and incurved. The claw (Tab. I. fig. 5 e) is bifid, simple, at right angles to the shank, and its two members widely apart ; the base of each is thickened at the inner side, but without any trace of an inner tooth, as in other neighbouring genera. The posterior femora (Tab. I. fig. 5/) are broad and dilated ; when viewed laterally, rounded at the upper margin, and at the lower tolerably rectilinear in outline ; the apex is broadly and obliquely 24 roicus. truncate. The tibia (Tab. I. fig. 5 g) is robust, of equal length with the anterior tibiae, gradually incurved downwards and inwards through its whole length, subdilated towards the apex : when viewed obliquely, the posterior surface is flattened, having the appearance of being in fonn triangular rather than subcylindrical ; the edges of this flattened side are distinctly marginate ; in the inner margina- tum, near the apex, is a well-developed angular projection ; while at the apex itself, immediately behind the insertion of the tarsus, is a prominent and robust tooth-like claw. The tarsus (Tab. I. fig. 5 h) is short, the first joint being subelongate, and attenuated at the base ; the second and third are narrower and much shorter, ovate (the third joint being somewhat smaller, and not bilobed) ; the apical joint is elongate, impubescent, gradually incrassated from the apex, terminating at its extremity in a bladder-like inflation which partially conceals the terminal claw. The claw is bifid ; at the inner surface there is a greater tendency to a tooth-like prominence than in those of the anterior legs. 1. Roicus sexmaculatus. (Tab. I. fig. 5.) K. oblongo-ovalis, subcylindricsus, parallelus, jiavus, nitidtis ; ca- pite brevi, inter ocidos transverse foveolato ; thorace magna, sub- elongato, ad latera in medio angulato, impwictato ; elytris punctis inin litis, veluti in striis, ordinatis, maculis sex rufo- testaceis ; antennis fusco-fiavis j pedibus robustis, tibiis curvatis, his {cum tarsis) rufo-fuscis, femorihns testaceis. Long. corp. 3^ lin., lat. corp. 1^- lin. Oblong-oval, subcylindrical, elongated, testaceous. Head short, depressed, very slightly produced ; the eyes are situated at some distance from the back of the head ; insertion of the antennae con- tiguous ; above the insertion and between the eyes is a transverse depression (deepest and broadest in the middle) extending obliquely to the upper surface of the eyes ; mouth and maxillary palpi fer- rugineous; lower part of the head testaceous, the upper part impunc- tate, testaceous. Thorax quadrate ; from the anterior, and also from the posterior angles, the sides gradually expand, forming at the side, antemedially, a prominent angle, slightly marginated ; surface me- dially depressed (although it seems doubtful whether the depression, in the example before me, be not the result of accident), impunctate, glabrous ; flavous, at the sides very slightly suffused with rufous. Scutellum triangular, impunctate, rufo-fuscous. Elytra not much broader than the thorax, parallel, subcylindrical, with very faint and obsolete punctures arranged as strife (these are only visible under a high magnifying power), the surface appearing under an ordinary EUPHENGES. 25 lens to be impunctate ; pale testaceous, with six large and distinctly defined rwfo-testaceous spots, arranged at equal distances one from the other and midway between the suture and margination — two (circular) at the base, two larger (and approaching the form of a parallelogram) at the middle, and two (subcircular) at the apex; margination of the elytra rufo-flavons ; surface obsoletely pubescent. Antennas filiform, long, tolerably robust, and slightly tapering to- wards the apex; the first joint is much broader than the others, curved outwards and dilated at the extremity ; flavous, the rest rufo- fuscous, with the three terminal joints rufo-testaceous. Legs large (compared with the magnitude of the body) ; the tibiae, which are singularly robust, are all distinctly curved or bent inwards ; femora testaceous, tibia; and tarsi rufo -fuscous. A single specimen was captured by Mr. Bates in the district of the Amazon, and is in that gentleman's cabinet. Genus 3. EUPHENGES*. Labrum subcirculare. Palpi maxillares Jiliformes, art. 3"s elongatus, et 4KS brevis, et ad basin latus haud productus. Palpi labi ales Jiliformes. Axtenx^e ad medium subincrassatcB, subpubescentes. Caput inelinatum, transversum. Thorax elongatus vel quadratus, rectangular is, ad basin constrictus, ad latera depressus et marginatum. Elytra sat lata, ad apicem attenuata, aliquando fortiter ante medium oblique depressa ; plerumque glabra. Pedes robusti ; tarsorum antic, art. 2"* brevis ; tibixe posticce ad api- cem dentibus duobus armataz. Labrum subcircular, narrower than the base of the head ; the sur- face is sprinkled with a few separate and strong hairs. Mandibles robust, partially concealed. Maxillary palpi (Tab. I. fig. 7 m) filiform, elongate, not genicu- lated ; the basal joint minute, abruptly truncate at its apex ; the second slightly dilated towards the apex ; the third somewhat longer than the second, subparallel ; the apical joint larger in proportion than that of Roicus, but minute, much narrower than the second, and conical. Labial palpi (Tab. I. fig. In): the second joint is slightly dilated medially, and the third subelongate and conical. * evfeyyrjs, prscclarus. 26 EUPHENGKS. Antennae (Tab. I. fig. 7 a) more or less incrassated and subpu- bescent, in length equal to two-thirds of that of the elytra ; the first joint is narrow at the base, dilated medially, and distinctly curved outwards ; the second short and ovate ; the third elongated, of greater length than the second, fine, and very slightly incrassated towards the apex ; the fourth of the same form (but hardly so long) as the third; the fifth to the eighth short, distinctly dilated, the breadth of the seventh being almost equal to its length ; the apical joints are more attenuated: all are (when viewed under a high power) subpubescent, the apex especially of each joint being clothed with a few distinct and strong hairs. The antennae are approximate at their base, situated immediately below and between the eyes. Eyes large, subglobose, situated nearly at the base of the head. Head transverse ; when viewed from the side, inclined at right angles to the plane of the elytra ; not produced in front, deeply and thickly punctate. Thorax elongate, slightly broader than the head, rectangular, somewhat constricted towards the base ; the sides are depressed and deeply marginate : very deeply and coarsely punctate. Scutellum triangular, impunctate, situated below the plane of the elytra. Elytra considerably broader than the thorax, robust, slightly at- tenuated towards the apex : in Lemoeides, a few deep and scattered punctures are found antemedially, grouping themselves around a deeply incised medial oblique depression. Legs robust; under a high power very finely pubescent. The anterior femora are slightly incurved, with a tendency to dilatation medially and near the apex. The tibia? are straight, and of the same breadth throughout. The tarsi (Tab. I. fig. 7 d) are short, more di- stinctly pubescent ; the basal joint is broad, cordiform ; the second smaller than either the first or the third, and ovate ; the third is shorter than the first, but somewhat broader, fringed throughout with a thick and close pubescence, not bilobed; the apical joint is elongate, gradually incrassated towards the apex. The terminal claw is simple, not toothed in its inner surface. The posterior femora are (when viewed transversely) oviform, considerably incrassated through- out, but most so medially. The tibia (Tab. I. fig. 7 g) is short, of equal breadth throughout, slightly incurved at its immediate base ; and beyond the insertion of the tarsus (where it is somewhat dilated) more distinctly sinuated, and produced at the extremity into two curved, short, and robust teeth; the insertion of the tarsus is at between one-sixth and one-fifth of its total length. The tarsus (Tab. I. fig. 7 h) is more elongate than the anterior, and considerably EUPHENGES. 27 narrower ; the first joint elongate, attenuated, subdilated, and trun- cate at the apex ; the second shorter, and of the same form ; the third subovate, not bilobed ; the whole densely fringed with close pubescence ; the last joint terminates in a bladder-like inflation, which, from above, completely conceals the terminal claw, and which (more distinctly seen when viewed obliquely) itself is terminated in a pseudo-claw, similar in form and size to the claw which it protects. 1. Euphenges sericeus. (Tab. I. fig. G.) E. oblongo-ovatus, latus, robustus, impubescens, rufo-ferrugineus ; eapite brevi, transverso, elongatulo, super basin antennarum ob- lique {in litterce V forma) carinato, subtiliter pubescenti, ad apicem jiavo-rufo, ad basin fusco-rufo ; thorace quadrato, angulis sub- acutis, ad basin transverse depresso, impunctato, glabro, ad latera fulvo-pubescenti ; elytris latis, ad apicem subattenuatis, striato- punctatis, ante medium oblique depressis, hac fovea obliqua, apice, et marginatione lurido-pubescentibus ; antennis filiformibus, ro- bustis, art.l-hfulvis, 6-11 piceis ; pedib us robustis,paUide rufis, femoribus posticis nigro adumbratis. Long. corp. 3 lin., lat. If lin. Oblong-ovate, broad, robust, impubescent, of a palish brown-red colour throughout. Head transverse, narrow, elongated in front : be- tween the upper part of the labrum and the base of the antennae is a triangular carination, which is bisected by a longitudinal medial carination from the base of the antennae : above the base of the an- tennae and between the eyes is a Y-shaped ridge, extending in an oblique direction towards the inner and upper margin of the eyes ; this ridge is most apparent when seen obliquely : eyes tolerably large, situated at a short distance from the base of the head, and not extending laterally as far as the angles of the thorax : the surface very obsoletely clothed (when viewed under a very high magnifying power) with flavous pubescence, especially near the inner margin of the eyes ; the colour below the base of the antennae flavo-rufous ; above, of a darker brown rufous. Thorax quadrate, rectangular, rectilinear, slightly broader than the head, considerably narrower than the elytra ; the anterior and posterior angles subacute ; the an- terior angles subdepressed, the sides marginate, while at the base is a broad and very shallow transverse depression ; the surface is im- punctate, glabrous, and thickly clothed at the sides with a close tawny pubescence. Scutellum triangular, fuscous, indistinctly clothed with flavous pubescence. Elytra much broader than the thorax, slightly attenuated towards the apex; punctures, arranged in the form of striae, become almost entirely obsolete near the apex : a little 28 euphenges. in front of the middle is an obliquely transverse depression, extending from the first or second stria towards the shoulders ; this depression is abrupt in form, and clothed with thick tawny pubescence ; the base also, broadly (that is, for about a third of the whole length of the elytra), and the margination (more broadly and distinctly behind the shoidders) are similarly clothed with thick pubescence of an ashy- fulvous colour. Antennae long, robust, the length of the joints from the third to the eleventh being nearly equal ; the joints 1-5 fulvous, 6-11 piceous. Legs robust, pale rufous, — the apex of the posterior femora being tipped with black, and the tarsi being suffused witb piceous. Brazil. In the collection of M. Chevrolat. 2. Euphenges Lemoeides. (Tab. I. fig. 7.) E. oblongo-ovatus, punctatus, ferrugineus, nitidus; capite brevi, ad basin antennarum bituberculato, crebre punctato ; tJwrace qua- drate, rectangidari, ad basin transverse depresso, punctato ; elytris apicem versus attenuatis, ad basin punctatis, ad medium oblique fossulatis, ad apicem impunctatis ; antennis robustis, art. 5-8 incrassatis ; flavis, art. 6-8 nigris ; pedibus fid vis, tibiis jiosticis incurvatis. Long. corp. 1| lin., lat. | lin. Oblong-ovate, coarsely and sparingly punctate throughout, bright ferrugineous. Head short, slightly produced ; eyes large, prominent, situated at the base of the head ; below the insertion of the antenna? is a transverse triangular plane depression ; immediately above the base of the antennae are two contiguous obsolete tubercles ; surface coarsely and very thickly punctate. Thorax quadrate (almost elon- gated), rectangular, subcylindrical ; the anterior angles are depressed ; sides marginate ; at the base is a broad, transverse, shallow depres- sion ; surface coarsely punctured (the punctures being less frequent than on the head). Scutellum small, triangular. Elytra at the shoulders broader than the thorax, and gradually diminishing in breadth towards the apex ; impunctate ; from the base four lines of broad and coarse punctures (three near the humeral angle, and one at the suture) terminate in a veiy deep abrupt channel, which is deepest and broadest near to the mid suture, thence extending up- wards obliquely towards the humeral angle. Antennae short, robust, incrassated ; the first joint broad, medially dilated ; the second very short, narrower ; the third fine, twice the length of the first ; the fourth nearly as long as the third ; the fifth to eighth gradually in- crassated ; all subpubescent ; the first joint rufo-flavous, the second rufo-fulvous, the third and fourth flavous (clouded with testaceous), PHYSONYCHIS. 29 the fifth to eighth black, the ninth to eleventh flavo-testaceous. Legs tolerably robust ; the posterior femora subelongate, robust, parallel, with an oblique fovea on the outer side near the apex ; the posterior tibiae robust, incurved, produced considerably beyond the insertion of the tarsi ; colour fulvous throughout. This species closely resembles in its general form that of the genus Lema, and in this respect differs from the preceding species. By the characters of its mouth (combined with the form of the elytra and of the posterior tibiae) it proves itself clearly to be separated gene- rically from other neighbouring species. From the Amazon River. In the collection of Mr. Bates. Genus 4. PHYSONYCHIS*. Dej. Cat. (1837) p. 408. Ovatus, subparallelus, impubescens. Labrum subcirculare. Palpi maxillares elongati, art. 3° subcylindrico (ad apicem leviter dilatato), ultimo abbreviato. Palpi labiales minuti, haud elongati. Antennae robustce, subincrassata;, art. 1, 2, 8 et 11 compressis et dila- tatis (in 2 simplicibus). Caput haud productum, depressum, breve. Thokax latus, transversus, ad latera marginatus. Elytra parallela, subdepressa, ad apicem, rotundata. Pedes robusti, tibiarum apicibus in J dilatatis. Labrum subcircular, more subcircular and relatively smaller than in the preceding genus, Euphenges. Mandibles robust; at their inner edge is a slight tooth-like projec- tion ; concealed. Maxillary palpi (Tab. I. fig. 8m) elongate, geniculated probably at the apex of the second joint ; the basal joint obsolete ; the second parallel, subdilated and truncate at its apex, which receives the in- sertion of the third joint ; the third joint is longer, subcylindrical, slightly dilated towards the apex, broader than the second (its length being nearly double its breadth) ; the apical joint is abbreviated, conical, at the base equal in diameter to the apex of the third joint. Labial palpi minute, not elongated ; the apex of the terminal joint rounded. Antenna? (Tab. I.fig.8«) robust, filiform, pubescent, subincrassated ; * fvadoj, inflo ; ovvt, unguis. 30 PHYSONYCHIS. the basal joint very long and broadly developed, the breadth being half its length, and nearly three times the length of the second joint ; flattened, not cylindrical ; the sides parallel ; and the apex, not attenuated, but broadly and transversely subsinuate ; at the angle of the apex is the insertion of the second joint, which is short and ovate ; the third joint to the sixth are elongate, subdilated towards the apex (the fourth, fifth and sixth being each distinctly longer and more robust than the third) ; the seventh is incurved and obliquely truncate at the apex, thus causing the insertion of the eighth to be not in the same line as that of the others ; the eighth is broader and much shorter than the seventh, its breadth being almost equal to its length, sinuate in form, dilated at the inner side of the base, and broadly truncate at the apex ; the ninth and tenth are of equal breadth with, but shorter than, the eighth ; and the eleventh is greater in length than the ninth and tenth together, somewhat narrower, curved outwards at the base, and slightly attenuated towards the apex. In the females the antennae are filiform, robust and simple, — the first joint being, however, considerably flattened and dilated, although not so much as in the males, and the fourth joint longer and more robust than the others. Eyes large, subglobose, situated nearly at the base of the head, and distant. Head short, transverse, very slightly produced in front, and in- clined at right angles to the plane of the elytra. Thorax much broader than the head, transverse, in front di- stinctly emarginate ; the sides broadly marginate, and converging towards the front ; the line of the base is somewhat rounded — that is, parallel to the line of the anterior margin. Scutellum large, triangular, — the apex being subcircular, im- punctate, and glabrous. Elytra broader than the thorax, parallel, subdepressed, rounded at the apex, at the sides marginate, covered throughout with minute and very thickly disposed punctures ; along the surface are two obscurely defined longitudinal ridges, in some specimens almost ob- solete. Legs robust, impunctate. The anterior femora are tolerably robust, hardly dilated, cylindrical. The tibiae shorter than the femora, di- lated towards the apex, rounded at their inner margin, and flattened or somewhat hollowed out at the outer margin, — armed in both sexes around the socket that receives the apex of the tarsus with a row of strong, upright, closely arranged teeth, resembling rigid hairs, or the teeth of a comb. In the males the apex of the tibiae (Tab. I. fig. 8 c) is very considerably dilated, and produced at its anterior margin into PHYSONYCHIS. 31 an obtuse angle, broadly truncated at tbe apex ; around this trun- cation (which is much more prominent than in the females) is a row of closely arranged spines, while the angle of truncation itself is armed with an acute spur, and the whole surface clothed with thick and very strong pubescence. The tarsus is short, and in both sexes robust; the basal joint is broad and short, somewhat rounded ; the second more minute, and triangular ; the third joint is somewhat broader than the basal, broadly triangular, not bilobed ; the fourth joint is elongate, slightly incurved, and gradually incrassated towards the apex ; the apical claw being bifid, and armed at the inner surface of each limb with a short, strong spur-like process. The posterior femora are broad, dilated, and when viewed obliquely from beneath, very much rounded above, and almost hollowed out at their lower margin. The tibice are straight, abruptly bent at the immediate base and gradually dilated towards the apex ; the terminal socket (at the insertion of the tibise) is armed on either side with minute comb-like teeth. The posterior tarsi are short, and less dilated than the anterior; the first joint being triangular ; the second of similar form, but more minute ; the third shorter, but broader than the first, almost circu- lar, not bilobed ; and the apical joint attenuated (shorter than the posterior), and terminating above the apical claw in a globular in- flation. In Physonychis the sexual characteristics are the dilatation of the antenna? in the males (the basal, and eighth to eleventh joints), and the lateral projection at the apex of the anterior tibiae ; there is a slight difference also between the sexes in coloration. 1. Physonychis smaragdina. (Tab. I. fig. 8.) B.M. p, ( $ ) oblongo-ovata, parallela, sybcylindrica, crebre punctata, viridi-amea aut ainea, glabra; capite brevi, inter oculos longi- tudinaliter foveolato, ad basin variolato,flavo-ferrugineo, ad basin fusco ; thorace lato, transverso, ad latera marginato, ad basin transverse depresso, punctato, jiavo-ferrugineo ; elytris parallelis, ad apicem rotundatis, crebre punctatis ; antennis robustis, ad apicem dilatatis, art. 7 et 11 plus minus incurvatis, art. 1-5 flavis, 6-11 fuscis ; pedibus sat robustis, Jkivis, femorum postico- rum apicibus fusco suffusis. S Long. corp. 3| lin., lat. If lin. $ Long. corp. 3^-4 lin., lat. 1^-2 lin. Oblong-ovate, parallel, subcylindrical, rounded at the apex, deeply and thickly punctate, of a bright metallic-green colour. Head short, transverse, depressed, hardly produced in front ; immediately above the labrum is a broad deep and transversely depressed plane, ex- 32 PHTSOKTCHIS. tending at its npper surface to the base of the antenna? ; above the base of the antenna? is a longitudinal deep fovea, on either side of which (closely adjoining the margin of the eyes) is a more minute longitudinal depression, which is most distinct at the immediate base of the antennae ; the medial fovea is bounded on either side by a some- what raised and glabrous surface, and terminates abruptly before it reaches the base of the head ; the surface at the base is thickly and very coarsely variolated ; colour flavo-ferrugineous, the basal line being distinctly fuscous ; the eyes are large and prominent. Thorax broader than the head, transverse and contracted in front, anteriorly very slightly cmarginate ; the anterior angles depressed and mi- nutely prominent ; the sides broadly marginatc ; at the base is a transverse depression closely adjoining the basal line (more distinctly apparent medially than at the sides), and corresponding in breadth and depth to the lateral marginations ; the surface is finely and thickly punctate throughout; flavo-ferrugineous. Seidell um triangular, rounded at the apex, impunctate, darkly flavo-ferrugineous. Elytra broader than the thorax, parallel, very slightly attenuated towards the apex, which is rounded ; the surface is covered throughout with exceedingly close and tolerably distinct punctures ; from the shoulders to the apex are two almost obsolete and indistinct longitudinal ridges, hardly perceptible except when under a high magnifying power ; the colour throughout is of a bright metallic emerald-green, shaded me- dially (in most specimens) with a tinge of copper colour. Antenna? robust and tolerably long, dilated towards the apex ; the first joint broad, ovate, and very distinctly flattened ; the second short and narrow; the third to the sixth elongated, and of equal breadth through- out ; the seventh is slightly incurved, and extends apically somewhat beyond the insertion of the eighth ; the eighth is shorter, broadly dilated, especially on the side of the apex of the seventh joint, and by this lateral dilatation, as well as by its proceeding from the side (rather than from the end) of the last joint, the seventh joint forms a geniculation, or elbow, in the line of the antenna? ; the ninth and tenth joints are broad and flattened, their outline being angulated at the apex and slightly rounded off at the base ; the eleventh and terminal joint is somewhat narrower than these, but equal in length to both of them united : in form slightly incurvated, the whole of the joints of the antenna? appear to be flattened, rather than of a cylin- drical form; in colour the joints 1-5 are flavous and 6-11 fuscous. Legs tolerably robust, flavous throughout, — the apex of the posterior femora being suffused with fuscous. The above description is taken from a male specimen. The females have (as we might expect) filiform and simple antenna?, though of RHINOTMETUS. 33 equal length with those of the males ; the legs also (especially the anterior tibiae) are not quite so robust. All the examples which I have seen differ also sexually in shade of colour, there being in the females an entire absence of a metallic coppery hue ; and the emerald green colour, so conspicuously beautifid in the males, being repre- sented by blue. This handsome species is not uncommon on the western coast of Africa, — Guinea, Senegal, and Old Calabar. Genus 5. RHINOTMETUS*. Dej. Cat. (1837) p. 407. Corpus elongato-ovaJe vel subovatum, conveooum, Labrum transversum, integrum. Mandibul^: robustce, reconditce, ad apicem ipsum sapiusjissa?, necnon intra apicem dente armatce. Palpi maxillares elongati, subincrassati, art. 3h° ad apicem oblique truncate Palpi labiales minuti, art. 2nd" lato. A.HTVKyjEJilifor'mes, articidis 1'"° et 3**° inter se cvqualibus (illo distincte robusto), 2nd" brevi, ultimo ad apicem acuminato. Caput plus minus antice product um, subattenuatum. Thorax elongatus, haud transversus, elytris plerumque multo an- gustior, antice rotundatus et subcontr actus, ad latera depressus et marginatus. Elytra sat robusta, punctato-striata, modo vestita, modo nuda. Abdomen e segmentis quatuor composltum. Pedes saltatorii (femoribus posticis valde incrassatis) ; tibiis anteriori- bus ecalcaratis, posticis calcari singulo unciformi armatis ; tarsis pseudotetrameris, anterioribus subtus dense vestitis, artic. I™0 et 3'10 dilatatis (hoc valde bilobo), posticis haud dilatatis, brevibus, articidis lm0, 2nd0 et 3"° subcequalibus (2nd0 et 3''° inter se subarctius connatis), subtus leviter productis, articulo ultimo ad apicem ipsum in globulum subito aucto, unguiculis minutis subtus munito, superne e visu reconditis. Labrum transverse or subsinuate, rounded at the lateral margins, narrower than the base of the head. Mandibles small, robust, concealed from above. Maxillary palpi (Front, fig. 3m, 5m) elongate, subincrassated ; the basal joint small; the second ovate, truncate at the apex, and gra- dually attenuated towards the base, the length being not quite double ■the breadth ; the third is of the same form as, but slightly longer and wider than, the second, broadly truncate at the apex; the terminal * piv, nasus ; rizftvw, seco. 34 HHLNOTMETUS. joint is short, conical, its base being much smaller than the apex of the third joint, and its length being greater than its breadth. Labial palpi (Front, fig. 4 n, 5 n) minute ; the basal joint attenu- ated ; the second broader, and transversely truncate ; the apical joint minute, shorter and much narrower than the second. Antenna robust, filiform, tolerably approximate, situated below and within the inner margin of the eyes ; the basal joint dilated (in some species more than in others) ; the second is short and ovate, narrower than the first ; the third is not broader than the second, of equal length with the first ; the rest are subequal, slightly shorter as well as broader than the third, parallel, rounded at the base and truncate at the apex ; the terminal joint is more attenuated and produced. Eyes large, subglobose, situated at the side of the head, at some distance from the base. Head (Front, fig. 3 Jc) narrower than the thorax, elongated, broadly produced in front : this apical elongation varies in different individuals in length, but is in all instances very marked, as compared with the form of Monoplatus and other allied genera. Thorax elongate, attenuated in front, distinctly broader than the head, but narrower than the elytra ; the anterior angles are more or less depressed ; the sides are always tolerably parallel (except at the apex, where they are constricted, and rounded at the angle) and evenly submarginate ; the anterior margin is rounded more or less, never in any degree emarginate ; and the anterior angles are rounded (not, as in Tetragonotes, distinctly acute); the surface is either glabrous or pubescent. Scutellum triangular, occasionally subcordiform, generally im- punctate, and placed below the plane of the elytra. Elytra much broader than the thorax, subparallel, or in some species robust, punctate-striate, with an antemedial transverse de- pression (which is more or less distinct) extending obliquely upwards towards the shoulders, and giving an appearance of prominence to the scutellary angles ; the surface is generally punctate-striate. Legs sufficiently robust ; when seen under a high power, subpubes- cent for the most part. The anterior femora subcylindrical, of nearly equal breadth throughout. The tibial (Front, fig. 5 b) are inflected immediately at the base, straight, gradually and slightly incrassated towards the apex; at the apex itself (when seen from above) attenu- ated. The tarsi (Front, fig. 5 d) are shorter than the tibia ; the basal joint short and broad (not broader than the dilated part of the tibia) ; the second of the same form as the first, but smaller ; the third distinctly bilobed, the breadth being greater than the length ; these three basal joints are densely fringed with thick pubescence ; the RHINOTMETUS. 155 terminal joint elongated, gradually thickened and incurved towards the apex : the claw is hind (Front, fig. 5 e), each limb being cleft into two separate teeth ; it would seem that these two limbs are separable more or less from each other in different examples. The posterior femora (Front, fig. 4/) are somewhat flattened, but (when seen transversely) very short, in form ovate, truncate broadly at the apex, and generally pubescent. The tibia (Front, fig. 4/) is robust, straight, considerably shorter than the femur, somewhat incurved downwards at the immediate base ; the surface (when viewed from behind) is flattened, and longitudinally keeled or marginated: in each of these marginations, near the apex, behind the insertion of the tarsus, is a single broadly defined tooth (corresponding exactly with the row of tooth-like prominences in the females of Monopla- tus) ; this margination is continued on either side to the apex or socket which receives the tarsus, where it is armed with a row of short, sharp, and closely arranged teeth, and at its extreme apex armed further with a single (not double, as in other genera) incurved, robust claw. The tarsus (Front, fig. 4 h) is about two-thirds the length of the tibia, and constricted ; the first joint attenuated, and subdilated at the apex; the second of the same form as the first, but somewhat longer and narrower; the third much shorter and considerably broader, not bilobed ; these three are all margined, and clothed on the under surface with a slight pubescence: from a hollowed socket in the middle of the third joint proceeds the apical joint, elongated, gradually incurved, and terminating in a large globular inflation, which is above (and completely conceals) the apical claw ; this claw (Front, fig. 4 i) is bifid, each member consisting of two distinct teeth, cleft nearly to the base. This genus approaches PhysonycJiis in the peculiar construction of the apex of the posterior tibiae ; there is the same terminal claw and the same fringe of sharp and closely disposed teeth around the hollowed socket that receives the base of the tarsus ; and by the parallel and elongated facies of some of its species (as R. marginatum, R. cruciatus, and R. spectabilis) it forms a connecting link between this, the preceding group, and the following genus, Tetragonotes. 1. Rhinotmetus leptocephalus. CFidionvchis leptocephalus, Perty, Conspectus Anim. Artie, p. 110. tab. 22. fig. 5. It. oblongo-ovatus, subcylindricus, subelongatus, flavo-pubescens, niger ; capite elongato, ad apicem carinato, ad basin granulato, rufo ; thorace elongato, elytris angustiori, antice subattenuato, punctato, Jlavo-pubescenti, rufo ; elytris robust is, leviter punctato- n2 yd RH1N0TMETUS. striatis, pilo jJavescenti dense obtectis, maculis utrinque duabiis Capud humeros etpost medium) niyro-violaceis denudatis; antennis filiformibus, fuscis, ad basin rufo svffusis, corporis dimidio hand longioribus ; pedibus anterioribus pkeis, posticis rvfo-griseis. Long. corp. 3|-3f lin., lat. If lin. Oblong-ovate, robust, subcylindrical, subelongate, covered for the most part with a fine flavons pile ; black. Head short, transverse, produced broadly in front ; above the labrurn, extending to the base of the antenna?, is a longitudinal medial carination, divided at the insertion of the antenna?, and thence taking on either side an oblique direction ; near the labrum (extending to this medial ridge) are two other oblique carinations ; immediately above the insertion of the antennae (adjoining the inner surface of the eyes) are two minute depressions ; eyes tolerably large, situated nearly at the base of the head ; the surface granulated, rufous, suffused (especially in front) with fuscous, the labrum being flavo-rufous. Thorax quadrate (almost elongate), broader than the head, but constricted towards the apex, so as to meet anteriorly (and almost in the same line) the lateral margin of the head ; the surface is depressed (as compared with the surface of the elytra) ; the anterior angles are almost obsolete, and much depressed as well as constricted; the sides are faintly marginate; at the base (when viewed laterally) is an obsolete transverse de- pression ; the surface is finely punctate, darkly rufous, and covered (probably) throughout with a fine thick flavous pubescence. Scutellum triangular, impunctate, fusco-pubescent. Elytra considerably broader and more robust than the thorax, subattenuated towards the apex, punctate-striate (the stria? being obsolete and the punctures deeply impressed and distinct) ; at the shoulders, near the seventh stria, is a short and well-defined longitudinal channel, which gives a square and well-developed form to the extreme apex of the shoulder ; the sm'face is clothed throughout with a thick flavo-fulvous pubescence, except near the scutellary angles, where a considerable surface (denuded of this pubescence), of a circular form, is glabrous and black; also, postmedially, a transverse regidarly defined fascia is formed (broadest near the suture) by a similar absence of this pubescence ; at the shoulders (at the extreme apex) is an obscure suffused spot of rufous. Abdomen rufo-ferrugineous. Antennae robust, filiform, fuscous, the basal joint being rufo-fuscous. Legs clothed, more sparingly than the elytra, with flavous pubescence ; the anterior fuscous, sparingly suffused with rufous; the posterior rufous, the base of the tibia? and the inflated posterior claw being rufo-fuscous. Taken by Spix and Martius in the Minas province (Serra do Caraca), and by others sparingly in the neighbourhood of Rio Janeiro. EHIN0IMEXT7S. ">7 2. Rhinotmetus marginatum. (Front, fig. 3.) R. oblongo-ovatus, svbparallelus, suibcylindricus, pubescens, niger ; capite elongate, antice carinato, super basin antennarum foveolato, fiavo-pubescenti, ad basin granulato ; thorace quadrato, antice constricto, subtiliter punctata, glabro ; ehjtris sat latis et robustis, punctato-striatis, ad latent fascia dense rufo-testacea sericea mar- ginatis; antennisfiliformibus, nigro-fuscis, ad basin rufo suffusts; pedibus nigris, femoribus anterioribus ad basin, posticisque tibiis et tarsis rufo-testaceis (tibiis basalibus rafo-fuscis). Long. corp. 3 lin., lat. 1 lin. Oblong- ovate, subparallel, subcylindrical, less robust than E. lep- tocephalus, faintly pubescent, black. Head narrow, broadly elongated in the front : above the labrum is a medial longitudinal keel-like ridge, which extends to the base of the antennae ; on either side of this, two obliquely transverse carinations are produced to the lateral margins of the labrum ; above the base of the antennae is an obsolete and short longitudinal fovea : eyes large and tolerably prominent, situated at some little distance from the base of the head ; at their upper and inner margins is a very slight tubercle-like elevation, which is rufous ; the surface between the eyes is sparingly flavo- pubescent, and at the base coarsely granulated. Thorax quadrate (almost elongated); the sides parallel, and narrowed in front so as to meet the base of the head (not, as in E. leptocephalus, gradually constricted), broader than the head, with the anterior angles much depressed, constricted, and obsolete ; the sides submarginate ; near the basal angles is a broad and obsolete depression ; a faint medial longitudinal impression is apparent when viewed obliquely with a high power; the surface very finely punctate and glabrous. Scutellum triangular, impunctate, fuscous-black. Elytra broader than the thorax, parallel, subelongate, rounded at the apex ; the surface near the scutellary angles is very slightly raised ; punctate-striate (the punctures being almost entirely concealed by a short and closely squamose pubescence) ; from the fifth stria to the ninth (at the distance of two striae from the lateral margination) is a longitudinal band of close yellow or rufo-testaceous pile, completely clothing the surface, commencing at the shoulders and extending nearly to the apex. Antenna; robust, filiform, faintly subpubescent, fuscous, the basal joints being suffused with rufous. Legs black, the anterior femora being at their base and extreme apex flavo-ferrugineous, and the posterior tibiae and tarsi rufo-testaceous (the base of the tibia, and the globular inflation immediately above the posterior claw being rufo-fuscous). I took a single specimen of this beautiful and distinct species by 38 RHIN0TMETX7S. beating in the forests near to Constancia (the English boarding- house kept by Mr. E. Heath, in the heart of the Organ Mountains), December 1856. 3. Ehinotnietus cruciatus. (Front, fig. 4.) E. oblongo-ovatus, subparallelus, elongatus, fulvo-pubescens, punc- tato-striatus, niger ; capite antice producto et ad medium cari- nato, ad basin antennarum bituberculato, fulvo-pubescenti, ad basin granidato, inter oculos nigro, ad basin fusco-rufo ; thorace elongato, subdepresso, lateribus parallelis, antice constricto, plus minus fulvo-pubescenti, rufo, ad marg'mem et ad medium fusco ; elytris robustis, distincte punctato-striatis, nigris, pilo flavo testaceo brevi dense vestitis, apud Jutmeros macula subcircidari nigra, et apicem juxta altera oblongo-ovali, his maculis quatuor denudatis ; antennis jiliformibus, nigro-fuscis, art. 2-4 rufo suffusis; pedibus nigro-fuscis, posticorum tibiis tarsisque rufo- fiavescentibus. Long. corp. 3 lin., lat. 1 lin. Oblong-ovate, subparallel, subelongate, for the most part flavo- fulvous, pubescent, punctate-striate, black. Head narrow (as com- pared with the thorax), produced broadly in front (the labrum being abruptly narrower than the apex of the head) : from the base of the antennas are two. oblique carinations extending to the outer margins of the labrum ; between these is a medial longitudinal carination which reaches the base of the antennas ; immediately above the base are two longitudinal tubercular elevations, divided the one from the other by an abrupt and short fovea : eyes tolerably large and glo- bose, situated at some little distance from the base of the head ; the surface between the eyes is fulvo-pubescent ; at the base distinctly granulated ; near the insertion of the antennas the colour is black, at the base rufous or fusco-rufous. Thorax broader than the head, elongate, subdepressed ; the sides parallel, constricted in front, and slightly marginate; the base (when viewed laterally) is subde- pressed ; the anterior angles are obsolete ; the surface is clothed throughout with a fine fulvous pubescence (more distinctly near the base and sides); in colour fulvo-rufous, the margins, and also a medial longitudinal line, being fuscous. Scutellum triangular, im- punctate, flavous. Elytra broader than the thorax, subparallel, tolerably robust, rounded at the apex, punctate-striate (the striae being, except at the sides, obsolete, and the punctures deep and distinct) ; the colour is black, — a broad antemedial band, the apex, and also the suture, being rufous ; these cause the rest of the sur- face to constitute four large and subcircular black spots (those at the RHINOTMEXUS. 39 apex extending from the shoulders nearly to the medial elytra, and the postmedial pair extending nearly to the apex) ; these spots are well-defined and subcircular ; the rufous surface which separates them is clothed throughout with thick fulvous pubescence. Antenna; robust, filiform, fuscous, the basal joints being suffused with rufous. Legs sparingly pubescent, fuscous ; the base of the anterior femora being flavous, and the posterior tibiae and tarsi being rufous suffused with piceous. A single example of this species was taken by Mr. Gray and my- self near Petropolis (Organ Mountains, Rio Janeiro), February 1857. 4. Rhinotmetus spectabilis. (Tab. II. fig. 1.) R. oblongo-ovatus, parallelus, subdepressus, jlavo-pubescens, punc- tato-striatus, niger ; capite producto, ad apicem longitudinaliter carinato, ad basin antennarum bitubercidato, jlavo-pubescenti, granulato, inter oexdos nigro, ad basin rufo-fusco ; thorace elon- gato, antice constricto, ad angidos basales depresso, sparsim Jlavo-pubescenti, nigro, ad basin rufo-fusco; elytris subcylin- dricis, punctato-striatis, flavo-pubescentibus, nigris ; antennis robustis,jiliformibus,piceis,ad basin rtifis ; pedibus fuscis, tibiis tarsisque posticis pallide ferrugineis. Long. corp. 3 lin., lat. 1 lin. Oblong-ovate, parallel, robust, subdepressed, fusco-pubescent, punctate-striate, black. Head produced, elongated in front ; from the labrum a deep longitudinal carination extends upwards to the base of the antennae, on either side of which are two others obliquely transverse : immediately above the base of the antennas are two short longitudinal tubercular elevations (more distinctly apparent by a deep medial fovea between them) ; between these and the basal line is an obsolete medial carination : the surface is finely flavo-pubes- cent and granulated ; above the insertion of the antennae black, at the base of the head rufo-fuscous ; eyes large, prominent, globose, situated at some distance from the posterior margin. Thorax pro- duced (almost quadrate) ; the anterior angles are very much de- pressed and obsolete ; the sides parallel, marginate, and constricted in front ; near the basal angles is a broad and shallow depression ; the surface is finely and sparingly flavo-pubescent, more distinctly so at the base and sides ; black, the posterior margin being rufo- fuscous. Scutellum small, triangular, fuscous. Elytra parallel, robust, subcylindrical, punctate-striate (the punctures being quite obliterated, and the striae partially concealed by a thick golden- flavous pubescence) ; the surface beneath this pile is black. Abdo- men somewhat pubescent and black. Antennai robust, filiform ; the 40 RHISTOTMETUS. four basal joints are rufous, the rest piceous. Legs fuscous, — the base of the anterior femora, as well as the base of the tibiae, being rufous, the posterior tibia; and tarsi pale ferrugincous, and the glo- bular inflation of the posterior claw brightly rufo-fuscous. I captured a single specimen of this species at Petropolis (Organ Mountains, Eio Janeiro), in the montb of February 1857. 5. Rhinotmetus crucifer. It. oblongo-ovatus, attenuafus, parallelus, pubescens ; capite antice proclucto, ad apicem carinato, fiavo-pubescenti ; thorace elongato, antice constricto, angulis anterioribus obsoletis, dcpressis, jiavo- pubescenti, nigro ; elytris parallelis, punctato-striatis, holosericeis (nisi maculis duabus ad hmneros, alterisque postmediis ; hce quatuor rotundatce, pilo nigro-fusco obtectce) ; antennis filiformi- bus, fuseis ; pedibus ftdvis, tarsis tibiisque ad basin anterioribus fusco sujfusis, tibiis tarsisque posticis rufo-fulvis. Long. corp. 2| lin., lat. 1 lin. Oblong-ovate, attenuated, parallel, subcylindrical. Head pro- duced, elongated in front ; below the base of the antennae are two oblique carinations extending to the lateral margins of the labrum ; above the base of the antennae is a minute longitudinal fovea ; eyes large, prominent, situated at some distance from the base of the head ; the surface finely pubescent throughout. Thorax elongate, the sides parallel, and constricted in front ; the anterior angles ob- solete and much depressed ; the sides submarginate ; when viewed under a high power, a medial longitudinal fovea may be faintly traced, extending from the apex to the scutellum ; the surface is finely and thickly flavo -pubescent throughout, and black (not, as in B. eruciatus, sparingly flavo-pubescent and rufous). Scutellum triangular, im- punctate, and fuscous. Elytra parallel, subdepressed, punctate- striate (the punctures being entirely, and the striae almost entirely concealed by a thick pubescence which clothes the surface through- out) ; the markings on this pubescence closely resemble the pattern of R. eruciatus, the antemedial transverse fascia and the sutural band together forming the boundaries of four large ovate spots. There are, however, these points of difference between the two species : in R. crucifer the medial fascia is broader, the pubescence of which it is composed is shorter, more dense, and flavous ; the surface of the elytra is black, and not rufous ; and the surface of the four ovate spots is (not, as in R. eruciatus, glabrous and impubescent, but) clothed throughout with a short and thick squamose pubescence. Antenna1 robust, filiform, and fuscous throughout. Legs flavous, — the RHINOTJIETUS. 41 tarsi and base of the anterior tibiae being suffused with fuscous, and the posterior tibiae and tarsi mfo -fulvous. After much hesitation, I have satisfied myself that this ought pro- perly to be recognized as specifically distinct from B. cruciatus. At first sight it appears almost absolutely identical ; but the peculiar squamose pubescence on the elytra (which is represented in the other species by complete impubescence), combined with other points of difference, are too peculiar to admit of the one being constituted merely a variety of the other. The only example that I have seen of this species is in the cabinet of Mr. Fry, taken by him at Morro Queimado, Brazil. 6. Rhrnotmetus cyaneus. (Tab. II. fig. 2.) R. oblongo-ovatus, latus, robustus, subcylindricus, antice attenuatus, punctato-striatus, nigro-cyaneus ; capite elongato, longitudinali- ter (et ad basin oblique) carinato, nigro ; thorace elongato, antice constricto, subtiliter punctato, nigro, glabro ; elytris latis, robus- tis, ante medium transverse svfodepressis, punctato-striatis ; an- lennis rohtstis, Jiliformibus, nigrisj pedibus nigris. Long. corp. 2|-3 lin., lat. l|-lf lin. Oblong-ovate, broad, robust, attenuated in front, rounded at the apex, punctate-striate, glabrous, of a dark metallic-blue colour. Head elongated, produced anteriorly : from the angles of the labrum to the base of the antennae are two oblique, acutely-defined carina- tions ; between them a longitudinal keel-like ridge extends upwards to the base of the antennae ; this, between the eyes, is divided into two ridges (suboblique and then transverse), which terminate at the upper and inner margins of the eyes : eyes large, tolerably prominent, situated near the base of the head ; the surface (which is entirely occupied by these ridges) is impubescent and black. Thorax elon- gated (almost quadrate) ; the anterior angles much depressed and con- stricted ; the sides parallel and marginate ; at the base (when \iewed laterally) is an obsolete transverse shallow depression ; the surface (as seen under a high power) is finely and sparingly punctate ; black, glabrous. Scutellum triangular, black. Elytra considerably broader than the thorax, robust, convex ; a slight transverse antemedial de- pression extends obliquely xipwards towards the humeral angles, giving an appearance of prominence to the surface near the scutellum (in some examples this depression is less apparent) ; the surface finely punctate-striate throughout, the interstices being very finely punctured ; the colour is of a deep cyaneous hue, in some examples almost black. Abdomen black, sparingly clotbed throughout with 42 KHIN0TMETTJ8. pale fulvous pubescence. Antenna robust, filiform, black. Legs black, with slight griseous pubescence ; the claws bifid, or with an inner tooth produced nearly as far as (and occasionally of the same size as) the outer tooth. This brilliant species is in habits very active, using its wings in the hot sunshine with as much readiness almost as a Lebia. The species was tolerably abundant in the Organ Mountains in February 1857; it is represented in most cabinets. 7. Rhinotmetus assimilis. R. oblongo-ovatus, latus, robustus, antice attenuatus, punctato- striatus, purpureo-cyaneus, nitidus ; capite elongate, longitucli- naliter carinato, ad basin rugoso, nigro ; thorace quadrate, sub- elongate, antice constricto, ad basin punctate, nigro ; ehjtris latis, ovatis, robustis, punctato-striatis, purpureo-cyaneis ; antennis robustis, filiformibus, nigro-fuscis ; pedibus fuscis. Long. corp. 3 lin., lat. 1^ lin. Oblong-ovate, broad, robust, attenuated in front, punctate-striate, of a deep purple colour, glabrous. Head transverse, produced in front : from the angles of the labrum two obliquely transverse carinations extend in the direction of the base of the antennse ; between these is a medial longitudinal carination (hardly so abrupt as in B. cyaneus), produced upwards between the basal joints of the antennae, thence separating into two slightly diverging lines, is at last transversely deflected towards the upper and inner margins of the eyes; this marking is cousiderably less prominent than in B. cyaneus, and the surface above it, at the base of the head (which is rugose), is con- siderably broader : impubescent, black. Thorax quadrate (almost elongate) ; the anterior angles are much constricted and depressed ; the sides parallel and slightly marginate ; at the base (when viewed laterally) is a transverse depression (more distinct than in B. assi- milis and in B. depressus), terminating at the humeral angles in a somewhat deeper fovea ; the surface is subconvex and impunctate, except at the base and sides, where it is distinctly punctate (thus differing from B. cyaneus and B. depressus, which are impunctate throughout); impubescent, black. Scutellum triangular, black. Elytra broader than the thorax, ovate, robust, antemedially very slightly depressed, deeply punctate-striate, the colour being a rich deep pur- ple. Abdomen black, with griseous pubescence ; the segments are broad, extending at tolerably equal distances along the abdomen — not so much accumulated together as in B. cyaneus. Antennas robust, filiform, of a fuscous-black colour. Legs robust, clothed more RUIN0T.METUS. 43 or less sparingly with fine pale-fuscous pubescence, of a black colour throughout. Brazil. The only example of this species which I have seen (in the collec- tion of Mr. Baly) has the joints of the antennas shorter, and the whole length of the antennae very apparently shorter (in proportion to its body) than is the case in R. cyaneus. We shall be right, I think, in viewing this difference as sexual (the example of R. assimilis, with the shorter antennae, being of course a female) ; and if this be the case, we are able to gather further, by an inspection of the two insects, that in no other respects do the sexes of this genus differ, either in robustness of legs, or in the relative lengths of the posterior tibiae, or in the comparative size of the body : it is possible, however, that the male specimens may be found to have the transverse depression on the elytra more distinct and less obsolete than the females. R. assimilis is readily separated from all its congeners (to many of which it would seem, at first sight, to be very closely allied) by the distinct striation as well as by the rich purple colour of its elytra. 8. Rhiiiotmetus depressus. (Front, fig. 5.) B. oblongo-ovatus, robustus, subconvexus, antice attenuatus, punc- tatus, cyaneus; capite elongato, longitudinaliter carinato, ad basin ■punctato, nigro ; thorace ad apicem constricto, quadrato, angidis anticis obsoletis et depressis, ad medium longitudinaliter subtiliter striato, nigro ; elytris latis, subparallelis, ad medium oblique de- pressis, striato-punctatis ; antennis robustis, jiliformibus, nigris ; pedibus robustis, fusco-subpubescentibus, nigris, tibiis posticis fuseo suffusis. Long. corp. 2-i lin., lat. 1^ lin. Oblong-ovate, robust, subconvex, attenuated in front, punctate, shining, of a bright blue colour. Head transverse, produced in front : from the angles of the labrum two oblique carinations extend to the base of the antennae ; between these is a' medial longitudinal keel- like ridge, which diverges slightly into two subparallel raised lines, and then is further produced at right angles to the upper and inner surface of the eyes ; the eyes are large, subglobular, situated at some distance from the base of the head ; the base is deeply punctate : black, glabrous. Thorax broader than the head, quadrate, and constricted in front; the anterior angles much depressed and ob- solete ; the sides marginate ; at the base there is no trace of a trans- verse depression (as in R. assimilis and R. cyaneus) ; at the basal angles there is an obsolete group of punctures, and (when viewed obliquely) a faint medial longitudinal channel may be traced from 44 RHINOTMETUS. the apex to the base ; the surface, when seen under a high magni- fying power, finely punctate, glabrous, black. Scutellum small, tri- angular, black. Elytra robust, broader than the thorax, and sub- parallel ; from the antemedial suture a well-defined and somewhat deep depression extends obliquely upwards towards the humeral angles, giving an appearance of prominence to the surface near the scutellum (this depression is more distinctly impressed than in R. cyaneus and R. asshnilis): the surface is covered throughout with punctures arranged in the form of .striae ; these punctures are tolera- bly deep and apparent. Antennae robust, filiform, of a fuscous-black colour. Legs robust, clothed more or less sparingly with pale fuscous pubescence ; black, the posterior tibiae and tarsi being suffused with piceous. Closely alhed to the two former species ; but abundantly separated from either by its smaller size, by the distinct obliquely transverse depression on the elytra, and by the absence of any striae on the elytra. This species was taken by Mr. Gray and myself at Constancia, in the Organ Mountains, in January 1857. It has been taken by Mr. Fry and other collectors also in the neighbourhood of Eio Janeiro. 9. Rhinotmetus Waterhousii. R. oblongo-ovatus, elongatus, paralMus, nigro-cyaneus ; capite valde producto, ad apicem longitudinaliter carinato, glabrato, superne granidato, rufo-fusco ; thoraee elongato, antice rotundato, im- punctato, fusco ; elytris subparallelis,punctis veluti in striis ordi- nate, ante medium transverse depressis, nigro-cyaneis, nitidis ; antennis robustis, nigris ; pedibus nigris, femoribus nigro-fuscis. Var. A_. Capite et thoraee nigris. Long. corp. 2^ lin., lat. 1 lin. Oblong-ovate, subcylindrical, elongated, sides parallel, of a dark- blue colour. Head considerably produced; eyes large, prominent, extending laterally beyond the apex of the thorax ; from the upper lip a longitudinal acute ridge extends medially upwards to the inser- tion of the antennae, and there (above the insertion) terminates in a V-shaped fork ; surface of the head above finely granulated, darkly rufous. Thorax elongate, broader than the head, rounded and de- pressed anteriorly; sides slightly marginate ; surface with a very slight medial longitudinal fovea, impunctate, very darkly rufo- fuscous. Scutellum small, obscure, darkly fuscous. Elytra oblong, parallel, subconvex, with punctures arranged in the form of striae ; an antemedial transverse shallow depression extends obliquely to- wards the shoulders, giving the appearance of prominence to the RHIKOTMETUS. 45 surface near the scutellurn ; colour dark bright blue. Antenna ro- bust, filiform, black. Legs black, the femora being dark fuscous. The colour of the head and thorax of this insect is evidently sub- ject to slight variation ; occasionally it is, instead of dark fuscous, a perfect black. Distinguished at once by its much smaller size from all its con- geners with which I am acquainted. Brazil ; the Island of S. Paulo. In the collections of M. Deyrolle and Mr. Waterhouse. 10. Rhinotnietus ruficollis. B. oblongo-ovatus, robustus, antiee attenuates, punctato-striatus, niger ; capite transverso, producto, antiee carinato, super basin antennarum transverse foveolato, ad basin rugoso, rufo ; ihorace elongato, antiee subattenuato, ad basin depresso, impunctato, glabro ; elytris sat latis, punctata— striatis, purpureo-nigris ; an- tennis robustis, Jtliformibus, piceis ; pedibus robustis, piceis, femoribus posticis fused swffasis. Long. corp. 3^ lin., lat. 1^ lin. Oblong-ovate, robust, subcylindrical, attenuated in front, impu- bescent, punctate-striate, black. Read transverse, produced in front ; from the margins of the labrum two carinations extend obliquely towards the base of the antenna?, while between them an acute lon- gitudinal ridge is produced upwards between the insertion of the two basal joints, less prominent above the base, and terminating in a transverse fovea, which connects the upper and inner margins of the eyes (sometimes the upper portion of this medial ridge is ob- solete) ; eyes tolerably lai'ge and prominent, situated at some di- stance from the base of the head ; the surface at the base rugose, and the colour throughout darkly rufous. Thorax elongate, subattenu- ated and rounded in front ; the anterior angles obsolete and much depressed; the sides parallel at the base and marginate ; at the base is a broad transverse depression (sometimes represented by two subcircular depressions, one on either side of the medial line) ; the surface impunctate, rufo-glabrous. Scutellum triangular, im- punctate, and rufo-fuscous. Elytra considerably broader than the thorax, robust, ovate, deeply punctate-striate, impubescent, black (sometimes shaded with a purple hue). Antenna? robust, filiform, piceous. Legs robust, piceous, the posterior femora being suffused with fuscous. Brazil (the neighbourhood of Bio Janeiro). This species may be at once recognized among its congeners by its rufous prothorax, darkly cyaneous elytra, and piceous legs. 46 RHINOTMETUS. 11. Rhinotmetus cyanipennis. Rhinotmetus cyanipennis, Def. Cat. (1837) p. 407. archiepiscopalis, Chevr. It. oblongo-ovatus, subconvexus, antice elongatus, punctatus, niger, nitidus ; capite producto, antice carinato, inter ocidos foveolato, granidato, rufo ; thorace elongato, antice rotundafo et subat- tenuato, impunctato, rufo ; elytris paralleUs, punctis minutis (ad basin obsoletis), velut in striis dispositis, nigro-cyaneis ; anten- nis filiformibus, fuscis ; pedlbus fulvis. Long. corp. 3 lin., lat. 1^ lin. Oblong-ovate, robust, attenuated in front, punctate, black (gene- rally with a bluish hue), shining. Head produced (so that the insertion of the antenna? is placed about midway between the base and the apex) ; from, the labrum (which is light fulvous) to the insertion of the antennae is a longitudinal carination, on either side of which is another, oblique, and less distinct ; between the eyes, and above the insertion of the antennas, is an obsolete T-shaped, or sometimes Y-shaped, depression; surface impunctate, at the base granulated, the colour rufous. Thorax subelongate ; the anterior angles depressed and rounded ; the sides submarginate ; the surface impunctate (with a veiy high magnifying-glass, sparingly and finely punctured), rufous. Scutellum small, triangular, fuscous. Elytra broader than the thorax, robust, ovate, with punctures (which ax*e fine and sometimes even obsolete) arranged in the form of striae, ob- scurely pubescent, of a bright cyaneous colour. Antennae filiform ; the first joint being long, inerassated at the base, and deflected out- wards ; the second short, ovate ; the third narrower than those that follow, and shorter than the first ; the remainder of nearly the same breadth as the first ; tbe first and second rufo-fuscous, the rest fus- cous. Legs entirely fulvous throughout. This species differs from B. sulcicollis (to which, in general ap- pearance, it is closely allied) and also from R. rvficollis by the fine- ness of the punctuation and the absence of striae on the elytra (the punctures being minute and distinctly marked upon a bright glabrous ground), and also by the almost complete absence of any antemedial transverse depression on the surface of tbe elytra. A beautiful small variety was taken by Mr. Gray and myself at Constancia, January 1857, having the colour of the legs brightly rufous, the elytra of a purple-cyaneous colour, and the antennae rufous with the apex fuscous. A common species in the neighbourhood of Rio Janeiro. RHINOTMETUS. 47 12. Rhinotmetus sulcicollis. R. oblongo-ovatus, robustus, antice attenuates, punctatus, niger ; capite producto, ad apicem carinato, inter ocidos transverse foveo- lato, ad basin punctato, rufo; thorace elongato, antice coarctato, apud angulos basales obsolete depresso, ad medium longitudina- liter foveolato, impimctato, rufo ; elytris sat magnis, ante me- dium oblique depressis, striato-punctatis, nigro-cyaneis ; antennis filiformibus, robustis, fuscis, ad basin nigris ; pedibus rufis. Long. corp. 2\ lin., lat. 1^ lin. Oblong-ovate, robust, attenuated in front, punctate (more deeply than in the preceding species), glabrous, black. Head produced anteriorly : from the angles of the labrum is an oblique carination extending to the base of the antennae ; between these is a third, ob- solete and medial : above the base of the antennae is a well-marked longitudinal and also a transverse fovea, forming together the cha- racter of the letter T ; this fovea is the more apparent from having its sides raised : eyes large and prominent ; the surface at the base thickly and finely punctate ; the colour throughout is rufous. Tho- rax subelongate (almost quadrate), coarctate in front; the ante- rior angles much depressed and obsolete, the sides marginate ; near the basal angles is an obsolete depression, while a medial longitudi- nal fovea extends from the base of the head to the scutellum ; the surface is impunctate and rufous, glabrous. Scutellum triangular, impunctate, rufo-fuscous. Elytra broader than the thorax, robust, subparallel ; a broad antemedial depression extends obliquely up- wards towards the shoulders, giving a prominence to the surface near the scutellary angles ; the surface is covered throughout with punc- tures arranged in the form of striae — fine, yet not so obsolete as in R. cyanipennis ; the colour is black with a deep purple hue. An- tennas robust, filiform, fuscous, the three basal joints being rufous. Legs rufous throughout. This species is broader and more robust than R. elegantulus ; it is not striated (as to its elytra) like R. rujicollis ; the punctures on the elytra are coarser than in R. cyanipennis ; besides which distinc- tions, the longitudinal thoracic fovea sufficiently distinguishes it from all adjoining species. Found in the neighbourhood of Rio Janeiro. 13. Rhinotmetus elegantulus. R. oblongo-ovatus, subattenuatus, punctatus, niger, nitidus ; capite producto, antice carinato, inter ocidos transverse foveolato, punc- tato, rufo; thorace subelongato, antice constricto, apud angulos 48 HHINOTITETUS. basales leviter depresso, et ad medium longitudinaliter striato, rufo ; eh/tris subattenuatis, parallelis, striato-punctatis, ante medium oblique depressis, nigro-cyaneis ; antennis robustis, fili- formibus,fuscis ; pedibus fuscis, femoribus posticis rufo suffusis. Long. corp. 2\ lin., lat. 1 lin. Oblong-ovate, narrower than the preceding species, subparallel, finely punctate, black, shining. Head produced in front ; from the angles of the labrum an oblique carination extends to the base of the antennae, between which is a third, longitudinal and more obsolete : immediately above the base of the antennae two minute tubercular elevations are apparent when viewed laterally ; between these is a longitudinal fovea terminating in another, transverse, which meets the upper and inner margins of the eyes, thus forming together the character of the letter T : the surface is thickly punctate and rufous ; the eyes are tolerably large, and situated at some distance from the base of the head. Thorax subelongate, constricted and rounded in front ; the anterior angles much depressed and obsolete, the sides broadly marginate (more broadly than in the allied species) : near the basal angles is an obsolete depression ; while, medially, from the anterior margin to the base is a distinct longitudinal stria : the surface impunctate, rufous. Scutellum triangular, impunctate, fus- cous. Elytra broader than the thorax (more attenuated than in the adjoining species), parallel, with punctures arranged through- out in the form of striae ; these punctures are minute, on a smooth and o-labrous surface, resembling more closely than the others those of R. cyanipennis ; an antemedial transverse depression ex- tends obliquely upwards towards the humeral angles, giving an appearance of prominence to the surface near the scutellum; of a deep dark-blue colour. Abdomen ferrugineous. Antennas robust, filiform, fuscous. Leys fuscous, the posterior femora being suffused with rufous. Distinguished from all others by its more attenuated form ; it differs also from all, except R. cyanipennis, in the minute punctures of the elytra, while from this latter insect it may be separated (inter alia) also by its thoracic longitudinal fovea. From the Island of St. Paul's (on the coast of Brazil). 14. Ehinotmetus inornatus. R. oblongo-ovatus, niyro-fuscus, nitidus; capite anticeproducto, gra- nulato, inter oados bitubereulato ; thorace elongato, ad medium longitudinaliter subfoveolato, lateribus marginatis, cylindricis, im- punctato, nigro; elytris punetis velut in striis ordinatis, ad medium RtllXOTMETUS. 4i> oblique et transverse depressis ; antennis brevibus, nigro-fuseis ; pedibus nigris, posticis tibiis tarsisque fusco adumbratis. Long. corp. 2i lin., lat. 1 lin. Oblong-ovate, impubescent, dull dark red, shining. Head narrow, produced in front ; eyes large, somewhat prominent, situated at some little distance from the base of the head : from the labrum to the insertion of the antenna) (when viewed from above) is a central lon- gitudinal ridge ; this, at the base of the antenna?, divides itself into two diverging elevated lines (in form together resembling the letter V) ; at their upper extremities these oblique carinations terminate in two large and still more transverse tubercles which are situate at the upper and inner margin of the eyes : surface of the head granu- lated and black. Thorax somewhat elongate, with the lateral mar- gins anteriorly depressed, and therefore apparently somewhat con- stricted ; sides slightly marginate, subcylindrical ; from the apex to the base is an obsolete medial longitudinal channel ; surface shining, impunctate (under a higher power minute and irregularly distributed punctures are apparent, especially at the base), black. Scutellum very small, almost obsolete, depressed below the plane of the elytra, fuscous. Elytra parallel, slightly depressed, with rows of distinct punctures arranged in the form of stria? ; a transverse broad ante- medial depression is on either side inclined obliquely towards the shoulders (and also, less apparently, along the line of the suture to the scutellum), which gives a degree of prominence to the base. Antenna; filiform, short, black ; the first joint dilated at the apex ; second short, ovate ; third, fourth, and fifth nearly equal. Legs black, with the posterior tibia? and tarsi clouded with fuscous. Bi'azil. In the collection of M. Deyrolle. 15. Rhinotmetus Deyrollii. R. oblongo-ovatus, elongatulus, punctato-striatus, flavo-fulvus / capite producto, glabro; thorace subelongato, antice coarctato, ad basin depresso ; eh/tris subdepressis, parallelis ; antennis robustis, filiforrnibus ; pedibus robustis, flavo-fulvis. Long. corp. 2 lin., lat. | lin. Oblong-ovate, subparallel, slightly elongate in front, subdepressed, punctate-striate, impubescent, of a flavo-fulvous colour throughout. Head transverse, produced in front ; below the base of the antenna; is an obliquely transverse groove ; above the base of the antenna? and between the eyes are two tolerably large, distinct, tubercular elevations, rendered more apparent by an intervening fovea and an 50 RUINOTMETUS. obsolete depression above ; the surface is finely punctate, and at the apex glabrous ; eyes tolerably large, globose, situated at some little distance from the base of the head. Thorax elongate (almost qua- drate), the anterior angles much depressed and coarctate ; the sides parallel and marginate ; at the base is a broad transverse depression ; the surface throughout is finely punctate. Scutellum triangular, im- punctate. Elytra somewhat broader than the thorax, parallel, sub- depressed, punctate-striate (the punctures being deep, and the stria? (comparatively) obsolete) ; an antemedial depression extends ob- liquely upwards towards the humeral angles, giving a somewhat turgid appearance to the surface near the scutellum. Antenna'. robust and filiform. Legs tolerably robust, the globular inflation of the posterior claw being rufo-flavous. Brazil. 16. Rhinotmetus humilis. R. ohlonqo-ovatus, subcylindricus, fulvus, Iwido-pubescens ; capite producto, punctulato, rufo-fulvo ; thorace elongate, antice rotun- da to (etiamque ad latera), depresso, punctata ; elytris subelongatis, punctis minutis velut in striis ordinatis, lurido-pubescentibus ; antennis Jilif omnibus, sat robustis, fulvis ; pedibus fulvis. Long. corp. 2| lin., lat. 1^ lin. Oblong-ovate, somewhat depressed, fulvous, covered (throughout?) with a lurid squamose pubescence. Read elongated in front, de- pressed, pubescent ; eyes large, prominent. Thorax elongated, sides slightly marginate, contracted towards the head ; the anterior angles rounded ; surface plane, anteriorly depressed, finely punctate ; clothed throughout (as is the head) with a close, squamose, lurid pubescence. Scutellum almost obsolete. Elytra subelongate, subcylindrical, with shallow punctures arranged in the form of stria? ; covered (probably throughout) with close, squamose, lurid pubescence, which partially conceals an under- clothing of bright fulvous pubescence. Antenna; filiform, short, fulvous. Legs fulvous. The specimen from which this description is drawn is somewhat old and rubbed. Perfect specimens, I doubt not, will be found to be clothed throughout with a flavous pubescence, which is covered more or less with a fuscous and squamose pubescence. From the neighbourhood of Rio Janeiro. A single specimen, in the collection of Mr. Miers. 17. Rhinotmetus pallipes. R. oblongo-ovatus, subpdrallelus, subcylindricus, flavo-pubescens ; capite transverso, antice producto, granulato,nigro, ad basin sub- KHINOTMETUS. 51 puhescentl et rufo-ferrugineo ; thorace elongate, ad basin trans-' verse depresso, Jlavo-pubescenti ', nigra; elytrisparallelis,punctato- striatis, jiavo-pubescentibus ; antennis jtliformibus, pallide fer- rugineis ; pedibus pallide jiavis, tarsis an terioribus fusco svjfusis. Long. corp. 2-| lin., lat. 1^ lin. Oblong-ovate, subparallel, sub cylindrical, covered throughout with a pale yellow silky pubescence. Head transverse, produced broadly in front : from the sides of the labrum two oblique carinations extend upwards, joining one another immediately below the base of the antennae ; the transverse triangular plane which is thus formed is bisected by a medial longitudinal ridge : the eyes are large and pro- minent, situated at the base of the head : the surface is finely granu- lated, and pubescent at the base ; black, the base (between the eyes) being rufo-ferrugineous. Thorax elongated, the anterior angles attenuated and depressed ; at the base is a broad transverse depres- sion ; the surface (which is black) is clothed at the sides with a pale flavous pubescence. Scutellum triangular, fuscous. Elytra parallel, subcylindrical, punctate-striate, the striae being almost concealed by a thick silken pubescence of a pale flavous colour. Antennce robust, filiform (with a slight tendency to dilatation) ; the first joint is ovate and broad ; the second shorter ; the third and fourth fine, of equal length, and slightly longer than the first ; the rest (the fifth to the eleventh) robust, of equal breadth, and slightly shorter than the basal joint ; the colour pale ferrugineous. Legs pale flavous, the an- terior tarsi being suffused with fuscous. Brazil. In the collection of M. Chevrolat. 18. KMnotmetus flavidus. R. oblongo-ovatus, subparallelus, subeylindricus, jtavo-pubescens, falvo-ferrugineus ; capite brevi, prodxicto, subtiliter granulato ; thorace elongato, antiee rotundato, ad angulos basaels obsolete depresso, granulato ; elytrisparaUelis,punctato-striatis ; antennis jiliformibus, Jiavis ; pedibus jiavis. Long. corp. 2^ lin., lat. 1^ lin. Oblong-ovate, subparallel, subcylindrical, clothed throughout with a pale flavous pubescence, fulvo-ferrugineous. Head short, transverse, broadly elongated in front ; between the labrum and the base of the antennae is a transversely triangidar plane ; above the base of the antennae and between the eyes are two minute contiguous tubercles ; the eyes are prominent and black ; the surface is finely granulated, clothed at the inner margin of the eyes with pale flavous pubescence, in colour fulvo-ferrugineous. Thorax elongate, rounded and attenu- e 2 52 KHINOTMETtTS. ated in front ; the anterior angles depressed ; the sides marginate ; at the basal angles are two obsolete depressions of a triangular form ; the surface (which is finely granulated) is clothed throughout, but more distinctly at the margins, with a pale flavous pubescence. Scutellum email, almost obsolete. Elytra parallel, subcylindrical ; from the antemedial suture a shallow oblique depression extends upwards towards the humeral angles ; punctate-striate, the striae being almost entirely concealed by a fine silken flavous pubescence. Antenna? robust, filiform, flavous. Legs flavous throughout. This species is readily distinguished from pallipes by the arrange- ment of the depressions on the thorax and the different markings on the head, as well as by the colour of its pubescence. Brazil. In the collection of M. Chevrolat. 19. Rhinotmetus canescens. R. oblongo-ovalis, subdepressus, pubescens, jiavus ; capite producto ; thorace antice rotundato, elongato ; elytris punciato-substriatis, jla vo-pubescentibus ; antennis pedibusque Jlavis. Long. corp. 2i lin., kit. f lin. Oblong- oval, very slightly depressed, pubescent, flavous throughout. Head narrow, produced anteriorly, apparently impunctate, distinctly clothed with fine flavous pubescence ; eyes large, prominent, situate at the base of the head ; antennas at their base contiguous. Thorax considerably narrower than the elytra, elongated, subattenuated in front, with the anterior angles slightly rounded ; sides hardly mar- ginate, flavo-pubescent. . Scutellum small, triangular. Elytra with punctures arranged as strise (at the shoulder, and towards the margin, the striation is distinctly visible under the pubescence) ; the humeral angles distinct, but not prominent ; the surface is clothed, apparently throughout (but especially at the margins and base), with a fine, thick, velvet flavous pubescence. Antenna; filiform, with a tendency in the ultimate joints to become incrassated, flavous. Legs flavous. Brazil. In the cabinet of Mr. Baly. 20. Rhinotmetus nigricornis. R. oblongo-ovatus, subparallelus, antice attenuatus,punctato-striatus, niger ; capite producto, ad apieem carinato, granulato, nigro ; thorace quadrato, ad basin transverse depresso, impunctato, rufo ; elytris parallelis, punctato-striatis, nigris ; antennis robustis, Jiliformibus, nigris, ad basin fusco suffusis ; pedibus nigris, tibiis tarsisqw posticis ferrugineo sufflusis. Lung. corp. 2 lin., lat. | lin. TETRAGONOTES. 53 Oblong-ovate, subparallel, attenuated in front, punctate-striate, impubescent, black. Head produced in front ; from the apex to the base of the antennae is an obsolete longitudinal ridge, while imme- diately above their insertion are (when viewed obliquely) two lon- gitudinal tubercular elevations ; eyes large, situated at the base of the head ; the surface granulated and black. Thorax quadrate (subelongate), anteriorly rounded (more abruptly and less broadly than in preceding species, thus forming an obscure angle, and showing a tendency to assume the form represented in the following genus, Tetragonotes) ; the anterior angles much depressed, the sides broadly marginate, and the base transversely depressed ; this depression is di- stinct, and not obsolete as in other species : surface im])\inct&te, finely flavo-pubescent, rufous. Scutellum triangular, impunetate, black. Elytra broader than the thorax, parallel, punctate-striate, finely sub- pubescent, of a deep dead-black colour. Abdomen black. Antenna; robust, filiform, black, the basal joints being suffused with fuscous. Legs black, the posterior tibiae and tarsi suffused with ferrugineous. This species is an interesting connecting link between Rhinotmetus and the following genus, Tetragonotes. In facies it is abundantly a Rhinotmetus, but in the form of the thorax it approaches very near to the following genus. I captured a single example of this species at Petropolis (Organ Mountains), February 1857. Genus 6. TETRAGONOTES*. Corpus elongatum, depressum, subparallelum. Labrum constriction, transversum. Palpi maxillares elongati, art. 3° ovato. Palpi labiales subovati. Antennae filiformes, sat robustce. Caput breve, antice (in J proisertim) productum. Thorax elongatus, rectangularis, haud antice rotundatus, ad latcra tnarginatus et angidatus. Elytra subparallela, depressa, apicem versus subattenuata. Pedes : femora postica incrassata ; post, tibia? breves, subincurvake, juxta apicem haud dentatce, ut in genere Pliinotmeto, sed sinuatce. Labrum transversely subcircular, narrower than the head. Mandibles robust, with a slight tooth-like prominence at then- inner surface, concealed. Maxillary palpi (Tab. II. fig. 3 m) elongate, the second joint being * reroa ( = reffneus ; capite brevi, hand prod ucto, inter oeulos transverse foveolato, impunctato, glabro ; ihoraee quadrato, sed antea constricto, impunctato, nitido, nigro ; elytris latis, depressis, punctatis ; antennis robustis, ad apicem incrassatis, art. 1-4 Jlavis, 5-8 fuscis, 9-11 pallideflavis ; pedibus Jlavis, tarsis anterioribus fusco suffusis. Long. corp. If lin., lat. f lin. Oblong-ovate, broad, depressed, thickly punctate, of a dark olive- green colour which approaches to black. Head short, transverse, not produced between the eyes : between the eyes is an obsolete, trans- verse, irregular groove, which is connected medially with the base of the antennae by a fine longitudinal fovea ; the two, together, forming the impression of the letter T : the surface impunctate, gla- brous. Thorax quadrate in general form, but considerably con- stricted anteriorly; this constriction, commencing from the middle of the sides, gives the appearance of a very broad truncation of the anterior angles ; the anterior angles subacute, very much depressed ; the sides marginate, more distinctly near the posterior and anterior angles ; surface impunctate, shining, black. ScuteUum triangular, large, and distinct ; the sides slightly rounded, impunctate. Elytra broader than the thorax, depressed; the sides broadly marginate; the surface thickly and coarsely punctate throughout. Antenna? robust, incrassated towards the apex ; the first joint elongate, and dilated near the apex ; the second ovate ; the third as narrow as, but rather longer than, the second ; from the fifth to the eleventh short, and dilated ; in colour, the first to the fourth flavous (the first and fourth being slightly suffused with fuscous), the fifth to the eighth dark fuscous, the ninth to the eleventh very pale flavous. Legs flavous throughout, the anterior tarsi being suffused with fuscous. North America (Philadelphia). In the collection of M. Chevrolat. 64 EUTORNUS. Genus 8. EUTORNUS*. (Tab. II. fig. 8.) Labrum breve. Palpi maxillabes robusti, ehngati, art. 2'"1" quadrato, 3'i0 elongato, ad apicem subdilatato, ultimo conico. Palpi labiales ehngati, attenuati. Antennae breves, robustce, subincrassatai. Caput breve, transversum, defectum. Thorax latus, transversus, antiee valde cmarginatus et constrictus, ad latera marginatum ; rotundatus, fortiter punctatus. Elytra lata, robusta, rotundata, punctata. Pedes robusti ; femoribus anterioribus brevibus, tibiis ad basin in- curvatis ; femoribus posticis incrassatissimis, tibiis brevibus, sim- plicibus, tarsis attenuatis. Labrum short, subcircnlar. Maxillary palpi (Tab. II. fig. 8 m) robust, elongated, subdilated ; the first joint narrow and abbreviated ; the second almost quadrate, dilated at the apex ; the third longer, distinctly subdilated at the apex ; the terminal joint shorter and conical. Labial palj)! (Tab. II. fig. 8 n) elongate, slender. Antenna} (Tab. II. fig. 8 a) short, robust, slightly incrassated ; the first joint subelongated, dilated, and inflected outwards ; the second narrower, ovate ; the third shorter than the first, but narrower ; the following short, almost transverse, truncate, and gradually dilated towards the apex. Eyes tolerably large, situated at the base of the head, extending laterally not so far as the anterior angles of the thorax. Head short, transverse, deflected at right angles to the plane of the elytra, not produced in front. Thorax broad, transverse, broader than the head, in front distinctly emarginate, at the sides broadly marginate, and constricted towards the apex ; the base is subcircular (almost parallel to the anterior margin) ; the anterior angles considerably depressed and subacute ; the surface is rounded and deeply punctured. Scutellum broadly triangular, impunctate, glabrous, in the same plane as the elytra. Elytra broad, robust, somewhat broader than the thorax, rounded at the apex, punctate. Legs : the anterior femora broad, short. The tibia? are robust, short, incurved at their immediate base, and gradually thickened towards the apex, which is transversely truncate. The tarsi are * ev, bene ; ropvoi, convolutus. ETTTORNUS. 65 short and dilated ; the basal joint triangular, the breadth being equal to that of the base of the tarsi ; the second of similar form, but more minute ; the third broadly ovate, hardly bilobed ; from its centre proceeds the terminal joint, attenuate, incurved, slightly thickened towards the extremity, which terminates in a bifid claw, simple, and acute ; at its inner surface, near the base, abruptly thickened. The posterior femora are much incrassated and short, tapering gradually towards the apex. The tibice are short, straight, unarmed by any postical spur above the insertion of the tarsi, slightly thickened towards the apex, which is obliquely truncate, and armed on either side of the socket which receives the tarsus with a row of minute comb-like teeth. The tarsus short, of the same form as, but more attenuate than, the anterior; the ultimate joint terminating in a globidar inflation above the apical claw. 1. Eutornus Africanus. (Tab. II. fig. 8.) E. ovatus, latus, punctatus, impubescens, niger; capiteparvo, multum depresso, inter oculos carinato, fusco, ad basin rufo ; tJwrace lato, depresso, ant ice emarginato, ad, latera antice constricto et valde depresso, rnarginato, punctato, rufo-femigineo ; eh/tris latis, ro- bust is, punetatis, nigris, longitudinaliter flavo-bivittatis ; antennis brevibus, robustis, incrassatis, fuscis ; pedibus fuscis, femoribus 2>osticis ad basin rufo-jiavis. Long. corp. 2| lin., lat. 1^ lin. Ovate, broad, subspherical, punctate, impubescent, black. Head minute, transverse, depressed at right angles to the plane of the elytra, not produced : above the insertion of the antenna? is a trans- verse carination, extending obliquely upwards to the inner and upper margins of the eyes ; connecting this with the basal line is a longi- tudinal medial fovea : eyes large, subglobose, lateral, situated a little below the anterior margin of the thorax ; surface finely punctate, dark fuscons, the base being broadly rufo-ferrugineous. Thorax broad, transverse, depressed, considerably constricted in front ; the anterior angles rounded ; the anterior margin broadly emarginate, the sides marginate ; the surface deeply punctate, rufo-ferrngineous, suffused medially sparingly with fuscons. Scutellum broadly tri- angular, situated in the plane of the elytra, impunctate, black. Elytra broader than the thorax, robust, convex, rounded at the apex, deeply punctate throughout, black : a longitudinal rnfo-flavous band, accurately parallel with the suture, extends at a short distance from it on either side from the base to the apex ; at the apex it extends transversely to the margination, which also is (not so broadly) rufo-flavous. Antennae short, robust, incrassated towards the apex, G6 PH^DROMUS. darkly fuscous, the third and fourth joints being rufo-fuscous. Legs robust, fuscous, the base of the posterior femora being broadly rufo- flavous. A single example of this fine species was taken by the late Mr. Foxcroft, in the neighbourhood of Sierra Leone, and is in the cabinet of Mr. Baly. Genus 9. PIOEDROMUS*. (Tab. III. fig. 1.) Labkum transversum. Palpi maxillares: art. 2nd° ad basin attenuate, ad apicem dilatato et oblique truncato, 3''° elongato et contracto, 4'" minuto. Palpi labiales elongati. Antennae fih 'formes, sat robustce. Octjli globosi, ad latera capitis posit i. Caput breve, Tiaud antice productum. Thorax transversus, latus, ad latera angulatus, glaber. Elytra sidjparattela, depressa, elongata, ad apicem rotundata. Pedes: tarsis anterioribus latis, artic. 3'10 haud bifido ; femoribus posticis incrassatis, tibiis ad apicem longitudinaliter marginatis, tarsis attenuatis. Labrum transversely subcircular. Mandibles robust, short, with an inner obsolete tooth at their inner margin, concealed. Maxillary palpi (Tab. III. fig. 1 m) : the basal joint obsolete, obscure ; the second narrower at the base than the apex of the basal joint, dilated and broadly truncate at the apex, the length being- more than twice the greatest breadth ; the third more elongate, and narrower, subdilated towards the apex, and broadly truncate ; the apical joint is minute, subcorneal, considerably smaller at the base than the apex of the penultimate joint, the length equalling 11 of its breadth. Labial palpi (Tab. III. fig. 1 n) corresponding in form to the maxillary ; the second joint elongated, and gradually dilated towards the apex ; the apical joint minute, smaller at the base than the apex of the second joint, narrower and distinctly more elongate than the idtimate maxillary joint. Antennce filiform, sufficiently robust ; the basal joint elongate, in- curved outwards, and gradually dilated towards the apex, the apex broadly and transversely truncate ; the second much narrower than the first, short, and ovate; the third shorter than the first and * (paidpo/.ios, agilis. PH^DROMUS. 1)7 narrower, attenuated, but subincrassated near the apex ; the fourth and fifth are of the same form as, but shorter than, the third ; the sixth to the eleventh are shorter, more ovate, less truncate at the apex ; the apical joint being acuminated : the whole are sparingly clothed with fine pubescence, two or three longer and separate hairs being discernible at the apex of each joint. Eyes large and globose, situated at the base of, and at the sides of the head, distant, extending laterally somewhat beyond the anterior angles of the thorax. Head short, transverse, narrower than the thorax, not produced in front. Thorax transverse, broader than the head, anteriorly not emar- ginate ; the sides are finely marginate, and produced in front of the middle into a broad, well-defined obtuse angle, of the same form as, but more transverse than, the thoracic angle in the genus Boicus ; the surface is flattened throughout and subdepressed at the base. Scutellum almost obsolete, in the same plane as the elytra, im- punctate. Elytra subparallel, slightly broader than the thorax, depressed, rounded and not attenuated at the apex ; at the sides evenly marginate, in P. Waterhoasii finely punctate. Legs : the anterior femora tolerably robust, hardly incrassated. The tibia; are inflected downwards at their immediate base, and gradually incuiwed though their whole length, slightly dilated near the apex. The tarsi are broad; the first joint subtriangular, and of the same breadth as the apex of the tibia ; the second of the same form, but more minute ; the third broader than the first, transversely trian- gular, not bilobed: all three are densely clothed with a thick pubescence on their under sides and at their margins. The posterior femora are broadly incrassated and ovate, tapering gradually towards the apex. The tibia (Tab. III. fig. 1 g) is of the same form as the anterior, slightly incurved throughout, and gradually increasing in thickness towards the apex ; the hinder surface (when viewed posteriorly) is flattened and longitudinally marginate ; near the apex the outline of this margination is slightly sinuate (not dilated into a tooth, as in preceding forms), and extended to the extreme apex, so as to form the socket for the insertion of the base of the tarsus ; this socket is broadly truncate, terminating ultimately in two short claw-like teeth : the surface is clothed sparingly throughout with a bristle-like rigid pubescence. The posterior tarsus is attenuated; the basal joint is narrow, subdilated towards the apex ; the second of the same form as, but shorter than the first ; the third broad, subcircular ; the whole of these three joints being clothed at their apex (marginally and at their f 2 68 PH^DBOMUS. under sides) with a dense pubescence : from the centre of the third proceeds the base of the ultimate joint, which is long, attenuated, slightly inflected, and gradually dilated into a globular inflation com- pletely concealing from above the apical claw ; this claw is bifid, being armed at the base of its inner surface with a small tooth-like projection. This genus approaches, in the form of its thorax, to Tetragonotes and Octogonotes : from the latter it is separated at once by the elongated form of its palpi ; from the former it abundantly differs in its trans- verse and more distinctly hexagonal form of thorax. The parallel and depressed form of Phcedromus abundantly separates it from all other allied genera. 1. Phaedromus Waterhousii. (Tab. III. fig. 1.) P. oblongo-ovatus, depressus, parallelus, impubescens, niger ; caplte transverso, depresso, inter oculos transverse foveolato, tenue punc- tato, nigro ; thorace transverso, ad latera angulato, impunetato, fiavo, glabro ; elytris depresses, parallelis, punctato-striatis ; antennis rohistis, siibincrassatis, nigris ; pedibus jlavo-fuscis, femoribus anticis flavis, tarsisque posterloribus rufo-fuscis. Long. corp. 3 lin., lat. 1 lin. Oblong-ovate, depressed, parallel, impubescent, black, shining. Head transverse, very slightly produced, and depressed almost at right angles to the plane of the thorax ; immediately above the base of the antennae is a V-shaped carination, extending obliquely towards the inner margin of the eyes, and containing within it (when viewed under a high magnifying power) a minute longitudinal fovea, which connects it with a broad transverse and tolerably distinct depression extending between the upper margins of the eyes ; eyes large and prominent, extending laterally beyond the anterior angle of the thorax ; the surface finely punctate, glabrous, black. Tliorax broader than the head, transverse, the anterior angles obsolete, but subacute ; the sides (which are submarginate) are produced laterally into a distinct and prominent angle ; behind this angle, which is antemedial, the lateral margins slightly approach one another towards the base ; at the base is a broad but very shallow transverse depression, which extends obliquely upwards towards the anterior angles ; the surface is impunctate and glabrous, of a flavous colour. Scutellwm small, fuscous-black. Elytra slightly broader than the thorax, depressed, parallel, and rounded at the apex, punctate-striate, the striae being subobsolete ; at the shoulders (between the fifth and seventh striae) is a longitudinal depression; at the apex both the striae and the punctures are obsolete. Antenna? robust, subincrassated near the PHYSIMEBUS. 69 apex, black. Legs flavo-fuscous, the anterior femora being fiavous and the posterior tarsi rufo-fuscoiis. South Carolina, United States. In the collection of Mr. Waterhouse. Genus 10. PHYSIMERUS *. (Tab. III. figs. 2-7.) Bej. Cat. ed. 3, 1837, p. 407. Labbitm transverse subrotundatum. Palpi maxillabes elongati, art. 2ndo subovato, 3 ampliori. Palpi labiales elongati, subcylindrici. Antennae approximate)!, robustae, jiliformes aut subincrassatce. Caput breve, antice subproductum, plerumque inter oeulos tuberculatum aut foveolatum. Thobax quadratus aut elongatus, rarissime transversus ; angidis an- terioribus acutis, hand ut in Ilhinotmeto rotundatis. Elytba lata, subparallela, punctato-striata aut punctata. Pedes : femoribus anter. ad apicem dilatatis, tarsorum art. 1"'° trian- gidari,2ndo brevi, minuto ; femoribus postkis incrassatis, ovatis ; tibiis brevibus, apicem versus dilatatis, plerumque simplicibus(liaud ad marginationem calcaratis) ; tarsis brevibus et attenuatis. Labrum transversely subrotundate. Maxillary palpi (Tab. III. fig. 3m, fig. 4m) elongate, more or less subincrassated ; the basal joint is minute ; the second subovate, the apex being truncate ; the third joint is larger than the second, and also ovate ; the terminal joint is smaller than the others, and conical. The different species of this group seem, while exhibiting a manifest relationship in the general form of the maxillary palpi, to be subject to more variation inter se respecting them, than is found in the other genera : possibly they may be hereafter subdivisible into different sections. Labial palpi (Tab. III. fig. 3n, fig. 4n) elongate, subcylindrical ; the basal joint is, in outline, parallel ; the antepenultimate slightly dilated towards the apex, and the terminal joint elongate and atte- nuated. Antenna: tolerably approximate, situated under and between the inner margins of the eyes ; robust ; generally filiform, or, in a very few species, sitiincrassated ; the first joint is elongate, dilated and incurved outwards towards the apex ; the second short, narrower than the first, ovate ; the third as long as (and in the males some- what longer than) the first, attenuated, subincrassated at the apex ; * (pvais, natura ; ficpos, pars. 70 PHYSIHEKUS. the fourth and fifth of equal length, somewhat shorter ' than, and of similar form to, the third ; the sixth to the eleventh slightly more robust, and shorter. Eyes distant, situated at the base of the head, tolerably globose, extending laterally beyond the anterior angles of the thorax. Head short, depressed at oblique angles to the plane of the elytra, very slightly produced in front ; for the most part tuberculated or foveolated between the eyes. Thorax broader than the head ; quadrate or elongate, in hardly any instances transverse ; the anterior angles are considerably de- pressed and distinct (not rounded or obsolete, as in Rhinotmetus), and the sides are more or less broadly marginate. Scutellum triangular. Elytra broader than the thorax, robust, and rounded at the apex, generally punctate-striate, and clothed more or less with pubescence. Legs : the anterior femora subdilated towards the apex. The tibia} shorter than the femora, incurved downwards at the immediate base, slightly incrassated towards the apex, and broadly truncate. The tarsus is considerably shorter ; the first joint is triangular, attenuated at the base ; the second of the same form as the basal joint, but smaller ; the third broader than the first, transverse, and subcircular (very seldom bilobed): the under surface of these three joints is clothed and the margins of them densely fringed by a thick rigid pubescence : the terminal joint is elongate, attenuated at the apex, and slightly incurved as well as incrassated towards the apex ; the terminal claw is bifid, the inner margin of each tooth being armed at its inner surface near the base with a short and blunt tooth-like process. The posterior femora are thickly incrassated, subattenuated towards the apex, and generally (when seen transversely) of a regular ovate form. The posterior tibia is short, abruptly bent at the imme- diate base, gradually subdilated towards the apex ; the surface (when viewed from behind) is flattened, and on either side longitudinally marginate : this margination near the apex is not developed into teeth- like spurs, but is in most species simple ; occasionally, however, its outline is subsinuate : the socket at the apex (which receives the inser- tion of the tarsus) is armed at its margin by a series of minute teeth arranged like the teeth of a comb, terminating ultimately in a single abrupt claw. The posterior tarsus is short and attenuated ; the basal joint is elongate, and dilated towards the apex, where it is broadly truncate ; the second is narrower than, and of equal length to the first, attenuated, and truncated at the apex ; the third joint is minute and subcircular ; from the centre of the third proceeds the ultimate joint, which is elongated, subcurved, and dilated at its extremity into a I'HYSIMERUS. globular inflation, which entirely conceals from above the apical claw ; this claw is of the same form as the anterior. The only sexual distinction that I can trace in this group is the slightly elongated antenna? of the males : this is discernible especially in the third joint, which is rather longer than (instead of being equal in length to) the first. 1. Physimerus impressus. P. oblongo-ovalis, subdepressus, niger, nitidus ; capite brevi, leviter producto, ad basin tricanaliculato, granulate, rufo-ferrugineo ; thorace transverso, rectangulari, ad latera marginato, a posteriori transverse depresso, punctato, rufo-ferrugineo ; elytris sat latis, leviter striato-punctatis, ante medium transverse, et ad humeros oblique fossulatis, nigris, nitidis ; antennis Jiliformibus (sub- incrassatis), art. 1 et 2 fuseis, 3-5 Jlavis, 6-8 nigris, 9 et 10 jlavis ultimoque nigro ; pedibus anterioribus fuseis, fulvo-geni- culatis, posticis femoribus nigris pubescentibus, tibiis tarsisque ferrugineis. Long. corp. 2^ lin., lat. 1^- lin. Oblong-oval, slightly depressed, somewhat robust, black, shining. Head transverse, slightly produced ; at the base (at a sensible di- stance above the base of the antennae) three slightly raised ridges form together the figure of a trident — the outer ones being pro- duced obliquely to the inner superior margin of the eyes, the medial being continued to the basal margin ; these elevated ridges are lsevigate, the rest of the surface being granulated ; the colour is ferru- gineous, at the apex fulvous. Thorax transverse (almost quadrate) and rectilinear; the sides marginate; at the base are two slight postmedial transverse depressions ; punctate, ferrugineous. Scutellum triangular, fuscous. Elytra robust, broader than the thorax, with faint punctuation arranged irregrdarly as strice (this punctuation is obsolete at the apex); a deep antemedial depression extends ob- liquely upwards towards the base (reaching it at the sixth line of punctuation), and gives an appearance of prominence to the humeral and also the scutellary angles; black, shining. Antennce filiform, robust, slightly incrassated towards the apex ; the first and second joints are fuscous, third to fifth flavous, sixth to eighth black, ninth and tenth flavous, the apical joint black. Legs : the anterior femora black ; the tibiae fuscous, with their superior surface clouded with black ; the tarsi fuscous : of the postical, the femora are black, the tibiae and tarsi ferrugineous. Taken at Petropolis (Organ Mountains, Rio de Janeiro) by Mr. Frv, and in that gentleman's cabinet. 72 PHYSIMERUS. 2. Physimerus vittatus. Physimerus vittatus, Dej. Cat. (ed. 3) p. 407 (cmctore Chevr. Coll.). P. oblongo-ovatus, subdepressus, flavus ; capite brevi ; ihor ace trans- verso, ad latera marginato, ad basin depresso, punctata ; elytris paraMelis,punctato-striatis,fidvis,quatuor vittis flavis a humeris usque ad apicem ; antennis elongatulis, fuscis ; pedibus flavis. Long. corp. 2J lin., lat. 1 lin. Oblong-ovate, somewhat depressed, parallel, snbpubescent, flavous. Head short, transverse, slightly depressed ; eyes black, somewhat prominent, distant, and extending at their outer margin laterally as far as the line of the thorax ; between the eyes is a transverse de- pression (which varies somewhat as to its breadth in different ex- amples) ; the upper and posterior surface of the head thickly punc- tate. Thorax transverse ; the sides marginate and slightly convex ; the anterior angles distinct and subacute ; the surface complanate, thickly punctured, with a broad transverse basal depression extending upwards and outwards towards the anterior angles. Scutellum small, triangular. Elytra punctate-striate, darkly fulvous, with four lon- gitudinal bands extending from the shoulders to the apex, and clothed with (apparently formed by) a covering of bright silky flavous pu- bescence ; these bands are generally equal in breadth to the spaces which separate them, and are parallel, not to the striae, but to the suture : throughout the whole surface of the elytra are distributed long, distinct, upright hairs. Antennae somewhat fine and elongate, fuscous ; first joint thick and dilated ; the second short and ovate ; the fifth the length of the first ; the fourth longer than the fifth, and the third than the fourth. Legs flavous, with the upper surface more or less marked with shadings of brown. Closely allied to quatuor-lineatus, but separated from it by the dif- ferent arrangement of the depressions on the head, and the absence of any marking along the suture. Brazil (in the province of Bio Janeiro). In the collections of Mr. Fry, M. Chevrolat, and the Bev. H. Clark. 3. Physimerus quatuor-lineatus. Octogonotes quadrilineatus, Regne Anim. 1829, Guer. Mencville, (vol. v. p. 154). P. oblongo-ovatus, subparallelus, subtiliter pubescens, pallide flavus ; capite brevi, sabelongato, inter oculos in forma crucis foveolato, impunctato ; thorace transverso, lato, ad basin subdepresso ; elytris punctato-striatis, vittis duabus longitudinalibus, hac inter strlas 2 et 4, brevi, ilia apud marginem a humero ad apicem ; antennis art. 1 et 2 flavis (reliqui desunt) ; pedibus flavis. Long. corp. 2| lin., lat. 1£ lin. PHYSIMERUS. 73 Oblong-ovate, subparallel, very finely pubescent, of a pale flavous colour. Head short, transverse, subelongated in front, and reflected downwards (at the insertion of the antennae) at a right angle to the plane of the elytra ; between the eyes is a distinct transverse groove, and crossing it at right angles is another (longitudinal and medial), extending from the insertion of the antennae to the base ; the surface impunctate : eyes tolerably prominent, black, situated at the base of the head. Thorax transverse, extending beyond the outer margin of the eyes ; the anterior angles depressed and subacute, but almost obsolete ; the sides marginate, slightly dilated medially ; at the base is a transverse depression ; the surface is impunctate and (when viewed under a high power) very finely flavo-pubescent. Scutellum small, triangular, impunctate. Elytra subparallel, punctate- striate ; between the second and the fourth striae is a longitudinal band of darker fulvous parallel to the suture, and which does not extend to the apex ; along the margination is another, narrower band, which extends from the shoulders in a somewhat irregular line to the apex ; these four longitudinal lines are glabrous, the rest of the surface being clothed with a fine pale flavous pubescence. Antenna? : the first two joints flavous (the rest are wanting). Legs flavous throughout. Brazil. In the collection of M. Chevrolat. This species approaches very nearly to vittatus ; it differs, how- ever, in the form and position of the longitudinal markings on the elytra : in quatuor-lineatus these occur from the second to about the fourth striae, and again along the margination ; while in vittatus the medial marking is along the sutural line, and the exterior marking, not along the line of margination, but between the fourth and sixth striae : the form of the depressions on the head also suffi- ciently distinguishes it. 4. Physimerus virgatus. P. oblongo-ovatus, lotus, robustus, pubescens, fuscus ; capite elonga- tulo, supra basin antennarum granulato, nigro ; thorace trans- verso, rectilineari, apud angidos posticos, etiamque longitudina- liter ad medium foveolato, nigro ; elytris latis, punctato-striatis, Jlavo -pubescent ibus, quatuor-lineatis ; antennis ad apicem in- crassatis, nigris ; pedibus piceis. Long. corp. 2 lin., lat. 1 lin. Oblong-ovate, broad, robust, very finely pubescent, fuscous. Head short, transverse, elongate in front ; between the upper part of the labrum and the base of the antennae is a triangular depressed and gla- brous plane ; above the base of the antennae and between the eyes the 74 PHYSIMERUS. surface is irregularly and coarsely granulated ; the colour black : eyes tolerably large, situated at the base of the head. Thorax transverse, broader than the head, but much narrower than the elytra, rectan- gular, rectilinear ; the anterior angles depressed ; the sides subraar- ginate ; at the basal angles is a broad, distinct and tolerably deep depression, while, medially, a longitudinal fovea extends from the anterior margin to the base ; the surface (when viewed under a high power) is clothed throughout sparingly with short pale fulvous pu- bescence ; the colour black. Scutellum triangular, fuscous. Elytra much broader than the thorax, robust, punctate-striate, clothed throughout with a fine and thick brightly-flavous pubescence : this pubescence is broken by several bands of piceous colour, extending from the shoulder to the apex ; the first (which is between the suture and the first stria) extends nearly to the apex ; the second (between the second and third striae) does not reach the apex ; the third (between the fourth and fifth stria?) extends only two- thirds of the length of the elytra ; the fourth (between the sixth and seventh stria?) is longer than the third, but shorter than the second; the fifth (between the eighth and ninth stria?) is as long as the second, becoming somewhat obsolete as it approaches the apex ; and, lastly, the line of margination which extends from the shoulders to the apex ; these intermediate (with the sutural and marginal) lines are all of equal breadth. Antennae tolerably robust, incrassated to- wards the apex, black. Legs piceous throughout. Columbia ; Bogota. Taken by M. Parzudaki. In the collection of M. Chevrolat. 5. Physimerus labialis. P. oblongo-ovatus, subattenuatus, puhescens, brunneus ; capite brevi, transverso, ad basin antennarum T foveolato, granulato, impu- bescenti ; thorace transverso, ad basin oblique depresso, subpunc- tato, sparsim pube vestito ; elgtris subparalhlis, punctato-striatis, pubescentibus ; antennisjiliformibus,fuscis ; pedibus Jiavis,fusco suffusis. Long. corp. 2 lin., lat. 1 lin. Oblong-ovate, subattenuated, very finely pubescent, of a tawny- brown colour throughout. Head short, transverse, very slightly produced in front ; between the labrum and the base of the antenna? is a transverse plane (impunctate and of a pale rufous colour) ; im- mediately above the base of the antenna? are two minute tubercles, giving distinctness to a transverse and to a longitudinal fovea, which form, together, the character of the letter T ; the surface throughout gramdated and impubescent. Thorax transverse (almost quadrate) ; PHYSIMEKUS. 75 the anterior angles depressed, the sides marginate ; at the base is a transverse depression which extends obliquely upwards towards the humeral angles ; the surface is finely punctate, sparingly clothed throughout with pubescence. Scutellum minute. Elytra subparallel, slightly broader than the thorax, and attenuated at the apex ; punc- tate-striate, and clothed throughout with a very fine and sparingly .distributed silken pubescence. Antenna) filiform, fuscous. Legs fla- vous, suffused irregularly with fuscous. Mexico. In the collection of M. Chevrolat. 6. Physimerus ambiguus. (Tab. III. fig. 2.) P. oblongus, subdepressus, subparallelus, robustus, nigro-cyaneus ; capite brevi, rufo ; thorace transverso, ad basin depresso, punc- tato, rufo; elytris punctatis (striispene obsoletis) ; antennis jili- formibus, robustis, fuscis, ad basin mifis ; pedibus nigris. Long. corp. 2 lin., lat. | lin. Oblong, slightly depressed, subparallel, robust, of a dark metallic- blue colour. Head short, depressed, very slightly elongated; be- tween the eyes is a transverse canaliculation, the extremities of which are deflected upwards towards the upper and inner margins of the eyes ; this canaliculation is shallow and almost obsolete : eyes slightly prominent, large, and distant; maxillary palpi dark fuscous; surface of the head roughly punctate and rufous. Thorax rectan- gular, transverse (almost quadrate) ; the sides are slightly marginate and (when viewed laterally) considerably depressed in front; the surface of the thorax subconvex, with an obscure transverse basal de- pression, coarsely punctate and rufous. Scutellum triangular, black. Elytra distinctly punctate, the punctures being arranged in the form of striae (the striae themselves being almost obsolete, not so distinct as in P. agilis), smooth, of a metallic bright blue, clothed very sparingly throughout (more distinctly at the apex) with pubescence ; an ante- medial transverse and shallow depression (which extends upwards on either side towards the humeral angles) gives an appearance of prominence to the shoulders. Antennce filiform, fuscous, with the base of the terminal joints rufous ; the first joint dilated towards its extremity and curved outwards ; the second short, oval ; the third, fourth, and fifth attenuate; the sixth to the eleventh with a slight tendency to dilatation. Legs black, with the base of the tarsal joints and the posterior apical claw rufous. There are apparently two forms of this insect : one (the typical form), in which the thorax is transverse (almost quadrate), and the 76 PHYSIMERU3. length of the insect 2-2\ lin. ; the other, in which the thorax is quadrate, and the length If lin. At first sight they appear to be decidedly different species ; more careful examination, however, fails in detecting any real distinctive characters except these ; and these fail as a specific distinction from the fact that there are intermediates both in size and form, and that the quadrate thorax and the smaller size are not always found together in the same example. Apparently a common insect in Brazil. In the cabinets of Messrs. Fry, Baly, Gray, and the Eev. H. Clark. Examples of this species were captured by Mr. Gray and myself at Constancia (the English boarding-house of Mr. Heath, Organ Mountains), January 1857. 7. Physimerus agilis. P. oblongus, subparcdlelus, robustus, niger ; capite transverso, sub- elongatuio, punctato, fusco; ihorace quadrato, rectcmgulari, ad basin obsolete transverse depresso, punctato, rufo-testaceo ; elytris sat latis, subparallelis, punctato-striatis ; antennis jiliformibus, robustis ; pedibus rufis, fusco suffusis, femorlbus posticis nigro- ftbscis. Long. corp. 2\ lin., lat. 1 lin. Oblong, somewhat depressed, subparallel, robust, of a greenish- black or black colour. Head transverse, short, depressed, hardly elongated in front ; between the eyes (extending upwards on either side in a semicircular form towards their upper and inner margins) is a transverse shallow fovea, which is connected medially by a longitu- dinal channel with the space between the insertion of the antenna? ; eyes distinct, slightly prominent and distant, situate at the base of the head ; surface of the head punctate and fuscous. Thorax qua- drate, rectangular ; sides slightly marginate, and (when \iewed la- terally) gradually deflected from tbe humeral angles to the outer and lower margins of the eyes ; at the base is an almost obsolete trans- verse depression ; the surface is punctate throughout and rufo-testa- ceous. Seutellum triangular, fuscous. Elytra tolerably broad and subparallel, distinctly punctate-striate, with a broad and obsolete antemedial transverse depression, very darkly fuscous or nearly black. Antennae filiform, short, robust ; the first joint dilated and slightly deflected outwards ; the second short and ovate (but somewhat longer than in P. ambiguus) ; the third narrower than the others and longer than the first : a tendency to dilatation is evident in the ultimate joints. Legs rufous, marked more or less on their upper surface with a darker shade of brown ; posterior femora very darkly fuscous; on the inner margin of the claws the spur is large and distinctly visible ; the bladder-like inflation of the posterior claw darkly and brightly red. FHYSIMERUS. 77 There is a great similarity as to general appearance between this insect and P. ambiguus ; the darker and less brilliant colour, as well as the very distinct striation on its elytra (and the rufous colour of its anterior legs), abundantly separate the species. I captured a single specimen of this insect at Constancia (Organ Mountains), January 1857. 8. Physimerus revisus. P. oblongo-ovatus, impubescens, nigro-cyaneus ; capite brevi, ad basin antennarum T impresso, punctulato ; thorace quadrato, rectangulari, ad basin constricto et transverse depresso ; elytris suhparallelis, striato-punctatis, impubescentibus ; antennis Jili- formibus, nigris ; pedibus nigris. Long. corp. 2^ lin., lat. 1-L lin. Oblong-ovate, impubescent, of a bright dark cyaneous colour. Head transverse, slightly produced ; above the labrum is a trans- verse triangidar subdepression ; immediately above the insertion of the antenna? (when viewed in front) is a longitudinal channel, bi- secting at its upper extremity a transverse fovea, which form to- gether the character of the letter T ; eyes situated at the base of the head; the surface is finely and very sparingly punctate, flavous. Thorax quadrate, rectangular, the sides slightly constricted towards the base and marginate ; the base transversely subdepressed ; the surface impubescent, sparingly and very finely punctate, more thickly towards the base. Scutellum triangular. Elytra subparallel, with distinct punctures arranged in the form of striae, impubescent, gla- brous. Antennas filiform, black. Legs black. Brazil. In the collection of M. Chevrolat. This species may be separated from P. ambiguus, P. agilis, and other allied species by its total absence of piibescence, and also of striw on the elytra ; it differs also materially in the form of the head, and in the form, markings, and relative size of the thorax. 9. Physimerus luteicollis. P. ovalis, depressus, subjmbescens, fuscus ; capite brevi, haud pro- ducto, luteo, punctato, ocidis magnis, distantibus ; thorace qua- drato (angulis acutis), ad basin transverse depresso, punctato, luteo; elytris punctato-striatis, subpubescentibus ; antennis fiiscis (ad basin articidorum fiavis) ; pedibus fiavis, femoribus tibiisque jjosticis elongatulis. Long. corp. If lin., lat. £ lin. Oval, slightly depressed, subparallel, clothed throughout with a 78 PHYSIMERTJS. fine and indistinct ashy pubescence, fuscous. Head short, transverse, and (when viewed laterally) very slightly produced ; the eyes are large, prominent, and distant ; between the eyes is a distinct trans- verse groove, inclining obliquely upwards in the chVection of the upper and inner margins of the eyes, and connected by a medial horizontal fovea with the insertion of the antenna? ; surface of the head thickly and coarsely punctured or granulated, flavo-rufous. Thorax quadrate (with the anterior and posterior angles distinct and subacute) ; sides marginate, slightly constricted towards the base, subpubescent, flavo-rufous. Scutellum triangular, fuscous. Elytra indistinctly but broadly punctate-striate, obsoletely pubescent; a slight antemedial depression gives an appearance of prominence to the shoulders ; fuscous. Antennas filiform, somewhat elongate ; the first joint broad, and dilated near the apex ; the second short, ovate ; the third, fourth, and fifth of nearly equal length, and thinner than the basal or apical joints ; the first, second, and third flavous, the rest fuscous. Legs slightly pubescent, flavous throughout. Corcovado. Rio de Janeiro. I know only of one example of this species, in the cabinet of Mr. Fry. 10. Physimerus inornatus. P. oblongo-ovatus, subconvexus, parallelus, niger ; capite brevi, punctato, rufo ; thorace transverso, ad basin leviter constricto etiamque late depresso, punctato, ad basin flavo-pubescenti ; elytris parallelis, punctato-striatis, subtiliter pubescentibus, nigris ; an- tennis filiformibus, nigris ; pedibus jiavis. Long. corp. 2 lin., lat. f lin. Oblong-ovate, parallel, subconvex, black, pubescent. Head short, almost vertical ; eyes large, prominent, extending laterally as far as the margin of the thorax ; between the eyes and above the insertion of the antenna? is an obscure obliquely-transverse depression ; surface finely punctate, rufous. Thorax transverse (almost quadrate), slightly constricted at the base ; the anterior angles are depressed, the sides slightly marginate ; at the base is a broad transverse depression ; the surface is very finely punctate, at the base flavo -pubescent, rufous. Scutellum oblong, triangular, black. Elytra parallel, coarsely punctate- striate, clothed throughout with very fine ashy pubescence, black. Antennas filiform, black. Legs flavous throughout ; the globular in- flation of the posterior claw bright fulvous. This species differs from P. minutus not only in its larger size, but in the form and clothing of the thorax ; it is less constricted at the PHYSIMERUS. 79 base, and more distinctly pubescent : from otber species it will be readily distinguished by the distinct colour of its elytra. From the district of the Amazon. In the collection of Mr. Bates. 11. Physimerus minutus. P. oblongus, ovalis, depressus, parallelus, niger ; capite brevi, im- punctato, rufo ; thorace brevi, transverso, ad basin constrieto et depresso ; elytris subcylindricis, punctato-striatis, pallide pubes- centibus ; antennis filiformibus, nigris ; pedibus jiavis, posticorum femorum apicibus fuscis. Long. corp. If lin., lat. f lin. Oblong, oval, depressed, parallel, black. Head short, hardly pro- duced; eyes large, prominent, extending beyond the line of the thorax; between the eyes and above the base of the antennse is a depression in the form of the letter T ; surface impunctate, rufous. Thorax small, transverse, considerably constricted at the base ; the anterior angles much depressed, and concealed below the outer margin of the eyes ; the sides are slightly marginate ; at the base is a broad trans- verse depression ; the surface is flavo-pubescent and rufous. Scutellum triangular, black. Elytra broader than the thorax, subelongated, parallel, coarsely punctate-striate, black, clothed throughout with fine ashy pubescence. Antenna filiform, black. Legs flavous throughout ; the tips of the posterior femora fuscous. This species differs from P. luteicollis in its black elytra, by its more transverse thorax, and by its smaller size ; from P. inornatus by its impunctate head, by the fineness, as well as ashy (instead of flavous) pubescence on the elytra, and also by its smaller size. From the Amazon district. 12. Physimerus obscurus. P. oblongo-ovatus, parallelus, subpubescens ; capite brevi, elongatido, inter oculos longitudinaliter foveolato, gramdato, rufo ; thorace elongato, subcylindrico, angulis anterioribus subacutis, ad latera marginato, ad basin depresso et subcoarctato, granulato, rufo- ferrugineo ; elytris punctis crebris in striis ordinatis, transverse complanatis, nigris ; antennis fil if ormibus, art. 1-4 ferrugineis, eastern fuscis ; pedibus fuscis, tarsis tibiisque posticis ferrugineis. Long. corp. 1^ lin., lat. g-f lin. Oblong-ovate, parallel, subpubescent, black. Head short, slightly elongated and compressed in front ; eyes large and prominent ; im- mediately above the base of the antennse is a short abrupt longitudinal 80 PHYSIMEKTJS. fovea; the surface is granulated and rufous. Thorax elongated, rectangular, subcylindrical ; the anterior angles depressed, the sides marginate ; at the base is a transverse depression, giving a rounded form to the anterior disc ; the surface granulated and rufous. Scutellum triangular, black. Elytra parallel, with broad and large punctures arranged in the form of striae ; a slight oblique depression is ap- parent antemedially near the suture ; the surface is obscurely and finely pubescent, of a black or bluish-black colour. Antenna; fili- form, tolerably robust, the joints (the second is the shortest) being nearly equal in length ; first to fourth ferrugineous, fifth to eleventh fuscous. Legs fuscous ; the posterior tibise and tarsi ferrugineous. Morro Queimado (Brazil). In the collection of Mr. Fry. 13. Physimerus fascicularis. P. oblongo-ovatus, parallelus, glaber, niger ; capite subproducto, ad basin antennarum transverse foveolato, punctulato, nigro (ad basin fulvo) ; thorace transverso, lateribus ad angulos posteriores et anteriores obsolete coarctatis, punctato, fiavo, antice fuscato ; elytris parallelis, punctis (ad apiceni obsoletis) in striis ordinatis, nigris, ad medium transverse vitta ferruginea fasciatis ; antennis flliformibiis, art. 1-5 fiavis, 6-8 piceis, 9-11 testaceis ; pedibus jtavis. Long. corp. 2 lin., lat. f lin. Oblong-ovate, subelongated, parallel, glabrous, black. Head short, depressed, slightly produced in front ; below the base of the antennas is a broad triangular transverse depression ; immediately above the antennae (between the eyes) is a transverse fovea, which is bisected at its upper margin by a short longitudinal fovea, giving together the appearance of the letter T inverted ; eyes large, prominent, ex- tending laterally as far as the anterior angles of the thorax ; the surface finely punctate, black, — the base (from the insertion of the antennas to the line of the thorax) being fulvous, the margins behind the eyes black. Thorax transverse, the anterior angles depressed and subacute ; the sides marginate and (close to the anterior and posterior angles) obsoletely coarctate ; surface punctate, especially at the sides and base, flavous (suffused with fuscous along the line of the apex). Scutellum triangular, ferrugineous. Elytra parallel, with punctures (which are more obscure towards the suture and apex) arranged in the form of striae, an appearance of striation being per- ceptible towards the marginatum; impubescent, black, divided medially by a broad transverse ferrugineous band. Antenna? filiform (with a slight tendency to dilatation towards the apex) ; the first joint broad and dilated at the apex, and of the same length as the fifth and sixth ; PHYSIMKUl's. 81 the second short, ovate ; the third much longer than the fourth or first ; the first to the fifth flavous (the first and second being suffused with ferrugineous) ; the sixth to the eighth piceous (the base of the sixth being ferrugineous) ; the ninth to the eleventh testaceous. Legs flavous, the terminal joint of the anterior tarsi (which is more broadly bilobed than in the allied species) fuscous, and the apex (on the outer side) of the posterior femora suffused with fuscous. Petropolis (Organ Mountains, Rio Janeiro). In the collection of Mr. Fry. 14. Physimems trivialis. P. oblongo-ovatus, parallelus, suipubescens, ferrugineus ; capite brevi, into' oeulos transverse foveolato, punctata ; thorace trans- verso, rectilineari, subtiliter punctata ; elytris punctato-striatis ; antennisfiJiformibus, nigris ; pedibus nigris. Long. corp. l-J lin., lat. |— J lin. Oblong-ovate, somewhat depressed, subparaUel, of a dull ferru- gineous colour throughout. Head short, transverse, slightly depressed in front ; eyes large, prominent, distant, their extreme lateral margin extending as far as (or even slightly beyond) the sides of the thorax : between the eyes is very faintly apparent a fovea in the shape of the letter T ; this fovea is almost obsolete : the surface of the head di- stinctly punctured. Thorax transverse (almost quadrate), rectangular, rectilinear ; the anterior and posterior angles distinct and subacute ; surface somewhat depressed, very finely punctate throughout, and (under a high power) finely though sparingly pubescent. Scutellum triangular. Elytra distinctly punctate-striate, subpubescent. An- tenna; filiform, with a distinct tendency to incrassation towards the apex ; the first joint dilated, and inflected outwards ; the second short, ovate ; the third and fourth of nearly equal length ; black. Legs black. I have only seen a single specimen of this insect, from St. Paul, Brazil. In the cabinet of M. Deyi'olle. 15. Physiinerus juvencus. (Tab. III. fig. 3.) B.M. Physimems juvencus, Dej. Cat. (ed. 3) p. 407 (auct. Chevr. Coll.). P. ( 3 ) oblongus, subdepressus, robustus, subpubescens, niger ; capite brevi, inter ocidos transverse depresso, punctato, rvfo-ferrugineo ; thorace transverso, subtiliter pubescenti, punctato, fiavo ; elytris robustis, subcylindricis, punctato-striatis, nigris, vittis duabus a humeris usque ad apiceni albo-pubescentibus, hac ad suturam, hac ad marginem ; antennis JiJiforinibus, ferrugineis, art. 4—8 fuscis ; pedibus jlavis. 82 PHYSIMEKTJS. Var. A ( c? ). Ehjtris fuscis vel cyaneo -fuscis, vitta ad suturam jiava. Var. B (jplerumque § ). Ehjtris fere fulvis vel flavo-fulvis, haud ad suturam vel marginem vittatis. Long. corp. 21 lin., lat. f-1 lin. Oblong, subdepressed, robust, somewhat pubescent, black. Head short, transverse, deflected anteriorly, with a shallow transverse de- pression extending from the insertion of the antennae to the upper and inner margins of the eyes ; eyes slightly prominent, distant, ex- tending laterally as far as the anterior angles of the thorax ; surface of the head thickly and coarsely punctured, rufo-ferrugineous. Thorax transverse ; the sides parallel and marginate : when viewed laterally, the margin ation is deflected from the humeral angles to the outer and posterior margin of the eyes ; at the base is a subobsolete fovea, which is expanded on either side into a more distinct and broader depression : surface of the thorax clothed with very fine pubescence (invisible except under a high power of the microscope), thickly but finely punctured, flavous. Scutellum triangular, apparently clothed with very fine cinereous pubescence. Elytra robust, subcylindrical, punctate-striate, black, with a metallic tinge (in certain lights) of blue : on either side of the suture, from the scutellum (where they are confluent), are two regular longitudinal bands, separated from the suture by a single stria, slightly increasing in breadth towards the centre, and terminating in a point (at a greater distance from the suture) near to the apex ; these bands are formed by a fine thick velvet pubescence of pale cinereous colour, the surface of the elytra below the pubescence being more or less distinctly luteous : from the humeral angle, parallel to, but not approaching the margin, is another, more obsolete band of pubescence, which reaches to, and clothes the whole of, the extreme apex of the elytra ; this pubescence is of the same colour as that of the sutural band, but on a bright black instead of a luteous ground. Antennce filiform, sufficiently robust, ferru- gineous, with the fourth to the eighth joints fuscous ; the first joint elongated, inflected outwards, and dilated towards its apex; the second short, ovate; the third and fourth of nearly equal length, the latter being rather longer than the first. Legs flavous, with the bladder-like inflation on the posterior claw bright red. The above description is taken from a male specimen (the third and fourth joints of the antennas being distinctly more elongated as well as attenuated than in other examples). The species is evidently subject to great variation in colour : other examples of males have the elvtra much less decidedly black, with the sutural band of pubescence l'llYSJMERUS. 83 flavous instead of ashy-grey ; the females (for the most part) have the elytra entirely flavous, with very faint traces, if any, of longitu- dinal bands of pubescence. Amazon River ; Ega. Taken by Mr. Bates. In the collection of the British Museum and other cabinets. 16. Physimerus ephippium. (Tab. III. fig. 4.) B.M. P. ovalis, elongatus, ferrugineus, impubescens ; capite brevi, inter oculos transverse et oblique foveolato, punctata, glabro ; thorace quadrato, ad basin coarctato et transverse obsolete depresso, punc- tato, subtiliter pubescenti, ferrugineo ; elytris latis, punctato- striatis, fuscis, ad humeros macula undique pallide ferruginea, ehjtrorum etiam apice pallide ferrugineo ; antennisjiliformibus, fulvis; pedibus fiavis. c? Long. corp. 2| lin., lat. li lin. 5 Long. corp. 2 lin., lat. 1 lin. Oval, elongate, slightly depressed, ferrugineous, shining. Head, short, transverse ; eyes subprominent, distant, extending laterally beyond the line of the anterior margin of the thorax : between the eyes is a transverse fovea, the terminations of which are obliquely inclined to the upper and inner margins of the eyes ; this fovea is medially connected with the space between the insertion of the antenna? by a distinct longitudinal channel : the surface of the head is sparingly punctured throughout and glabrous. Thorax quadrate (almost elongate), at the base coarctate ; the anterior angles de- pressed and subacute ; the sides subsinuate, constricted at the base and finely marginate ; a broad and shallow transverse postmedial depression gives prominence to the anterior surface ; the surface punctate throughout, subpubescent, ferrugineous. Elytra distinctly broader than the thorax, somewhat depressed, punctate-striate, fus- cous, shining ; two large and somewhat irregularly- defined circular spots of a pale ferrugineous colour are situated antemedially, sepa- rated by the distance of two strioe from the suture, extending late- rally to the margin, and reaching obliquely to the humeral angle ; the apex also of the elytra is broadly ferrugineous. Antennas fili- form, fulvous. Legs flavous throughout. From the Amazon district. Taken by Mr. Bates. 17. Physimerus suboculatus. P. oblongo-ovatus, subelongatus , rufo-fuscus ; capite brevi, inter omlos Y foveolato ; thorace quadrato, ad basin constricto et trans- g2 84 PHYSIMERU8. verse depresso, punctata ; eh/tris punctato-striatis, fusco semicir- cidariter notatis ; antennis rufo-jlavis ; pedibus flavis. Long. corp. 2^ lin., lat. 1 lin. Oblong-ovate, subelongate, subparallel, rnfo-fuscous. Head short, depressed, hardly produced ; between the labrum and the base of the antenna? a smooth subtriangular depression extends transversely ; above the base of the antennae, between the eyes, is a medial longi- tudinal fovea, which, at its upper extremity, extends obliquely to- wards the upper and inner margins of the eyes, thus forming the character of the letter Y ; eyes large, prominent, situated at the base of the head, and extending laterally as far as the anterior angles of the thorax; the surface very finely punctate, glabrous. Thorax quadrate, considerably constricted towards the base ; the anterior angles depressed ; the sides marginate ; the base broadly and trans- versely depressed; the surface sparingly and finely punctate, gla- brous. Scutellum small, triangular, rufo-fuscous. Elytra consider- ably broader than the thorax, subparallel, punctate-striate, the stria? becoming almost obsolete as they approach the apex, clothed through- out (when viewed under a high power) with a fine and sparingly distributed pubescence ; the colour rufo-fuscous, with a distinct subcircular marking of darker fuscous, which, commencing at the antemedial margination, extends laterally in the direction of the suture, whence it approaches in a semicircular direction, but does not reach, the humeral angle ; the extremity of the humeral angle is also suffused with fuscous. Antennas filiform, rufo-flavous. Legs flavous throughout. This insect in general appearance closely approaches P. epliippium ; in form, however, as well as in pattern of colour it is abundantly distinct. Para. In the collection of M. Chevrolat. 18. Physimerus adumbratus. B.M. ~P.ovatus, latus, subdepressus, riifo-ferrugineus, nitidus; capite brevi, punctato ; thorace subelongato, prope basin coaretato ; elytris latis, pimctato-striatis, fusco-ferrugineis, fasciis duabus trans- versis latis jiavo-ferrugineis indistinctis ; antennis pedibtisque Jlavis. Long. corp. If lin., lat. 1 lin. Ovate, broad, slightly depressed, rufo-ferrugineous throughout. Head short, transverse, shining, distinctly punctate ; eyes prominent and distant ; between the eyes is a transverse depression, which is rnYsniKKUs. 85 inflected upwards towards its extremities along the upper and inner margins of the eyes. Thorax quadrate ; the anterior angles distinct and slightly prominent ; the sides submarginate, postmedially coarc- tate, the basal angles being subacute; the surface sparingly punctured; a broad basal depression (somewhat more thickly punctured than the rest of the thorax) is coextensive with the lateral constriction ; im- pubescent, rufo-ferragineous, with a medial longitudinal fuscous spot at the base. Seutellum triangular, rufo-ferrugineous. Elytra broad, somewhat depressed, punctate-striate, shining, with a slight ante- medial transverse depression extending obliquely upwards towards the shoulders ; fusco-ferrugineous ; a broad and indeterminate fascia, of somewhat paler colour, extends from the shoulders obliquely to the antemedial suture, from which it is separated by the distance of a single stria ; the whole of the apical half of the elytra is also more or less distinctly pale ferrugineous, adumbrated, however, by a trans- verse and indeterminate shading of darker colour. Antennce filiform ; the first joint long, and dilated towards the apex ; the second short, ovate; third, fourth, and fifth of nearly equal length; fulvous. Legs pale testaceous throughout, with the bladder-like inflation of the posterior terminal claw bright ferrugineous. At first sight, this species appears to be a small variety of P. ephippium; after much examination, however, I have resolved to register it, provisionally at least, as a distinct species. Not only is the insect considerably smaller, but its markings do not correspond to those in P. ephippium ; and the posterior femora and tarsi are more elongate. In that species there is no trace of any other fulvous marking besides the two humeral spots, and at the apex of the elytra these are distinct, and well-defined upon a black ground ; in P. ad- umhratus, however (not to notice the variation in colour), the fulvous colouring at the apex extends nearly halfway up the elytra, and is itself divided transversely by an irregularly-defined ferrugineous marking. The great difference also in the size of the insects (in a group which seems hardly ever to admit of any variation in size among the examples of a species), together with the somewhat more elongated posterior femora and tibiae, strongly support the conclusion that the two insects are specifically distinct. Amazon district, Villa Nova. Collected by Mr. Bates. 19. Physimerus brevicollis. P. ovatus, lotus, depressus, subtiliter pubescens, rufo-fuscus ; capite brevi, depresso ; ihorace transverso, ad medium constricto, punc- tate, rufo-Jlavo, ad medium rufo-fusco ; elytris lads, punctato- 86 PHYSI3IERTJS. striatis, fuscis, ad basin, ad medium transverse, et ad apicem rufis; antennis Jlliformibus, Jfavis ; pedibus testaceis. Long. corp. 2 lin., lat. 1 lin. Ovate, broad, depressed, very finely pubescent, rufo-fuscous. Head short, depressed, hardly produced ; eyes large, prominent, situated at the back of the head : antennae approximate ; above their insertion are two small tubercles, while immediately above these (extending to the base) is a medial longitudinal ridge ; surface punctate, rufous, the medial ridge being rufo-piceous. Thorax transverse (not, as in P. adumbratus, quadrate), slightly constricted in the middle ; the an- terior angles depressed and subacute ; the sides marginate ; siu-face finely punctate, obsoletely pubescent, and rufo-flavous, — the margi- nation, and a medial longitudinal line, being rufo-fuscous. Scutel- lum small, triangular, fuscous. Elytra broader than the thorax, punctate-striate (the stria? being almost obsolete, and the punctures large and deep), indistinctly clothed with ashy pubescence, fuscous, — the base of the elytra (from the humeral angle to the scutellum), a medial, broad, indeterminate fascia (which does not reach the suture), and the apex of the elytra, being rufous. Antennce filiform, robust, flavous, with the fifth and sixth joints rufo-flavous. Legs testaceous throughout. This species, in its general facies and in the disposition of its markings, almost entirely resembles P. adumbratus ; it may be, how- ever, without hesitation, separated from it by the medial longitudinal ridge on the head, and by its transverse (not quadrate and con- stricted) thorax. The Amazon district. Taken by Mr. Bates. 20. Physimerus angulo-fasciatus. P. oblongo-ovatus, lotus, depressus,subpubescens, rufo-ferrugineus ; capite brevi, subproducto, ad basin longitudinaliter carinato, punctato, Jlavo-rufo ; thorace transverso, punctata, jlavo-rufo ; elytris sat latis, punctato-striatis, transverse et oblique bivittatis ; antennis jil if ormibus, rufo-jfavis ; p>edibus Jlavis. Long. corp. 2 lin., lat. 1 lin. Oblong-ovate, broad, depressed, subpubescent, rufo-ferrugineous. Head short, somewhat produced in front, vertical (slightly reflected backwards) ; eyes large, prominent, black, extending laterally as far as the line of the thorax ; between the eyes, and above the insertion of the antennae, is a minute Y-shaped depression, while above it (ex- tending as far as the base of the bead) is an obsolete medial longitu- dinal carination ; the surface finely punctate, flavo-rufous. Thorax PIIYSIMERUS. transverse, rectilinear, at the base slightly constricted and transversely depressed ; the anterior angles subacute ; the surface finely flavo- pubescent, punctate, flavo-rufous. Scutellum triangular, fuscous. Elytra much broader than the thorax, depressed, punctate-striate (the punctures being broad and shallow, and the striae almost ob- solete : at the apex the punctures are obsolete) ; the surface rufo- flavous, clothed throughout (more or less) with a fine ashy pubescence : two transverse bands of a rufo-piceous colour (the one at the hume- ral angle, and the other medially) extend from the margins to about the fifth stria, where they are obliquely inflected (in the direction of the apex) to the suture ; these angulated fasciae are broader and more prominent in some examples than in others ; in all they are well-defined. Antenna filiform, sufficiently robust, flavous, the first, and also the sixth and seventh joints being rufo-fuscous. Legs flavo- testaceous throughout. From the district of the Amazon. In the collection of Mr. Bates and the Rev. H. Clark. Besides the differences in colouring and marking (which appear to be tolerably constant) between this and other allied species, struc- tural differences are apparent : in P. angulo-fasciatus the base of the thorax is more constricted than in P. brevicollis, and the surface of the thorax is more equate than in P. bituberculatus ; in the sculpturing of the head, also, important differences may be traced. 21. Physimerus bituberculatus. P. oblongo-ovatus, latus, depressus, subpubescens, Jlavo-rufus ; ca- pite breui, ad basin longitudinaliter carinato, punctato ; ihorace transverso, rectangulari, ad basin depresso, antice elevato, rufo- fusco, antice et ad latera rufo ; elytris latis, depressis, punctato- striatis, rufo-fuscis, ad humeros, et juxta apicem transverse rufo- fiavis ; antennis filiformibus, Jlavis ; pedibus flavis, fernoribus postitis fusco suffusis. Long. corp. 2 lin., lat. 1 lin. Oblong-ovate, broad, depressed, subpubescent, flavo-rufous. Head short, transverse, slightly depressed, hardly produced ; eyes large and prominent; between the eyes, and above the insertion of the antennae, is a small T-shaped depression, while above it, extending to the base of the head, is a longitudinal carination ; surface finely punctate. Thorax transverse, rectangular ; the anterior angles de- pressed ; this depression extends in an oblique direction to the mid- base, giving a prominence to the anterior part of the thorax, which divides itself (very distinctly by colour, and also, less distinctly, by l'nYSIMEKUS. form) into two slightly elevated tubercles ; surface punctate, rufo- fuscous, — the raised anterior surface and the sides being rufous. Scutellum triangular, fuscous. Elytra broader than the thorax, de- pressed, punctate-striate, subpubescent, rufo-fuscous, — the shoulders (from the humeral angle to the scutellum), and also a broad, suffused, transverse band {near to the apex), being rufo -flavous. Antenna? filiform, tolerably long, flavous, with the sixth and eleventh joints fuscous. Legs flavous, the posterior femora being pubescent, and suffused with dark fuscous ; the inflation of the terminal claw bright rufo-ferrugineous. This species may be separated from those nearly allied to it (all of which, at first sight, closely resemble one another) by the form of, and the markings on, the surface of the thorax. From the Amazon district. Taken by Mr. Bates. 22. Physimerus bilineatus. (Tab. III. fig. 5.) P. oblongo-ovatus, subparallelus,pubescens,punctato-striatus,nigro- fuscus ; eapite brevi (ad basin antennarum leviter producto), gra- nulato, nigra ; ihorace quadrato, angulis anticis subtruncatis, ad basin eonstricto et transverse depresso, subtil iter pubescenti, fusco, ad latent Jlavo ; elytris suhcylindricis,punetato-striatis, pubescen- tibus, nigris, lineis duabus fusco -pubescent 'ibus ; antennis jili- formibus, tenuibus, fuse is, art. 4 et 8-10 testae eis ; pedibus pal- lide testaceis, tarsis anterioribus nfo-testaceis, femorumque posti- eorum basibus fuscis. Long. corp. 2 lin., lat. |— 1 lin. Oblong-ovate, subparallel, pubescent, darkly fuscous. Head short, abruptly depressed and slightly produced : between the labrum and the base of the antennae is a triangular glabrous plane, which is bi- sected by a medial longitudinal carination ; the base of the antennas is situated immediately on the angle of abrupt deflection, giving it the appearance, when viewed laterally, of a Loxoprosopus : eyes large, situated at the base of the head, extending laterally beyond the anterior angles of the thorax ; the surface above the base of the an- tenna? finely granulated ; the colour of the labrum rufo-flavous, of the head black. Thorax quadrate ; the anterior angles subtruncate ; the sides marginate, and slightly constricted towards the base : a broad transverse depression (which is well-defined and abrupt at its upper margin) extends along the line of the base ; this depression is most narrow mediahY, becoming slightly broader as it approaches the margination : the surface subdepressed, very finely pubescent, fus- cous, with a broad lateral margination of flavous. Scutellum small, triangular, fuscous. Elytra subcyliudrical, punctate-striate, finely PHYSIMERUS. 80 pubescent, black : a line of fuscous pubescence extends longitudinally between the first and the third stria?, gradually diverging from the suture, and extending laterally at the apex ; between the fourth and seventh striae is another longitudinal line, more distinctly Jfavous, which extends (near the shoulders) as far as the margination, and terminates before it arrives at the base : antennae filiform, long and slender ; joints one to three and five to seven piceous, four, and eight to ten pale testaceous, the eleventh fuscous. Legs pale testaceous ; the anterior tarsi (and base of the tibia?) rufo-testaceous ; the base of the posterior femora is fuscous, and the globular inflation above the posterior claw bright rufous. Tunantius, in the district of the River Amazon. In the collection of Mr. Bates. 23. Physimerus Batesii. (Tab. III. fig. 0.) P. oblongo-ovatus, latus, robustus, subparallelus, subpubescens, ni- qro-ferrugineus ; thorace quadrato, ad basin constricto et trans- verse depresso, linea media longitudinali ' picea ; scutello triangu- lar!, fusco; elytris robustis, subeylindricis ; antennis Jilifornu- bus, rufo-jkivis ; pedibus jlavis, posticis rufo- et piceo-suffusis. Long. corp. 1^ lin., hit. -J lin. Oblong-ovate, broad, robust, subparallel, subpubescent, dark fer- rugineous. Head short, transverse, slightly produced; above the labrum transversely and obliquely canaliculated ; antenna? at their insertion approximate ; eyes large and prominent ; the surface thickly punctate, rufo-ferrugineous. Thorax quadrate, considerably con- stricted at the base ; the anterior angles subtruncate ; the surface at the base broadly and transversely depressed, finely pubescent through- out ; rufo-ferrugineous, with a medial longitudinal line of piceous. Scutellum triangular, fuscous. Elytra robust, subcylindrical, punc- tate-striate, transversely and obliquely depressed from the ante- medial suture towards the shoulders ; finely pubescent throughout. Antennce filiform, fine, rufo-flavous. Legs : the anterior flavous ; the posterior rufo-flavous, suffused with piceous. Yar. A. Surface throughout dark flavous instead of ferrugineous. Amazon district (Santarem and Obydos). In the collection of Mr. Bates and the Rev. H. Clark. 24. Physimerus irroratus. (Tab. III. fig. 7.) P. oblongo-ouatus, latus, robustus, subparallelus, subpubescens, fusco- fer r ugineus ; thorace transverso (subquadrato) ; elytris latis, punctato-striatis, macidis quatuor obscurissime notatis ; antennis 00 PHYSIMEETJS. longiuscidis, tenuiter dilatatis, art. 1-5 ferrugineis, 6-8 piceis, 9-11 testaceis ; pedibus flavis, femoribus posticis rufo-ferru- gineis. Long. corp. 1-| lin., lat. 1 lin. Oblong- ovate, broad, robust, subparallel, fusco-ferrugineous, finely- pubescent. Head short, transverse, depressed, slightly elongate ; above the labrum is a transverse plane depression ; above the inser- tion of the antennae is an obsolete medial carination ; eyes situated at the base of the head, not extending laterally so far as the ante- rior angles of the thorax ; the surface finely and thickly punctate ; near the inner margin of the eyes flavo-pubescent. TJiorax trans- verse (almost quadrate) ; the anterior angles subtruncate ; the sides marginate, and slightly constricted at the base ; the surface thickly clothed with a fine ashy pubescence. Seutellum triangular. Elytra broad, robust, punctate-striate, antemedially very slightly trans- versely depressed, clothed throughout with a fine ashy pubescence ; postmedially are two circular obscure spots between the third and the sixth striae, and two others, nearer to the base (smaller and less distinct, between the first and third striae), which are formed by the absence of this ashy pubescence. Antenna} filiform, slightly dilated towards the apex ; joints one to five ferrugineous (the first being suffused with fuscous), six to eight piceous, nine to eleven testaceous. Legs : the anterior flavous ; the posterior femora rufo-ferrugineous, and the tibiae rufous. Ega (district of the Amazon). In the collection of Mr. Bates. 25. Physimerus nebulosus. P. oblongo-ovatus, latus, parallelus, subjmbescens, piceus ; capite brevi, rufo-ferrugineo ; thorace qtiadrato, ad basin constricto et transverse depresso, ad latera rufo-Jlavo ; elytris lat'ts, punctato- striatis, vitta antemedia transversa cinereo-pubescenti , ad lat era et ad suturam ampliori ; antennis subdilatatis, art. 1-5 flavis, 6-11 rufo-flavis ; pedibus rufo-flavis. Long. corp. 11 lin., lat. § lin. Oblong-ovate, broad, robust, parallel, very finely pubescent, piceous. Head very short, depressed, not elongated at the apex ; eyes tolerably large, prominent, situated at the base of the head, extending laterally as far as the anterior angles of the thorax; surface at the inner margin of the eyes flavo-pubescent, thickly punctate, rufo-ferru- gineous. Thorax quadrate ; the anterior angles subacute and de- pressed, the sides submarginate and considerably constricted towards the base ; a broad postmedial depression extends along the line of PHYSIMERUS. 91 the base ; at the sides finely flavo-pubescent and rufo-flavous (more darkly piceous on the line of margination). Scutellum small, tri- angular. Elytra broad, punctate-striate, clothed throughout with a very fine pubescence (which in some parts can only be traced under a high magnifying power) : a broad irregular antemedial band extends transversely from the suture to the margination ; near the suture, and also near the line of margination, it considerably increases in breadth (extending in front at these points nearly to the shoulders and scutellum) ; this band is formed by an ashy-grey pubescence ; the apex also is similarly clothed with pubescence. Antenna; filiform, tolerably long, subdilated towards their apex; joints one to five flavous, six to eleven rufo-flavous. Legs : the anterior flavous ; the posterior rufous, the femora being suffused with piceous. From the neighbourhood of Rio Janeiro. Collected by Mr. Squire. In the collection of Mr. Baly. 26. Physimerus pruinosus. P. oblongo-ovatus, subparallelus, fuscus ; capite brevi, subproducto ; thorace elongate, rectangular}, ad basin constricto, ad latera de- presso ; elytris punctato-striatis, ante medium oblique depresses, ad latera irregulariter cinereo lineatis ; antennis longiusculis, subincrassatis, art. 1, 2, 6-8 dilatatis et fuscis, 3-5 et 9-11 rufo- jlavis ; pedibus rufo-fuscis. Long. corp. 2 lin., lat. -| lin. Oblong-ovate, subparallel, punctate-striate, impubescent, dark fuscous. Head short, slightly produced; below the base of the antennae is a transverse triangular depression : eyes large, situated at the base of the head, and extending laterally as far as the anterior angle of the thorax ; between the eyes, and immediately above the base of the antennae, is a V-shaped depression, rendered more di- stinct by an ashy-grey pubescence : the surface finely punctate ; at the inner margin of the eyes is a line of fine grey pubescence. Thorax elongate, constricted at the base, rectangular ; the anterior angles depressed ; the sides marginate ; at the base is a broad transverse antemedial depression ; the surface (under a high magnifying power) is obsoletely pubescent, more distinctly at the sides, which are marked (from the base of the head immediately behind the eyes to the posterior angle) with a longitudinal line of ashy-grey pubescence. Scutellum small, triangular, glabrous. Elytra broad, subcylindrical, distinctly punctate-striate ; an antemedial depression extends ob- liquely upwards towards the humeral angles ; throughout the surface are scattered several long and isolated single hairs, which are more 92 rHYSIMERTJS. frequent on the sides and at the base ; near to the line of margina- tion (at the sixth and seventh striae) is an irregular line of pale pubescence from the shoulder to the apex ; medially, also, between the second and third striae is a minute longitudinal marking of the same colour. Antennae filiform, slightly dilated; the joints 1, 2 and 6 to 8 subdilated and darkly fuscous, 3 to 5 elongate and rufo-ferru- gineous, 9 to 11 flavous. Legs rufo-fuscous, the posterior femora being suffused with piceous, and the globular inflation over the apical claw bright rufous. Colombia. In the collection of Mr. Baly. 27. Physimerus griseostriatus. P. oblongo-ovatus, fuscus ; capite subproducto, leviter reflecto-punc- tato, nigro ; ihorace quadrato, antice subrotundato, ad basin trans- verse depresso, pubescenti, flavo, ad medium longitudinal iter fusco; elytris subparallelis, punctato-striatis, pube admodum brevi ves- ti'tis, ad latera jiavo-vittatis ; antennis filif omnibus, art. 1-3 fusco suffusis, 4 testaceo, 5-8 fuscis, 9-11 testaceis; pedibmjiavis, femoribus posticis ad basin fusco suffusis. Long. corp. 1-| lin., lat. f— 1 lin. Oblong-ovate, subparallel, deeply punctate-striate, pubescent, fuscous. Head short, transverse, somewhat produced in front ; eyes large, prominent, situated at the base of the head, and extending laterally beyond the angles of the thorax ; the antennae are inserted between the eyes, and (as in Loxoprosopus) immediately upon the angle (which is somewhat abrupt) that is formed by the depression of the anterior part of the head; surface thickly punctate, black. Thorax quadrate, with the anterior angles depressed and obsolete ; the sides submarginate and slightly contracted at the base, which is transversely and postmedially depressed ; the surface subpubescent throughout, flavous, with a medial longitudinal marking (broad and suffused) of flavo-fuscous. Scutellum minute, triangular, fuscous. Elytra broad, subparallel, punctate-striate, clothed throughout (as is apparent under a high magnifying power) with a fine pubescence, but more distinctly so at the margin: a broad band of flavous pubescence is continued along the line of margination from the shoidders to the apex ; this band is irregular and (apparently) un- certain in form : colour fuscous. Antennae tolerably long, filiform ; the first three joints suffused with fuscous ; the fourth testaceous ; the fifth to eighth dark fuscous ; the ninth to eleventh pale testaceous. Legs flavous throughout, the apex of the femora being suffused with fuscous. This species, in form and markings, is not unlike P.jpruinosus ; it GLENIDION. 93 may, however, be readily distinguished by its more transverse and more pubescent thorax, as well as by the less deep striation of the head. From the neighbourhood of Ega (River Amazon). Taken by Mr. Bates. Genus 11. GLENIDION*. Labrtjm breve, subcirculare. Palpi haxillares elongati, robusti, art. 2l'° et 3th ad apicem oblique truncatis, apicali attenuate, conico. Palpi labiales elongati, minuti, attenuati, subcylindrici. Antexx je filiformes (?), art. 3'i0 et 4t0 ceque ac 2nd° brevibus, 5'" et 6'° longioribus, attenuatis (reliqui desunt). Caput breve, production, vix depression. Thorax transversus, rectilinearis, ad basin leviter constrictus, ad latera marginatus. Scutelltjm minntissimum. Elytra parallela, elongata, subdepressa, glabra. Pedes : tarsi anteriores attenuati, vix dilatati, femora postica elongata ; tibice etiam elongatce et longitudinaliter (ad apicem) excavatw ; tarsi, art. basalis productus et sat attenuatus (art. reliqui desunt). Elongate, subparallel, depressed. Labrum short, narrower than the base of the head, subcircular. Maxillary palpi elongate ; the basal joint minute, almost quadrate; the second longer, obliquely truncate at the apex ; the penultimate somewhat broader, more cylindrical, and also obliquely truncate at the apex ; the terminal joint elongate and conical. Labial palpi elongate, minute. Antennce approximate, inserted between the lower margins of the eyes, probably filiform; the basal joint elongate, dilated, and sub- incurved towards the apex ; the second shorter, somewhat narrower, ovate ; the third as short as the second, and narrow ; the fourth and fifth elongate, longer than the basal joint; the rest 'are wanting in the example before me. Eyes lateral, large, subglobose, situated at some distance from the base of the head, and extending laterally as far as the anterior angles of the thorax. Head short, transverse, not so much depressed from the plane of the thorax as the preceding genus, Physimerus ; somewhat porrect. Thorax transverse (almostquadi-ate),rectilinear,shghtly constricted towards the base ; the anterior margin is obsoletely emarginate ; the anterior angles depressed, the sides evenly marginate ; the base * yXijvt], longurio. 94 GLENIDION. transversely foveolated in O. rubronotatum ; the surface equate, sub- cylindrical. Scutellum almost obsolete, much more minute than in Physimerus, depressed below the plane of the elytra, triangular. Elytra broader than the thorax, elongated, subparallel, depressed, glabrous ; in O. rubronotatum punctate. Legs : the anterior femora when viewed from the front robust, sub- dilated medially. The tibice elongate, at the base inflected, and gra- dually subdilated ; the apex is obliquely truncate, and armed (beyond the insertion of the tarsus) with a robust incurved spur. The tarsi are elongated, almost attenuate, narrower than the base of the tibia ; the basal joint is long, slightly dilated towards the apex; the second is of the same form, but shorter ; the third is ovate, shorter than the second, not bilobed ; the terminal joint is produced, and gradually thickened towards the apex, where it terminates in a bifid claw, the inner surface of which is armed at the base with a robust spur. Posterior femora incrassated and produced, regularly ovate, reaching nearly to the apex of the elytra. The tibice also are elongate, at the immediate base inflected, and gradually thickened towards the apex ; when viewed obliquely from behind, the posterior surface is longitu- dinally flattened and postmedially hollowed out, gradually increasing in depth of concavity, until at the apex it forms a socket for the reception of the tarsus ; the margination of this elongated channel is subsinuate near the apex and more broadly developed ; towards the insertion of the tarsus it is armed with a series of comb-like spurs, close and porrect ; the extreme apex terminates in a robust and short single spur. The tarsus is unfortunately, in the only example I have before me, mutilated ; the basal joint is very elongate, and slightly thickened towards the apex. Owing to the unfortunate mutilation of the posterior tarsus in the specimen of G. rubronotatum, I am not able to assure myself, by actual inspection, of the presence of the inflation above the terminal claw, and henc'e of the propriety of introducing it into this section of Halticidae. I am well satisfied, however, from the previous exami- nation of the example by Mr. Baly when in his possession, that it belongs to this group ; this being the case, its affinities are evidently more with Physimerus than with other forms. Its general facies is almost identical, were it not for its produced posterior femora and tibiae. The necessity of separating it, however, from this genus is abundantly manifest ; the striking peculiarity of the third abbreviated joint of the antenna?, combined with the elongated postical femora and elongated and grooved postical tarsi, is sufficient to constitute it the basis of a separate genus. HYPANTHERTTS. 95 1. Glenidion rubronotatum. G. oblongo-ovale, parallelum, depressum, nitidum, nigrum; capite brevi, subproducto, fovea incisa inter oculos, impunctato, rufo- ferrugineo, Icevi ; thorace quadrato, ad Jatera etpostice marginato, ad basin constricto et transverse foveolato, impunctato, rufo-ferru- gineo ; elytris depressis, punctis velut in striis ordinatis, nigris, apud medium et ad apicem (juxta suturam) litura ferruginea umbratis; antennis JUifonmbus, art. 2-4 abbreviates, 5 et 6 elon- gatis, 1-3 ferrugineis, 4-6 fuscis (reliqui desunt) ; pedibusflavis, femoribus jjosticis fuscatis, tibiisque eiongatis. Long. corp. 2\ liii., lat. 1 lin. Oblong-oval, parallel, depressed, black, sbining. Head short, transverse, depressed, hardly elongate in front, impnnctate ; eyes large, subprominent, distant; between the eyes and above the in- sertion of the antennae, which are contiguous, are two small abrupt transverse fovese, while above them a third (broader and more di- stinct) extends upwards in a longitudinal direction. Thorax qua- drate ; sides marginate, slightly constricted towards the base ; the anterior angles are subacute; close to the basal line is a narrow transverse groove (which does not terminate, as in the genus Mono- platus, before it reaches the humeral angle, but which extends along the whole of the basal line, and connects itself with the lateral margination) ; surface impunctate, rufo-ferrugineous. Scutellum tri- angular, minute, fulvo-rufous. Elytra depressed, parallel, with rows of punctures arranged in the form of striae (the striae being obscurely apparent near the shoulders and at the margination) ; the colour is black, on either side of the suture, postmedially, and especially to- wards the base, irregularly shaded off into rufo-ferrugineous, this decoloration around the postmedial suture being indeterminate and irregularly defined. Antennce filiform; the first joint dilated and subelongated ; the second short, ovate ; both of these fulvous ; the third attenuate, abbreviated, hardly longer than the second ; the fourth and fifth elongate (the rest are wanting) ; colour fusco-fulvous. Legs : the posterior elongated, flavous, with the apex of the posterior femora and tibiae clothed with fuscous. Brazil. In the collection of Mr. Baly. Genus 12. HYPANTHERUS *. Palpi maxillares elongati, art. 3th producto et cylindrico. Palpi labiales elongati, attenuati. Antenxje plus minus dilatatoz, robustaj, approximate. * virb, sub; avQrjpbs, coloratus. 96 IIYl'AXTIIl'.IiUS. Oculi distantes, ad basin capitis, subglobosi. Caput breve, robustum, vix ad apicem produetwm, depressum. Thorax transversus, aliquando subquadratus, depressus. Elytra lata, robusta, pier unique punctato-striata et leviterpube vestita. Pedes: ant. tibiis ad basin incurvatis, ad apicem dilatatis et oblique truncatis ; ant. tarsis brevibus, art. 2ndo minuto ; femoribus pos- ticis valde incrassatis ; tibiis longitudinaliter marginatis, et ante apicem ecalcaratis. Labrum transverse, subrotundate at the margins. Maxillary palpi (Tab. IV. fig. 1 m) subelongate ; the basal joint minute ; the second ovate, and broadly truncate at the apex ; the third longer and broader than the second, and subcylindrieal ; the apical joint is broadly conical. Labial palpi (Tab. IV. fig. 1 n) subelongate, narrower than, but of the same form as, the maxillary. Antenna} robust, approximate, inserted below and somewhat be- tween the lower margins of the eyes, more or less dilated medially ; the first joint is incrassated, and slightly incurved outwards towards the apex ; the second short and broad ; the third and fourth are sub- equal, longer and narrower than the first ; the fifth is shorter than the fourth ; the sixth to the eighth are shorter and generally more robust ; the ninth to the eleventh are gradually attenuated towards the extremity. Eyes tolerably large, situated at some little distance from the base of the head and not extending laterally so far as the anterior angles of the thorax. Head short, robust, narrower than the thorax, hardly elongated in front, depressed at almost right angles to the plane of the elytra. Thorax transverse (in some species almost quadrate), broader than the head, rectangular ; the sides marginate, narrower relatively than in Thrasygoeus, Eupeges, and even Phylacticus ; the anterior angles are more or less depressed, — its whole surface being inclined at a very apparent angle to the plane of the elytra. Scutellum triangular, impunctate, generally impubescent. Elytra robust, more manifestly broader than the thorax than in the subsequent genera, pimctate-striate, generally clothed with pubescence, and depressed antemedially and obliquely, so as to give an appearance of prominence to the scutellary surface. Legs: the anterior femora tolerably robust and subcylindrieal, slightly incurved near the apex. The tibia (Tab. IV. fig. 1 c) is abruptly incurved immediately at the base and gradually dilated towards the apex, where it is broadly obliquely truncate. The tarsi UYl'AXTIIEUrs. (Tab. IV. fig. I d) are short and broad, the basal joint being broadly ovate ; the second of the same form as the basal joint, but more minute ; the third broader than the first, broadly ovate, not bi- lobed ; these three basal joints are densely margined with thick rigid pubescence ; from the centre of the third proceeds the base of the terminal joint, which is attenuated and gradually incrassated, ter- minated by the apical claw, the two members of which are simple, and unarmed at their inner margin by any basal tooth. The posterior femora are very robust, and incrassated, slightly attenuated towards the apex, broadly truncate. The tibia (Tab. IV. fig. 1 g) is short and robust, abruptly bent at the immediate base, and, when viewed from behind, longitudinally flattened ; this flat longitudinal surface is on either side marginate ; the marginations are produced immediately above the insertion of the tarsus into an obtuse spur, and continued to the extreme apex, where they terminate in two robust claws ; the insertion of the tarsus is at some little distance from the apex, and the socket which contains it is armed with minute teeth, like the teeth of a comb. The tibice (Tab. IV. fig. 1 h) are short and attenuate, the first and second joints being ovate, and the third broadly sub- eircular ; the fourth is elongate, subincurved, and produced above into a broad globular inflation, which completely conceals from above the apical claw. This claw is bifid and, like the anterior claw, simple. The general appearance of the insects composing this genus will (without reference to structural details) at once separate them from others. They are more robust, more cylindrical, and less depressed than in Physimerus ; the thorax is narrower and more rectangular than in Phylaeticus, which at first sight it closely resembles ; and from Thrasygceus the genus is at once separated by its much smaller size, as well as by its more contracted thorax. 1. Hypantherus concolor. (Tab. IV. fig. 1.) H. oblongus, latus, sat robust us, Jlavo-pitbescens, rufo-ferrugineus ; capite brevi, super antennarum basin T foveolato, punctato, ad medium rufo-fusco suffuso ; thorace transverso, rectangulari, ad basin transverse depresso, punctato ; elytris latis, robustis, ad medium oblique depressis, punctato - striatis ; antennis brevibus, incrassatis, rufo-testaceis, art. 6-8 nigris ; pedibus robustis, sub- pubeseentibm, rufo-ferrugineis. Long. corp. 2| lin., lat. 1|- lin. Oblong, broad, tolerably robust, flavo -pubescent, mfo-fermgineous. Head short, transverse, slightly produced ; between the mouth and the base of the antenna? is a transverse subtriangular depression ; immediately above the insertion of the antenna? is an obsolete longi- H 98 HYFANTHERTJS. tudinal fovea, which joins at its upper extremity a broader transverse shallow depression: the surface below the antennas almost impunctate ; above, strongly punctate, rufo-ferrugineous, medially suffused with rufo-fuscous. Thorax a little broader than the head, transverse, rect- angular ; the anterior angles depressed ; the sides marginate ; at the base is an obsolete shallow transverse depression ; the surface flavo- pubescent, finely punctate. Scutellum triangular, flavo-pubescent. Elytra tolerably broad, robust, medially subdepressed, punctate- striate, flavo-pubescent. Antenna? short, robust, incrassated ; the first joint broad and long ; the second short, ovate ; the third nearly as long as, but more slender than, the first ; the fourth and fifth shorter and slightly broader than the third ; the sixth, seventh and eighth broadly dilated ; rufo-testaceous, sixth to eighth black. Legs robust, subpubescent, rufo-ferrugineous. From the district of the River Amazon. In the collections of Mr. Bates and the Rev. H. Clark. 2. Hypantherus ambiguus. H. oblongo-ovatus, sat robustus, fusco-ferrugineus ; capite brevi, super antennarum basin bituberculato , ad basin crebre punctato, rufo-ferrugineo, in medio rufo-fusco ; ihorace transverso, Icevigato, jlavo-pubescenti ; elytris robustis, punctato-striatis,jlavo-pubes- centibus; antennis brevibus, incrassatis, art. 1-5 jiavis, 6-8 nigris, 9-11 jiavis ; pedibus anterioribus jiavis ; femoribus posticis rufo- fascis, tibiis ad apicem obsolete dentatis, et (cum tarsis) rufo- fulvis. Long. corp. 2|-3 lin., lat. 1| lin. Oblong-ovate, sufficiently robust, of a dark-brown ferrugineous colour throughout. Head short, slightly produced ; above the mouth is a transverse subtriangular depression : immediately above the in- sertion of the antennae is a deep longitudinal fovea, giving prominence to two oblong shining tubercles, one on either side of it ; above this fovea there is no trace of a transverse depression, as in H. concolor : the surface in front levigate, above thickly and deeply punctured ; rufo- ferrugineous, suffused medially with rufo-fuscous. Thorax trans- verse, rectangidar ; the anterior angles depressed ; the sides marginate ; the surface levigate, flavo-pubescent. Scutellum triangular, flavo- pubescent. Elytra robust, longer and proportionally narrower than in H. concolor, antemedially transversely subdepressed, punctate-striate, flavo-pubescent (the punctures being somewhat finer and the pu- bescence closer than in H. concolor). Antennas short, robust, incras- sated, the third and fourth joints being slender, and of the length of llVr'ANTHERUS. 99 the first ; the sixth to the eighth dilated ; the colour of the first and second rufo-flavous, the third to fifth flavous, the sixth to eighth black, the ninth to eleventh flavous. Legs: the anterior flavous throughout ; on the outer edge of the posterior tibiae, near the apex, is a minute spur- like projection ; the femora pubescent, rufo-fuscous ; the tibiae and tarsi rufo-fulvous. In form and general appearance this insect is closely allied to H. concolor ; it may be separated, however, by its greater length, its pro- portional narrowness, as well as by the difference of its colouring, — by the difference of the sculpturing at the apex of the head, and by the character of its punctuation and pubescence on the elytra. From the district of the Amazon. In the collection of Mr. Bates. 3. Hypantherus assiniilis. H. oblongo-ovatus, robustus, Jlavo-pubescens, rufo-ferrugineus; capite brevi, inter oculos V carinato, impunctato ; thorace trans- verso, cequato, rectangulari ; elytris latis, subeylindricis, punctato- striatis, ante medium transverse depressis ; antennis Jiliformibus, ferrugineis, art. 6-11 fuscis ; pedibus rufo-ferrugineis. Long. corp. 2 lin., lat. 1 lin. Oblong-ovate, robust, finely flavo-pubescent, rufo-ferrugineous. Head short, transverse, slightly produced in front ; between the la- brum and the base of the antenna? are a longitudinal medial and also two oblique carinations ; above the base and between the eyes are also two oblique carinations, forming together the character of the letter V ; eyes lateral, globose, situated nearly at the base of the head ; the surface is subpubescent, more distinctly at the inner margin of the eyes, at the base impunctate, and rufous. Thorax transverse (almost quadrate) ; the anterior angles depressed and subacute, the sides marginate and subparallel ; the surface is inclined, equate, and subpubescent. Scutellv/m small, triangular, fuscous. Elytra broad, robust, subcylindrical, slightly tapering towards the apex, finely punctate -striate, evenly and obsoletely pubescent; when viewed obliquely, a shallow transverse antemedial depression is apparent. Antennce robust, filiform, slightly thickened near the apex, ferrugi- neous, the sixth to the eleventh joints being fuscous. Legs robust, rufo-ferrugineous, and subpubescent. A single example of this species was taken by Mr. Squire in the neighbourhood of Rio Janeiro, and is in the cabinet of Mr. Baly. It differs from H. ambiguus by its filiform (not broadly incrassated) an- tennae, by its shorter and comparatively more robust form, and by the obsolete stria? on the elytra. h2 100 HYPAXTHERUS. 4. Hypantheras Batesii. H. oblongo-ovatus, robustus, obsolete pubescens, rufo-ferrugineus ; capite brevi, antice subproducto, inter oculos bituberculato, ad basin punctato ; thorace transverso, rectangulari ; elytris robustis, ante medium obsolete depresses, punctato-striatis ; antennis ro- bustis, flavis, art. 6-8 incrassatis et nigris ; pedibus rufo-jiavis. Long. corp. 2| lin., lat. 1\ lin. Oblong-ovate, robust, obsoletely pubescent, rufo-ferrugineous. Head short, transverse, slightly produced in front ; below the base of the antennse is a transverse triangular plane depression ; above the base are two short tubercular elevations (not produced longitudinally, as in H. ambiguus) ; at the base of the head deeply punctate (not granulated, as in H. ambiguus) ; the eyes are lateral and globose, situated nearly at the base of the head : in colour the apex is flavous, and the transverse depression below the antennse fuscous (in H. am- biguus, the anterior part of the head is uniformly rufo-ferrugineous) ; the base is ferrugineous, medially fuscous. Thorax transverse, rect- angular; the anterior angles depressed and subacute; the sides parallel and evenly marginate ; the surface equate, thickly punctate, and obsoletely pubescent (less distinctly so than in H. ambiguus), rufo-ferrugineous, medially broadly piceous. Scutellum triangular, fuscous. Elytra broad, robust, antemedially transversely depressed, rufo-ferrugineous (not fuscous, as in H. ambiguus) ; finely pubescent, punctate-striate, the striae being deep, and the punctures obsolete. Antennas robust, medially dilated, flavous, the sixth to the eighth joints being incrassated and black. Legs robust, subpubescent, rufo- flavous. The above description indicates the several points of difference between this species and H. ambiguus, to which it is very closely allied. H. Batesii may be separated not only by the colour and striation of the elytra, and the colour of the thorax, but by the form of the tubercular markings about the base of the antennae. Taken by Mr. Bates in the district of the River Amazon, and in that gentleman's collection. 5. Hypantherus Deyrollii. (Tab. IV. fig. 2.) H. oblongo-ovatus, subpubescens, fiavus ; capite ad basin antenna - rum foveolato ; thorace transverso, ad basin depresso ; elytris punctato-striatis, ad apicem favo-pubescentibm ; antennis fili- formibus, robustis ; pedibus posticis brevibus. Long. corp. 2 lin., lat. f-1 lin. HYPANTHERUS. 101 Obloug-ovate, subrobust, parallel, subpubescent, flavous. Head short, slightly produced ; between the eyes and above the base of the antennas is an obsolete fovea in the form of the letter T ; the surface is finely pubescent and thickly punctate. Thorax transverse (almost quadrate) ; the anterior angles depressed and somewhat rounded ; the sides marginate ; near the base are two broad postmedial de- pressions, while from the head to the scutellum extends an obsolete (almost imperceptible) longitudinal impression. Scutellum small, triangular. Elytra broad, parallel, punctate-striate (the punctures being broad and the striae shallow) ; clothed throughout with a fine flavous pubescence, which can only be traced by a high magnifying power, except at the apex, where it is more distinctly apparent. Antenna} filiform, tolerably robust. Legs : the posterior short ; the apex of the tibiae (which does not extend beyond the elytra) being produced beyond the insertion of the tarsi; the globular inflation above the posterior claw bright red. This species differs considerably in detail from H. rufo-testaceus, which in general facies it resembles ; it is narrower in form, the an- terior angles of the thorax are less acute, the striation on the elytra is more distinct, the pubescence on the surface is closer, and on the elytra there is hardly any trace of a transverse antemedial depression. Island of St. Paul, Brazil. In the cabinet of M. Deyrolle. 6. Hypantherus rufo-testaceus. H. oblongo-ovatus, robustus, subpubescens, rufo-testaceus; capite inter ocidos tricarinato ; thorace quadrato, ad apicem coarctato, ad basin transverse depresso, punctata ; elytris robustis, striato- punctatis, ad basin Jlavo-pubescentibus ; pedibus subpubescentibus, rufo-jiavis, femoribus (et tibiis ad basin) posticis fusco suffusis. Long. corp. 2-A- lin., lat. 1^ lin. Oblong-ovate, robust, sparingly pubescent, rufo-tcstaceous. Head short, somewhat produced ; between the insertion of the antennae is a longitudinal carination, which extends on either side obliquely in the direction of the upper margin of the eyes ; within this V-shaped ridge is another medial longitudinal carination, which extends to the line of the base ; the surface thickly punctate. Thorax quadrate ; the anterior angles slightly truncate ; sides anteriorly slightly coarctate, marginate, the margination shortly and abruptly contracted imme- diately behind the anterior angle ; surface at the base transversely subdepressed, punctate. Scutellum small, triangular, rufo-fuscous. Elytra broad, robust, with punctures arranged in the form of striae : a transverse antemedial depression extends obliquely upwards to- 102 THRASYGCEUS. wards the humeral angles ; the surface glabrous except at the sides, and more evidently at the apex, where it is distinctly flavo-pubescent. Antennae wanting, with the exception of the first two joints ; the first broad, dilated towards the apex, and reflected backwards ; the second short and truncate, both rafo-testaceous. Legs tolerably robust, sub- pubescent, rufo-flavous, the extreme apex of the posterior femora and the base of the posterior tibia? being suffused with fuscous. Brazil. In the cabinet of M. Deyrolle. Genus 13. THRASYGCEUS*. Labrum breve, transversum. Palpi maxillares elongati, subcylindrici ; art. 3"° subparallelo, et ad apicem truncato, 4t0 minuto, elongato. Palpi labiales art. 2"do subdilatato, ultimo elongato, attenuato. Antenxje Jill formes. Caput breve, hand antice productum, verticals . Thorax latus, transversus, antice subconstr ictus, ad latera marginatus et rectilinearis. Elytra subdepressa, lata, punctato- striata. Pedes femoribus anterioribus sat robustis, tarsis brevibus, art. lm° triangulari, 2nd0 brevi, lato, 3"'° lato et bilobo ; femoribus posticis incrassatissimis, tibiis longitudinaliter depressis (hand cylin- dricis) et marginatis, simplicibus, haud dente ad marginem armatis. Labrum short, transverse, abruptly rounded at the margins. Maxillary palpi (Tab. IV. fig. 3 m) elongate, subcylindrical ; the basal joint quadrate, minute ; the second broader, dilated, and ob- liquely truncate near the apex ; the third somewhat broader than the second, subparallel, and transversely truncate at the apex ; the apical joint minute and elongate. Labial palpi (Tab. IV. fig. 3 n) : the basal joint dilated at the apex ; the second less parallel than in the maxillary, transversely truncate ; and the terminal joint elongate and attenuated. Antenna; filiform ; the basal joint slightly dilated and inflected outwards from the base ; the second not ovate, but of the same form as, and shorter than, the first ; the third to the fifth of equal length, nearly equal in length to the first, more attenuated, slightly incras- sated towards the apex, and obliquely truncate ; the terminal joints are somewhat more attenuated ; the whole very finely pubescent : the * Qparri's. fortis; yvlor, membrum. THRASYGCEUS. 10:5 antennae are at their insertion approximate, and immediately below and between the inner margin of the eyes. Head small, transverse, not produced in front, inclined at right angles to the plane of the elytra. Thorax broader than the head, and relatively broader than in the adjoining groups, transverse, slightly constricted in front ; the ante- rior angles considerably depressed ; the surface subequate ; the sides rectilinear and marginate ; the basal line sinuate. Scutellum triangular, impunctate. Elytra broad, robust, subdepressed, punctate-striate ; in some species finely pubescent, and variegated in colour. Legs : anterior femora sufficiently robust, slightly dilated anteme- dially. The tibice are straight (inflected at the immediate base), longitudinally ribbed or marginate, slightly dilated towards the apex. The tarsus (Tab. IV. fig. 3 d) is short ; the first joint subelongate, triangular, of breadth equal to that of the tibia ; the second shorter, broader ; the third broader still, transversely bilobed, margined with rigid pubescence ; the apical joint is elongate, slightly incurved, and incrassated towards the apex. The terminal claw is bifid, each member consisting of a double claw of equal length. The posterior femora are very broadly incrassated, ovate, gradually attenuated to- wards the apex ; at the base broadly truncate — the junction of the femur to the metathorax being at an angle of this truncation. The tibice (Tab. IV. fig. 3 g) are short and straight ; the surface is not cylindrical, but trilateral — the posterior surface being, near the apex, subsinuate in outline ; the apical socket, hi which the tarsus is in- serted, is elongate and truncate. Of the tarsi (Tab. IV. fig. 3 h) the basal joint is elongate, and widened towards the apex, obliquely truncate ; the second of the same form, but shorter ; the third sub- cylindrical. This genus is allied to Ewpeges in the form of its thorax, as well as of the posterior femora and the maxillary palpi. Its totally dif- ferent facies however (less ovate and less parallel), the thorax rela- tively smaller, and the elytra more robust, besides some difference in the form of the posterior tibia, compel us to feel that it ought to constitute a separate, although a closely allied genus. 1. Thrasygceus eximius. (Tab. IV. fig. 3.) T. oblongo-ovalis, latus, sat robustus ; capite hand produeto, brevi, antice glabro, ad basin grarmlato, nigro ; thorace transverso, antice constricto etiamque depresso, angidis anterioribus subacutis, ad basin transverse depresso, subpubescenti, punctulato ; ehjiris robustis, punctatis (baud striatis), pubescentibus, nigris, maculis quatuor magnis (duabusque minutis ad scutellum) pallide Jtavis ; 104 THRASYGCEUS. antennis filiformibus, tenuibus, articulis 1-4 rufo-Jkivis, 5-/ fuscis, 8-11 pallid 'e cinereis ; pedibus jiavis. Long. corp. 3f lin., lat. 2 lin. Oblong-oval, broad, robust, subdepressed. Head short, depressed (almost vertical), not produced ; below the base of the antennae is a transverse triangular glabrous depression ; the surface between the eyes granulated, with two more distinct wart-like prominences ; at the base thickly punctate, black. Thorax transverse, constricted in front ; the anterior angles depressed, hardly extending laterally be- yond the eyes ; the sides marginate ; at the base is a broad shallow medial depression ; the surface subpubescent and finely punctate, flavous, slightly suffused with black towards the apex. Scutellum triangular, black. Elytra robust, somewhat broader than the thorax, with punctures arranged in the form of striae, finely and closely pu- bescent ; black, with four large and two smaller white markings ; the two smaller oval, close to the scutellum between the first and third striae ; of the larger, two (broad and transverse) are situated antemedially between the second and the ninth striae, while two are similarly situated nearer to the apex. Antennas filiform, attenuated ; first to fourth joints rufo-flavous (on the upper surface of the apex fuscous), fifth to seventh fuscous, eighth to eleventh very pale cine- reous, almost white. Legs flavous throughout ; the apex of the pos- terior femora dark fuscous ; the bladder-like inflation of the posterior claw bright ferrugineous. This insect, at first sight, resembles Octogonotes sumptuosus ; it differs, however, in its more robust form, in the deeper and more distinct punctuation at the back of the head, and by the absence of any tooth-like projection in the margination of the thorax, in the fuscous colour of the scutellum, and in the disposition and colouring of the markings on the elytra, as well as in the great contrast of form of the maxillary palpi. A single specimen, captared by Mr. Bates in the Amazon district, is in that gentleman's cabinet. 2. Thrasygceus exaratus. T. oblongo-ovatus, lotus, punctato-striatus, nigro-cyaneus ; capite brevi, transversa, super basin antennarum bituberculato, punctato, fulvo-rufo ; thorace transverso, antice attenuato, ad basin trans- verse depresso, sparsim punctato, rufo ; elytris latis, punctato- striatis, nigro-cyaneis ; antennis filiformibus, nigris ; pedibus robustis, piceis, femorihus fusco suffusis. Long. corp. 4 lin., lat. 2 lin. Oblong-ovate, broad, punctate-striate, dark blue, glabrous. Head THRASYGCEUS. 105 short, transverse, depressed, not produced in front ; above the labrum is a transverse triangular depressed plane ; immediately above the insertion of the antennae are two small obsolete tubercles, while be- tween them is an indistinct linear depression extending towards, but not reaching, the base of the head ; surface punctate, fulvo-rufous. Thorax transverse, considerably constricted in front ; the anterior angles much depressed ; the sides marginate, and near the anterior angles subsinuate ; at the base is a broad transverse medial depression (not extending to the margins) on either side of the centre of the disc ; near to the anterior angles is a small circular depression ; the surface is glabrous, finely and sparingly punctate, rufous. Scutellum triangular, fusco-rufous. Elytra broad, robust, punctate-striate, of a deep dark-blue colour, glabrous. Antennai filiform, black, the first joint being suffused with rufo-fuscous. Legs robust, piceous, the femora being suffused with fuscous. Brazil. In the collection of M. Chevrolat. 3. Thrasygceus obscurus. T. oblongo-ovatus, robustus, subparallelus, subpubescens, pallide jiavus ; capite brevi, supra antennarum basin tenue bitubercu- lato, granulato ; thorace transversa, lato, reetangulari, punctato ; elytrispunctato-striatis, subpubcscentibus ; antennis robustis,fili- formibus ; pedibus subrobustis. Long. corp. 2| lin., lat. lj lin. Oblong-ovate, robust, subparallel, very finely pubescent, of a pale flavous colour throughout. Head broad, transverse, depressed, slightly produced ; above the labrum is a transverse and triangular plane ; immediately above the base of the antennae are two obscure but somewhat broad tubercles, forming between them and above them a fovea of the shape of the letter T ; the surface below the tubercles pale flavous, above coarsely granulated and fuscous. Thorax broad, transverse, rectangular, rectilinear; the anterior angles depressed and distinct ; the sides submarginate ; the surface finely punctate. Scutellum triangular, impunctate, fulvo-flavous. Elytra somewhat broader than the thorax, subparallel, punctate-striate, clothed throughout with a fine thick pubescence. Antenna? tolerably long, robust, filiform ; the first joint long, and broadly dilated at the apex ; the second short, ovate, inserted at the outer margin of the first ; the third longer than the first, pale flavous. Legs tolerably robust, pale flavous throughout. Brazil. In the collection of Mr. Btdy. 106 THEASTGCEUS. 4. Thrasygceus imdatus. T. oblongo-ovatus, latus, subdepressus, subtiliter pubescens, rufo- ferrugineus ; capite subelongato, granulato ; thorace transverso, ad apicem subconstricto, ad basin et ad angulos anticos depresso ; elytris latis, punctato-striatis, vittis duabus transverse notatis in- constantibus undatis fiavis, hac ante medium, ilia ad basin ; an- tennis robustis, ad apicem dilatatis, art. 1-6 fusco suffusis, 7-9 piceis, 10 et 11 testaceis ; pedibus jiavis. Long. corp. 2f tin., lat. 1^ tin. Oblong-ovate, broad, subdepressed, very finely pubescent, of a dark fawn or ferrugineous colour. Head transverse, subelongated ; above the labrum is a transverse triangular plane, extending up- wards nearly to the base of ttie antenna? : above the antenna? are two broad and obsolete tubercles, extending to the inner margin of the eyes ; above them is a slight transverse depression : the surface gra- nulated, of a dark brown colour, — the upper and inner margins of the eyes, and a small circular spot medially at the base, being of a paler hue : eyes large, prominent, situated at the base of the head, extending laterally nearly as far as the angles of the thorax. Tho- rax transverse, rectangular (slightly contracted towards the apex), rectilinear ; the anterior angles depressed ; the sides marginate ; at the base is a broad transverse shallow depression, which is most distinctly apparent near the basal angles ; in front, also, are three depressions, — one medial longitudinal, distinct and deep, the others lateral and more obsolete ; the surface very finely punctate through- out ; the colour a dark brown. Scutellum large, triangular, impunc- tate. Elytra much broader than the thorax, depressed, punctate- striate, the punctures in the stria? being almost obsolete, and clothed throughout (when viewed under a high power) with a very fine pu- bescence ; the surface of a deep-brown colour, which is broken ante- medially and near the base by two irregularly-formed transverse markings of a pale flavous colour : the one which is antemedial is obliquely transverse, extending in the direction of the scutellum ; it consists of several (four to six) short longitudinal lines, connected one with the other anteriorly; the postmedial transverse marking is also very irregular in form, and does not extend to the suture : at the margin of the shoulders, also, is an indication of this same pale flavous colour. Antenna? robust, dilated towards the apex ; the joints one to six flavous, suffused with fuscous ; seven, eight and nine piceous, ten and eleven testaceous. Legs flavous throughout, the apex of the femora and the tibia? and tarsi being suffused with piceous. Venezuela. In the collection of M. Chevrolat. 107 Genus 14. EUPEGES*. Labrum breve, subcirculare. Palpi maxillares minuti, art. 3ti0 elongate, et ad apicem dilatato, art. ultimo conico. Palpi labiales attenuati. Antenna approximate, sat robustce, filiformes. Capet transversum, antice hand productum. Thorax transversus, latus, ad latera subrotundatus. Elytra sat robusta, subparallela et cylindrica. Pedes : ant. tarsi breves, art. 3ti0 lato et bilobo ; tibia posticce sim- plices, nee sinuate nee dente armatce ; tarsi breves et attenuati, art. 1'"° et 2nd" subcequalibus, 3th minuto et subcirculari. Labrum short, subcircidar. Mandibles robust, sinuated or dentated at the inner margin near the base, at the apex acuminate. Maxillary palpi (PI. IV. fig. 4 m) elongate, minute ; the basal joint obsolete ; the second slightly dilated at the apex ; the third longer than the second, the length being equal to three times the breadth, and dilated at the apex ; the apical joint conical. Labial palpi (PI. IV. fig. 4 n) attenuated, filiform. Antennae approximate, situated below the inner margin of the eyes, sufficiently robust, filiform ; the first joint elongate, slightly inflected outwards, and subdilated towards the apex ; the second short, ovate ; the third not quite so long as the first, narrow, subdilated at the apex ; the fourth and fifth equal in length. Eyes globose, situated at the base of the head. Head depressed (not porrect), transverse, narrower than the thorax, not produced anteriorly. Thorax transverse, much broader than the head, relatively broader (as compared with the head and the elytra) than in Hypaniherus and Thrasygceus, constricted in front ; the sides subsinuate and margi- nate. Elytra robust, perceptibly, but not considerably, broader than the thorax, slightly rounded at the sides, finely punctate or impunctate, glabrous. Scutellum triangular, situated on the same plane as the elytra. Legs : the anterior femora and tibia? robust. The tarsi short ; the first and second joints not so broad as the apex of the tibiae, subequal in length ; the third broader and distinctly bilobed ; the apical claw * ev, bene ; n^yvv^i, firmo, 10S EUrEGES. is bifid, and armed at its inner surface with an obsolete tooth. The posterior femora are incrassated. The tibia (Tab. IV. fig. 4g) is short, inflected at its immediate base, and gradually thickened to- wards the apex ; when viewed from behind, the posterior surface is slightly grooved longitudinally, simple (not sinuate or armed with a spur) ; the apex is obliquely truncate and simple at the extremity, without any terminal claws. The tarsi (Tab. IV. fig. 4 h) are at- tenuate and short ; the first and second joints subequal ; the third shorter and circular; the apical joint is broadly inflated at its ex- tremity. This genus is distinguishable from all others (except Hydmosyne) by its robust, subparallel and ovate form, depressed (not cylindrical), by the breadth of its thorax, and by its unarmed posterior tibiae ; from Oinops it may be separated by its less porrect head, by the structure of its maxillary palpi, and also by its unarmed tibia). The species composing it will probably, hereafter, be subdivided into two separate genera. There is a manifest contrast in fades between E. prmclara and the two other species : the former insect is distinctly oval, the humeral angles of the elytra are less prominent, and the lateral Hue of the thorax is almost continued in the line of margination of the elytra ; in E. scabrosa the shoulders are prominent, the sides of the elytra are more parallel, and the thorax is less broadly transverse ; the ultimate joint of the anterior tarsus is also, in the former species, more deeply bilobed. 1. Eupeges prseclara. (Tab. IV. fig. 4.) E. ovalis, robusta, subcylindrica, nitida ; capite lato, transverso, de- presso, punctato, rufo ; thorace transverso, sat magno, ad basin lato, sensim versus caput constricto, impunctato, rufo ; elytris ro- bustis,punctis obsoletis veluti in striis ordinatis,purpureo-cyaneis, nitidis; antennis haud elongatis, robustis, rufo-testaceis ; pedibus etiam rufo-testaceis. Long. corp. 3| lin., lat. If lin'. Oblong, oval, robust, shining. Head transverse, short, depressed, much narrower than the thorax ; eyes small, prominent, not extend- ing to the anterior margin of the thorax ; above the base of the antennae is a transverse ridge (rendered more distinct by a medial depression behind it) ; surface of the head punctate, rufous. Thorax transverse, equate ; the anterior angles (which project beyond the head) are subacute and depressed ; the sides marginate ; the basal angles are in close proximity to the shoulder of the elytra ; the form of the thorax {broad at the base) is gradually constricted towards the anterior angles, although even at the apex it is considerably EtTPEGES. 109 broader than the head ; surface impunctate, rufous. Scutellum tri- angular, very darkly rufous. Elytra broad, robust, with punctures (very minute and obsolete) arranged in the form of striae ; glabrous, of a dark metallic blue colour. Antennas short, robust, with a ten- dency to dilatation towards the apex (from the fifth to the eleventh joints) ; the first joint dilated, inflected outwards, and nearly as long as the third and fourth together ; rufo-testaceous. Legs rufo-tes- taceous throughout. A single specimen, taken in the Amazon district by Mr. Bates, is in that gentleman's collection. 2. Eupeges scabrosa. E. ovalis, robusta, nigra ; eapite brevi, ad basin antennarum bitu- berculato,punctato,fusco-rufo ; ihorace transverso,punctato,fusco- rufo ; elytris subcylindricis, punctato-striatis, granidatis, nigris ; antennis Jiliformibus, fuseo-nigris ; pedibus rufis, tibiis tarsisque fuscis. Long. corp. 3^ lin., lat. 1-^ lin. Oblong, oval, subparallel, robust, black. Head short, transverse, slightly produced ; below the base of the antennae is a transverse tri- angular plane ; above the base of the antennae are two prominent tubercular elevations, which are more prominent by reason of a medial longitudinal fovea, and above them a transverse depression; eyes globose, situated nearly at the base of the head ; the surface of the head strongly punctate, impubescent, fusco-rufous. Thorax trans- verse, in front slightly emarginate ; the anterior angles are subacute and much depressed ; the sides are marginate, and in outline sub- sinuate ; near the basal angle (when viewed obliquely) is an obsolete depression ; the surface is deeply punctate, impubescent, and fusco- rufous. Scutellum triangular, pubescent, rufo-fuscous. Elytra sub- cylindrical, parallel, punctate-striate ; the punctures are entirely, and the striae almost, concealed by a clothing of short and coarse pu- bescence, which gives a generally scabrous appearance to the whole surface ; the colour black. Antenna} robust, filiform, the second and third joints being slightly attenuated ; fuscous-black, the two basal joints being suffused with rufous. Legs rufous, the anterior tibiae and tarsi fuscous. Brazil. 3. Eupeges nigrifrons. E. oblonqo-ovata, subparallela, depressa, subtiliter pubescem, pallid e flava; eapite brevi, tramverso, oblique foveolato, gramdato,flavo. 110 PHYLACTICTTS. ad basin nigro-fusco ; ihorace transverso, cequato, subgranulato ; elytris robustis, punctato-striatis ; antennis filiformibus, fuscis, ad basin fiavis ; pedibus fiavis ; tibiis tarsi sque fusco siiffusis. . Long. corp. 2\ lin., lat. \\ lin. Oblong-ovate, subparallel, slightly depressed ; when viewed under a high power clothed with a very fine pubescence throughout ; of a pale flavous colour. Head short, transverse, hardly produced ; above the labrum (which is fuscous) is a triangular plane depression ; at the insertion of the antennae is a minute, but distinct Y-shaped carination, immediately above which is a transverse fovea ; a subcir- cular or obliquely angulated fovea extends between the upper and inner margins of the eyes : the surface finely granulated throughout ; at the base fuscous-black, and below the insertion of the antennas flavous. Thorax transverse, rectangular, rectilinear; the anterior angles subdepressed ; the sides submarginate ; the surface equate, somewhat flat, and finely granulated. Scutellum triangular, im- punctate, fuscous. Elytra rather broader than the thorax, subparallel, punctate-striate, clothed throughout with a pale flavous pubescence, so fine that it does not conceal the striae or the punctures. Antenna robust, filiform, fuscous, the three basal joints being flavous. Legs : the anterior rufo-flavous, the posterior pale flavous, the tibiae and tarsi being suffused with fuscous. Brazil. In the collection of M. Chevrolat. Genus 15. PHYLACTICUS*. Labrum transverswm, subsinuatvm. Palm maxillares elongati, filiformes, art. 2"*V*3^ ad apicem dila- tatis. Palpi labiales subcylindrici. Antenna filiformes, sat robustce, aliquando ad apicem obsolete incras- satai. Caput verticale, vice productum, plerumque inter oculos foveolatum aut carinatum. Thorax transversus (interdum sidjquadratus), ad apicem pi 'us minus const rictus, depressus. Elytra robusta, brevia, ad apicem aliquando subattenuata. Pedes : tibiae anteriores ad basin ipsum curvata;, havd ad apicem di- latatce; tarsi breves, art. 2nd0 minuto, Sti0 lato : femora postica incrassatissima, subovata ; tibia; ad apicem subdUatati labiaxes elongati, art. penultimo subdilatato. Antennae approximate, ad apicem mbincrassatce, art. 3''", 4'° et 5'° cequalibus it attenuatis, <;'"_l(i""' /,,-< dims, robustis, art. ultimo jili rumaui attt nuato. Caput verticals, haud productum. Thorax transversus, rarissimt cequatus, subpubescens, et aut punctatus aut granulatus. Elytka lata, pl< ru/mque leviter tuberculata, plus minus ante medium transverse depressa, punctato-striata, pube vestita. Pedes robusti, tibiis posticis inarmatis. Labrum transversely subrotundate. Maocillary palpi (Front, fig. 6 rn) robust, cylindrical ; the basal joint minute ; the second and third of equal length, not incrassated at the apex (the second being somewhat narrower than the third) : the apical joint is much more attenuated than the rest, being at its base considerably narrower than the apex of the third joint ; its length is nearly double its breadth. Labial palpi (Front, fig. 6 n) elongate ; the penultimate joint slightly broader than the apical. Antennce approximate, situated between the lower margins of the * w/xos, humerus ; Tviceis, 10 et 11 testaceis ; pedibus nigro-fuscis, tibiis tarsisque posticis Jlavis. Long. corp. 2\ lin., lat. 1^ lin. Oblong-ovate, broad, complanate, irregularly clothed throughout with fuscous and also dark ferrugineous pubescence ; black. Head short, depressed, slightly elongated in front ; eyes tolerably large, situated not quite at the base of the head ; between the eyes (imme- diately above the base of the antennae) are two tubercles : the sur- face of the head in front is dark ferrugineous or piceous ; at the base granidated and dark piceous. Thorax quadrate (slightly transverse), somewhat compressed in front; the anterior angles subacute and depressed ; the surface complanate, punctate, dark piceous, clothed throughout with ferrugineous pubescence. Scutellum small, trian- gular, cinereous. Elytra subparallel, coarsely punctate-striate, the surface between the second and fourth striae (close to the shoulders) being raised ; clothed throughout with a dense, very short pubescence, as well as with longer, more erect and isolated hairs ; this pubescence is mottled throughout — piceous, ferrugineous, and ashy grey: a transversely-oblique postmedial fascia may be traced more distinctly, as of a decided tendency to ferrugineous (bounded on either side by indications of grey), while behind this the predominant shade is fuscous. Antennce incrassated towards the apex, short, tolerably robust ; the first joint fulvous, suffused with piceous ; the second fulvous ; third, fourth and fifth flavo-fulvous ; sixth to ninth piceous ; tenth and eleventh testaceous. Legs dark fuscous, the posterior tibiae and tarsi flavous ; the globular inflation over the posterior claw being bright red. This species appears to have a very extended range. I have examples before me from Mexico, from the Amazon district, and also from different parts of Brazil ; while among all these examples there is little or no perceptible variation either in size or in colour of pubescence. In the collections of the British Museum, Mr. Baly, Mr. Fry, and the Rev. H. Clark. 126 HOMOTYPHTTS. 5. Homotyphus squalidus. B.M. H. oblongo-ovatus, robustus, subpubescens, ferrugineus ; capite sub- producto, inter oculos bituberculato, punctato ; tJwrace quadrato, ad medium bituberculato, squamoso ; elytris Jatis, robustis, pune- tato-striatis, ferrugineo- et sparsim cinereo-pubescentibus, ad basin rufo-fuscis ; antennis brevibus, art. 6-10 incrassatis, 1-6 jiavis, 7-9 fuscis, 10 et 11 jiavo-testaceis ; pedibus robustis, fusco -ferr ug ineis. Long. corp. 2^-2| lin., lat. 1-1^ lin. Oblong-ovate, robust, subpubescent, ferrugineous. Head short, transverse, slightly produced : between the eyes (immediately above the base of the antennae) is a broad transverse ridge, divided by a medial depression so as to form two tubercles ; above this ridge are three obsolete longitudinal carinations, reaching nearly to the base of the head : the surface punctate and subpubescent. Thorax quadrate (slightly transverse) ; the anterior angles depressed ; the sides slightly marginate ; when viewed laterally, the base appears to be transversely subdepressed ; the surface in front is raised, and forms medially two tubercles ; the whole being clothed with thick squamose pubescence, fusco-ferrugineous, sparingly interspersed with flavous ; the surface beneath this appears to be coarsely punctate. Scutellum minute, triangular, flavous. Elytra broader than the thorax, robust, broadly punctate-striate, clothed throughout with thick, close, mottled pu- bescence ; pale ferrugineous, being interspersed with ashy-grey ; at the base the colour is more decidedly rufo-fuscous. Antennas short, robust ; the first joint broadly dilated ; the sixth to the tenth incras- sated ; first to sixth flavous ; the base of the sixth and seventh to ninth fuscous ; tenth and eleventh flavo -testaceous. Legs robust, fusco-ferrugineous throughout. This species differs from H. tubercidatus by its considerably smaller size, and from H. fuliginosus by the more ashy coloiu' of its pubes- cence, as well as by the coloration of the antennae ; from H. asper it may be recognized by the three obsolete longitudinal carinations at the base of the head, and from H. nodosus by the raised transverse carination immediately above the base of the antennae. Mexico. In the collection of the British Museum. 6. Homotyphus holosericeus. (Tab. V. fig. 1.) H. suborbicularis, subpubescens, flavus ; capite depresso, inter oculos foveolato, punctato ; thorace transverso (jpcene quadrato'), ad basin transverse depresso, flavo-pubescenti ; elytris subglobosis, punctato- striatis, pubescentibus, ad latera duabus maculis (et ad apicem HOMOTYIMII'S. 127 fuse in) suffusis, fiavo-testaceis ; antennis Jlavis, art. 7, 8 et 11 fusco-Jlavis ; pedibus Jlavis. Long. corp. 2 lin., lat. 11 lin. Ovate, suborbicular, subpubescent, flavous. Head short, and hardly produced ; below the base of the antennae is a transverse triangular impression ; between the eyes is an obsolete T-shaped fovea ; eyes tolerably large, globose, situated at the base of the head ; surface punctate. Thorax transverse (almost quadrate), rectangular; the anterior angles depressed and subacute ; at the base is a broad trans- verse postmedial depression : the surface is finely but thickly pubes- cent, flavous ; at the margins more distinctly flavo-pubescent. Scu- tellum obsolete, flavous. Elytra subglobose, considerably broader than the thorax, punctate-striate, thickly clothed throughout with pubescence ; flavous, with two suffused transverse bands (which be- come obsolete near the suture) and another near the apex (which is continued throughout) flavo- testaceous. Antennae filiform, tolerably robust, flavous, with the seventh and eighth and also the eleventh joints fusco-flavous. Legs flavous throughout. From the nighbourhood of Rio Janeiro. In the collection of Mr. Fry. 7. Homotyphus maculicornis. H. oblongo-ovatus, latus, robustus, subtiliter pubescens, punctatus, nigro-ferrugineus ; capite transverso, supra basin antennarum bitubermlato, ad basin granidato ; rufo-ferrugineo, ad basin piceo ; thorace quadrato, siibazquato, granulato ; elytris latis, punctato-striatis, punctis sat magnis, fulvo- et nigro-pubescenti- bus ; antennis ad apiceni subincrassatis, articulis 1-5 fiavis, 7-9 fiiscis, 10 et 11 Jlavis; pedibus robustis, fuscis. Long. corp. 2\ lin., lat. 1-^- lin. Oblong-ovate, broad, robust, finely pubescent, deeply punctate, of a dark ferrugineous colour throughout. Head transverse, deflected and slightly but broadly produced in front ; between the labrum and the base of the antennoe the siuface is transversely depressed ; immediately above the base of the antennae are two minute but very distinct tubercles, above which the surface is coarsely granulated : eyes tole- rably large, situated at the base of the head, extending laterally not quite so far as the anterior angles of the thorax : the surface (except at the base) is glabrous and rufo-ferrugineous ; at the base darkly piceous. Thorax broader than the head, transverse, rectangidar, at the sides very finely marginate ; the surface (when compared with other species in this group) is almost equate ; two almost obsolete 128 HOMOTYPHUS. tubercles are observable medially, near the anterior margin, wMle on either side of these, adjoining the anterior angles, is an indistinct depression ; near the basal angles, also, are two other obsolete de- pressions: the surface (when viewed under a high power) is very sparingly clothed with pubescence, and coarsely granulated. Scutel- lum small, triangular, rounded at the apex, im punctate, and fuscous. Elytra much broader than the thorax, robust, punctate-striate, the stria? being very indistinct, and near the suture obsolete, while the punctures are very large and deep : the surface is clothed with a close and very fine pubescence of a fulvo-ferrugineous colour, mottled throughout irregularly with ashy grey, and at the sides and base more distinctly fulvous. Antennae incrassated at the apex ; the first joint being long and dilated ; the second much shorter and narrower ; the third, fourth, and fifth of equal length, longer and slightly nar- rower than the second ; the sixth to the eleventh short and dilated, broader than the first and shorter than the second : in colour the first to the fifth are flavous, the first being suffused with fuscous, and the fourth and fifth and also the base of the sixth testaceous ; the seventh, eighth, and the apex of the ninth darkly fuscous ; the tenth and eleventh testaceous. Legs robust, fuscous throughout. This species may be distinguished from H. squalidus not only by its more close and differently coloured pubescence, but by the obso- lete stria? on its elytra, which in the latter species are well-defined. Mexico. From the collection of M. Chevrolat. 8. Homotyphus Wollastonii. H. ovatus, latus, subdepressus, fulvo-ferrugineus ; eapite granulato, subpubescenti, jiavo-rufo ; tJwrace transverso, rectangulari, ad basin subdepresso, granulato, jiavo-rufo ; elytris latis, punctato- striatis, fulvo-ferrugineis ; antennis ad apicem subincrassatis, testaceis, art. 7-11 {subincrassatis) rufo -testaceis ; pedibus fiavis. Long. eorp. If lin., lat. f-1 lin. Ovate, broad, subdepressed, subpubescent, fulvo-ferrugineous. Head short, abruptly transverse, hardly produced ; above the labrum is a transverse, triangular, slightly elevated plane (black) ; above the base of the antenna? (which are contiguous) is an obsolete fovea, in the form of the letter Y : eyes situated at the base of the head, and extending laterally as far as the anterior angles of the thorax : the surface is finely granulated, pubescent, and flavo- rufous. Thorax small when compared with the breadth of the elytra, transverse, rectangidar ; the sides slightly marginate and parallel ; at the base are two broad subdepressions ; the surface is granulated, finely .EDM0N. 129 pubescent and flavo-rufous. Scutettum small, triangular, rufous. Elytra broad, subdepressed, punctate-striate, the punctures being concealed by a very fine ferrugineous pubescence. Antennce short, attenuated, subincrassated towards the apex ; the first joint long, dilated at the apex and reflected backwards ; the second broad, short, ovate ; the third to the sixth long and fine (the fourth to the sixth being of equal length and shorter than the third) ; seventh to eleventh short and subincrassated ; the colour of the first to the sixth testaceous, seventh to eleventh rufo-testaceous. Legs flavous ; the globular in- flation over the posterior claw being brightly rufous. Bahia. In the collection of the Rev. H. Clark. Genus 18. .ffiDMON*. Labrttm breve. Palpi maxillares elongati, cylindrici, art. penidtimo robusto. Antenna subincrassatoi, pubescentes, art. 3-5 brevibus, attenuatis, 6-11 gradatim dilatatis. Oceli ad basin capitis positi. Caput breve, fere verticale. Thorax transversus, angulis anterioribus distinctis, lateribus ad basin subcompressis. Elytra lata, robusta, ad latera subrotundata. Pedes : tarsis anterioribus brevibus (art. 1 et 2 subcequalibus) ; tibiis posticis apicem juxta unidentatis. Labrum shorter than the base of the head, subcircidar. Maxillary palpi (Tab. V. fig. 2 m) elongate, cylindrical ; the second joint short, obliquely truncate at the apex ; the penultimate joint cylindrical, robust, the length being nearly three times the breadth ; the apical joint minute and conical. Labial palpi (destroyed in the single example of this genus be- fore me). Antennce robust, subincrassated, clothed throughout sparingly with pubescence ; at the apex of each joint are two or three rigid hairs (larger than the others) which project at almost right angles ; the first joint is subrotundate, broad, and elongate ; the second of the same form, but smaller ; the third to the fifth are subequal in length, shorter and considerably more attenuated than the first ; the sixth to the eleventh are gradually incrassated towards the apex, and shorter: the antennas, as to their insertion, are approximate, and * aiSws, verecundia. 1 30 ^DMON. situated between the lower margins of (not below) the eyes ; eyes large, lateral, situated at the base of the head, and extending late- rally nearly as far as the anterior angles of the thorax. Head short, transverse, inclined, but not abruptly, at right angles to the plane of the elytra, impubescent. Thorax transverse, slightly broader than the head ; the anterior angles are distinct and depressed ; the sides are marginate and sub- constricted towards the base. Scutellum small, triangular. Elytra broad, robust, slightly rounded at the sides, the greatest breadth being near the middle, punctate-striate, clothed throughout with fine pubescence. Legs : the anterior femora robust (constricted at the base), broadly truncate at the apex. The tibia} are abruptly inflected at the im- mediate base, gradually thickened towards the apex. The tarsi are short and sufficiently broad ; the first and second joints are trian- gular, of equal breadth with the base of the tibia, the second joint being rather smaller than the first ; the third joint is broader, sub- circular, slightly bilobed, and fringed with a margin of thick rigid pubescence ; the apical joint is longer than the third, narrow, and inflected and gradually incrassated towards the apex: the claw is bifid, and armed at its inner surface with a broad tooth. The poste- rior femora are broadly dilated, gradually tapering towards the apex. The tibia (Tab. V. fig. 2g) is short and robust, thickened towards the apex ; immediately in front of the insertion of the tarsus, the margi- nation of the posterior flattened side is produced into a distinct spur- like projection ; the apex is obliquely truncate, and armed at its extremity with a single incurved and strong tooth. The tarsus is elongated and narrow, the basal joint being longer and somewhat broader than the rest, triangular in form ; the second is of the same form as the first ; the third is minute and almost circular ; from its centre proceeds the insertion of the ultimate joint, which is narrow, and produced into a globular inflation above the terminal claw. The single example from which I have formed this genus presents abundantly distinguishing characteristics. The form of its maxil- lary palpi (elongate and cylindrical, not dilated) separates it at once from other subsequent genera, to which, in facies, it seems to be related ; while the pecidiar form and hirsute antennae, and the spur near the apex of the posterior tibia, as well as the relative lengths of the joints of the tarsus (without any reference to its general facies), forbid its being placed in any of the groups to which, by the form of its palpi, it is most nearly allied. TLEUROCHROMA. 131 1. .ffidmon sericellum. (Tab. V. fig. 2.) Khtg (and. Cheer. Coll.). JSi. oblongo-ovatum, subparallelum, sat robustum, pubescem, Jlavo- testaceum ; capite brevi, ad basin antennarurn T foveolato, punc- tato ; ihorace transversa, ad basin depresso, punctata ; elytiris punctato-striatis, ante medium transverse depressis, flavo-pabes- centibus ; antennis robust! s, ad apicem incrassatis, Jlavis, articidis 10 et 11 fuse 'is ; pedibus jlavis. Long. eorp. j- lin., lat. f- lin. Oblong-ovate, subparallel, tolerably robust, finely pubescent, flavo- testaeeous. Head short, transverse, hardly produced ; immediately above the base of the antennae is a medial longitudinal fovea, which is terminated at its upper extremity by a transverse channel extend- ing at right angles to it between the eyes, these channels forming together the character of the letter T : eyes large, black, situated at the base of the head, extending laterally not quite so far as the an- terior angles of the thorax : the surface finely punctate throughout. Thorax transverse, the anterior angles depressed, the sides margi- nate ; at the base is a shallow transverse depression ; the surface finely punctate throughout. Scutellum triangular. Elytra some- what broader than the thorax, subparallel, distinctly punctate-striate ; an antemedial transverse depression gives an appearance of promi- nence to the base ; the surface is clothed throughout with fine and sparingly distributed flavous pubescence. Antenna' robust, somewhat incrassated towards the apex, clothed distinctly with several hairs of unequal length at right angles to the joints of the antennae ; the first joint longer than any of the others, and dilated at its apex ; the second broad, short, ovate ; the third to the sixth of equal length, not longer than the second, and attenuated ; the seventh to the eleventh short and dilated ; in colour, the first to the ninth flavous, the tenth and eleventh fuscous. Legs flavous throughout. Porto Bico. In the collection of M. Chevrolat. Genus 19. PLEUR0CHR0MA*. Man"dibul.e robustoe, simplices. Palpi maxillaees elongati, fiUformes, hand dilatati, art. pemdtimo subincurvo, ultimo rninuto. Palpi labiales auam rnaxilJares latiores. AntexXxK breves, ad apicem subincrassatce. Caput breve, verticals, plerumque inter oculos depressum. * irXevpd, latus ; xpu>/j,a, color. k2 132 PLETTROCHRONA. Thorax transversus, latus, rectangularis, glaber. Elytra parallela, lata, robusta, plerumque punctato-striata, et Icete colorata, glabra. Pedes: tibiis postltis brevibus, simplicibus, ad apicem, a posteriori, marginatis et subsinuatis. Labrum short, subcircular in outline. Mandibles robust, simple. Maxillary palpi (Tab. V. fig. 3 m) elongate, filiform, not dilated ; the second joint is short, transversely truncate at the apex ; the third elongate, slightly incurved, the length being three times the breadth ; the ultimate joint is minute and conical. Labial palpi (Tab. V. fig. 3 n) perceptibly broader than the maxil- lary, acuminated. Antenna} approximate, situated below and between the inner mar- gins of the eyes, robust, short, inerassated at the apex ; the basal joint broad and elongate; the second narrower, short, ovate; the third to the fifth narrow at their base, dilated towards the apex, narrower and longer than the second; the sixth to the eleventh slightly broader, shorter, transverse at the apex and rounded at the base. Eyes lateral, situated at the base of the head, subglobose. Head short, transverse, depressed at right angles to the plane of the elytra, narrower than the thorax, not produced in front, generally obliquely or transversely depressed between the eyes ; impubescent, glabrous. Thorax transverse, rectangular, rectilinear, the anterior angles depressed, the sides depressed and marginate ; equate ; impunctate, glabrous. Scutelhm large, triangular, impunctate. Elytra broader than the thorax, short, robust, subdepressed, the sides somewhat dilated medially; generally punctate-striate, gla- brous. Legs : anterior femora robust, slightly dilated towards the middle. The tibios are short, incurved abruptly at the immediate base, gra- dually and slightly thickened towards the apex. The tarsi are short and broad ; the basal and second joints being of subequal length ; the third broader and slightly bilobed, the margin being fringed with a rigid and thick pubescence ; the terminal joint is narrow and slightly incurved, and dilated towards the extremity : the claw is bifid and simple. The posterior femora are short, inerassated, and rounded at their upper margin. The tibios (Tab. V. fig. 3 g) are short, not incurved, gradually but slightly thickened towards the apex ; the posterior outline above the insertion of the tarsus is sub- PLEUKOCHKOMA. 133 sinuate (not armed with a distinct spur), and obliquely truncate at the apex. The tarsi are short and attenuated; the two basal joints minute and triangular ; the third subcircular, and the fourth elon- gated, and dilated at its extremity into a globular inflation, which completely conceals from above the terminal claw. This pretty little group of insects readily separates itself from all others : its broad depressed surface (not subglobose, as in Leptotrichm or Homotyphus) and its more filiform antennas at once abundantly distinguish it ; it differs also materially in the form of the maxillary palpi, which are somewhat more elongate than in Homotyphus and decidedly shorter than in Leptotrichus ; its general facies is depressed, subparallel, broad, impubescent, and brightly coloured. From Pan- chreetus it differs in its less globose body, in the form of its antennae, and in its simple, unarmed posterior tibiae. 1. PleurochroHia balteatum. (Tab. V. fig. 3.) P. oblongo-ovale, robustum, subcylitidricum, nigrum, nitidum; capite brevi, depresso, inter oculos ruyoso, ad basin punctulato, niyro- rufo ; thorace transverso, antice subcoarctato, subpunctato, et obso- lete vermiculato, niyro-rufo ; elytris latis, p>unctato-striatis, ad apicem obsolete pimctatis, niyris, vitta media transversa rufa ; an- tennis brevibus, ad basin rujis, ad apicem fuscis ; pedibus rufo- testaceis. Long. corp. 2 lin., lat. 1 lin. Oblong-oval, robust, subcylindrical, black, shining. Head short, depressed, not produced ; eyes tolerably large, situated at the back of the head, not extending laterally as far as the line of the margin of the thorax ; the surface between the eyes rugose, above sparingly punctate, dark rufous. Thorax not quite so broad as the elytra, transverse, rectangular, slightly coarctate in front; the anterior angles depressed ; sides marginate ; the surface equate, subpunctate, with short minute impressed lines thickly interspersed among the punctures ; dark rufous. Scutellum triangular, rufous. Elytra some- what broader than the thorax, subcylindrical, with rows of punc- tures arranged in the form of striae (these punctures become obsolete towards the apex) ; black, with a broad transverse medial band of rufous extending from the margination and slightly widening as it approaches the suture. Antemue short, subclavate, at the base ru- fous, towards the apex fuscous. Leys rufo- testaceous. From the district of the Amazon. In the collections of Mr. Baly, Mr. Bates, and the Rev. H. Clark. 134 PLETJROCriROMA. 2. Pleurochroma nitidulum. P. oblongo-ovale, breve, robustum, nigrum; capite brevi, inter oculos T foveolato, punctato,rufo ; iliorace transverso, rectangulari, sub- punctato, rufo ; elytris robustis, striato-punctatis, nigris, nitidis : antennis subincrassatis, robustis, flavis, ad apicem fuscis ; pecli- busjlavis. Long. corp. 2\ lin., lat. 1| lin. Oblong-oval, short, robust, black. Head short, narrower than the thorax, transverse, depressed, slightly elongated; eyes large; be- tween the eyes, and above the base of the antennas, is a shallow T- shaped depression; the surface punctate, rufous. Thorax broader than the head, but distinctly narrower than the elytra, equate, transverse, rectangular ; the anterior angles depressed, sides margi- nate ; surface finely punctate, rufous. Scutellum triangular, fuscous and rufous. Elytra broad, robust, slightly rounded at the sides, with rows of punctures arranged as striae (these punctures become obsolete towards the apex) ; black, shining. Antenna; short, sub- clavate, robust; at the base flavous, at the apex fuscous. Legs flavous. This species differs from the preceding by the form and sculpture of the thorax, and also by the absence of the rufous band on the elytra. Amazon district. A single specimen, in the collection of Mr. Baly. 3. Plenrochroma pallidum. P. oblongo-ovale, robustum, subcylindricum, rufmn ; capite brevi, de- presso, super antennarum basin longitudinaliter depresso, punc- tato ; iliorace transverso, ad apicem constricto, vermicidato ; ely- tris latis, striato-punctatis ; antennis brevibus, sididavatis, ad basin ful vis, ad apicem fuscis ; pedibus rufo-testaceis. Long. corp. 2i lin., lat. 1^ lin. Oblong-oval, short, robust, subcylindrical, rufous throughout. Head short, depressed, not produced ; eyes large, extending laterally not so far as the sides of the thorax ; above the insertion of the an- tenna? is a longitudinal depression, dividing into two parts a trans- verse slightly raised plane, which is smoother than the rest of the head ; surface punctate. Thorax transverse, rectangular, somewhat compressed towards the apex ; the anterior angles depressed, sides marginate ; the surface smooth, vermiculate (with short irregular impressed Hues). Scutellum triangular. Elytra broad, rounded at the sides, with punctures arranged in the form of stria? ; these punc- tures become obsolete towards the npex. Antennae short, subclavate ; LEPTOTRICHUS. 135 at the base fulvous, at the apex fuscous. Legs rufo -testaceous throughout. From the Amazon district. A single specimen, in the collection of Mr. Baly. Genus 20. LEPTOTRICHUS*. Paxpi maxillares elongati et attenuati, art. penultimo cylindrieo. Palpi labiales robustiores, art. 2nd" lato et ad apicem oblique truncato. Antennje dilatator, articulo tertio brevi, subpubescentes. Caput breve, transversum, haud productum, verticale. Thorax inclinatus, subconvexus, transversus, latus. Elytra robusta, brevia, subcylindrica. Pedes: tibiis postkis ad marginationem posterior em inarmatis, in cal- car ad apicem productis. Labrum narrow, subcircnlar. Maxillary palpi (Tab. V. fig. 4 m) elongate, much more so than in PleurocJiroma, and attenuated ; the basal joint minnte ; the second slightly dilated towards the apex (which is obliquely truncate), the length being nearly double the breadth ; the penultimate joint is nearly double the length of the second, and almost cylindrical ; the apical joint is minute and conically elongate. Labial palpi (Tab. V. fig. 4 rc) more robust than the maxillary, the second joint being broad and (apparently) obliquely truncate both at the base and apex ; the apical joint minute. Antennae approximate, situated at the inner and lower margin of the eyes ; broadly incrassated, more distinctly so than in PleurocJiroma or Homotyplius ; the basal joint elongate, dilated gradually towards the apex, and inflected outwards; the second almost as broad as the first, short, ovate ; the third is attenuate, not so long as the first, slightly thickened at the apex ; the fourth is of the same form as, but shorter, and a trifle more robust than the third ; from the fifth to the tenth the joints are shorter, very robust, transverse, and abruptly truncate ; the apical joint is narrower and more elongate ; the whole are clothed with a short thick pubescence. Eyes not quite so prominent as in the preceding genera, lateral, situated at the base of the head, and extending laterally not so far as the anterior angles of the thorax. Head short, transverse, not produced (but subattenuatcd) in front, depressed at right angles to the plane of the elytra. Thorax broader than the head, robust, inclined, depressed at the * \fc-7rr6s-, tenuis ; Opig, coma. 136 LEPTOTRICHUS. anterior angles and the sides ; more convex than in the preceding genus ; in form transverse, slightly compressed in front, comparatively much broader than in the next genus. Scutellum broadly triangular, pubescent. Elytra robust, short, subcylindrical, much more robust and broader than the thorax ; more convex than in the preceding genus. Legs : anterior femora short, robust, slightly dilated medially. The tibice are short, inflected abruptly at their immediate base, somewhat thickened towards the apex. The tarsi are sufficiently broad ; the two basal joints subelongate and triangular (the second being smaller than the first) ; the third is transversely subcircular, deeply bilobed, and margined with a deep, dense fringe of rigid pubescence ; the apical joint is attenuate and gradually thickened, as well as in- flected towards the apex : the terminal claw is bifid, and armed at the inner surface with an obsolete basal tooth. The posterior femora are, when viewed transversely, broadly incrassated, short, rounded at the upper surface, extending nearly to the apex of the elytra. The tibice are short, robust, inflected at the immediate base, slightly attenuated medially ; at the apex broadly obliquely truncate, and at the angle of truncation slightly dilated ; the socket which receives the base of the tarsus is simple (not armed with cornb-like teeth), and produced apically into a single well-developed spur. The tarsus is inserted at some little distance from the apex of the tibia, short, and much narrower than those of the anterior feet ; the first and second joints are triangular in form and elongate ; the third not broader, subcircular, and almost bilobed ; the last joint is attenuated, and produced apically into a broadly inflated globular projection, which completely conceals from above the terminal claw. This genus may be distinguished from all allied to it, by its distinctly elongated maxillary palpi, and also by its robust body and dilated antenna? from the preceding genus. 1. Leptotrichus castaneus. (Tab. V. fig. 4.) L. ovatns, 7'obustus, lotus, castaneus, Jlavo-pubescens ; capite antice foveolato; thorace transverso,punctato, ad latera flavo-pubescenti ; scutello pubescenii ; eh/tris robustis, punctatis, ad apicem latera- que pubescentibus ; antennis validis, fortiter incrassatis, art. 1—5 jlavis, 6-11 nigris ; pedibus flavis. Long. corp. 2\ lin., lat. 1| lin. Ovate, short, robust, castaneous, flavo-pubescent. Head short, not produced ; below the base of the antennae is a transverse trian- gular depression ; above the base, between the eyes, is an obsolete T-shaped fovea (forming within it two slight elevations); surface PANCUBESTTTS. 137 punctate, impubescent. Thorax broadly transverse, the upper sur- face subcylindrieal ; the anterior angles much depressed ; the surface distinctly punctate, at the sides flavo-pubescent. Scutellum trian- gular, thickly pubescent. Elytra robust, broad ; on either side is an antemedial transverse depression, which does not reach the suture ; surface punctate, the punctures being less distinct at the apex and arranged in the form of striae ; at the apex and sides flavo-pubescent. Antennas short, robust, broadly incrassated towards the apex ; the first joint is long, deflected outwards, and dilated at the extremity; the second broad, short, ovate; the third and fourth slender, not equal in length to the first ; the sixth to tenth broadly dilated ; the first and second flavous, third to fifth flavo-testaceous, sixth to eleventh black. Legs flavous. From the neighbourhood of Ega, River Amazon. In the collections of Mr. Bates and the Eev. H. Clark. Genus 21. PANCHRESTUS*. Palpi maxillaees cylindrici, rohusti, haud attenuati. Palpi labiales breves, ovati. Antent^e sat robusto3, dilatatos, art. 3''° et l"w a>qualibus. Caput breve, subproductum, plerumque verticale. Thobax transversals, interdum ad latera angulatus, plerumque punc- tata, aut granulatus. Elytba robusta, plerumque ante medium transverse depressa, punctato- striata, interdum obsolete pube vestita. Pedes: tibia? posticcv simplices, hand dente armatae,, breves. Labrum narrow, more contracted than the base of the head, trans- verse, and rounded at the margins. Maxillary palpi (Tab. V. fig. 5 m) elongate, but medially some- what more dilated, and altogether shorter and more robust than in the preceding genus ; the penultimate joint is almost as broad as it is long, and the terminal joint broader at the base and less atte- nuated than in the genus Leptotrichus. Labial palpi (Tab. V. fig. 5 n) short, ovate. Antennce approximate, situated between and below the inner margin of the eyes, sufficiently robust, medially dilated, not so broadly as in the preceding genus ; the basal joint is long, dilated medially and towards the apex; the second shorter and narrower, ovate, transversely truncate at the apex; the third attenuated, longer (slightly) than the first (in the preceding genus this joint is distinctly * ttuv, omnino; xP'/tos, bonus. 138 PANCHKESTUS. shorter than the basal joint) ; the fourth equal in form to, hut shorter than, the third ; the fifth to the eleventh of equal length with, hut much broader than, the fourth ; the ultimate joint being attenuated. Eyes large, globose, lateral, distant, situated at the base of the head, and extending laterally almost as far as the anterior angles of the thorax. Head short, transverse, somewhat produced in front, inclined at right angles to the plane of the elytra. Thorax broader than the head, transverse, narrower in proportion and less robust than in the preceding genus ; the sides depressed, marginate, and more or less obsoletely subsinuate in outline (occa- sionally dentate) ; for the most part deeply punctate or granulated, and very finely pubescent or glabrous. Scutellum small, triangular, depressed below the plane of the elytra, sometimes apparently obsolete. Elytra robust, broader than the thorax, not so convex as in the preceding genus ; an antemedial transverse depression gives a pro- minence to the anterior angles ; the surface is punctate-striate, and in most cases covered sparingly with obsolete pubescence. Legs: anterior femora siibcylindrical, straight, hardly dilated me- dially. The tibice are abruptly incurved at the immediate base, straight, gradually but slightly thickened towards the apex. The tarsi are short; the first joint elongate, triangular; the second shorter but somewhat broader than the first ; the third much broader, subcircular in form, and slightly bilobed ; the apical joint is not so elongate as in other genera, attenuate, slightly incurved, and in- crassated towards the terminal claw, which is bifid and simple (a rudimentary tooth (almost obsolete) may be traced at the base of the inner surface). Posterior femora incrassated (when viewed from the side), ovate, gradually tapering towards the apex ; the surface near the apex being subsinuate in outline, or hollowed out, near the insertion of the tibia. The tibia is short, straight, slightly incrassated at the extreme apex, where it is obliquely truncate, terminating below the insertion of the tarsus in a single, strong incurved spur. The tarsus is short and attenuated; the two first joints are trian- gular, broadly truncate at the apex ; the third subcircular, broader than the basal joints, bilobed, and fringed at its margin with dense rigid pubescence ; the apical joint is dilated into a globular inflation covering the ultimate claw. This genus, more closely allied to the latter (Leptotriehus) than to any others, may be readily separated from it by its less convex form, less elongated and attenuated palpi, by its narrower thorax, and less incrassated form of antenna:. PANCIIRESTTTS. 139 1. Panchrestus pulcher. P. ovatus, robust us, subpubescens, rufus, nitidus ; capite brevi, antice siittproducto, suhtditer granulato ; thorace transverso, ad latent obsolete dentato, crebre punctato ; elytris brevibus, robustis, striato- punctatis, sparsim fulvo-puhescentibus ; antennis brevibus, ad apieem incrassatis, art. 1-5 Jtavis, 6-11 nigris ; pedibus pallide rufis autflavls. Long. corp. 2± lin., lat. 1^ lin. Ovate, robust, subpubescent, bright red, shining. Head short, de- pressed (almost vertical), produced in front ; labrum black ; eyes tole- rably large, distant, situate at the back of the head, and extending laterally nearly to the anterior angle of the thorax ; surface closely granulated and rufous. Thorax transverse ; the anterior angles de- pressed ; the sides marginate and irregular in outline, projected ante- medially in the form of a tooth ; surface coarsely and thickly punc- tured. Scutellum very small. Elytra short, broad, robust, with punctures arranged in the form of stria?, bright rufous, clothed very sparingly with fulvous pubescence. Antennae short, robust, incras- sated towards the apex ; joints first to fifth flavous or fusco-flavous ; sixth to eleventh considerably incrassated and black. Legs pale red or flavous throughout. I cannot but feel it to be probable that this insect may (with others hereafter to be discovered) constitute a separate genus : in its abbre- viated form (its transverse thorax and robust elytra), coupled with its short and incrassated antenna), and the peculiar vertical form of the head (which approaches to Loscoprosopus), not to mention the lateral angular projection in the marginatum of the thorax, it pre- sents several points of difference from its allies. From the district of the Amazon. Collected by Mr. Bates. 2. Panchrestus rubicimdus. B.M. P. ovatus, robustus, rufus, subpubescens; capite brevi, inter oculos oblique foveolato ; thorace crebre punctato ; elytris valde punctato- striatis, subpubescentibus ; antennis ad apieem dilatatis, art. 1-5 testaceis, 6-11 nigro-fuscis ; pedibus testaceis. Long. corp. 2 lin., lat. 1 lin. Ovate, broad, robust, rufous, subpubescent. Head short, slightly depressed ; eyes large, somewhat prominent ; below the base of the antennae is a transverse triangular depression ; immediately above the antenna) is an obsolete, obliquely transverse fovea, in the form of the letter V : surface thickly punctured. Thorax transverse; the 140 PANCHRESTUS. anterior angles depressed ; the sides marginate ; surface thickly punctate, suhpuhescent. Scutettum triangular. Elytra broad, robust, coarsely punctate-striate, more obsoletely towards the apex (the striae being broader and the punctures deeper than in P. pulcher), subpubescent (but more distinctly pubescent than in pulcher) ; a slight antemedial depression extends transversely behind the shoulders. Antennce tolerably robust, short, dilated towards the extremity ; the joints first to fifth pale testaceous, sixth to eleventh dark fuscous. Legs testaceous throughout. This species closely resembles P. pulcher, appearing at first sight to be merely a pale and small variety of that species ; it is, however, distinctly separated (as well as by its smaller form and paler colour) by the form of its head, which is less produced and more attenuated towards the labruru ; by the punctuation on the elytra, which is more distinct and deep ; by the general sidpubescent (instead of glabrous) character of its surface ; and by the disposition of colouring on the antennae, the transition being abrupt from testaceous to fuscous, and not suffused as in the case of P. pulcher. Ega (Eiver Amazon). In the collection of Mr. Bates, and also in that of the British Museum. 3. Panchrestus inconspicuus. (Tab. V. fig. 5.) P. oblongo-ovalis, fusco-rufus, subp>ubescens ; capite {inter oculos) foveolato ; thorace crebrepunctidato ; elytris robustis, leviter punc- tato-striatis ; antennis ad medium dilatatis, art. 1-4 ferrugineis, 5-8 dilatatis, nigris, 9 testaceo, 10 et 11 nigris ; pedibus fusco- rufis. Long. corp. 2 lin., lat. 1 lin. Oblong-ovate, tolerably robust, fusco-rufous, subpubescent. Head small, short, produced, attenuated near the mouth ; eyes large, pro- minent, but not extending laterally as far as the angles of the thorax ; immediately above the base of the antennae is a short medial fovea, produced (when viewed from the front) in the form of an obsolete carination to the base of the head ; at the inner margin of the eyes is also an oblique depression, which (in conjunction with the medial line) gives an appearance of elevation to the intermediate surface. Thorax transverse, rectangular; the anterior angles slightly de- pressed ; the sides marginate ; at the base is a slight depression, ex- tending obliquely upwards towards the anterior angles ; the surface finely and thickly punctate, subpubescent, especially towards the sides. Scutellum small, triangular. Elytra robust, finely punctate- striate (more obsoletely towards the apex), subpubescent, especially PANCnitESTUS. 141 at the apex and sides. Antennce robust, incrassated towards the middle ; joints first to fourth ferrugineous, fifth to eighth (which are dilated) black, ninth testaceous, tenth and eleventh black. Legsj. the posterior femora short and broadly dilated ; the colour through- out fusco-rufous. From the neighbourhood of Santarem (River Amazon). Taken by Mr. Bates. 4. Panchrestus rafescens. (Tab. V. fig. 6.) B.M. P. latus, robustus, subpubescens, punctatus, rufo-ferrugineus ; capite punetidato ; ihorace transverso, angulis anticis subacutis, ad latent marginato et {ad medium) angulato, angulis postieis obli- que truncatls, punctato ; elytris striato-punctatis ; antennis ro- bustis, ad apicem subdilatatis, jiavis, art. 6-11 picels ; pedibus testaceis, femorlbus postieis rufo-flavis. Long. corp. 2 lin., lat. 1 lin. Ovate, broad, parallel, subpubescent, punctate, of a pale rufo- fcrrugineous colour throughout. Head short, hardly produced in front ; above the labrum is a transverse triangular depression ; above the base of the antennce, between the eyes, is an obsolete Y-shaped fovea ; eyes globose, oval, lateral, situated at the base of the head ; the surface of the head is finely punctate. Thorax transverse, slightly broader than the head ; the anterior angles are depressed and sub- acute ; the sides marginate, the margination being produced ante- medially and laterally into a distinct angle (somewhat resembling in form the genus Oetogonotes) ; the posterior angles are distinctly ob- liquely truncate ; at the base is an obsolete subcircular depression ; the surface is coarsely impressed with shallow punctures. Scutellum triangular, impunctate, situated below the plane of the elytra, testa- ceous. Elytra broad, parallel, antemedially transversely depressed, punctate, sparingly flavo-pubescent. Antennce robust, subincrassated towards the apex ; the joints three to five are subequal in length and attenuated, the rest short and slightly dilated; flavous, the joints six to eleven being piceous. Legs testaceous, the posterior femora and inflation of the apical claw being rufo-fiavous. This species differs from P. rubicundus in its paler colovu', its gla- brous elytra, and the character of the punctuation on its elytra, which is not so coarse and less frequent ; from P. pideher it differs by its distinct (not obsolete) punctuation, while from P. inconspicuus it may readily be separated by the angular margination of its thorax. A single specimen, taken by Mr. Bates at Santarem, in the district of the River Amazon, is in the collection of the British Museum. 142 HYLODROMUS. Genus 22. HYLODROMUS*. Palpi maxillares breves, sat robust!, art. apicali hand elongate. Antennae dilatatoe et subcomplanatm, art. 3-6 hicrassatis et brevibus, art. 7-11 elongatis et filif 'omnibus. Caput breve, verticcde, antice subproductum. TnoRAX transversus, ad basin constrietus et transverse depressus. Elytra sat lata, robusta, depressa (Jiaud conveoca). Pedes : tibiis posticis sensim dilatatis, et ad apicem ipsum bicalcaratis ; tarsis brevibus. Labrum transverse, sinuate, narrow. Maxillary palpi (Tab. V. fig. 7 m) short, tolerably robust ; the penultimate joint cylindrical and short; the terminal joint rounded, not attenuated. Labial palpi (Tab. V. fig. 7n) obscure in the single example of this genus before me. Antenna; very remarkably incrassated and fattened ; the basal joint long, dilated towards the apex and inflected outwards ; the second very short, ovate ; the third to the sixth broadly dilated and short, the sixth being somewhat longer but narrower than the fifth, and the fifth and sixth broader than the others ; the ultimate joints are abruptly attenuated and filiform. Eyes large, lateral, situated at the base of the head, extending laterally as far as the lateral angles of the thorax. Head short, transverse, abruptly deflected at right angles, at the insertion of the antennoe, and, when viewed transversely, approaching the form of Loxoprosopus ; in front slightly produced. Thorax transverse, slightly broader than the head ; the anterior angles acute and prominent ; at the base constricted and depressed. Scutellum triangular, situated in the plane of the elytra. Elytra broader than the thorax, robust ; the anterior angles well defined ; the surface is depressed (much less convex than in the pre- ceding genera) and punctate-striate, faintly pubescent. Legs : anterior femora straight, perceptibly thickened towards the middle. Tibia' short, straight, cylindrical. The tarsi are more ro- bust ; the basal joint is elongated and triangular in form ; the second shorter ; the penultimate rounded, broader than the basal joint, ob- soletely bilobed, and fringed around its margin with a dense rigid pubescence ; from the centre of the third joint proceeds the terminal joint, elongated, sensibly thickened towards the apex, and incurved : the claw is bifid, simple, unarmed by any inner tooth. The posterior femora are incrassated (not so broadly as in the preceding genus, Panchrestus), ovate, gradually tapering towards the apex. The tibia * v\i), nemus ; Fpo/ios, cursus. HYLODUOMUS. 143 is abruptly incurved at its immediate base, straight, and at the apex sensibly dilated and obliquely truncate, terminating ultimately in two strong curved spurs below the insertion of the tarsus. The tarsus is short and attenuated ; the first and second joints being- elongated, and dilated at the apex (the second being somewhat smaller than the basal joint) ; the third is broader, subcircular, and clothed at its margins with a dense pubescence ; the apical joint is elongated, and produced into a globular inflation, which quite conceals, from above, the terminal claw. This genus is a connecting link between several of the preceding genera and Loccoprosopus : with the former it is connected by its non- incrassated palpi ; with the latter by its parallel and depressed cylin- drical body. I have no means of ascertaining how far the extraordinary dilata- tion of the antennae may be sexual, as is the case in other genera in which the form of the antennce is abnormal, — as mPhysimerus, where the incurved apical and broadly flattened basal joints are found only in the males, and in Loccoprosopus, where the males alone possess the very elongated antennae. 1. Hylodroinus dilaticornis. (Tab. V. fig. 7.) H. oblongo-ovalis, subdepressus, subpubescens, fuscus ; capite brevi, ad basin antenna rum prominulo ; thorace quadrato, ad basin constricto, crebre punctato, subpubescenti, Jiavo ; elytris sat ro- bustis, subcylindricis, punctato-striatis, subpubescentibus, nigro- ftisris (ad apicem rufo-suffusis) ; antennis, art. lmo elongato, a 3tw gradatim ad 6'"'" maxime incrassatis, 7''>«_11»«> abrupte et tenue Jtliformibus, flavis aut fusco-rujis ; pedibus, anterioribus jlavis, liosticis jiavo -ferrugineis. Long. corp. 1| lin., lat. | lin. Oblong-ovate, subdepressed, broad, subpubescent, fuscous. Head not so transverse as in allied genera, vertically depressed, hardly elongated ; eyes large, prominent, situated nearly at the base of the head, and extending laterally as far as the angles of the thorax : between the eyes (nearer to their lower surface) is a distinct eleva- tion, upon which is situated the base of the antenna) ; this elevation is not so angulated or abrupt as in Loxoprosopus : between the an- tennae, at their base, a minute fovea extends upwards, and is con- tinued in an obsolete longitudinal ridge towards the base of the head ; on either side of this fovea are two depressions, nearer to the inner surface of the eyes : the surface is flavous and finely punctate. Thorax quadrate (slightly transverse), constricted towards the base ; the anterior angles are depressed ; the surface subequate, finely and thickly punctate, subpubescent, flavous. Scutellum small, triangular. 144 CCELOCEPHALCTS. fusco-flavoiis. Elytra broader than the thorax, subparallel, equate, punctate-striate (the punctures being broad, and the striae almost obsolete), finely pubescent ; dark fuscous, suffused with ferrugineous at the apex. Antennae tolerably long, robust ; the first joint broad and long (extending, when placed horizontally, beyond the outer margin of the eye) ; the second short, narrow ; from the third to the sixth the joints are gradually but strongly incrassated, so that the sixth joint is nearly three times the breadth of the second ; the rest of the joints are abruptly and finely filiform, the seventh being slightly larger, and the eighth to eleventh narrower and longer than the second ; in colour, the joints first to third are flavous, the fourth to eleventh rufous, the fifth, sixth, and apex of the eleventh being rufo- fuscous. Legs : the anterior flavous ; the postical flavo-ferrugineous. From the district of the River Amazon. Genus 23. C(ELOCEPHALUS * Palpi maxillares elongati, art. penultimo cylindrko, ad basin sub- constricto, art. ultimo brevi, hand attenuato. Palpi labiales cylindrici, minuti. Antenna filiformes, elongate, elytris diiplo longiores. Caput breve, antice productum, verticale. Thorax quadratus, rectilinear is, ad basin subconstrictus. Elytra subcylindrica, parallela, punctato-striata, subpubescentia. Pedes : tibiarum articulo secundo minuto; tarsis posticis hand dentatis, ad apicem dilatatis. Mandibles concealed. Maxillary palpi (Tab. V. fig. 8m) elongate; the second joint truncate at its apex ; the penultimate somewhat broader, cylindri- cal, its length being double its breadth ; the apical joint is broadly conical. Labial palpi elongate, minute. Antenna} approximate, situated at the anterior angle of the head, filiform, attenuate, elongated ; in form, length, and position closely corresponding to the antennas of Loxoprosopus ; the first joint is broad, dilated, and incurved outwards towards the apex ; the second short and ovate, the following elongate and attenuate, the whole being twice the length of the elytra. Eyes globose, situated at the base of the head, and extending late- rally as far as the anterior angles of the thorax. Head resembling that of Loxoprosopus, short, transverse, broadly * ko7Xo5, cavus ; icecpaXt), caput. CCELOCKPHALUS. 1 4-") produced in front, abruptly inflected (near the insertion of the an- tennae) at right angles to the hase and thorax. Thorax quadrate, rectilinear, broader than the head, constricted and transversely depressed at the base. Scutellum in the same plane as the elytra, indistinct, triangular. Elytra broader than the thorax, parallel, subcylindrical, deeply punctate-striate, and clothed sparingly with pubescence. Legs : the anterior femora (when viewed from the front) tolerably robust, and attenuated towards the apex. The tibiae abruptly inflected at the extreme base, straight, and gradually thickened to- wards the apex. The tarsus (Tab. V. fig. 8 h) is short and broad ; the two basal joints are triangular, the second being shorter and more minute than the first (in Loxoprosopus the basal joint is minute, and the second more elongated) ; the third broader, short, and almost bilobed ; the margins and under surface are clothed with a rigid thick pubescence ; the apical joint is elongated, subincurved, and terminates in a bifid claw. The posterior femora are incrassated, gradually tapering towards the apex. The tibial are short, distinctly incurved at the immediate base, subattcnuated medially, and broadly dilated towards the apex, which is obliquely truncate ; the socket which is thus formed, is, when viewed under a high magnifying power (1-inch Ross), fringed at its margination with minute comb- like teeth, and terminates ultimately in a strong (not incurved) pro- jecting spur. The tarsi are elongate and narrow; the first joint longer than the second (both being dilated at the apex) ; the third subrotundate ; the fourth elongated, and terminating in a large glo- bular inflation immediately above the apical claw. This genus is very closely allied to Loxoprosopus, and is, in fact, only to be separated from it by the form (distinctly cylindrical and elongate, not abruptly dilated) of the maxillary palpi, and by the relative lengths of the joints of the anterior tarsus. 1. Coelocephalus pulchellus. (Tab. VI. fig. 4.) B.M. C. oblongo-ovatus, parallelus, subtiliter pubescens, fusco-niger ; capite deprcsso, rufo-fiavo ; thorace subquadrato, ad basin tenue eonstricto, impunctato, rufo-flavo ; elytris parallelis, punctato- striatis ; pedibus jiavis, femoribus posticis fusco adumbratis. Long. corp. 2 lin., lat. |- lin. Oblong-ovate, parallel, depressed, subpubescent, punctate, of a greyish-black colour. Head depressed, vertical ; between the eyes is a longitudinal medial fovea (in different examples more or less obsolete) ; eyes large, globose, lateral, situated at the base of the head ; the surface is finely punctate, impubescent, rufo-flavous. Thorax L 14G CCGLOCEPHALTTS. transverse (almost quadrate) ; the anterior angles depressed ; the sides marginate ; the base constricted, but not so apparently as in C. amcenus, and transversely depressed ; the surface is impunctate, flavo-pubescent and rufo-flavous. Scutellum triangular, pubescent, fuscous. Elytra broader than the thorax, parallel, punctate-striate, the punctures being coarse and shallow; black, obsoletcly flavo- pubescent. Antennae approximate, filiform, fuseo-ferrugineous. Legs flavous,' the posterior femora being suffused with fuscous. Taken by Mr. Bates in the district of the River Amazon. In the collection of the British Museum, and also in that of Mr. Baly. 2. Ccelocephalns amcenus. C. oblongo-ovatus, parallelus, subtiliter pvhescens, nigro-fuscus : capite brevi, impunctato, JIavo ; thorace quadrato, ad basin con- stricto et transverse depresso, JIavo ; elytris parallelis, stria to- punctatis, subpubescentibus, nigro-fuscis, sutura et apice JIavo marginatis ; antennis filiformibus, ferrugineis, art. 9—11 Jlavis ; 'pedibus flavis. Long. corp. 2 fin., lat. | lin. Oblong-ovate, parallel, depressed, obsolctely pubescent, punctate, of a dark fuscous colour. Head short, not produced in front, vertical, or somewhat reflected backwards below the base of the antennae; above the labrum is a transverse triangular depression ; eyes small, globose, lateral, situated at the base of the head ; the surface is impunctate, of a pale flavous colour. Thorax quadrate, more elongate than in G. pulchellus, and the base more distinctly constricted ; the anterior angles are depressed ; the sides rectilinear ; the surface transversely depressed at the anterior and basal margins, subglobose, impunctate, flavous, obsoletcly flavo-pubescent. Scutellum triangular, flavo- pubescent, flavous. Elytra broader than the thorax, parallel, de- pressed, with rows of punctures arranged in the form of stria? ; these punctures are broad and shallow ; the surface is subpubescent, of a dull fuscous colour, — the line of the suture, and also the apex, being bordered with a narrow, well-defined suffused line of flavous. An- tennce approximate at their insertion,«filiform, ferrugineous, the three apical joints being flavous. Legs flavous throughout, the apical in- flation of the postical claw being rufo-flavous. Closely allied to C.puleliellus, from which species it may be readily separated by the absence of any marking between the eyes, by the quadrate and posteriorly constricted form of the thorax, and by the sutural flavous band on the elytra. Ega. district of the River Amazon. C(ELOCEriTAI,US. 147 3. Coelocephalus pygmseus. (Tab. V. fig. 8.) C. oblongo-ovalis, subparallelus, robust us, pa Hide testaceus ; capita brevi, reflexo, juxta antennarum insertionem bituberculato, punc- tato, pallide testaceo, ad basin nigro suffuso ; thoraee quadrato, ad basin constricto et transverse depresso, punctato ; elytris robust is, paraJlelis, pwnctato-striatis, leviter flavo-pubescentibus, ad basin macula nigra semicircidari notatis, etiamque post me- dium duabus maculis triangidaribus suffusis ; anfennis elongatis, filiformibus, testae eis ; pedibus pallide testaceis. Long. corp. If lin., lat. f lin. Oblong-oval, subparallel, robust, pale testaceous. Head snort, slightly produced, reflected backwards at an acute angle ; eyes large, very prominent, projecting laterally beyond the margin of the thorax ; the antennas are inserted in a slight projection from the surface (which extends a little in front of the margin of the eyes) ; behind the insertion of the antennas are two indistinct tubercles, which are formed by an obsolete Y-shaped fovea ; the surface is punctate, especially at the base, and in colour pale testaceous ; at the upper margin (between the eyes) suffused with black. Thorax quadrate, distinctly constricted at the base (more so than in C. fusco-costatus) ; the anterior angles are depressed; the sides submarginate ; at the base is a broad transverse depression, extending to the lateral sub- margination ; the surface is finely punctate. Scutellum triangular, impunctate, fuscous. Elytra broad, robust, parallel, punctate- striate, very finely flavo-pubescent ; at the base is a large black marking, common to both elytra, semicircular in form, of the breadth of the base of the thorax : two other markings, triangular, and more suffused, are situated postmedially ; these do not reach the margina- tion, or the suture, and are at some little distance from the extreme apex. Antenna} fine, filiform, more than twice the length of the elytra, pale fulvo-testaceous. Legs somewhat long and attenuated, pale testaceous throughout. This species differs from C. fusco-costatus in the form of its thorax, which is more constricted at the base, in its pale concolorous an- tennas, and in the absence of any suffused marking at the margina- tion of the elytra. Although in other respects these insects are almost identical, it is difficult to believe that these differences (dif- ferences both of form and colour) can be the result of variation, and equally difficult to believe that they are sexual, inasmuch as the length of the antennas, which would be the principal sexual charac- teristic, is the same in each. From the district of the River Amazon. l2 148 OCELOCEPHALUS. 4. Ccelocephalus fusco-costatus. C. oblongo-ovatus, robustus, pallide testaceus ; capite brevi, reflexo, inter oculos transverse dej>resso, punctata, inter oculos fusco suffluso ; thorace quadrato (subelongato), ad basin constricto et transverse depresso, punctidato ; elytris sat robustis, paraUtlis, punctato-striatis, ad basin medium circidariter rnaculatis, etiam- que transverse ad medium suturam ; lateribus fusco suffusis ; antennis hngis, Jiliformibus, art. 1-3 fuscis, 4 et 5 testaceis, (5 fusco, 7 et 8 nigro-fuscis, 9-11 testaceis ; pedibus pallide testaceis. Long. corp. 2 lin., lat. f lin. Oblong-ovate, rather more parallel than G.pygmceus, robust, pnnc- tate-striate, subpubescent, pale testaceous. Head short, depressed, reflected backwards at a sharp and acute angle ; eyes large, very pro- minent, projecting laterally beyond the margin of the thorax, situ- ated immediately at the back of the head ; the base of the antenna) is prominent, and situated directly on the angle of reflection ; im- mediately above it, and between the eyes, is an obsolete T-shaped depression ; the surface is finely punctate, more distinctly at the base, between the eyes suffused with dark fuscous. Thorax quadrate (slightly elongated), distinctly constricted at the base ; the anterior angles depressed ; the sides marginate ; at the base is a broad trans- verse depression, which extends as far as the margination ; the sur- face is finely punctate, subpubescent. Scutellum triangular, fuscous. Eh/tra broad, robust, parallel, broadly punctate-striate (the punctures being broad and shallow), subpubescent : at the base is a large semi- circular spot common to each elytron and surrounding the scutellum (this marking is equal in breadth to the base of the thorax) ; at the bine of margination is a longitudinal suffused fuscous marking, ex- tending from the shoulders nearly to the apex, while on the suture (between the middle and the base) is a small suffused fulvous marking, obliquely transverse. Antennae twice the length of the elytra, filiform ; the first and second joints dilated ; the first, second, and base of the third fuscous ; the fourth and fifth testaceous ; the sixth fuscous ; the seventh and base of the eighth dark fuscous, in- clined to black ; the rest pale testaceous. Legs pale testaceous throughout; the globular inflation over the posterior claw bright ferrugineous. This species may be distinguished from C. pygmmis (to which it is very closely allied) by the different form of the thorax, the co- louring of its antenna?, and the fuscous margination on its elytra. From the district of the River Amazon. loxoprosopus. 119 TRIBUS II. Palpi macdllares ad apieem incrassati (articulo ultimo interdum mi unto), articulo tertio subgloboso aut transverso, nunquam elougato, rarius quadrato. Genus 24. L0X0PR0S0PUS*. Gucrin-Men. (Icon. Rk/ne Anim. 1829-38, p. 806). Dohrn, Linn. Ent. 1855, p. 329. tab. 2. fig. 3, 4. Tliompson, Archives, vol. i. p. 289. Labrum subsinuatum, breve. Palpi maxillab.es validi, incrassati, art. '3''° globoso, ultimo brcvi. Palpi labiales elongati. A~?i labiales subcylindrici. Antenna ^rf 'formes, attenuate, in J corpore fere duplo longiores, art. 3, 4 et 5 subwqualibus. Caput breve, transversum, depressum, v< rtical . haud antice productum. * 7repi/3\e7rros-, omnibus admiratus, eximius : irepi, circum ; 0Ae7rw, video. 150 PERIBLEPXUS. Thorax transversus, ad basin leviter constrictus, lateribus marginatis, subsinuatis, sparsim punetatus. Elytra lata, robusta, parallela, ante medium transverse depressa, punctato-striata. Pedes robusti ; tibiis posticis brevibus, inarmatis, ungidis apicalibus dente robusto ab infra armatis. Labrum short, circular or subsinuate in outline. Maxillary palpi (Tab. VI. fig. 3 to) subelongatc, dilated at the apex ; the second joint is longer than the first, and gradually incras- sated ; the penultimate is considerably broader (as well as longer) than the second ; the last joint is short, narrower, and more or less flattened. Labial palpi attenuate, more or less cylindrical. Antennce situated between (and somewhat below) the eyes, filiform, attenuate, in the males at least twice the length of the body ; the first joint is elongate, slightly thickened towards the apex, and in- flected outwards; the second is shorter and more attenuate; the third distinctly longer than the first ; the fourth and fifth subequal ; in the males these three last-named joints are relatively as long as in the genus Loxoprosopus ; the remaining joints are filiform and sub- cylindrical. Eyes circular, globose, lateral, situate at (or close to) the base of the head. Head short, transverse, depressed, and at the insertion of the an- tennae (when viewed laterally) vertical or almost reflected backwards, not produced in front ; at the insertion of the antennae, the angle which is formed by the reflection of the head is sharp and well- defined, not rounded, thus closely resembling the preceding genus, Loxoprosopus ; the surface is more or less punctate. Thorax transverse, rectangular ; the anterior angles subacute and depressed ; the sides marginate and subsinuate, with a tendency to an angle near the middle ; at the base slightly constricted ; the sur- face, in the example before me, is coarsely and sparingly punctate and glabrous. Scutellum large, triangular, impunctate, situated in the plane of the elytra. Elytra broad, parallel, robust, broader and more robust than in Loxoprosopus, and distinguished moreover from that genus by a broad antemedial transverse depression, which extends obliquely upwards to the shoulders, and gives a prominence to the scutellary angles; the surface in the example before me is deeply punctate- striate, the stria? being obsolete near the suture and at the apex. Leys robust. The anterior femora cylindrical, and slightly dilated PERIBLEl'TUS. 157 medially. The tibia arc distinctly deflected at their immediate base, cylindrical, and hardly dilated at the apex. Of the tarsi the first joint is broad and elongate, triangular ; the second more minute ; the third broader than the first, bilobed ; the terminal joint is elongated, the claw being armed at its inner surface on either side near the base with a sharp tooth. The posterior femora are broadly incras- sated. The tibice are short, robust, not incurved medially, and atte- nuated ; the posterior surface is flattened, and hollowed out or mar- ginate : this marginatum at the apex forms a socket for the insertion of the tarsus ; the margins of the socket are simple ; the extreme apex is armed (behind the insertion of the tarsus) with a single robust spur. The tarsus is short and attenuated, the two basal joints being slightly dilated at their apex ; the third joint subcir- cular ; the fourth terminating in a globular inflation. This genus, though closely allied to Loxoprosopus, is certainly very distinct. The angulated or subsinuate lateral margin of the thorax, the broad and very apparent transverse depression on the elytra, and its generally robust form will at once characterize it. It is an in- teresting link between Loxoprosopus and the following genus, Octo- gonotes : to the former it is allied by its elongate antennae and its abruptly vertical head ; to the latter genus by the angular form of the lateral margins of the thorax. 1. Peribleptus laevigatas. (Tab. VI. fig. 3.) P. ovatus, robust us, paralMus ; capite brevi, reflexo, supra basin antennarum bituberculato, punetato, antea nigro, supeme flavo ; thorace transversa, ad basin subattenuato, transverse depresso, punetato, flavo, antice et ad medium longitudinaliter suffuso fuseo ; elytris punctato-striatis (adsuturam striis obsoleiis), trans- verse apud medium depressis, nigro-fuscis, ad humeros longitu- dinaliter flavo-notatis ; antennis longis, tenuibus, filiformibus, flavis, art. 7 et 8 fuscis, 9-11 pallide testaceis ; pedibus pallide testaceis. Long. corp. 2 lin., lat. 1 lin. Ovate, robust ; sides parallel. Head short, transverse, depressed, and (below the insertion of the antennae) reflected ; eyes tolerably large, distant, situated nearly at the base of the head, and extending laterally as far as the line of the margin of the thorax ; above the in- sertion of the antennas are two slightly transverse and approximate tubercles ; the surface is punctate ; the colour in front black, at the base flavous. Thorax transverse (almost quadrate), slightly narrowed towards the base ; the anterior angles are prominent ; the sides are 158 0CT0G0N0TES. marginate and, medially, slightly dilated; the posterior angles arc distinct and subacute ; at the base a broad shallow transverse de- pression extends obliquely towards the anterior angles, giving a prominence and a rotnndate appearance to the disc ; the surface is punctate, in colour flavous, with the anterior margins and two medial longitudinal indistinct markings rufo-fuscous. Scutellum triangular, distinct, flavous. Elytra punctate -striate (the striae being less distinct towards the suture) ; an antemedial depression extends upwards along the suture, and obliquely to the humeral angles, giving a rotundate and subglobose form to the base of either elytron ; the surface is laevigate, and of a dark-fuscous colour, gradually shading off towards the apex into testaceous ; at the humeral angles (and extending partially along the margination) is a light-flavous marking. Antenna', of the length of the body, filiform ; the first joint incrassated towards the apex and inflected outwards ; the second short, ovate ; the third longer than the first, fine, and slightly incrassated at the apex ; fourth and fifth nearly equal ; seventh to eleventh with a distinct tendency to dilatation ; in colour, first to sixth flavous, seventh and eighth dark fuscous, ninth to eleventh pale testaceous. Legs pale testaceous, infuscated at the base of the posterior femora (suggesting, from their general appear- ance, the immaturity of the example) ; the globular inflation of the posterior claw bright red. A single specimen was captured by Mr. Gray at Petropolis (Organ Mountains), February 1857. Genus 20. OCTOGONOTES*. Drop. Ann. des Sc. Phys. vol. iii. p. 181. Dej. Cat. ed. 3 (1837), p. 407. Laporte, Hist. Nat. des Anim. Artie. Coleopt. (1840) vol. ii. p. 519. Hope, Coleopt, Manual, vol. iii. (1840) p. 100. Orbiyny, Dictionnaire cFHistoire Naturelle (1841, &c). Labrum latum, ad latera rotundatum. Mandibul^e robustoe, ad apieem acuminata;, ad basin denticulatce. Palpi maxillares inJJati, art. 2ndo sensim incrassato, 3'"" abbreviate, valde dilatato, ultimo subidato, depresso. Palpi labiales elongati, subeylindrici, ad apieem attenuati. Antennae filiformes, robustce, in 3 subattenuake et productcf, Oculi distantes, in S globosi. Caput haud productum, breve, depressum. Thorax transversus, ad latera angulatus, plcrumque complanatus. * oktio, octo ; ytovia, angulus. OCT0G0NOTES. 1 T>9 Elytra sat robusta, parallela, ad apicem rotundata, punctato-striata. Pedes robusti, tibiis posticis simplicibus, Jiaud calcare armatis, mar- (/inatione retro subsinuata. Labrum broad, subcircular. Mandibles (Tab. VI. fig. 5 o) robust, subconvex, broad, at the apex attenuated and produced into a sharp tooth ; on the inner surface are two angulated depressions, which form a second, much smaller and more obtuse tooth. Maxillary palpi (Tab. VI. fig. 5 m) globose ; the basal joint minute, almost obsolete ; the second short, gradually thickened towards the apex, where it is broadly obliquely truncate ; the penultimate is in- flated, much thicker and shorter than the second, increasing in dia- meter towards the apex ; the apical joint is subulate, circular, and -flattened, not acute, or conical. Labial palpi (Tab. VI, fig. 5 n) minute, elongated ; the second joint subcylindrical, broader than the first ; the apical attenuate. Antenna? filiform, robust (in the males very much elongated) ; the basal joint produced, and dilated towards the apex ; the second short, ovate (these two joints in the $ less dilated and smaller than in the c? ) ; the third, fourth and fifth subequal (in the c? slightly atte- nuate). Eyes large, situated at the base of the head, not extending late- rally so far as the anterior angles of the thorax ; in the males glo- bose, in the females less prominent. Head short, hardly produced in front, almost vertical. Thorax broader than the head, transverse (in the males less trans- verse than in the females), constricted towards the apex ; the sides marginate, the margination being produced antemedially (more or less distinctly) into an obtuse angle. Scutellum large, triangular, rounded at the apex. Elytra broad, robust, in the males slightly more attenuate than in the females, rounded at the apex, punctate- striate or punctate, clothed more or less with fine pubescence. Legs : the anterior femora robust. The tibia incurved at its im- mediate base, gradually thickened towards the apex ; at the extreme apex (below the insertion of the tarsus), on the under side, it is armed with a series of closely arranged comb-hke teeth. The tarsus (Tab. VI. fig. 5 d) is broad and short ; the basal joint contracted at the base, and triangular ; the second is of the same form, but larger in dimensions ; the third is broadly transverse, depressed medially, not bilobed ; from its centre proceeds the terminal joint, which is elongate, gradually incurved and incrassated towards the apex : the 100 OCTOGOXOTES. claw is bifid, thickened at the base, not armed on the inner sur- face with an inferior tooth. Posterior femora inerassated, ovate, at the apex grooved for the reception of the tibia. The tibia (Tab. VI. fig. 6 g) short, straight : when seen from behind, the posterior sur- face is flattened, marginate, and near the apex depressed into a lon- gitudinal groove ; this margination is not produced (as in the genus Monoplatus) into a spur, but is in outline subsinuate ; at the apex the tibia is dilated, and margined near the insertion of the tarsus with a series of sharp and regularly disposed comb-like teeth ; the extreme apex is produced into two robust incurved claws. Tarsi attenuate ; the first joint elongate, dilated at the apex ; the second of the same form, but shorter ; the third minute, ovate ; the fourth produced into a globular inflation, which conceals from above the apical claw. The sexes of this genus may be separated at once by the relative lengths of the antennas : in the males the antenna? are longer and slightly more attenuated, the head also is narrower, the eyes are more globose, and the body somewhat less robust. There is a slight variation also in the form of the thorax : in some species the anterior angles are more or less (obsoletely) truncate, and it is the aspect of one of these examples which probably suggested the name of the genus, by giving to the thorax the semblance of being eight- sided. As a rule, and in the old typical species, 0. Banoni, Drap., the thorax is hardly more than six-sided. 1. Octogonotes brunneus. (Tab. VI. fig. 5.) 0. ovalis, depressus, latus, lanuginosus, brunneus; capite brevi, subdepresso, inter ociilos transverse foveolato, granidato ; ihorace transverso, quadrato, ad latera marginato 0 Oblong-oval, robust, subparallel, black, shining. Head short, not produced, with a T-like impression between the eyes ; glabrous, sparingly punctured. Thorax transverse, subdepressed ; the sides are marginate, produced laterally on either side (a little before the middle) into a very obtuse angle (apparently formed by the trunca- tion of the anterior angles) ; the surface smooth and sparingly punctate ; the colour is fulvous, clothed (especially at the base and sides) with a fine golden pubescence. Scutellum large, flavous. Elytra black, shining, with ten striae-like rows of almost obsolete punctures ; two fasciae (the one a little before the middle, and the other at an equal distance between this and the apex), both of which are interrupted by the suture, are formed by bright golden pubes- cence on a fulvous ground ; four spots likewise are similarly formed by this golden pubescence on the surface of the elytra : two, at (but not touching) the humeral angles ; a third, oblong in form, at the basal part of the suture ; and a fourth, as large as the other three united, subtriangular at the apex ; these two latter are common to both elytra. Antenna robust, filiform, fulvous. Legs fulvous ; the upper surface of the anterior tibiae and femora being obscurely clouded with black. Ega, in the district of the River Amazon. 6. Octogonotes bicinctus. 0. oblongo-ovatus, subcylindricus, niger, nitidus ; capite brevi, de- presso, supra antennarum basin oblique foveolato, impunctato ; thorace transverso, angulis anticis depressis, oblique truncatis, ad basin oblique depresso, impunctato, subpubescenti, fiavo ; elytris latis, striato-punctatis, vittis duabus (pilo albo formatis trans- versis), ad angulos humerales macula circidari, el jiuvta scutellum prope suturam linea brevi notatis ; antennis Jiliformibus, ferru- gineis, apice testaceis ; pedibus fulvis, superne fuscis. Long. corp. 3^ lin., lat. lg bin. Oblong-ovate, robust, subdepressed, black, shining. Head short, depressed, almost vertical ; maxillary palpi rufous ; eyes prominent, situated at the back of the head, extending laterally nearly as far as the anterior angles of the thorax ; below the base of the antennae is a transverse, triangular, black glabrous depression ; above the base of the antennae (and between the eyes) is a narrow, obliquely transverse fovea ; the surface is almost inipunctate, black. Thorax rather broader than the head, transverse ; the anterior angles depressed and subacute, broadly and obliquely truncate, forming medially in the margination a short angular projection ; at the base a broad 160 APALOTRItJS. transverse medial depression extends obliquely towards the anterior angles ; the surface is almost impunctate, subpubescent, flavous. Scutellum triangular, impunctate, black. Elytra slightly broader than the thorax, with rows of punctures arranged as striae ; black, shining ; two transverse bands (which are formed by dense white pubescence) extend from the first stria to the margination, one medially, the other nearer the apex ; at the humeral angles is a small circular spot, and along the suture for a short distance from the scutellum is a narrow linear marking of the same colour and forma- tion. Antennae tolerably long, filiform, ferrugineous ; the joints eight to eleven being testaceous. Legs fulvous, on the upper surface fus- cous ; the inflation of the posterior claw bright ferrugineous. This species differs from 0. sumptuosus (to which it is nearly allied) in the colouring as well as in the disposition and size of the markings on the elytra. From the district of the River Amazon. Genus 27. APALOTRITJS*. Palpi maxillares robusti, breves, plerumque geniculati, art. 3'10 dila- tato, globoso. Palpi labiales cylindrici, attenuati. Antennae Jili formes, robustce. Caput breve, depression, fere verticale. Thorax tains, transversus, rectilinearis, antice tenue constrictus. Elytra lata, robusta, suhcylindrica, pmnctato-striata. Pedes robusti ; tibiis posticis a retro super tarsi insertionem calcare armatis. Labrum subcb'cular, broad. Mandibles robust, at the inner margin armed with a single short but acute tooth. Maxillary palpi (Tab. VII. fig. lm) broad, robust, generally geni- culated ; the basal joint minute ; the second gradually broader to- wards the apex and obliquely truncate ; the third broader and not longer than the second, also obliquely truncate at the apex; the terminal joint much narrower than the third, and conical. Labial palpi (Tab. VII. fig. 1 n) minute, somewhat more elon- gate than in the genus Octogonotes ; the first and second joints at- tenuated at the base ; the ultimate joint attenuate. Antennae approximate, situate between and below the inner mar- * «7ra\6s\ gracilis ; Qp'tZ,. coma. APAL0TRITTS. 107 gin of the eyes, robust, filiform ; the first joint is elongate and broadly dilated ; the second ovate, short ; the third, fourth and fifth attenuated and subequal. Eyes globose, distant, situated almost immediately at the base of the head, extending laterally not so far as the anterior angles of the thorax. Head short, hardly produced in front, deflected at right angles to the plane of the elytra. Thorax broader than the head, transverse, very slightly con- stricted in front ; the anterior angles subacute and depressed ; the sides marginate; the surface equate, and in A. pubescens finely pubescent. Scutellum large, triangular, impunctate, situated on the plane of the elytra. Elytra broad, robust, subcylindrical, rounded at the apex ; in A. pubescens deeply punctate-striate and pubescent. Legs : the anterior femora sufficiently robust, attenuated at the base. The tibiae are straight, incurved at their immediate base, and cylindrical. The tarsi are short ; the basal joint triangular, of the breadth of the base of the tibia ; the second of the same form, but more minute ; the third transverse, subcircular at the apex, distinctly bilobed ; these three are clothed on their under side with thick rigid pubescence ; from the base of the third proceeds the last joint, which is elongated, and gradually dilated and incurved towards the apex ; the joint terminates in a bifid tooth, unarmed by any spur on its inner surface. The posterior femora are broadly inerassated, ovate, tapering gradually to the apex, which is obliquely truncate. The tibia (Tab. VII. fig. 1 g) is short, abruptly incurved at its immediate base ; the posterior surface is longitudinally grooved, and terminates in a hollowed socket for the insertion of the tarsus ; the margination of this socket is armed above the insertion of the tarsus, and also below, with an obtuse spur. The tarsus is abbreviated ; the first and second joints attenuated at the base, the second being more minute than the first ; the third minute and circular ; the fourth dilated into a globular inflation, which conceals from above the terminal claw. I am unable, from the examples before me, to trace with certainty any sexual distinctions in this genus. Apalotrius is in form closely related to Octogonotes, from which it may be separated by the quadrangular (not hexagonal) form of its thorax, by the manifestly different form of the maxillary palpi, and by the distinct spur on the margination of the postical tibia. 108 APALOTRIUS. 1. Apalotrius pubescens. (Tab. VII. fig. 1.) A. ovalis, latus, subdepressus, pubescens, luridus ; capite brevi, de- presso, parum producto, inter oculos transverse foveolato, sparsim punctato, nigro, ad frontem jlavo ; thorace transverso, angulis an- terioribus coarctatis, marginato, subcomplanato , pubescenti , jlavo ; elytris latis, punctato-striatis, nigro-fuscis vel nigris, nitidis, sed ad apicem et latera pube jlava {inter strias 4 et 5 prcesertim) vestitis ; antennis pedibusque flavis, femorum posticorum apici- bus exceptis nigris. Long. corp. 3 lin., lat. If lin. Oval, broad, robust, slightly depressed. Head and thorax much narrower than the elytra, pubescent. Head short, transverse, de- pressed in front ; eyes large, globose, distant, their exterior margin extending laterally as far as the line of the margin of the thorax ; between the eyes is a transverse fovea, extending in an oblique direction towards the upper margin of the eyes ; the surface of the head is sparingly but deeply punctured ; black, the anterior portion (in front of the insertion of the antennae) being flavous. Thorax transverse, slightly narrowed in front ; sides marginate, and (when viewed laterally) deflected from the humeral angle to the lower margin of the eyes ; the anterior and posterior angles are subacute and distinct ; the surface of the thorax is equate and very finely punc- tured throughout, pubescent, flavous. Scutellum triangular, slightly granulated, fuscous. Elytra broad, depressed, punctate- striate ; black, shining, clothed throughout irregidarly, but especially at the apex, the margins, and between the fifth and sixth strias, with a fine silky golden pubescence (this band of pubescence between the fifth and sixth striae is in perfect specimens very marked and distinct). Antenna} robust, filiform, with the first joint incrassated, and deflected outwards at the apex ; the second somewhat more attenuate, short and ovate ; of the rest, which are filiform, the third is longer than the fourth, and the fourth narrower than the fifth ; the two basal joints are ferrugineous, the rest flavous. Legs entirely flavous, with the ex- ception of the apex of the postical femora, which is black. Several examples of this fine species have been sent home by Mr. Bates from Ega (River Amazon). It is probable that in quite recent specimens the elytra will be found to be clothed throughout with a fine griseous pubescence, instead of being, as in the examples before me, black and shining ; and that this pubescence will obscure the longitudinal band, which in these examples is so conspicuous. EXARTEMATOPUS. 1 6i) Genus 28. EXARTEMATOPUS*. MS. Chew. Coll. Mandibtjl^; infra dente brevi basali armatce. Palpi maxillares robusti, incrassati, art. 3tw dilatato, ultimo brevi. Palpi labiales elongati, attenuati. Antenna robiistce, sat magna?, apicem versus dilatato?. Caput breve, verticale, thorace constrictius. Thorax transversus, latus, rectangidaris, angulis anticis exstantibus, depressw. Elytra lata, convexa, punctato-striata, cohrata, glabra. Pedes robusti ; tibiis posticis simplicibus. Labrum subcircular. Mandibles robust at tbe base, and armed on the inner margin with a short basal tooth, at the apex acuminated. Maxillary palpi (Tab. VII. fig. 2 m) robust, inerassated ; the basal joint minute; the second dilated towards the apex and obliquely truncate ; the third more robust and shorter, attenuated at the base ; the ultimate joint abbreviated, conical. Labial palpi (Tab. VII. fig. 2n) elongate, minute ; the basal joint quadrate ; the second somewhat thickened towards the apex, and constricted at the base ; the third narrower at the base than the apex of the second. Antenna approximate, situated between and below the inner mar- gin of the eyes, robust, long, dilated at the apex ; the basal joint elongate (extending, when placed laterally, beyond the sides of the head) and gradually dilated, and inflected towards the apex ; the second ovate, short ; the third to the sixth nearly as long as the first, more attenuate ; the seventh to the eleventh abbreviated, and more robust, gradually inerassated as they approach the apex. Eyes large, subglobose, situated at the base of the head. Head short, not produced, much narrower than the thorax ; when viewed laterally, depressed at right angles to the plane of the thorax. Thorax transverse, broad, rectangular ; the anterior angles de- pressed, but prominent ; the sides parallel and broadly marginate ; the surface is flat, inclined at an angle of 45 degrees from the plane of the elytra. ScuteUum large, triangular, situated in the same plane as the elytra. Elytra broad and convex, considerably broader than the thorax, rounded at the apex, punctate -striate, brightly coloured, glabrous. Legs: the anterior femora robust, and slightly incurved on their inner margin near the apex. The tibia; are short, robust, inflected * Derivatione ineerta. 170 EXARTEMATOrUS. at their immediate base, and gradually dilated ; when viewed from above, the anterior surface is longitudinally grooved, especially near the insertion of the tarsus, where it is obliquely truncate. The tarsus is short and robust ; the first joint transverse, triangular ; the second of the same form, but more minute ; the third subtrian- gular, hardly bilobed : in different examples the first and second joints are more or less subequal, but in all examples the terminal joint is distinctly broader than the others : the terminal claw is bifid, simple, robust, and slightly dentated at the inner margin near the base. The posterior femora are robust, incrassated, ovate. The tibia is short, inflected at the immediate base, gradually thickened towards the apex ; when seen from behind, the posterior surface is longitudinally grooved, forming at the apex a socket for the reception of the tarsus, and armed at its lower extremity, below the insertion of the tarsus, with two incurved spurs. The tarsus is attenuated ; the first joint dilated, and transversely truncate at the apex ; the second of the same breadth, but shorter and more triangular ; the third minute and subcircular ; these three joints are clothed on their under surface with thick pubescence ; from the base of the third proceeds the ultimate joint, which terminates in a broad globular in- flation completely concealing from above the apical claw. This genus has very distinct characters : the antennae are robust, not short, and incrassated at the apex ; the thorax is broad, the anterior angles are very prominent, and its surface is not rounded, but flat, in one plane, which is depressed at an angle of 45 degrees to the plane of the elytra : these, together with the robust form of the elytra (without reference to manifest peculiarities of structure in the palpi and tarsi), are amply sufficient to separate it generically from other forms. 1. Exartematopus nobilis. (Tab. VII. fig. 2.) E. oblongo-ovatus, latus, impubescens, punctato-striatus, castaneus ; capite brevi, inter oculos transverse foveolato, punctato, rufo- flavo ; ihorace transverso, angvMs subproductis, antice emarginato, lateribus marginatis, rufo-flavo, macidis quatuor cireidaribus, lateribusque, fusco-nigris : elytris latis, subdepressis, punctato- striatis, plagis sex jiavis ; i. e. duabus ad humeros (a sutura ad marginem, maculas nigras duas continent/bus), duabus ad mar- ginem (apud medium, parvis, immaeulatis), diudmsque apicem juxta, macidam unam nigrum continentibus ; antennis r*obiistis, artic. 1-5 ferrugineis, 6 nigro et subdilatato (reliqui mihi desunt); pedibus ferrugineis, femoribus poitf/r/s {antice et superne visis) castanets. Long. corp. 3 lin., lat. 2 lin. EXARTEMATOrUS. 171 Oblong-ovate, broad, subdepressed, punctate-strate, impubesccnt, of a brown -castaneous colour. Head very short and much depressed, almost vertical ; above the labium is a triangular transverse depres- sion ; immediately above the insertion of the antennas are two sub- circular depressions, and between them is a longitudinal medial fovea, which joins a distinct transverse depression above them ; eyes large and subprominent, situated at the base of the head ; the surface is finely and sparingly punctate and rufo-flavous, the medial depression being suffused with fuscous. Thorax transverse, considerably broader than the head (when viewed transversely, depressed at a considerable angle to the plane of the elytra) ; the anterior margin is emarginate, the anterior angles being depressed and prominent ; the sides are broadly marginate, and in outline subsinuate ; near the base are two obsolete depressions : the surface is distinctly and sparingly punctate, of a rufo-flavous colour ; at the anterior margin (immediately above and somewhat between the eyes) are two subcireular minute black spots ; behind them (at mid distance between them and the posterior margin) are two others, occupying the obsolete depressions ; the lateral margination also is broadly black. Scutellum triangular, impunctate, fuscous-black, glabrous. Elytra broader than the thorax, robust, subdepressed, punctate-striate (the punctures being deep and large, the stria? more obsolete, and both being almost obsolete near the apex) : at the humeral angles, and also at the apex, large irregularly denned patches of testaceous coloiu* extend transversely from the lateral margins to the suture ; the outline of that at the base is irre- gularly transverse, containing two insulated black maculoe (the one near the suture, the other at the extreme angle of the shoulder) ; the apical marking contains a single macula at its centre ; between these two (apical and humeral) patches is a third, at the mid-margin of the elytra, unconnected with, and much smaller than either, immaculate, and like them testaceous ; the castaneous coloration of the elytra between this and the other patches is darkly suffused with fuscous. Abdomen ferrugineous. Antennce robust, and apparently subincras- sated ; in the imperfect example before me, the five basal joints are fulvous and the sixth (which is slightly broader than the fifth) black. Leys rufo -ferrugineous ; the apex of the postical femora being at its outer side suffused with rufo-fuscous. Espirito Santo. In the collection of Mr. Fry. 2. Exartematopus scutellaris. (Tab. VII. fig. 3.) E. oblongo-ovatus, robustiis, impvhescens, pattide stramineus ; cap'ite depresso, transverso, ahbreviaio, supra basin antennarmnT foveo- lato, impunctato, glabro, nigro : ihorace transverso, antice ernar- 172 HYDMOSYNE. ginato, angiitis anterioribus rotundatis, punctatis, jiavo-stra- mineis ; elytris robustis, latis, tenue punctato-striatis, glabris ; antennis robustis, ad apicem dilatatis, fulvis ; pedibus robustis, jlavo-ferrugineis. Long. corp. 4i lin., lat. 2\ lin. Oblong-ovate, robust, impubescent, of a pale stramineous colour. Head depressed, not produced in front ; above the labrum is a trans- verse triangular plane depression ; immediately above the base of the antenna? is a short longitudinal fovea, which joins another (extending transversely and somewhat obliquely upwards towards the upper and inner margin of the eyes), these two canaliculations forming together the character of the letter T ; eyes tolerably large, situated at the base of the head ; the surface impunctate, glabrous, black, with a triangular suffused marking of fusco-rufous above the transverse fovea. Thorax transverse, much depressed, in front distinctly emar- ginate; the anterior angles are rounded; the sides broadly mar- ginate ; the surface is finely and sparingly punctate, glabrous, flavo- stramineous. Scutellum large, triangular, impunctate, glabrous, dark piceous. Elytra robust, much broader than the thorax, finely punctate- striate, glabrous, of a stramineous colour throughout. An- tennae robust, subdilated towards the apex ; the first joint long ; the second short, ovate ; the third to the sixth attenuate, of almost equal length, and shorter than the first ; the seventh to the eleventh short, dilated ; the colour fulvous, the extremity of the third and fourth joints being suffused with piceous, and the apex (from the seventh to the eleventh joints) slightly tinged with fuscous. Legs robust, flavo-ferrugineous throughout ; body beneath black, the under part of the thorax and the abdomen being flavous. Brazil. In the collection of M. Chevrolat. Genus 29. HYDMOSYNE*. Mandibux.e intra ad basin subtiliter dentatw. Palpi maxillab.es elongati, ad apicem dilatati, art. ultimo conico, brevi. Palpi labiales robusti, subcylindrici , minuti. Antenna filiformes, robustaz. Caput transversum, antice subproductum, subporrectum. Thobax capite latior, transversus, ad apicem constrictus. Elytra subparallela, tliorace leviter ampliora. Pedes : tibiis posticis a retro longitudinaliter excavatis, rectis, et ad ipsum apicem (pone tarsorum insertionem)ungulis duabus armatis. * ISuoavvt}, scientia, agilitas. HYDMOSYNE. 173 Labrum subcircular. Mandibles (Tab. VII. fig. 4o) robust, acuminated at the apex; the inner surface near the base is subsinuate, and forms two obsolete inner teeth. Maxillary palpi (Tab. VII. fig. 4 m) elongate, dilated at the apex ; the basal joint is minute ; the second attenuate, thickened towards the apex ; the third joint in breadth double that of the second, gradually inflated towards the apex ; the terminal joint is abbreviated and conical. Labial palpi (Tab. VII. fig. 4 I) minute, robust, subcylindrical ; the penultimate joint being slightly thickened at the apex, and the terminal joint more slender. Antenna; approximate, situated between and below the inner surface of the eyes, filiform, robust ; the basal joint elongate and broadly dilated (more broadly than in the preceding genus, Ex- artematopus) ; the second narrower, and minute ; the third joint longer than the first, and attenuate ; the fourth and fifth thicker and subequal. Eyes large and subglobose, situated at the base of the head, ex- tending laterally not so far as the anterior angles of the thorax. Head transverse (slightly produced in front), hardly more depressed in front than the thorax, porrect. Thorax broader than the head, transverse, obsoletely excavated in front ; the sides subconstricted towards the apex and marginate ; the surface generally finely punctate and glabrous or sparingly pu- bescent. Scutellum distinct, triangular. Elytra subparallel, slightly broader than the thorax, punctate or punctate-striate, subpubescent or glabrous. Legs: the anterior femora robust. The tibice incurved at their immediate base and gradually thickened towards the apex. The tarsi are elongated ; the basal joint is triangular, not quite so broad as the apex of the tibiae ; the second of the same form, but more minute ; the third broad, and almost bilobed ; the apical joint is elongate, inflected, and gradually thickened ; the terminal claw is bifid, and armed on its inner surface on either side with a second, more minute tooth. The posterior femora are broadly incrassated, gradually tapering towards the apex. The tibice are short, inflected at the immediate apex ; the posterior surface is longitudinally grooved, and terminates in a deeply marginate socket for the insertion of the an- tenna? ; this socket commences in an obtuse angle in the margination, is armed along its sides with a closely arranged series of comb-like teeth, and terminates ultimately in a double incurved claw (the outer 174 HYDMOSYNE. one being larger and more prominent than the inner) below the in- sertion of the tarsus. The tarsus is short and attenuate ; the two basal joints being triangular and subequal ; the penultimate rounded and minute ; the terminal joint dilated into a bladder-like inflation above the apical claw, which is bifid, and has each limb armed with an inner and smaller tooth. After much examination and comparison, I have felt that this form ought to be separated generically from that which follows, to which it has a manifest affinity. The head is distinctly porrect, not depressed at right angles ; the terminal joint of the posterior tarsus is not so broad, or so manifestly bilobed ; and the longitudinal margination of the postical tibia is unarmed (except immediately at the socket) by any distinct spur. The facies also of the whole insect is different : it is broader, flatter, not so cylindrical, and, instead of being pubescent, is brightly glabrous. 1. Hydmosyne inclyta. B.M. H. oblongo-ovata, subparallela, punctata, viricli-cenea ; capite brevi, ad basin antennarum bituberculato, granulato, rufo-flavo ; tJio- race transverse-, ad basin late depresso, punctato, rufo-flavo ; elytris sat robustis, subtiliter striato-punctatis ; antennis flli- formibus, fuscis ; pedibus flavo-ferrugineis, fasco suffiusis. Long. corp. 4^ lin., lat. 2 lin. Oblong-ovate, subparallel, punctate, impubescent, of a dark me- tallic-green colour. Head short, transverse, not produced in front ; above the labrum is a transverse triangular carination, and imme- diately above the base of the antennae are two tubercles, more pro- minently distinct by reason of a fovea which separates them : eyes tolerably globose, situate at the base of the head ; the surface be- tween the eyes is finely granulated; the colour rufous. Thorax somewhat broader than the head, transverse; the anterior angles subdepressed and distinct ; the sides marginate : at the base (when viewed obliquely) is a transverse broad depression ; the surface is finely punctate and glabrous; in colour rufo-flavous. Scutellum triangidar, impunctate, rufo-flavous. Elytra tolerably broad and robust, somewhat broader than the thorax, with punctures (minute and closely arranged) distributed in the form of striae ; these punc- tures are obsolete as they approach the apex ; near the shoulders (between the sixth and seventh striae) is a short but deep longi- tudinal depression. Antenna; filiform, fuscous. Legs flavo-ferrugi- neous, suffused with fuscous. South America. In the collection of the British Museum. atyphus. 175 Genus 30. ATYPHUS*. Palpi maxillares breves, dilatati, art. 3th subquadrato. Palpi labiales minuti, art. ultimo elongato. AsT^^yjE Jllifonnes, sat robuske (hand tarn ut in Hydmosyne). Caput transversum, latum, verticale. Thorax transversus, rectangular is. Elytra parallela, subcylindrica, ad apicem rotundata. Pedes: tibiis posticis calcaratis, tarsis breuibus. Labrum short, contracted, transverse. Maxillary palpi (Tab. VII. fig. 5 m) : the basal joint minute, rectangular, quadrate ; the second longer than the first, dilated and obliquely truncate at the apex ; the third much shorter and broader than the second, almost quadrate ; the terminal joint broadly conical. Labial palpi (Tab. VII. fig. 5«) minute; the second joint dilated and transversely truncate at the apex ; the terminal joint elongate, and of half the breadth of the apex of the second. Antenna approximate, situated between the inner margins of the eyes, filiform, tolerably robust (more slender, however, than in Hydmosyne) ; the basal joint dilated (not so distinctly as in the pre- ceding genus) ; the second short and ovate ; the third longer than the first, and attenuated ; the fourth and fifth subequal. Eyes large, subglobose, lateral, at the base of the head, extending laterally to nearly the anterior angles of the thorax. Read somewhat broad, transverse, and (when viewed laterally) deflected at right angles to the elytra (not porrect and narrowed, as in Hydmosyne). Thorax transverse, rectangidar, slightly broader than the head ; the sides marginate and obsoletely subsinuate. Scutellum smaller than in the preceding genus, triangular. Elytra parallel, subcylindrical, perceptibly broader than the head, rounded at the apex. Legs : the anterior femora and tibia; (when viewed from in front) robust. The tarsi are short ; the two basal joints triangular (the second being slightly shorter than the first) ; the penultimate joint more transverse and bilobed ; these three are clothed on their inner surface with a thick and short pubescence : the terminal claw is bifid and simple, robust at the base. The 'posterior femora incrassated, at the apex obliquely truncate. The tibia' (Tab. VII. fig. 5 g) are in- * d, non ; rv. Caput breve, depressum. Thorax capite latior, tramversus, lateribus subsinuatis. Elytra elongata, parallela, suibeylindrica, haud ante medium trans- verse depressa. Pedes robusti ; tibiis posticis super tarsorum insertionem obsolete cal- caratis. Labrum subcircular, contracted. Maxillary palpi (Tab. VII. fig. 6 m) dilated ; the basal joint small and quadrate ; the second longer, dilated at the apex ; the third, in length, not greater than, but, at the apex, double the breadth of, the second ; the terminal joint minute. Labial palpi (Tab. VII. fig. 6 n) attenuated, subcylindrical, the penultimate joint being slightly dilated near the apex. Antennae approximate, situated immediately below the inner mar- gin of the eyes, filiform, sufficiently robust ; the basal joint is con- siderably dilated, more so than in the adjoining genera (approaching in character the genus Physonychis) ; the third and fourth joints are subequal, the fourth joint being slightly longer as well as more attenuate than the third. Eyes globose, circular, lateral, situated near to the base of the head. Head short, depressed, but not produced in front. Thorax distinctly broader than the head, transverse ; the anterior * y»j0o']"js, lsetus ; a ytjQeu). N 2 180 GETHOSYNUS. angles are considerably depressed ; the sides marginate and subsinu- ate in outline. Scutellum triangular, situated somewhat below the plane of the elytra. Elytra broader than the thorax, elongate, parallel, not anteme- dially transversely depressed, punctate, glabrous. Legs robust. The anterior femora cylindrical. The tibia? are in- flected at the immediate base and gradually thickened towards the apex ; unarmed at the extreme apex by any terminal spur. The tarsi are short and robust; the first and second joints subequal and tri- angular ; the third joint broader and more circular, almost bilobed ; the terminal joint is subincrassated, and slightly inflected downwards towards the apex. The posterior femora are ovate and short. The tibice (Tab. VII. fig. 6g) are inflected at their immediate base; the posterior surface is longitudinally grooved ; this groove is more distinctly marginate as it approaches the apex ; the margination (immediately before the insertion of the tarsus) is distinctly sinuate, or produced into an obsolete tooth ; the socket which contains the insertion is unarmed at its lateral margins by any pectinations, but is terminated ultimately by a single robust spur. The tarsus is attenu- ate ; the basal joint minute, triangular ; the second joint is of the same form as, but narrower than, the first ; the third joint is shorter ; from its centre proceeds the apical joint, which is broadly inflated, and entirely conceals from above the terminal claw ; the claw appears to be simple, quite unarmed by any inner basal tooth. Although this genus is formed upon a single example, I have had no hesitation whatever in separating it from the rest of the group. It is more parallel and elongate than any of the adjoining forms, and may at once be separated from them by its general facies. 1. Gethosynus sanguinicollis. (Tab. VII. fig. 6.) B.M. G. oblongiis, nitidus ; capite brevi, haud producto, punctato, inter oculos biverrucato, rufo ; thorace transverso, ad latera submargi- nato, complanato,fortiter punctato, rufo ; elytris pctrallelis, elon- gatulis, punetato-striatis, nigro-viridescentibus, nitidis ; antennis filiformibus, nigro-fuscis, articulis ad basin rufo anmdatis ; pe- dibus rufis, tarsis tibiisque anterioribus fuscis. Long. corp. 3 lin., lat. lj lin. Oblong-ovate, narrow, slightly depressed ; head and thorax of a dark crimson-red colour, strongly and coarsely punctate. Head short, transverse, not produced ; between the eyes, and above the insertion of the antennae, are two small indistinct tubercles, which give an ALLOCHROMA. 181 appearance of a depression in the form of the letter T. Tlwrax transverse, rectangular ; sides marginate, and parallel to each other, or very slightly convergent towards the anterior angles ; surface slightly complanato, with an obscure postmedial longitudinal ridge. Scutellum triangular, fuscous. Elytra parallel, elongate, strongly punctate-striate, of a bright metallic dark-green colour, the extreme apex being somewhat tinged with fuscous, and sparingly clothed with thin pubescence. Antennae, filiform, robust, dark rufo-fuscous ; the basal joint black, broad, especially towards the apex, and de- flected outwards ; the second joint short, ovate ; the third longer than the fourth, and the fifth about the length of the first. Legs bright crimson-red, with the anterior tarsi, tibise, and upper part of the femora dark fuscous. Espiritu Santo, Brazil. A single specimen is in the collection of the British Museum. Genus 32. ALLOCHROMA*. Palpi maxillares elongati, apicem versus subdilatati. Palpi labiales attenuati. Antenna fill formes, plerumque subtiliter incrassatce. Caput breve, Jiaud antice productum, sapenumero pcene verticale. Thorax transversus. Elytra lata, robusta, abbreviata, aliquando ante medium transverse depressa, glabra, rarius pube vestita. Pedes : tibia? posticce a retro visa? longitudinaliter marginatce, siwuatce aut rectce, breves. Labrum transverse, short, subcircular ; mandibles concealed, armed more or less distinctly at their inner surface with a double depression forming together a short tooth. Maxillary palpi (Tab. YII. fig. 7 m) elongate, robust; the first joint short, quadrate, constricted at the base ; the second longer and broader, transversely truncate; the penultimate short, transverse, robust, the breadth being greater than (or at least equal to) the length, incrassated towards the apex ; the last joint conical and ab- breviated. ^ Labial palpi (Tab. VII. fig. 7 n) attenuate and more or less elon- gate ; the basal joint short ; the second and third of subequal length, almost cylindrical, and attenuated towards the apex. Antennaz situated below (or in a line with) the lower margin of the eyes, robust, filiform, with a distinct tendency in many species * aXXo?, clirersus ; xpCo^a, color. 182 ALLOCHBOMA. to dilatation ; the basal joint is long, and incrassated towards the apex ; the second short and ovate ; the third attenuate, and always longer than the first ; the fourth varies in length in different species, some- times it is shorter than (but more frequently equal in length to) the third and fifth ; the rest of the joints are robust and generally sub- incrassated. Eyes globose, lateral, situated at the base of the head. Head much narrower than the thorax, hardly produced in front, depressed, frequently at right angles to the plane of the thorax. Thorax transverse (very rarely if ever quadrate), broader than the head ; the anterior angles are depressed and distinct (not obsolete or rounded, as in the gemis Rhinotmetus) ; the sides are marginate and for the most part parallel ; the surface is generally broad and flat rather than subcylindrical, glabrous, or in some cases sparingly clothed with obsolete pubescence. Scutellum well- developed, triangular, situated in the same plane as that of the elytra. Elytra broad, cylindrical, and abbreviated; always broader and more robust than the thorax ; in some species antemedially trans- versely depressed ; the surface is punctate-striate, glabrous or finely pubescent, and generally brightly coloured. Legs robust and sufficiently elongate. The anterior femora sub- cylindrical. The tibiae are inflected at the immediate base, straight, unarmed, longitudinally grooved in front. The tarsi are broad and short ; the first and second joints are subequal, and in form trian- gular, in most species broader than the apex of the tibiae ; the third joint is of still greater breadth, and deeply bilobed ; the terminal joint is slightly incrassated towards the apex : the claw is armed at its inner surface with a very distinct tooth. The posterior femora are incrassated and ovate. The tibial are distinctly incurved at the base, straight, and longitudinally grooved along their posterior sur- face : the margins of this groove are in no instance serrated or armed with a tooth ; for the most part they are straight, rarely in outline even sinuate : the apex of the tibia is dilated and obliquely truncate : the socket for the insertion of the tarsus is unarmed laterally (as is the case in other genera) by comb-like teeth; it is terminated by two strong and very distinct spurs. The tarsus is short and attenu- ated ; the two basal joints are subdilated towards their apex; the third is circular and somewhat broader ; the fourth broadly inflated : the terminal claw, like the anterior, is armed at its inner surface with a basal spur. This genus may without difficulty be separated from those adjoining it. In general faciea the species composing it are shorter and more ALLOCHROMA. 1853 robust ; the elytra are distinctly broader than the thorax, and for the most part brightly coloured. Its transverse and rectilinear thorax, together with the unarmed posterior tibiae, will also separate it from those groups to which, from the form of the palpi, it is nearly allied. 1. Allochroma humerale. A. ovale, robustum, subdepression, nigrum; capite brevi, ad apicem elongatulo, longitudinaliter carinato, punctato, ad basin penitus granulato, rufo (inter oculos nigro maculato) ; thorace transversa, ad apicem leniter constricto, antice (ad latera) depresso, cequalo, punctato, rufo, macula longitudinali ad medium, alterisque apud angulos anticos, nigris ; elytris robustis, punctato-striatis, flavo- pubescentibus, fusco-nigris, ad humeros rufo notatis; autennis rufis, art. 5-8 nifo-fuscis ; pedibus rufis, tibii* anterioribus (tarsorumque a2^icibus) fuscis. Long. corp. 3^ lin., lat. 2 lin. Oblong, oval, slightly convex, robust, black. Head very short, depressed, almost vertical, slightly elongate ; eyes large, but not pro- minent, situated at the back of the head ; at the base of the antennas (immediately above their insertion) a short longitudinal fovea is apparent ; below the insertion of the antennas is a longitudinal ridge, extending nearly to the mouth ; the surface is punctate, especially at the base, where it is almost granulated ; the colour is rufous, with a dark fuscous suffused spot between the eyes and close to the base. Thorax transverse, slightly constricted towards the head ; the anterior angles considerably depressed ; the sides submarginate ; surface smooth and equate throughout, very thickly punctate, rufous, with a dark fuscous medial longitudinal line (which is broad, and widening towards the middle) extending from the head to the basal margin ; the depression also of the anterior angles is of a dark fuscous colour. Scutellum triangular, impunctate, rufo-fuscous. Elytra somewhat broader than the thorax, robust, short, punctate-striate, of a dark fuscous colour, clothed throughout with a short fiavous pubescence ; from the base of the elytra (between the scutellum and the humeral angle) is a broad longitudinal rufous band, diminishing gradually in breadth and terminating medially at the fifth stria. Antennce filiform, short, rufous, with the fifth to the eighth joints rufo-fuscous. Legs rufous, with the anterior tibiae (as well as the apex of the tarsi) fuscous. A. humerale may be distinguished from its congeners by its greater size, and more particularly by the short and thick fiavous pubescence on its elytra. From the district of the Eivcr Amazon. 181 ALLOCHEOHA. 2. Allochroma coccineum. A. oblongo-ovatum, latum, robustum,hnpubescens,punctato-striatum, pallide rufum, glahrum ; capite brevi, haud producto, inter oculos oblique foveolato, impunctato ; tJwrace transverso, ante submar- ginato, apud angulos posticos obsolete depresso ; elytris latis, striato-punctatis, ante medium transverse depressis ; antennis ro- bustis,Jiliformibus, ad apicem subtiliter incrassatis, rufo-fuscis, art, 6-11 fuscis ; pedibas anterioribus nigro-fuscis, post ids riifis. Long. corp. 2^ lin., lat. 1|- lin. Oblong-ovate, broad, robust, impubescent ; punctate-striate, of a pale rufous colour throughout, glabrous. Head short, transverse, not produced in front ; above the labrum is a transverse plane ; above the base of the antennae and between the eyes is a distinct and sub- circular groove, which extends obliquely upwards towards the upper margin of the eyes ; the surface impunctate : eyes large and prominent, situated at the base of the head, but not extending laterally as far as the anterior angles of the thorax. Tlioraoo transverse, broader than the head ; the anterior margin slightly emarginate ; the anterior angles depressed and subacute ; tbe sides marginate ; the posterior angles subacute ; the surface is equate, without any transverse basal depression ; two very obsolete impressions are situated submedially in the direction of the posterior angles. ScuteUum triangular, large, rounded at the apex, impunctate. Elytra broader than the thorax, robust, slightly attenuated towards the apex, with punctures arranged in the form of striae ; a broad and shallow depression extends trans- versely a little above the middle, which gives an appearance of pro- minence to the base ; at the sixth stria from the suture a short longitudinal depression (close to tbe shoulder) gives distinctness to the humeral angle. Antenna; robust, filiform, with a slight tendency to dilatation at the apex ; rufo-fuscous, the sixth to the tenth joints being fuscous. Legs : the anterior darkly fuscous ; the posterior rufous throughout. Brazil. Taken by Mr. Fry, and also by my friend Mr. Gray and myself, in the neighbourhood of Rio Janeiro. This species is subject to sbght variation in colour, some examples being of a brighter crimson hue than others : in one example in Mr. Fry's collection the posterior legs are black, and the antennae more distinctly incrassated and of a deep black colour throughout. In figure and general appearance, as well as in size, this species approaches closely to Altica chlorotica, Oliv. (vol. vi. p. 690, spe- cies 57, plate 2. fig. 37) ; it wants, however, the transverse postical line on the thorax, and appears to be deeper in colour than Olivier's species. ALLOCIIROMA. 185 3. Allochroina sexmaculatum. (Tab. VII. fig. 7.) B.M. A. oblongo-ovatum, sat robustum ; capite foveolato ; ihorace trans- verso, ad latera marginato, ad basin depresso, punctato, fusco- rufo ; elytris lath, punctato-striatis, apicem versus obsoletis, tes- taceis, nigro sex-maculatis ; maculis duabus ante medium obliquis, alteris duabus post medium subcircidaribus, et juxta liumeros duabus minutis, fusco suffusis ; antennis robustis, jiliformibus, rufo-fuscis ; pedibus robustis, rufis, fusco suffusis. Long. corp. 3 lin., lat. 1^ lin. Oblong-ovate, tolerably robust, impubescent, punctate-striate, shining, testaceous. Head short, very slightly produced in front ; above the labrum is a distinctly transverse plane depression ; imme- diately above the antennae is a longitudinal fovea (extending nearly to the basal line) which is bisected at right angles by a short trans- verse carination, these two together forming, medially, between the eyes the character of a cross ; on either side of these is a lateral angulated depression almost parallel to, but not approaching, the margins of the eyes ; closely adjoining the base of the antennas is another small but deep depression ; the surface is impunctate and rufous. Thorax somewhat broader than the head, transverse, rect- angular ; the anterior angles acute and depressed ; the sides broadly marginate ; near the basal angles is an indistinct depression, more apparent when viewed transversely ; the surface is deeply punctate throughout, of a dark rufous colour suffused with fuscous. Scutelh/m triangular; the apex being somewhat rounded, impunctate, black. Elytra broader than the thorax, robust, punctate-striate, the punc- tures being large and deep, and the striae very apparent at the humeral angles ; the stria) near the middle are no longer discernible, while at the apex the punctures are almost entirely obsolete ; the colour is testaceous : on either side of the suture are two irregu- larly formed black markings ; the one, antemedial, extends obliquely from the second to the fifth stria, in form obliquely and irregularly lozenge- shaped (on either side of this, between the seventh and eighth striae, is a minute subcircular spot of suffused black) ; the other, postmedial, immediately adjoining the suture, is subcircular, between the second and the seventh rows of punctures. Antennce robust, filiform, rufous ; the fifth and sixth joints being longer than the third. Legs rufous, suffused with piceous. A. sexmaculatum has evidently a very extended range. I have before me examples from Guatemala (from the British Museum col- lection), St. Catharine, and other districts of Brazil. In the collection of the British Museum, ond in most private cabinets. 18G ALLOCHEOMA. 4. Allochroma fasciatum. (Tab. VII. fig. 8.) B.M. A. oblongo-ovatum, robustum, depressum, punctatum, rufum ; capite ad basin T foveolato ; thorace transverso, ad latera marginato ; elytris sat latis, punctatis, rufis, ad humeros et pone medium nigris (i. e. fascia transversa tenui ad medium, sutura, basique rufis) ; antennis robustis,fil iformibus, fuscis ; pedibus rufis, fusco suffusis. Long. corp. 2-| lin., lat. 1-^ lin. Oblong- ovate, robust, depressed, punctate, impubescent, of a dark rufous colour. Head short, hardly produced ; above the labrum is a transverse triangular depression ; above the base of the antenna? and between the eyes is a longitudinal fovea, which is terminated at its upper extremity by another, transverse (extending between the inner margins of the eyes), these two together forming the character of the letter T ; eyes tolerably prominent, situated near the base of the head ; the surface (when viewed under a high power) darkly rufous. Thorax considerably broader than the head, transverse ; the anterior angles depressed and prominent; the sides broadly marginate; at the base (when viewed laterally) is an obsolete transverse depres- sion ; the surface, under a high power, is minutely punctured, of a dark rufous colour, suffused with fuscous. Scutellum triangular, ru- fous. Elytra broader than the thorax, subdepressed, with punctures arranged in the form of striae ; these punctures become obsolete as they approach the apex : black ; a transverse medial band, and also the apex being rufous ; the suture also is narrowly rufous. Antenna; robust, filiform, rufo-fuscous. Legs rufous ; the anterior tibiae and femora being suffused on their upper surface with fuscous. This species is subject to slight variation as to colour, and also the breadth of the transverse marking on the elytra. Mexico, and the northern portion of the continent of South America. In the cabinet of the British Museum, and in most collections. 5. Allochroma piceum. A. ovale, sat robustum, subdepression, nigro-piceum, nitidum ; capite brevi, hand antice elongato, inter oculos foveolato, punctulato, fusco-castaneo ; thorace transverso, rectangulari, angulis stibacutis, post medium transverse depresso, punctato ; elytris punctis magnis velut in striis coordinatis (ad marginem striatis), ante medium transverse et oblique depressis, apud humeros, marginem, et apicern parum castanets; antennis robustis, piceis, art. 10'"" et 11'"° fuscis ; pedibus piceis. Long. corp. 2| lin., lat. 1^ lin. ALLOCHROMA. 187 Oval, black, shining. Head short, depressed, scarcely elongated in front, dark rufous ; labrum fulvous ; eyes distant and slightly prominent : between the eyes, and above the insertion of the antenna?, is a longitudinal fovea which extends nearly to the base of the head (narrowed between the eyes, but broader as it approaches the basal margin) ; a transverse and less distinctly defined fovea (increasing in breadth near the eyes) crosses this at right angles : the surface of the head is spai*ingly punctate, and of a rich castaneous colour. Thorax transverse, with the anterior and posterior angles acute ; sides marginate, subsinuate ; near the base is a broad and shallow transverse depression; the surface is distinctly but sparingly punctate, piceous, shining. Elytra with deep and distinct punctures arranged in the form of striae ; a broad and indistinct antemedial depression (which is inflected upwards on either side towards the shoulders) gives an appearance of fullness or prominence to the anterior angles ; the colour is dark piceous, fading away at the shoulders, along the margins, and especially towards the apex, into a castaneous brown. Antennce filiform, robust, piceous ; the apex of the first and second joints, and the tenth and eleventh fuscous. Legs robust, piceous throughout. Brazil. 6. Allochroma Balii. A. ovale, subdepression, nigrum, nitidum ; capite et ihorace rufis ; cajpite brevi, transverso, antice elongatulo, inter ocidos transverse foveolato ; ihorace transverso, ad latera marginato ; scutello rufo; elytris latis, fascia albo-jlava antemedia, ad suturam bipartita, maculisque duabus ad apicem, circidaribus, marginem (Jiaud suturam) attingentibus, punctis obsoletis veluti in striis ordinatis ; antennis fuscis ; pedibus fuscis, femoribus posticis Jlavis. Long. corp. 2-| lin., lat. 1^ lin. Oval, broad, subdepressed, black, glabrous. Head slightly de- pressed, produced somewhat in front ; eyes prominent, lateral; between the eyes is a transverse and also a longitudinal fovea, forming together the character of the letter T ; the surface is impunctate, except near the basal line, where scattered punctures are apparent ; the colour is rufo-castaneous. Thorax transverse ; the anterior margin slightly emarginate ; the sides broadly marginate, and (when viewed laterally) depressed ; the surface is impunctate and rufo-castaneous. Scutellum triangular, rufous. Elytra broad, black, shining, with faint and sparingly distributed punctures arranged as stria? ; a broad antemedial transverse fascia, of a straw colour, is interrupted at the suture ; near the apex are two large circular spots of the same colour. Ante nun short, robust, slightly incrassatcd towards the apex, fuscous. Legs 188 ALLOCHEOMA. black ; the posterior femora being black, and the tibiae and tarsi fuscous. South America. A single example in the collection of Mr. Baly. 7. Allochroma lunatum. (Tab. VIII. fig. 1.) A. oblongo-ovatum, latum, robustum, impubescens, pwnctato-striatwm, jiavum ; capite brevi, inter oculos foveolato, punctata ; ihorace transverso, rectangulari ; elytris robustis, punctato-striatis, macula subcirctdari ad scutellum, alteraque obliqua ad apicem, nigris ; antennis filiformibus, flavis, art. 5 et 6 fusco suffusis ; pedibus jlavis, femoribus posticis fuscis. Long. corp. 2| lin., lat. 1| lin. Oblong-ovate, broad, robust, impubescent, punctate-striate, of a flavous colour. Head transverse, abbreviated, not produced in front ; below the base of the antennas is a transverse triangular depression (impunctate and glabrous) ; between the eyes is a short longitudinal fovea, bisecting at its upper extremity another transverse depression, thus forming together the character of the letter T ; eyes globose, extending laterally not quite so far as the base of the head ; the sur- face is very finely punctate. Thorax transverse, rectangular ; the anterior angles depressed and well-defined; the sides finely niargi- nate and rectilinear ; the surface is equate, clothed sparingly with a very fine pubescence. Scutellum triangular, impunctate, and black. Elytra broader than the thorax, robust, distinctly punctate-striate ; flavous, with an almost circular black marking near the scutellum, extending laterally on either side to the seventh stria, and (in the direction of the apex) the distance of one-third of the whole length of the elytra : another marking at the apex is also common to both elytra ; its upper margin commencing medially, at the sides, extends obliquely towards the suture ; this apical marking is interrupted at the suture by the distance on either side of one stria. Antenna filiform, robust (subincrassated), flavous, the fifth and sixth joints being suffused with fuscous. Legs flavous; the posterior femora being fuscous (suffused at the base with rufo-flavous), and the glo- bular inflation on the posterior claw brightly rufo-fuscous. This beautiful species is from the district of the River Amazon. In the collections of Messrs. Baly, Bates, Herr Dohrn, M. Chevrolat, and the Rev. H. Clark. 8. Allochroma flavovittatum. A. ovale, latum, subdepression, obsolete pubescens, rufum ; capite brevi, inter oculos transverse foveolatum : Ihorace transverso. ALLOCHKOMA. ISO punctato, rufo ; elytris latis, punctato-stnatis, nigris, fascia transversa media jiava, sutura quoque a fascia ad scutellum lateflava ; antennis jiliformibus, fuscis ; pedibus fiavis. Long. corp. 2\ lin., lat. 1-1-j lin. Oval, broad, depressed, obsoletely pubescent, rufous. Head very short, vertical, slightly produced ; eyes large, prominent, extending laterally as far as the line of the margin of the thorax : from the labrum a longitudinal carination extends upwards to the insertion of the antennas ; on either side of this are two other obliquely transverse carinations extending to the sides of the mouth ; above the insertion of the antennas, and between the eyes, is a transverse fovea : the sur- face in front is glabrous, near the basal margin punctate, rufous. Thorax transverse, rectangular, slightly constricted towards the base ; the anterior angles are depressed ; the surface is thickly punc- tate, rufous. Scutellum triangular, flavo-rufous. Elytra much broader than the thorax, depressed, coarsely punctate-striate, dark cinereous black : a broad postmedial flavous fascia extends from the margination to the suture ; its lower boundary (as it approaches the suture) inclines slightly towards the apex ; upon its anterior margin it is rounded oif from the margination upwards, extending obliquely towards the scutellum, and bounded at the scutellary angles by the second stria ; this flavous fascia is clothed throughout with yellow pubescence, the extreme apex of the elytra being clothed with white pubescence. Antenna; filiform, attenuate, fuscous, the basal joint being flavous. Legs entirely flavous. From the district of the Eiver Amazon. 9. Allochroma venustiun. A. ovatum, rohustum, impubescens, punctato-striatum, flavo-ferru- gineum ; capite brevi, inter ocidos foveolato, granulato ; thorace transverso, ad basin depresso, punctato ; elytris robustis, punctato- striatis (ad apicem obsolete), ante medium transverse subdepressis, subtiliter pmbescentibus ; antennis Jiliformibus, robustis, sidtin- crassatis,Jlavis, art. 7-10 fuscis ; pedibus flavis. Long. corp. 2 lin., lat. 11 lin. Ovate, robust, impubescent, punctate-striate, flavo-ferrugineous. Head short, slightly produced in front ; above the labrum is a trans- verse triangular depression ; eyes tolerably globose, black, situated nearly at the base of the head, extending laterally nearly as far as the anterior angles of the thorax ; between the eyes is a medial longitudinal fovea ; the surface is finely granulated. Thorax trans- verse (almost quadrate), slightly constricted towards the apex ; the 190 ALLOCHROMA. anterior angles are much depressed ; the sides marginate ; at the base (when viewed obliquely) is a broad transverse depression ; the surface is finely and thickly punctate throughout. Scutellum tri- angular, impunctate. Elytra considerably broader than the thorax, robust, punctate-striate (the striae becoming almost obsolete as they approach the apex) ; an antemedial transverse depression gives a prominence to the surface near the scutellum, extending obliquely upwards, and terminating in a short and deep longitudinal fovea at the apex of the shoulders, between the eighth and ninth stria? : the surface (when viewed under a high power) is clothed throughout sparingly with an obsolete flavous pubescence ; this pubescence is more apparent near the apex. Antennae filiform, robust, tolerably short, subincrassated, flavous, the joints seven to ten being fuscous. Legs flavous throughout. Brazil. A. venustum may be recognized from most of its congeners by its concolorous elytra ; it is distinctly broader than the two following species, which also are concolorous. 10. Allochroma nigro-marginatum. A. oblongo-ovale, robtistum, subpubeseens, Jlavo-ferrugineum ; ca- pite brevi, ad basin carinato ; thorace transverso, angiitis anticis subtruncatis, punctulato, ad basin pubescenti, ad marginationem piceo ; elytris latis, punctato-striatis ; antennis dilatatis, art. 1-5 flavis, 6-9 rufo-piceis, 10 et 11 rufo-ferrugineis ; pedibus Jlavo- ferrugineis. Long. corp. 1 lin., lat. | lin. Oblong-oval, broad, robust, very finely pubescent, of a flavo- ferrugineous colour throughout. Head short, depressed, slightly elongated ; in front of the head is an obsolete transverse triangular depression; above the insertion of the antenna? are two oblique carinations extending transversely to the base of the head ; eyes situated at the base of the head ; the surface is finely punctate. Tlwrax transverse ; the anterior angles depressed and truncate ; the sides marginate and rectilinear (very slightly subsinuate towards the base) ; the surface is very finely punctate, clothed with pubes- cence towards the sides and apex ; at the margination piceous. Scutellum small, triangular, pubescent. Elytra broad, robust, finely punctate-striate, transversely and antemedially subdepressed ; finely flavo-pubescent. Antennae robust, slightly dilated towards the middle; the joints one to five are flavous, six to nine rufo-piceous, ten and eleven rufo-ferrugineous. Legs flavo-ferruginoous throughout. Rio Janeiro. In the collection of the Rev. H. Clark. ALLOCHROMA. 191 11. Allochroma assimile. A. oblongo-ovatum, latum, robust inn, tenuiter subpubescens, jlavo- fi rrui/i neum ; thorace quadrato, ad basin transverse depresso ; ( 1 i/tris pvnctato-striatis, ante medium subdepressis, ad latera et ad basin siibjmbescentibus ; antennis ad apicem dilatatis, art. 1-5 Jlavo-rujzs, 6-8 rufo-piceis (cceteri desunt) ; pedibus anterioribus flavis, posticis rufo-flavis. Long. corp. 1 lin., lat. ± lin. Oblong-ovate, broad, robust, finely subpubescent (not so distinctly and generally as in A. nigro-marginatum) ; the colour is flavo- ferrugineous throughout. Head short, transverse, slightly produced ; above the base of the antennae, and between the eyes, are two obso- lete obliquely-transverse carinations, while between them is a third, medial, reaching to the base of the head ; the surface is finely punc- tate. Thorax quadrate ; the anterior angles subacute and much depressed ; the sides marginate ; the surface more distinctly pubes- cent than in A. nigro-marginatum ; the base is broadly and trans- versely subdepressed. Scutellum small, triangular, flavous. Elytra broad, robust, subparallel, finely punctate-striate, the striae being almost obsolete; finely pubescent at the sides and apex, and very sparingly throughout the whole surface (more sparingly than in the former species) ; a broad and faint transversely oblique depression extends antemedially in the direction of the shoulders. Antennae tolerably robust, slightly dilated towards the middle and apex; joints one to five flavo-rufous, six to eight rufo-piceous (the rest are wanting in the example before me). Legs : the anterior flavous ; the postical rufo-flavous. This species is at first sight closely allied to A. nigro-marginatum ; it may without difficulty be separated by the quadrate form of its thorax, and also by its somewhat less distinct pubescence. Rio Janeiro. In the collection of Mr. Baly. 12. Allochroma quatuor-pustulatum. B.M. A. ovale, subparallelum, rufo-jlavum, nitidum ; capite brevi, de- presso, hand producto, inter ocidos in forma literce T foveolato ; thorace transverso, angulis subacutis, ad latera marginato, spar- sim punctulato crebrius ad basin ; macidce duos circidares nigra; ad basin appropinquant ; ehjtris punctato-striatis, maculis qua- tuor nigris circidaribus ornatis, ad marginem rufo-ferrugineis ; antennis brevibus, robustis, incrassatis, art. 1-5 rufo-Jlavis, 6-9 nigris, 10 et 11 testaceis ; pedibus flavis. Long. corp.. 2^ lin., lat. 1-1 ■} lin. 192 ALL0CHR0MA. Oval, rufo-flavous. Head short, depressed, not anteriorly produced : eyes tolerably large, distant, not extending laterally as far as the posterior angles of the thorax ; parallel to the inner margin of each is a semicircular depression, while between these depressions a T-shaped fovea is apparent : the surface is impunctate. Thorax transverse, rectangular ; the anterior angles are prominent and siibacute ; the sides marginate and depressed ; the basal angles also subacute ; the surface is equate, finely punctured, glabrous ; at the base are two circidar black spots ; the margination is rufo -fuscous, and the sides suffused with rufous. Scutellum triangular. Elytra broad, deeply punctate-striate ; on either side of the suture (occupying the space between the second and the sixth striae) are two large circidar spots of a dark fuscous or black colour ; the margination of the elytra is rufo-fuscous. Antennce short, robust, subincrassated ; the first joint being long, and dilated at the apex ; the second short, ovate ; the third shorter than the first, and contracted ; the fourth and fifth shorter than the third ; the remaining joints gradually but slightly incrassated ; the first to the fifth flavous, the sixth to the ninth dark fuscous, the tenth and the eleventh testaceous. Legs flavous throughout. Guatemala. A single specimen, in the cabinet of the British Museum. This species, closely resembling A. festivum, is separated from it not only by its larger size and the different ai'rangement of its maculations, but in the character of the surface of its thorax, which is much more finely and less closely punctured. 13. Allochroma festivum. A. ovale, sat robustum, ferrugineum, nitidum ; capite brevi, haud prodiicto, inter ocxdos transverse foveolato ; thorace transverso, angulis anterioribus depressis, marginato, punctato, maculis dim- bus postmediis nigms ornato ; elytris fortlter pimciato-striatis, maculis quatuor nigris inter strias 2am et 6'am; antennis robustis, ad apicem subincrassatis, fuscis, art. &°-9n° nigris ; pedibus fuscis. Long. corp. 2± bin., lat. 1^ lin. Oval, ferrugineous, shining ; of the form of the preceding species. Head very short and depressed : from the base of the antennae a short longitudinal furrow extends medially upwards, and meets a transverse fovea between and somewhat above the eyes, the two together forming the letter T ; this T-shaped canaliculation is bounded on either side by a depression, which is close to, and follows the course of, the inner margin of the eyes : the surface is finely ALLOCITROMA. 193 punctate. Thorax transverse ; the anterior angles depressed ; the sides marginate ; the surface is punctate, more distinctly at the base : a postmedial transverse depression (which does not reach the basal line) extends to the margination ; in this depression are two con- tiguous circular spots. Scutellum sufficiently large, triangular, fus- cous. Elytra tolerably robust, coarsely punctate-striate ; in the centre of the antemedial, and also of the postmedial part of the elytra (between the second and the sixth stria?) is a large insulated black macula (that nearer to the shoulders subcircular, that at the apex oval or elongate). Antenna? robust, short, incrassated towards the base, fuscous, with the sixth to the ninth joints back. Legs ro- bust, ferrugineous. Brazil. A.festivum differs from all other species, except the preceding, in its four distinct markings on the elytra. 14. Allochroma sex-signatum. (Tab. VIII. fig. 2.) A. ovation, robustwn, Jiavum ; capite depresso, antice hand attenu- ato, inter oeidos in forma literce T foveolato, impunctato (ad ba- sin punetis minutis notato), rufo ; thorace transverso, rectangu- lar!, angulis distinctis marginatis, flavis ; elytris punetis veluti in striis dispositis, flavis, ad basin rufo suffusis ; maculis sex nigris, ad humeros duo?, ad scutellum duce circulares, duasque p>ost medium transversa ; antennis robustis, subincrassatis ; pe- dibus flavis, tarsis anterioribus (tibiisque supeme visis) fuscis. Long. corp. 2-| lin., lat. 1^ lin. Ovate, robust, flavous. Head large, very slightly produced, de- pressed ; eyes tolerably large, but not extending laterally to the line of the anterior angles of the thorax ; between the eyes is a very distinct T-shaped fovea, the longitudinal line of which is extended obsoletely upwards towards the base ; the surface of the head is im- punctate (with a few scattered minute punctures at the base) and rufous. Thorax transverse, rectangular, slightly compressed towards the base ; the anterior angles are prominent and subacute ; the sides distinctly marginate ; the posterior angles distinct ; the surface is equate ('without any depressions), impunctate, and in colour flavous. Scutellum distinct, triangular, large, impunctate, flavous. Elytra broad, robust, with rows of large and shallow strioe-like punctures ; a slight and broad depression extends transversely, a little in front of the middle ; the surface is flavous ; the apex is broadly suffused with rufous ; six large black spots are distributed on the surface : one, on either side, at the humeral angle, a second (larger and circular) near the scutellum, and the third (larger still and transverse) post- o 194 CERICHRESTUS. medially. Antenncc robust, filiform, with a tendency to inerassation towards the apex, fuscous. Legs flavous, with the anterior tarsi and upper part of the anterior tibiae fuscous. Brazil. 15. Allochroma generosum. (Tab. VIII. fig. 3.) B.M. A. oblongo-ovale, subcylindricum, cyanevm, nitidum ; capite et thorace rufis, valde punctatis ; capite brevi, subdepresso, antics paulum producto ; thorace transverso, angulis prominulis, lateri- fais marginatis, ad medium sensim anguloso-undidatis, bituber- culato ; eh/tris parallelis, punctis velut in striis ordinatis ; an- tennis brevibus, fuscis ; pedibus nigris. Long. corp. 3 lin., lat. If lin. Oblong-ovato, somewhat cylindrical, of a dark blue colour, shining ; head and thorax strongly punctate, fulvo-rufous. Head short, trans- verse, depressed, hardly elongated in front ; eyes distant, slightly pro- minent, extending laterally as far as the line of the thorax at the an- terior angles ; between the eyes (most apparent when viewed in front) is a transverse depression, which is connected with the insertion of the antennas by a short medial horizontal fovea. Thorax slightly transverse (almost quadrate); the sides marginate, slightly dilated at the middle ; the anterior angles distinct and subacute. Scutellum triangular, impunctate, fulvous. Elytra somewhat robust ; the sides are parallel, with broad and shallow punctures arranged as striae ; an appearance of prominence is given to the anterior angles by a shallow transverse depression which extends obliquely in the direc- tion of the shoulders ; the colour is cyaneous, shining. Antennas short, filiform, with a slight tendency to dilatation in the fifth to the eleventh joints, all of which are short, and of similar form and equal size ; the first joint is narrow at the base, but dilated at the apex, of the length of the fourth ; the second short, ovate ; the third attenuated, longer than the first or the fourth ; black. Legs rufo- fuscous. Columbia. A single example is in the collection of the British Museum. Genus 33. CERICHRESTUS*. Palpi maxillares globosi, art. 3"° plus duplo 2ml° latiori, quadrato. Palpi labiales elongati. Antenx^e robusta?, ad apicem attenuates, ad medium subincrassatw. Caput breve, verticale. * Kepat, (cornu), frons, facies ; xpj/ords, eximius. CERICIIREntvs. ]<>:*> Thorax tmnsversus, ad basin plerumque transverse depressus. Elytra parallela, punctato-striata, plerumque tomentosa avt holo- sericea. ' Pedes: tibiis 2^osticis, a retro visis, longitvdinaliter canaliculatis,haud calearatis. Labrum transverse, sinuate. Mandibles concealed ; at their inner surface, near the base, sub- dentate. Maxillary palpi (Tab. VIII. fig. 4m) globose; the basal joint quadrate ; the second broader, and subdilated at the apex ; the third subdilated, and sometimes obliquely truncate at the apex ; the third twice the breadth of the second, and quadrate ; the fourth short and flattened. Labial palpi (Tab. VIII. fig. 4w) elongate; the first and second joints being subincrassated towards their apex ; the third elongate and cylindrical. Antennce approximate, filiform, in some species subdilated, robust, the length in the females being not more than two-thirds that in the males ; the basal joint is produced, slightly dilated, and subinflected outwards ; the third, fourth and fifth are shorter than the first, and subequal. Eyes large and prominent, situated at the base of the head ; in the males more globose than in the females. Head short, not produced in front, vertical. Thorax transverse ; the anterior angles considerably depressed ; the sides parallel, not sinuate in outline ; the base is generally more or less transversely depressed, and the surface for the most part clothed with pubescence. Scutellum triangular, situated in the plane of the elytra. Elytra broader than the thorax, parallel, sometimes subcylindrical, strongly punctate- striate, generally clothed with dark pubescence more or less concealing the punctures of the strife ; the antemedial surface is never depressed transversely. Legs : the anterior femora robust, cylindrical, subdilated towards the middle. The tibia are short, inflected at their immediate base, and gradually thickened towards the apex. The tarsi are short ; the first joint triangular, not broader than the apex of the tibiae ; the second is of the same form, but somewhat smaller ; the third is broader, more transverse, and distinctly bilobed; the fourth, pro- ceeding from the base of the third, is produced and gradually thick- ened towards the apex : the ultimate claw is bifid, and armed at its inner surface near the base with a projecting spur or tooth, which is o2 196 CERICITRESTUS. much more prominent than in adjoining groups. The posterior femora (when viewed transversely) are very much incrassated and ovate ; in the males they are distinctly more elongate than in the females. The tibia) are short, inflected at the immediate base, and longitudinally grooved along the posterior surface; this groove is "•radually deepened into a terminal socket for the reception of the base of the tarsus ; the marginatum of the groove is never, I believe, dentate, but generally subsinuate ; the apex is subdilated and ob- liquely truncate, and armed below the insertion of the tarsus with a robust double spur. The tarsus is short ; the first joint is consider- ably dilated at the apex ; the second more filiform ; the third much shorter and subcircular ; from its centre proceeds the ultimate joint, which is apically dilated into a large globular inflation completely concealing from above the terminal claw. This genus has a facies peculiarly its own, and unmistakeable. The antennae, which are generally filiform, are more attenuate to- wards the apex than in other genera ; the elytra are parallel and subcylindrical, much more elongate than in the genera Allochroma or Omototus ; the surface is generally clothed throughout with a thick and short pubescence. The sexual distinctions in this genus are evident : the males are less robust in form ; they have the antennae considerably longer, the eyes slightly more globose, the posterior femora more elongate (ex- tending nearly to the apex of the elytra), and also the basal joints of the anterior tarsi flatly and broadly dilated. 1. Cerichrestus Balii. C. oblongus, ovalis, parallelus, pubescens, niger ; capite brevi, nigro, ad apicem fulvo, ad basin fulvo maculato ; thorace transverso, subquadrato, antice coarctato, ad basin transverse depresso, nigro- pubeseenti, ad latera Icete aureo marginato ; elytris elongatis, punctato-striatis, ad liumeros fulvo notatis ; antennis robidepressus, punctato-striatus, sub- til Iter pubescens, fusco-niyer ; capite brevi, clepresso, yranulato, antice Jiavo, ad basin niyro ; thorace transverso, ad basin sub- coarctato et transverse depresso, subtiliter pubescenti, jiavo, ad medium fusco adumbrato ; elytris depressis, punctato-striatis, obsolete fusco-pubescentibus ; antennis filiformibus, sat robustis, niyris ; pedibus Jlavis, tibiis tars isque fusco adumbratis. Long. corp. 2\ lin., lat. 1 lin. Oblong-oval, somewhat depressed, parallel, punctate -striate, finely clothed with obsolete fuscous pubescence, fuscous. Head short, vertical, slightly produced in front ; below the insertion of the an- tennas is a transverse triangular depression, at the base of the antennae the surface is obsoletely raised ; the base of the head is coarsely granulated, and in colour black ; the eyes are large, globular, lateral, and situated at the base of the head. Thorax transverse, rectangular ; the sides are at the base slightly constricted and marginate ; at the base is a broad transverse depression; the surface is equate and thickly pubescent; the colour is flavous, being, medially, broadly adumbrated with fuscous. Scutellum minute, fuscous. Elytra broader than the thorax, depressed, parallel, punctate-striate (the punctures being obsolete, and the striae deep), and clothed with a minute, but thick, fuscous pubescence ; the colour dark fuscous. Antennce fili- form, tolerably robust, black. Leys flavous, more or less clouded with fuscous. C. Jiumilis differs from most of the species in the group by the absence of markings on the elytra; and from those which, like it, 204 CERICHRESTUS. are concolorons as to their elytra, by its smaller size and form of thorax. From the district of the River Amazon. Taken by Mr. Bates. 9. Cerichrestus flavicans. (Tab. VIII. fig. 5.) C. oblongo-ovatus, sulparallelus, niger ; capite brevi, depresso, inter oculos T foveolato, punctato, nigro, ad basin late Jlavo notato ; thorace transverso, subpubcscenti, punctato, ad medium late longi- tudinal iter Jlavo vittato ; elgtris sat latis, punctato-striatis, jlavo fasciatis, et apud marginationem (a fascia transversa ad humeros) jlavo vittatis ; antennis robustis, subdilatatis, nigris, art. 9-11 testaceis ; pedibus fuscis, femoribus (ad basin) et tibiis posticis jlavis. Long. corp. 2\ lin., lat. 1-1^ lin. Oblong-ovate, subparallel, subrobust, black. Head short, much depressed, slightly produced ; eyes large, prominent, black ; above the insertion of the antennas is a T-shaped depression, forming the boundary of two obsolete tubercles ; the surface at the base is finely punctate ; the labrum is of a bright black colour ; the siirface between the mouth and the base of the antennae is pale testaceous, above the base of the antennae fulvous (the T-shaped depression being fuscous, and a margin to the eyes broadly black). Thorax transverse, rect- angular ; the anterior angles depressed ; the sides marginate ; the surface is equate, finely pubescent, and punctate ; a broad medial longitudinal marking of flavous extends from the apex (where it is nearly the breadth of the whole thorax) to the base (where it is the breadth of the scutellum) ; the colour of the margination is fulvous. Scutellum triangular, flavous. Elytra broad, punctate-striate, finely and closely pubescent : a transverse, irregularly defined flavous fascia extends, medially, from the margination to the suture ; this fascia is connected on either side with the shoulder by a broad marginal flavous band. Antenna} tolerably long, robust, slightly incrassated towards the middle; black, the ninth to eleventh joints being pale testaceous. Legs dark fuscous, with the base of the femora and the posterior tibiae flavous. This species, though alhed to C. marginicollis, is clearly distinct; the colour of the thorax and the form of the marking of the elytra, besides the diversity in the sculpturing of the head, amply separate it. From the district of the Amazon. Taken by Mr. Bates. 10. Cerichrestus marginicollis. (Tab. VIII. fig. 6.) C. oblongo-ovalis, sat robustus, subpubescens, niger; capite brevi, infer oculos longitudinalidr leviter carinato, ad basin granulato, CERICHRESTUS. 205 inter ocidos suffuse fusco bimaculato ; thoraee transverso, flavo- pubescenti, flavo, ad latera (antice) rufo-fusco ; elytris robustis, subparallelis, punctato-striatis, svbtiliter pubescentibus, a Jiurru ris usque ad postmediam suturam oblique jlavo-vittatis ; antennis robustis, nigris, art. 9-11 pallide testaceis ; pedibus fuscis, femo- ribus jiosticts ftdvis, tarsisque posticis rufo-fulvis. Long. corp. 2 lin., lat. 1 lin. Oblong-oval, tolerably robust, subpubescent, black. Head short, depressed, subelongate ; eyes large, prominent, extending laterally as far as the anterior angle of the thorax ; between the mouth and the base of the antennae is a transverse triangular plane depression ; above the insertion of the antennae is an obsolete medial longitudinal ridge ; the surface below the eyes is in colour testaceous (the mouth being broadly fuscous), above the eyes it is granulated and black, with two suffused fuscous markings at the posterior margins of the eyes. Thorax transverse, rectangular ; the anterior angles are depressed ; the sides marginate ; the surface is depressed, equate, flavo-pubescent, and in colour flavous, with a margination (more broadly anteriorly) of fuscous, and an obsolete longitudinal medial marking of rufo- fuscous. Scutellum triangular, flavous. Elytra robust, subparallel, punctate-striate, closely and finely pubescent, black : between the fifth and the eighth stria?, a longitudinal band (which does not touch the margination) extends from the shordders nearly to the apex (being rounded off as it approaches the apex from the margination to the suture) ; its inner boundary is deflected abruptly and trans- versely towards the suture near the middle of the elytra, the whole forming an irregular semi-ovate band, the breadth of which is con- siderably greatest near the apex. Antenna; robust, with a tendency to dilatation ; in colour black ; the ninth to eleventh joints pale testaceous. Legs fuscous ; the anterior femora being testaceous, the base of the posterior femora fulvous, and the posterior tarsi rufo- fulvous ; the globular inflation above the posterior claw bright piceous. C. marginicolUs and the preceding species, C.flavicans, are excep- tions to the general character of the genus, in that they have their elytra broadly and distinctly marked with flavous colour : this species is readily separated from C. flavicans by the triangular marking below the base of the antennae, as well as by the obsolete longitudinal cari- nation at the apex of the head ; it is more obviously separated by the disposition of its markings on the thorax and the elytra. From the district of the Amazon. In the collections of Mr. Bates and the Rev. H. Clark. 206 CALIPEGES. Genus 34. CALIPEGES*. La brum breve, subcirculare. Palpi maxillaees incrassati, art. 3n° pome rotnndato, lata, ultimo conico. Antennae robustce, incrassatce, art. 4'°-81"' dilatatis, brevibus. Caput breve, antice attenuatum, ad basin punctatum. Thorax quadratics, elytris constrictior, subglobosus. Elytra sat lata, cylindrica, fossa transversa ante medium antice punc- tata, ad apicem impunctata, glabra, obsolete pube sparsim (ad latera, apicem, et depressionem transversam) vestita. Pedes robusti ; tibiis posticis brevibus, rectis, Jiaud calcaratis ; tarsis brevibus, attenuatis. Labrum small, narrow, subcircular. Maxillary palpi (Tab. VIII. fig. 7 m) robust ; the first joint minute; the second incrassated, and apparently obliquely truncate at the apex ; the penultimate joint is globose, rounded at the sides, the length being equal to the breadth, transversely truncate at the apex ; the last joint is smaller, although broad at the base, acuminate, the length being distinctly greater than the basal breadth. Labial palpi elongate, minute; in the example before me hardly appreciable in consequence of injury or decay. Antenna? (Tab. VIII. fig. 7 a) robust, strongly dilated ; the first joint attenuate at the base, elongate, and incrassated towards the apex; the second ovate, somewhat shorter but not narrower than the first, ovate, attenuate at the base ; the third of equal length with the first, fine and attenuated at the base, and dilated towards the apex ; the fourth to the eighth considerably incrassated, clothed with fine pubescence ; the ninth to the eleventh more elongated and attenuated. Eyes lateral, situated at the base of the head, circular, subglobose. Head short, transverse, slightly produced, and attenuate in front ; below the base of the antennae is a transverse depressed plane ; above this plane is a minute longitudinal medial channel, passing between the basal joints of the antennae ; the surface of the head at the base is sparingly but deeply and coarsely punctate. Thorax somewhat broader than the head, but considerably narrower than the elytra, quadrate in form, almost elongate; the anterior angles are somewhat rounded ; the base is constricted and slightly transversely subdepressed ; the surface is subglobose in C. crisjms, sparingly punctate, and obsoletely pubescent. Scutellum triangular, impunctate. Elytra decidedly broader than the thorax, short, with a deep ante- * KaXos, bonus ; iriiyvvfii, firmo. CALIPEGES. 207 medial depression which extends transversely nearly to the margina- tion ; this depression gives a prominence to the surface near the scutcllary angles, and also (viewed laterally) to the medial disk : the surface is, antemedially, deeply and sparingly punctate ; post- medially, and especially near the apex, impunctate ; the surface at the apex, sparingly near the sides, and in the transverse depression is flavo-pubescent. Legs robust. The anterior femora are subcylindrical, attenuated at the apex and base. The tibia; are short, straight, and cylindrical, hardly thickened towards the apex. The tarsi are short ; the basal and second joint subequal in form (the second joint being shorter and comparatively broader) ; the third joint is broader, ovate, and bilobed ; the apical claw is bifid, and unarmed at its under surface with any claw. The posterior femora are broadly incrassatcd, short, not ex- tending so far as the apex of the elytra. The tibia is short and robust, straight, gradually thickened towards the apex ; the posterior margination is straight ; the apex is broadly obliquely truncate, and is terminated by a double robust claw below the insertion of the tarsus. The tarsus is also short, attenuated. An interesting form, allied to some species of Cerichrestus by its distinctly dilated antennae ; but abundantly distinct by reason of its more cylindrical body, and marked transverse depression of the elytra. 1. Calipeges crispus. (Tab. VIII. fig. 7.) C. oblongo-ovatus, subparallelus, robustus, subtiliter pubescens, cas- taneus ; capite subp>roducto, punctato ; thorace quadrato, ad basin constricto et transverse subdepresso ; elytris parallelis, robustis, subcylindricis, ante medium fortiter transverse depressis, striato- punctatis ; antennis art. 4-8 incrassatis, 1-8 fusco-ferrugineis, 9-11 jlavis ; pedibus fidvis. Long. corp. 11 lin., lat. |— | lin. Oblong-ovate, subparallel, robust, very finely pubescent, of a dark castaneous colour. Head short, transverse, slightly produced in front ; above the labrum is a transverse triangular carination ; and above the insertion of the antennae, and between the eyes, is an obsolete, obliquely transverse ridge of the form of the letter V ; the surface is deeply but sparingly punctate ; eyes large, situated at the base of the head, extending laterally almost as far as the anterior angles of the thorax. Thorax quadrate (tho length being perhaps slightly greater than the breadth), constricted towards the base ; the anterior angles are depressed and subacute ; the sides are marginate ; at the base is a broad transverse depression, which is most distinct (viewed laterally) near the basal angles ; the surface is sparingly piinetate, 208 OMOTOTUS. clothed throughout with fine and almost obsolete fulvous pubescence. Scutellum minute. Elytra parallel, robust, subcylindrical, short : a very distinct transverse depression extends antemedially from the suture to the sixth or seventh stria ; this depression gives an appear- ance of prominence to the surface near the base ; punctures arranged in the form of striae, which are large and distinct near the base, are almost obsolete as they approach the apex : the surface is clothed throughout very sparingly with fine long single bairs, and underneath these with a very fine flavous pubescence. Antenna; robust, strongly dilated ; in colour, the first to the third joints are ferrugineous, the foxu'th to the eighth dark fuscous, the ninth to the eleventh flavous. Legs fulvous throughout. Para. In the collection of M. Chevrolat. Genus 35. OMOTOTUS*. Dej. Cat. (1837), p. 407. Palpi maxillares breves, subdilatati. Palpi labiales clongati. Antenn je fili 'formes, robustce, interdum ad apicem subtlliter incrassatce. Caput breve, transversum, pcene vertieale, rugosmn. Thobax transversus, aliquando subquadratus, interdum etiam ad latera obscure dentatus. Elytra brevia, robusta, plerumque pube vestita. Pedes: tibiis posticis longitudinal iter canaliculars et calcaratis. Maxillary palpi (Tab. YIII. fig. 8 m) short, robust; the first joint minute ; the second broader, and gradually dilated towards the apex ; the third short, and broader than the second (the breadth being equal to the length) ; the terminal joint is broad, subglobose and flat. Labicd palpi (Tab. VIII. fig. 8 n) elongate, narrower than the maxillary palpi ; the basal joint robust, the penultimate narrow and cylindrical, the ultimate joint attenuate. Antenna; approximate, situated between the lower margins of the eyes, robust, filiform ; the basal joint is dilated towards the apex ; the second shorter and more minute. Eyes lateral, situate at the base of the head. Head short, transverse, depressed at almost right angles to the plane of the thorax, hardly produced in front ; the surface is rugose, and for the most part impubescent. TJiorax transverse, in some species almost quadrate ; the anterior angles are for the most part distinct ; the sides are finely marginate and subsinuate, or produced medially into an obsolete tooth ; the * Derivatio incerta. GJ10T0TT7S. 1>09 surface is rugose and deeply granulated, generally more or less im- pubescent. Scutellum small, triangular. Elytra robust, short, distinctly broader than the thorax ; in most species clothed with a thick and very fine pubescence, punctate-striate. Legs : the anterior sufficiently elongate. The femora are incurved, attenuate at their base, and gradually thickened towards the apex. The tibiae are somewhat longer than the femora, straight, cylindrical, inflected at their immediate base. The tarsi are short ; the first and second joints being flat and broad, in form triangular; the second joint being somewhat smaller than the first ; the penultimate joint is considerably broader than the second, and deeply bilobed ; the terminal joint is connected with the third at its base, and incurved ; the apical claw is bifid, robust at the base. The posterior femora are short and broadly incrassated. The tibice (Tab. VIII. fig. 8 li) are short, incurved, and robust ; the posterior surface is flattened and, near the apex, longitudinally hollowed out into a groove terminating in a socket for the reception of the tarsus ; this groove is armed laterally with short and frequent comb-like teeth ; immediately above the insertion of the tarsus its margin is produced into a broad and distinct tooth. The tarsi are short; the two basal joints are attenuate, the second being somewhat more minute than the first ; the third joint is broader, subcircular, and somewhat longer than the second ; the apical claw is entirely concealed from above by the globular inflation of the ultimate joint. This genus is distinguished at once from CericJirestus by its more robust and broader form. The distinct pubescence on the elytra, together with the form of the posterior tibiae (which are robust, in- curved, and armed above the insertion of the tarsus with a distinct spur), sufficiently separate it from other genera. 1. Omototus morosus. B.M. Dej. MS. (Dej. Cat.). Omototus carbonarius, Chevr. (Dej. Cat.). tristis, Lacordaire (aact. Dej. Cat.). O. oblongo-ovatus, rohustus, punctato-striatus, squamosus, niger ; eapite paulum producto, inter oculos bifoveoletto,gramdato; thorace quadrato,fortiter granidato, ad latera anguJato ; eh/tris punetato- striatis, erequatis, squamosis ; antennis robustis, subjiliformibus, fuscis ; pedibus fiisco-nigris. Long. corp. 3^ lin., lat. If lin. Oblong-ovate, robust, punctate-striate, clothed with a very short and obsolete black squamose pubescence ; in colour black. Head p 210 OMOTOTT79. short, transverse, slightly produced in front : above the lahrum is a transverse triangular carination ; immediately above the base of the antennae are two distinct tubercular elevations, occupying almost the whole of the surface near the eyes (which in 0. quadripes is repre- sented by a depression) : eyes situated at the base of the head, small ; the line of the base is much less distinct than in 0. quadripes : the surface is irregularly and deeply granulated ; black. Thorax quadrate, decidedly broader in proportion to its length than in 0. quadripes ; the anterior angles are much depressed ; the sides marginate, and produced medially into a lateral angle (almost as distinctly defined as the marginated angle in Octogonotes, and very different from the subsinuation of 0. quadripes) ; the surface throughout is very coarsely and unevenly granulated. ScateUum obscure, triangular, impunctate. Elytra broader than the thorax, robust, punctate-striate, the punc- tures being quite concealed by a very thick and short squamose pubescence. Antennce robust, filiform, subincrassated towards the apex ; in colour fuscous-black. Legs robust, of a fuscous-black colour throughout (not partly flavous as in 0. quadripes). The form of the thorax (quadrate instead of transverse) and the colour of the legs seem to supply good specific distinctions between these closely allied forms ; it is possible, however, that hereafter, by the inspection of a large series of examples, it may be shown that but one single species exists, subject to some considerable variation of form and colour. Cayenne. In the collection of the British Museum, and in the cabinet of the Rev. H. Clark. 2. Omototus quadripes. Chevr. 3IS. 0. oblongo-ovatus, latus, robustus, impubescens, niger ; capite brevi, granulato ; thorace iransverso, ad latera media sidjproducio, for- titer granulato ; elytris punetato-striatis, subsquamosis ; antennis filiformibus ; pedibus piceis, femoribus et tibiis (ad basin) an- terioribus jlavis. Long. corp. 3| lin., lat. 1-| lin. Oblong-ovate, broad, robust, impubescent, black. Head short, depressed at almost right angles to the thorax, and not j>roduced in front ; above the labrum is a transverse triangular plane (the colour of which is more distinctly rufous than the rest of the surface) ; above the base of the antennae and between the eyes is a longitudinal irregular medial depression ; the eyes are situated at the base of the head ; the surface between the eyes and at the base irregularly and unevenly granulated, in colour darkly rufo-fuscous. Thorax trans- OMOTOTUS. 211 verse, broader than the head ; the anterior angles are subdepressed ; the sides marginato and, medially, obsoletely dilated or subsinnate in outline ; the surface is uneven and irregular in form, broadly but slightly depressed at the base, and coarsely granulated throughout ; the colour black. Scutellum small and triangular. Elytra broader than the thorax, robust, finely punctate-striate ; when viewed under a high magnifying power, the surface between the striae is finely punctate, and also towards the apex apparently clothed with thick, fine squamose pubescence. Antennae filiform, short, robust, piceous. Legs piceous ; the anterior femora and part of the tibiae flavous. Cayenne. 3. Oinototus tuberculatus. 0. ovatus, latus, robustus, pubescens, fuliginosus ; capite brevi, inter oculos bituberculato ; ihorace quadrato, angulis anticis valde de- presses, ad apicem bituberculato, ad basin transverse depresso ; elytris lath, robustis, striato-punctatis, ad medium nigro- aut fusco-, ad apicem irregulariter testaceo-pubescentibus ; antennis ad apicem subincrassatis, art. 1-6 fidvis, 7 et 8 testaceis, 9-11 fuscis; pedibus, tibiis posticis subincurvatis, pkeis, tarsis posticis rufo-fuscis. Long. corp. 2| lin., lat. 1^ lin. Ovate, broad, robust, pubescent, fuliginous. Head short, trans- verse, depressed, slightly elongated in front ; eyes moderately large, situate at the base of the head ; above the labrum is a transverse triangular depression with a medial obsolete longitudinal carination : immediately above the insertion of the antennae are two medial abrupt tubercles, while above them (at a somewhat greater distance from each other) are two others, less prominent (almost obsolete) ; these are separated from the basal line by a short medial transverse depression which is divided by a longitudinal carination : the surface is irregularly clothed with flavous pubescence. Tliorax quadrate, rectangular ; the anterior angles are much depressed ; the sides mar- ginate : two broad and prominent tubercles occupy the antemedial part of the disk ; between them and the basal line is a transverse broad shallow depression : the surface is flavo-pubescent, especially near the base. Scutellum small, almost obsolete, triangular. Elytra broad, robust, covered with very coarse punctures arranged as striae ; near the scutellary angle the surface (when viewed laterally) is slightly raised, and covered throughout more or less with short scattered pubescence ; at the shoulders this pubescence is hardly ap- parent ; it assumes, medially (towards the margination and at the suture), a fuscous or dark ferrugineous hue, while postmedially are several unconnected small patches of yellowish-white pubescence. r 2 212 0M0T0TIXS. Antennce tolerably long-, robust, slightly incrassated towards t la- apex ; the first and second joints fulvous, the third and fourth rufo- fulvous, the fifth and sixth rufo-fuscous, the seventh and eighth (which are much shorter than any of the preceding) pale testaceous, the ninth to eleventh dark fuscous. Legs tolerably long and robust, the posterior tibiae being somewhat incurved towards the apex, of a piceous colour throughout ; the posterior tarsi (and the base of the tibiae) are rufo-fuscous ; the globular inflation above the apical claw dark rufous. This species may be separated from its congeners by its greater size, and dark fuliginous colour ; from 0. fuliginosus (to which it is most nearly allied) it may be separated by the prominent tubercles on the thorax as well as its somewhat larger size, and by the irregular patches of white pubescence near the apex of the elytra. Bogota. In the collection of Mr. Waterhouse. 4. Omototus braccatus. 0. ovatus, latus, robustus, subtiliter pubescens, rugosus, nkjer ; capiti depresso, ad basin bituberculato, granulato; thorace transversa, antice compresso, bitubemdato, rugoso ; elytris ad scutellum un- diqtu tuberculatis, quatuor, etiam aut quinque tuberculis inferio- ribus, svbtiliterpuJ>escentibus,$parsimpunctatis : antennisfulvis ; pedibus piceis, tibns anterioribiis ftdvo vittatis, tibiis 2>ostkis (fe- moribusque extremis) firfvis. Long. corp. 3 bin., lat. If lin. Ovate, broad, robust, apparently impubescent (except when viewed under a high power), black. Head short, transverse, depressed at right angles to the thorax, and slightly produced in front ; imme- diately above the base of the antennae is an obsolete transverse de- pression, which gives, at its upper margin, prominence to a raised transverse ridge, which does not extend laterally so far as the inner margin of the eyes ; above, and unconnected with these, at the base of the head, are two distinct tubercles : eyes tolerably large, situated at the base of the head, not extending laterally so far as the anterior angles of the thorax ; the surface throughout is coarsely and roughly granulated. Thorax considerably broader than the head, transverse (the breadth being not much greater than the length) ; the anterior angles are distinct, and depressed ; the sides slightly marginate and anteriorly compressed ; in front are two medial and longitudinal tubercles, on the outer sides of which are disposed other irregular carinations ; the whole surface being coarsely and unevenly granu- lated. Scutellum large, triangular, clothed with short flavous pubes- OMOTO] OS 213 fence. Elytra much broader than the thorax, robust, with deep and irregularly scattered punctures arranged throughout in the form of stria?; near the scutcllary angles are two broad and prominent tubercles, while behind them, occupying the whole of the surface nearly as far as the apex of the elytra, are distributed five others, irregularly disposed, and in form slightly longitudinal ; the humeral angles at their extremity are distinctly gibbous, so that the breadth across the shoulders is greater than the medial breadth; 1 1 1< - whole surface is uneven and irregular, and clothed throughout (when viewed under a high power) with a short and thick piceous pubescence. An- tennae-, the two basal joints fulvous (the rest, in the example before me, arc wanting). Legs piceous ; the posterior tibia? and the extreme apex of the femora fulvous ; the anterior tibia? arc banded with fulvo- fuscous. Brazil. In the collection of M. Chevrolat. 5. Ornototus nodosus. (Tab. VIII. fig. 8.) O. ovatus, brevis, robustus, griseo et fusco pilo omnino vestitus ; capite brevi, inter oculos transverse tubercidato, ad basin granu- lato ; ihorace transverso, ad medium bitvherculaio, ad basin valde ■ et transverse depresso, einereo, et ad late ra fidvo-pubescenti ; elytris latis, ad scutellum bituberculatis, 2nm<^(iio-striatis, pilo einereo, fidvo, et rufo-fusco vestitis ; antennis art. 6-11 incrassatis, 1-8 tcstaceis, 9-11 pallide fuse is ; pedibus rufo-fuscis, femoribus posticis fuscis. Long. corp. 2^ lin., lat. 1^ lin. Ovate, short, broad, clothed throughout with different shades of griseous and fuscous pubescence. Head short, depressed anteriorly, not produced ; between the eyes (which are large and somewhat prominent) are two transverse tubercles (varying in direction and in prominence in different examples) of a more distinct rufous colour ; the upper surface is finely granulated. Thorax transverse ; the an- terior angles are depressed and indistinctly subacute ; at the base is a broad and deep transverse depression, while above this depression are two veiy prominent tubercles ; the surface is clothed throughout with grey, ashy- grey, and (near the sides) fulvous pubescence. Scu- tellum small, triangular. Elytra broad, short, deeply punctate-striate, with two prominent tubercles near the scutellum, clothed through- out (like the thorax) with grey, fulvous, and rufo-fuscous pubescence. Antennce short, gradually incrassated towards the apex (between the sixth and eleventh joints) ; in colour, the first joint to the eighth are testaceous, the ninth to the eleventh pale fuscous. Legs rufo-fuscous, the posterior femora being fuscous. 214 OMOTOTTTS. This insect is very nearly related to 0. tuberculatus ; it has the same prominent tubercles on the thorax and near the scutellum ; it is also clothed like that species with different shades of pubescence : the thorax, however, is more transverse, less quadrate ; the depression at the base of the thorax is more distinct, and (when viewed laterally) the tubercles are more prominent and. pyramidal ; the pubescence also is generally darker. From the district of the Amazon Eiver. In the collections of Mr. Baly, Mr. Bates, and the Rev. H. Clark. 6. Omototus Dohrnii. 0. oblongo-ovatus, robustus, punctato-striatus, pubescens, ferru- gineus ; capite brevi, inter oculos oblique foveolato ; thorace trans- verso, antice elevato et bicarinato ; elytris robustis, punctato-stri- atis, ante medium oblique depress is,fidvo- vel fusco-pubescentibus ; antennis robustis, subtil iter dilatatis, art. 1-AJtavis, 5 et 6 rufo- flavis, 6 et 7 testaceis, 8-11 jiavo-fuscis ; pedibusjlavis, femori- bus posticis infra fuseo suffusis. Long. corp. 2-21 lm., lat. 1-11 lin. Oblong-ovate, robust, punctate-striate, pubescent, ferrugineous. Head transverse, slightly produced, depressed at right angles to the plane of the elytra ; above the labrum is a transverse triangular plane ; immediately above the insertion of the antennae is a short longitudinal fovea (not extending to the basal line of the head), on either side of which is a minute oblique carination, made more ap- parent by depressions at the inner margins of the eyes ; the eyes are large and prominent, situated at the base of the head, extending laterally beyond the anterior angles of the thorax ; the surface at the base is finely punctate. Thorax transverse (almost quadrate), sub- cylindrical ; the anterior angles depressed and obscure ; the sides subsinuate and marginate ; the posterior angles are considerably de- pressed, and the anterior medial disk elevated, and impressed with a broad longitudinal furrow, raising the surface immediately on either side of it into an oblong ridge or tubercle ; the siuface is very finely and thickly pubescent. Scutellum triangular. Elytra robust, con- siderably broader than the thorax ; a broad antemedial depression extends obliquely upwards to the shoulders, giving an appearance of prominence to the scutellary angles ; punctate-striate (the punctures being entirely concealed by a thick and short pubescence) ; the colour of this pubescence is for the most part ferrugineous, clouded (especially near the scutellum) with dark fuscous, and interspersed (especially at the oblique depression and near the suture) with irregular minute OMOTOTUS. 215 spots of pale cinereous. Antennae robust, finely dilated towards the apex ; the first to fourth joints flavous, fifth and sixth rufo-flavous, sixth and seventh testaceous, eighth to eleventh flavo-fuseous. Legs flavous, suffused with rufous; the posterior femora on their under surface being darkly fuscous. This species differs from 0. nodosus in its less transverse and narrower thorax; from 0. Cayensis by its larger and more robust form, and by the more depressed basal angles of the thorax. From Surinam (Paramaribo). In the collections of Hcrr Dohrn and the Rev. H. Clark. 7. Omototus nubilus. (Edipodes nubilus, Drj. Cat. ed. 3. p. 408. modestus, Lacordaire (auct. Dej. Cat,). 0. oblongo-ovatus, robustus, latus, punctato-striatus, fusco- etjiavo- pubescens; capite brevi, haud producto, inter oculos transverse depresso, flavo, ad basin fusco ; thorace transverso, antice bitu- beradato, ad basin transverse depresso, ferrugineo, ad latent fusco; elytris latis, robustis, punctato-striatis, ante medium obsolete de- pressis ; antennis ad apicem subincrassatis, articidis 1-4 jiavis, 5et6 rufo-fuscis, 7 et 8 testaceis, 9-11 fuscis; pedibusflavis, tarsis anterioribus femoribusque posticis fusco suffusis, tibiis tarsisque posticis rufo-fuscis. Long. corp. 2 lin., lat. 1 lin. Oblong-ovate, robust, broad, punctate-striate, clothed throughout with a fusco-fiavous pubescence. Head short, transverse, slightly produced in front : between the labrum and the base of the antennas is a transverse plane and glabrous depression ; at the insertion of the antennas is a medial longitudinal fovea, sharply defined and narrow, extending upwards and meeting a broad transverse depression which connects the inner margins of the eyes ; the eyes are large and tole- rably globose, situated at the base of the head ; the surface is very finely clothed throughout with flavo-testaceous pubescence ; in colour flavous, the base being margined with fuscous. Thorax transverse, rectangular ; the anterior margin subemarginate ; the sides distinctly marginate : at the antemedial centre of the disk are two oblong and distinctly prominent tubercles ; behind these, a transverse depression at the base extends not quite so far as the basal angles, but subcir- cularly upwards; at the lateral margins (immediately above the marginatum) on either side are two smaller tubercles : the surface is clothed throughout with fine flavo-Mvous pubescence ; the colour being ferrugineous, suffused at the sides with fuscous. Scutettmn 216 OMOTOTUS. minute, triangular, imptmctate, ftiscous. Elytra considerably broader than tbe thorax, robust, short, punctate-striate, the striae being shallow and almost concealed by a thick irregular pubescence, and the punctures being regular and more distinct ; the surface is clothed with a thick flavo-fuscous pubescence, irregularly mottled with flavous and ashy-grey : an antemedial transverse obsolete depression extends obliquely upwards to the outer margins of the humeral angles, thus giving an appearance of prominence to the surface near the scutellary angles ; the extreme apex of the humeral angles also is subprominent, causing the striae near it to be slightly sinuate. Antenna sufficiently fine, subincrassated towards the apex ; the third joint is very considerably longer than any of the others, and the basal joints of the same breadth as the first ; in colour, the joints first to fourth are flavous, fifth and sixth rufo-fuscous, seventh and eighth testaceous, and ninth to eleventh fuscous. Legs flavous, the anterior tarsi and posterior femora being suffused with fuscous, and the posterior tibiae and tarsi rufo-fuscous. This species approaches 0. Dokrnii in form and general character ; it is, however (besides the less piceous and more flavous colour of its pubescence), shorter and more robust, and the basal depression of the thorax is broader and more distinctly defined. From 0. nodosus it differs also in its shorter form and in the different arrangement of markings on the head, and its less prominently bituberculated thoracic disk. From other species of the group (all of which re- semble each other more or less in general appearance) it may be separated by its manifest difference in size. Cayenne. In the collection of M. Chevrolat. 8. Omototus Cayensis. O.oblonyo-ovatus, latus, robustus, punctato-striatus, fusco- et fidvo- pubescens ; capite brevi, inter ocidos transverse d&presso, ad basin rufo-flavo, flavo-pubcscenii ; thorace transverso, rectanyulari, lateribus maryinatis, antice globoso, bitubereidato, ad anyidos basales depresso ; elytris latis, punctato-striatis, ad scutelhim yibbosis, fulvo- aut fusco- irreyulariter pubescentibus ; antennis sidmicrassatis, art. 1-4 et 7 et 8jiavo-testaceis, 5, 6, 9-11 fuscis ; pedibus anterioribus jiavis, tarsis tibiarumque apicibus fusco suffusis. Long. corp. 2 lin., lat. 1 lin. Oblong-ovate, broad, robust, punctate-striate, clothed throughout with a fine but close fuscous or fulvous pubescence. Head short, transverse, depressed, not produced in front ; above the labrum is a OMOTOTUS. 217 narrow transverse smooth depression, extending from which, as far as the hase of the antennae, is a minute medial carination : eyes pro- minent, globose, extending laterally as far as the anterior angles of the thorax ; between the eyes is a medial longitudinal fovea, which reaches (at its upper extremity) an almost imperceptible transverse depression ; at the base of the head the surface is rufo-flavous ; clothed throughout with flavous pubescence. Thorax transverse (almost quadrate), rectangular ; the sides are marginatc, and the line of the base subsinuate ; at the antemedial portion of the disk the surface is prominently raised, being divided into two oblong eleva- tions by a broad longitudinal anterior depression ; the base is com- paratively depressed, more distinctly at the postical angles ; the sur- face is clothed throughout with a rich fulvous pubescence. Scutellum triangular, pubescent. Elytra considerably broader than the thorax, subparallel, punctate-striate, the punctures being quite concealed by thick pubescence ; the surface near the scutellum is distinctly gib- bous ; the colour of the pubescence is very varied : near the margi- natum and at the base it is rufous, rufo-ferrugineous being the prin- cipal colour ; near the suture (between the second and third striae) there are three distinct but small markings of ashy- white colour ; between these the surface is principally dark fuscous. Antenna; subincrassated gradually towards the apex ; the first joint being broad, but elongated ; the second short and ovate ; the third and fourth attenuated, of equal length with the first ; the fifth to eighth shorter and more dilated; the ninth to eleventh broader, and not longer, than the second ; in colour, the joints first to fomth and seventh and eighth are flavo-testaceous, the fifth, sixth, and ninth to eleventh are darkly fuscous. Legs robust ; the anterior flavous, the tarsi and apex of the tibiae being suffused with fuscous (the posterior legs in the example before me are wanting). This species differs from 0. fidvo-pubescsns in the colouring of its antennae, in the less deeply-marked striae on the elytra, and in its more close as well as differently marked pubescence. Cayenne. In the collection of M. Deyrolle. 9. Omototus fulvo-pubescens, 0. oblongo-ovatus, latus, robustus, punctato-striatus, fulvo-pubes- cens ; capite brevi, flavo-pubescenti, ad apicem rufo, ad basin fusco; ikorace transverso, rectangulari, lateribus subsinvatis, a itt ice elevato, bitubercidato ; elytris latis, robustis, subparallel is, punctato-striatis, ad basin elevatis, flavo-fusco, fulvo- et tcstaceo- (irregulariter) pubescentibus ; antennis incrassatis, art. 1-8 fla- 218 0M0T0TU9. vis, 9-11 rufo-ferrugineis; pedibus ant ids jlavis, mediis et pos- ticis rufo-ferrugineis. Long. corp. 2 liu., lat. 2 lin. Oblong- ovate, broad, robust, subparallel, deeply punctate-striate, clothed throughout with a fine fulvous (interspersed with fulvo-fus- cous) pubescence. Head short, transverse, slightly produced in front ; above the labrum is a transverse glabrous carination : eyes tolerably large, extending laterally as far as the anterior angles of the thorax ; between the eyes is a transverse and obsolete (almost imperceptible) depression : the surface is flavous, clothed with a flavous pubescence ; the colour near the labrum being rufous, and at the base fuscous. Thorax transverse, almost quadrate, rectangular ; the anterior angles subdepressed ; the sides obsoletely marginate and obscurely sinuate (not, as in 0. Cayensis, rectilinear) ; the anterior medial disk is elevated, and is divided into two parts by a broad and tolerably deep longitudinal depression, thus forming two distinct antemedial tuber- cles ; the base is transversely depressed, more deeply at the basal angles ; there is also a slight depression close to the subsinuation of the sides (which is not represented in 0. Cayensis) ; the surface is in colour flavous, clothed throughout with flavous pubescence, medially more darkly flavous. Scutellum triangular, clothed with fusco- flavous pubescence. Elytra robust, considerably broader than the thorax, subparallel, punctate-striate, neither the punctures nor the strise being concealed by the pubescence ; near the scutellary angles the surface is distinctly raised, and rendered more prominent by an antemedial depression, which does not exist in 0. Cayensis ; the sur- face is clothed throughout with a flavous pubescence, irregularly mottled with flavo-fuscous and ashy-grey. Antennce incrassated towards the apex ; the joints first to eighth being flavous, and ninth to eleventh rufo-ferrugincous. Legs : the anterior flavous ; the me- dial and posterior rufo-ferrugineous. Paramaribo, Dutch Guiana. From the collection of Herr Dohrn. 10. Omototus bituberculatus. 0. ovatus, robustus, subpubescens, fusco-ferrugineus ; capite brevi, super antennarum basin oblique foveolato, dnereo-pubescenti (ad basin piceo suffuso) ; thorace quadrato, antice bitubercidato, pilo dnereo vestito ; elytris latis, punctato-striatis, pubescentibus, ad scutellum et suturam nigro-fuscis, ad latera nigro-fiavis sparsim- que dnereis ; antennis std)inerassatis, art. 1-6 Jlavis, 7 et 8 tes- taceis, 9-11 fuscis ; pedibus pallide testaceis. Long. corp. 2±-2L lin., lat. 1^ lin. OMOTOTUS. 219 Ovate, robust, subpubescent, in colour fusco-ferrugineous. Head depressed, slightly produced ; eyes large and prominent, extending as far as the lateral margin of the thorax : below the base of the antenna) is a transverse triangular depression ; immediately above it is an obsolete fovea in the form of the letter V ; on either side of this fovea the eyes arc margined by a longitudinal depression ; the surface of the head is clothed entirely with an ashy-grey pubescenco (at the base suffused with piceous). • Thorax quadrate ; the anterior angles depressed ; tho sides submarginate ; the antemedial siu'face is raised, and forms two distinct and prominent tubercles ; the whole surface clothed with an ashy-grey pubescence. Scutellum small, triangular, fuscous. Elytra broad, punctate-striate, completely covered with a thick short pubescence ; the colour near the scutel- lary angles and along the suture is dark fuscous, at the sides dark fiavous interspersed with ashy-grey. Antennce slightly incrassated towards the apex ; joints first to fourth fiavous, fifth and sixth fusco- flavous, seventh and eighth testaceous, ninth to eleventh fuscous. Legs pale testaceous, suffused with fuscous. Brazil. In tho collection of the Eev. H. Clark. 11. Omototus artitus. 0. ovatus, latus, subrobustus, pubescens, fuscus ; capiie brevi, inter oculos transverse depresso ; thorace transversa, ad basin depresso, antice elevato et longitudinaliter foveolato ; elytris sat talis et robustis, punctato-striatis, irregular iter ccelatis, ante medium oblique depressis ; antennis subincrassatis, Jtavo-fuscis ; pedibus anterioribus jiavis, posticis fuscis, tarsis Jiavis. Long. corp. 24- lin., lat. 1\ lin. Ovate, broad, subrobust, finely but irregularly pubescent, darkly rufo-fuscous. Head short, transverse, not produced ; eyes tolerably large, situated at the base of the head, extending laterally as far as the anterior angles of the thorax ; above the labrum is a transverse plane depression ; between the eyes is a very minute longitudinal fovea, well-defined and thread-like, which reaches at its upper ex- tremity a broad and shallow transverse depression extending between the inner and upper margins of the eyes : the surface (when viewed under a high power) is finely granulated and sparingly pubescent ; in colour rufo-fuscous, at the base more darkly fuscous. Thorax transverse (nearly quadrate) ; the anterior angles are depressed ; the sides marginate, and in outline subsinuate. ; the anterior margin is subemarginate, the posterior slightly subsinuate : the base is occu- pied by a broad transverse depression, well-defined and deep; it 220 OMOTOTUS. extends obliquely upwards in the direction of (without reaching) the anterior angles, and gives a distinctly gibbous appearance to the anterior and medial portions of the disk; this prominent anterior eminence is sharply and deeply bisected by a broad longitudinal furrow : the surface is finely fiavo- or rufo-pubescent throughout. Scutellum triangular, impunctate, fuscous. Elytra broader than the thorax, robust, punctate-striate, the punctures and almost the stria) being concealed by an irregular but thick pubescence ; the surface is marked throughout by slight elevations and depressions : anteme- dially a broad shallow depression extends obliquely upwards towards the anterior angles ; the anterior angles themselves are prominently gibbous ; the scutellary surface is raised ; and (when viewed from behind) two obsolete circular elevations are apparent postmedially, one on either side of the suture. Antennae subincrassated towards the apex ; the first joint broad, ovate ; the second much shorter and narrower than the first ; the third to the sixth fine, and of length equal to the first ; the seventh to the eleventh dilated, broader than the first and hardly longer than the second ; in colour, the first to the sixth flavous, the seventh and the eighth of a paler testaceous colour, the ninth to the eleventh pale fuscous. Legs : the anterior flavous throughout ; the posterior fuscous, the tarsi being flavous, and the globular inflation of the posterior claw brightly rufo- fuscous. From 0. bltuberctdatus this species may be separated by the more piceous and differently distributed colouring on tbe elytra, and by its more prominently globose scutellary angles ; from 0. /meatus it dif- fers by its thick pubescence, and from 0. ftdvo-pubescens by the irregularly coloured (not concolorous) pubescence on the elytra. Cayenne. 12. Omototus fuscatus. 0. ovatus, latus, robustus, sxd)pubescens, fusco-piceus ; thorace qua- drato, rectangular!, cluobus antemedus tuberculis notato, ad latera et ad medium, longitadinaliter, jiavo-pubescenti ; elytrls latis, robustis, valde punetato-striatis, subpubescentibus ; antennis ro- bustis, ad apicem incrassatis, jiavis, art. 5, 6 et 9-11 fusco- ferrugineis; pedibus anticis jiavis, posticis fuscis, tarsis tibiisque ad basin rufo-fuseis. Long. corp. 2 lin., lat. li lin. Ovate, broad, robust, subpubescent, fusco-piceous. Head short, slightly produced ; below the base of the antennae is a transverse ridge ; eyes large and prominent ; the surface of the head flavo- subpubescent. Thorax quadrate, rectangular ; the anterior angles 0M0T0TUS. 221 depressed ; tho sides slightly marginate ; tlie antemedial surface is raised and longitudinally foveolated, thus forming two obsolete broad tubercles ; the surface is clothed with pubescence, a medial longitu- dinal line and also the sides being flavo-pubescent. Scutellum trian- gular, impunctate. Elytra broad, robust, deeply punctate-striate, clothed (more sparingly than the thorax) with indistinct pubescence. Antennae short, tolerably robust, incrassated at the apex ; flavous, with the fifth, sixth, and ninth to eleventh joints fusco-ferrugineous. Legs : the anterior flavous ; the posterior fuscous (the tarsi and the base of the tibiae being rufo-fuscous) ; the globular inflation of the posterior claw bright rufous. A single specimen was taken at Santarem (River Amazon) by Mr. Bates. 13. Omototus bimaculatus. 0. oblongo-ovalis, luridus, jiavo pilo holosericeo omnhio vestitus ; capite subprodueto, punctato ; thorace transversa), mairginato, ad basin pavulo aittenuato ; elytris robustis, punctato-striatis, bimat- cidatis (maculce nigrce rotimalatae parvan) ; antennis robustis, art. 6-9 alilatactis, nigris, reliquis Jlavis ; pealibus subpubescentibus, jiaivis. Long. corp. 2| lin., lat. \\ lin. Oblong-oval, broad, robust, parallel, covered throughout with a short and thick yellow pubescence. Heaul short, transverse ; below the insertion of the antennae is a transverse triangular depression : eyes large, situated at the base of the head, not extending laterally so far as the angles of the thorax ; between the eyes is an obsolete oblique fovea in the form of the letter V : the surface is finely punc- tate. Thorace transverse ; the anterior angles depressed and slightly rounded; the sides marginate, more especially near the anterior angles ; surface equate. Scutellum triangular, fuscous. Elytra broad, subparallel, robust, punctate-striate, with two slightly raised black pubescent spots (small and circular) placed medially between the third and fourth striae. Antennae short and robust; the first and second joints much dilated, the third to fifth slender, the sixth to ninth short and dilated ; in colour, the first to fifth are flavous, the sixth to eighth black, the ninth to eleventh flavous. Legs flavous throughout, and slightly pubescent ; the base of the posterior femora black. This species may be separated from those of its congeners, to which it nearly approaches, by its larger size, and by the constriction of the sides at the base of the thorax. 222 OMOTOTUS. Apparently a common insect in the Amazon district; from the neighbourhood of Ega, Santarem, Villa Nova and Para, and the Delta of the Amazon. In the collections of Messrs. Baly, Bates, and the Rev. H. Clark. 14. Omototus sexmaculatus. (Tab. IX. fig. 1.) 0. ovatus, robustus, pubescens, flavo-fuscus ; capite punctato ; tJwrace transverso, lateribus paraUelis {hand ad basin coarctatis) ; elytris punctatis, striatis, valde pubescentibus, maculis sex circu- laribus ornatis {maculis ad scutellum et ad apicem fuscis, ad medium nigris) ; antennis art. 6-8 valde dilatatis, nigris, reli- quis fuscis. Long. corp. 2|-3 lin., lat. If lin. Ovate, broad, subcylindrical, robust, pubescent, flavo-fiiscous. Head short, slightly produced ; above the labram is a transverse tri- angular depression ; the surface is thickly and coarsely punctate and impubescent (except at the inner margin of the eyes). Thorax transverse; the anterior angles subacute and depressed; the sides marginate and parallel ; the surface is subcylindrical, more distinctly pubescent at the sides, finely punctate. Scutellum triangular, finely pubescent, impunctate, fuscous. Elytra robust, subparallel, punctate- striate (the striation being almost concealed by the pubescence) ; be- tween the second and fourth striae are placed on each elytron three circular spots, which are formed by a darker colour of the pubes- cence ; those near the scutellum and also that near the apex are in colour fuscous, the central spots being more distinct and black. Antennae short, robust, dilated towards the apex ; the joints third to fifth elongated and slender, sixth to eighth abruptly dilated; in colour, the first to fifth are flavous, sixth to eighth black (the base of the sixth being fuscous), ninth to eleventh flavous. Legs flavous throughout. This species differs from 0. bimaculatus in the form of its thorax (the sides of which are parallel, and not constricted at the base), as well as in the six spots on the elytra. From Ega (River Amazon). 15. Omototus binotatus. O. oblongo-ovatus, robustus, jlavo-pubescens, fusco-flavus ; capite elongato, antennis approximatis, inter oculos transverse foveolato ; thorace quadrato, penitus subelongato, ad basin depresso et con- stricto ; elytris punctato-striatis, maculis duabus, rotundatis, nigris, ad medium inter 2n(lam et 5'"m strias ; antennis robmtis, 0M0T0TUS. 223 art. 1-5 jlavo-testaceis, 6-9 dUatatis, nigris, 10 et 11 rufo- testaceis. Long. corp. 21 lin., lat. 1 lin. Oblong-ovate, robust, flavo-pubesccnt, fusco-flavous. Head elon- gate, somewhat produced in front ; above the base of the antenna; (which are approximate), and between the eyes, is a transverse de- pression, which is partially concealed by the flavous pubescence at the inner margin of the eyes ; surface punctate and rufo-flavous. Thorax quadrate (slightly elongated) ; the anterior angles slightly prominent and subacute (extending laterally considerably beyond the base of the head), much depressed ; the sides are marginate, sensibly constricted at the base ; a slight antemedial elevation gives to the base an apparent transverse depression. Scutellum triangular, pu- bescent, fusco-flavous. Elytra broader than the thorax, robust, sub- parallel, broadly but indistinctly punctate-striate (the striation being almost concealed by the pubescence) ; two circular black spots are situated medially between the second and fifth strias and near the scutellum ; the surface is slightly suffused with fuscous. Antennae long, robust ; the third to the fifth joints long and slender, sixth to ninth dilated; first to fifth flavo-testaceous, sixth to ninth black, tenth and eleventh rufo-testaceous. Legs tolerably robust. 0. binotatus differs from all the species (known to me) to which it seems nearly allied, by the elongated (instead of transverse) form of its tliorace. From the neighbourhood of Bahia. A single example is in the collection of the Rev. H. Clark. 16. Omototus humero-notatus. 0. oblongo-ovatus, testaceo-pidiescens, flavus ; capite inter oculos obsolete foveolato ; thorace transverso,ad latera rect'dineari ; ely- tris latis, robustis, punctato-striatis, testaceo-pubescentibus, ad scutellum duos maculos circulares apparent, fuseo suffusce ; an- tennis sat robustis, ad apicem subdilatatis, art. 1-5 flavis, 6—11 fuscis ; pedibus jlavis, posticis subelongatis. Long. corp. 2 lin., lat. 1 lin. Oblong-ovate, testaceo-pubescent, flavous. Head short, trans- verse, hardly elongated ; above the labrum is a transverse triangular depression, and above the base of the antennae between the eyes is an obsolete fovea in the form of the letter Y : the eyes are large, situated at the base of the head, and extending laterally as far as the anterior angles of the thorax. Thorax transverse, rectangular ; 224 0M0T0TUS. the anterior angles depressed ; the sides submarginate and recti- linear ; at the base is a broad transverse depression. Scutellum almost obsolete. Elytra broad, robust, punctate-striate, the punc- tures being broad and shallow, but for the most part concealed by a fine and thick testaceous pubescence, which is especially apparent along the line of the suture: two circular suffused fuscous spots occirpy the space close to the scutellum, between the second and fifth striae. Antennae, tolerably long and robust ; the first and second joints dilated (the first being, as in the other neighbouring species, slightly reflected outwards, and the second short, ovate) ; the third to fifth joints attenuated and elongated ; the sixth to eleventh joints shorter and slightly broader; the colour of the first to fifth being flavous, sixth to eleventh fuscous. Legs: the posterior pair sub- elongated ; flavous throughout. From St. Paul, Brazil. In the collection of M. Deyrolle. 17. Omototus sexnotatus. (Tab. IX. fig. 2.) 0. oblongo-ovatus, parallelus, ferruginous, Jlavo-pubescens ; capite leviter producto, inter oculos in forma litterce T foveolato ; thorace transverso ; elytris punctato-striatis, nigro-maculatis (macula; duo; apad humeros, altera; media', alterceque ad basin disponun- tur) ; antennis Jiliformibus, subincrasscttis, ferrugineis, articulis 7"!0-ll'"° nigris ; pedibus fiavis. Long. corp. If lin., lat. f lin. Oblong-ovate, parallel, ferrugineous, clothed throughout with a fine yellow pile. Head short, hardly produced, with an obscure transverse carination betweon the eyes, which joins at its centre a longitudinal ridge extending to the base of the antennas (forming together the character of the letter T) ; the surface at the base of the head is levigate and finely punctate. Thorax transverse, marginate, at its anterior angles depressed ; the antemedial surface is rounded ; the base is transversely depressed. Elytra broad, robust, cylindrical, short, punctate-striate, very finely pubescent, with six irregular black spots, two at the scutellary angle (approaching, but not touching, the suture), two (which are oblong in form and obscure) postmedial, and two subapical and sutural. Antenna; somewhat robust, with a ten- dency to dilatation towards the apex ; the five apical joints black, the rest ferrugineous. Legs flavous. The size and arrangement of the six spots on the elytra (besides its parallel subcylindrical and short form) are quite sufficient to sepa- rate this species. Brazil. In the cabinet of Mr. Baly. OMOTOTTTS. 22') 18. Omototus senceo-pubescens. I3.M. O. oblongo-ovatus, sericeo-pubescens, jlavo-fuscus ; capite ad basin antennarum longitudinaliter foveolato ; ihorace ad medium transverse depresso ; elytris parallelis, punctato-striatis, ante medium, post medium (ad marginem), et ad apicem irregulariter et obsolete depressis ; antennis robustis, ad apicem subincras- satis, art. 1-6 flavis, 7 et 8 nigris, 9-11 flavis ; pedibus flavo- testaceis. Long. corp. 2i lin., lat. 1 lin. Oblong-ovate, flavo-fuscous, covered throughout with a fine silky tlavous pubescence. Head short, slightly produced ; above the la- brum is a transverse carination ; immediately above the base of the antennas is a short longitudinal fovea, while on either side of this, near to the inner margin of the eyes, is a broader and more distinct subcircular depression ; eyes tolerably large, situated at the base of the head, extending laterally nearly as far as the anterior thoracic angles. Thorax transverse (almost quadrate), rectilinear ; near its anterior margin is a central fovea, while at the sides (nearer to the base) are two other transverse medial depressions. Scutellum trian- gular, subpubescent. Elytra parallel, punctate-striate, with several broad distinct depressions ; one, antemedially, near to the suture (which extends upwards and obliquely towards the shoulders), an- other, postmedial (near to the margin), and another near to the suture at the apex. Antennce tolerably long and robust, slightly incrassated towards the apex ; the first to sixth joints flavous, seventh and eighth black, ninth to eleventh flavous. Legs flavo-testaceous, the posterior tibise and inflation of the terminal claw being rufo- flavous. Columbia. A single example is in the collection of the British Museum. 19. Omototus transverso-notatus. O. oblongo-ovatus, subpubescens,flavo-ferrugineus ; capite subpunc- tato ; iliorace quadrato, rectangulari, later ibus subsinuatis, ad apicem bituberculato, ad basin depresso ; elytris latis, valde punc- tato-striatis, transverse et irregulariter costatis, oblicpie quoque fusco lineatis ; antennis robustis, ad apicem incrassatis, art. 1—5 et 9-11 flavis, 6-8 piceis ; pedibus flavis. Long. corp. 1^ lin., lat. f lin. Oblong-ovate, sufficiently robust, sparingly pubescent, flavo- ferrugineous. Head short, abruptly deflected, slightly produced in 220 METRIOTES. front : eyes situated at the base of the head, extending laterally not so far as the anterior angles of the thorax; between the eyes and above the base of the antennas is an obsolete oblique fovea in the shape of the letter Y : the surface is finely punctate, and at the inner margin of the eyes subpubescent. Thorax quadrate (slightly elongate) and rectangular ; the sides are marginate and towards the base subsinuate ; near the anterior margin are two oblong tubercles, distinctly and broadly prominent ; the base is transversely depressed ; the surface is punctate and subpubescent. Scutellum small, trian- gular. Elytra broad, deeply and coarsely punctate-striate, with several irregular ridges and depressions ; abroad and deep, obliquely transverse depression (from the shoulders to the middle of the suture) is the most conspicuous ; below this is another, transversely oblique, situated postmedially : the surface is fiavo-pubescent ; two irregular and suffused fuscous lines extend obliquely from the suture (slightly in the direction of the apex) to the margination. Antennas robust, incrassated ; the joints first to fifth flavous, sixth to eighth piccous, ninth to eleventh rufo-flavous. Legs flavous, the anterior tarsi and base of the tibiae being piceous, the posterior tibiae rufous, and the base of the posterior femora suffused with fuscous. Tunantius, in the district of the River Amazon. Genus 36. METRIOTES*. Palpi maxillaees sat robust! ; art, 2ndo latiori quam penultimo, in- crassato ; penultlmo brevi, quadrato. Palpi labiales : art. 2"40 et 3ti0 elongatulis, 2nd" robustiori. Antennae attenuates, filiformes. Caput antice productum, depressum. Thorax transversus, rectangular is, ad basin transverse lineato-foveo- latus. Elytra elongata, subparallela, depressa. Pedes anteriores attenuati : tibiis posticis elongatis, a retro visis lon- gitudinaliter excavatis ; marginatione undique quinque aut sex calcaribus armata ; unguicula ultima bifida, simplici, haud dentata. Labrum subcircular, narrow. Maxillary palpi (Tab. III. fig. 8 m) sufficiently short, robust, di- stinguished in form from those of other genera by having the second joint more broadly incrassated than the penultimate ; the basal joint * fierpiortfs, modestia. METRIOTES. 227 is minute, elongate, dilated towards the apex ; the second is trans- verse, obliquely truncate at its base, its breadth being equal to nearly twice its length, and more than twice the breadth of the basal joint ; the third is transverse, almost quadrate, cylindrical, about two -thirds the breadth of the second joint, and situated apparently (not, as in other genera, medially, but) towards the side of its apex ; the terminal joint is short and acuminate, in breadth it is distinctly narrower than the third joint. Labial palpi (Tab. III. fig. 8 n) somewhat smaller than the maxil- lary palpi ; the second joint is elongate, and attenuate towards the base ; the apical joint is almost as long as the second, more attenu- ate, and acuminate. Antenna? situated on the line of the lower margin of the eyes, attenuate and filiform ; the third and fourth joints are subequal, and nearly equal in length to the basal joint. Eyes lateral, situated at the base of the head, large, in form suffi- ciently globose and suboval. Head distinctly produced in front, in this character approaching closely to the form of the genus Rhinotmetus ; above the labrum is an evident, but not abrupt or angulated, transverse depression ; the anterior portion of the head is considerably depressed. Thorax broader than the head, transverse, rectangular ; the surface is equate; near the basal line is a transverse depression, not broad and shallow as in most other genera, but distinct and narrow, resembling somewhat the thoracic fovea in the genus Mono- platas. Sciitellum triangular, subelongate, situated in the plane of the elytra. Elytra slightly broader than the thorax, elongate, subparallel, and depressed ; the humeral and scutellary angles are very slightly raised. Legs : the anterior femora and tibice subattenuate, the latter being straight, and hardly dilated towards the apex. The tarsi are short ; the third joint is broader than the rest and slightly bilobed. The posterior femora (when seen transversely) are incrassated ; in form ovate, attenuate towards the apex. The tibice are elongate, inflected at their immediate base, straight, and slightly thickened towards the apex ; when viewed from behind, the posterior surface is longitudi- nally grooved ; the margination of this groove is armed (from the middle to the apex) on either side with a row of five or six short and sharp spurs, thus closely resembling the tibia of the genus Monopla- tus ; the extreme apex of the tibiae is terminated (as in other genera) below the insertion of the tarsus by two incurved claws. The tarsus q2 228 METRIOTES. is attenuate, and somewhat more elongate than in the adjoining groups ; the first and second joints are long and narrow ; the third is very short ; the apical claw, which is completely concealed from above by the globular inflation of the last joint, is bifid, and unarmed at its inner surface by any basal tooth. The form of this genus is very interesting, inasmuch as it presents several special peculiarities. In general facies it differs from all the species composing the genus Hypolampsis by its depressed form and subelongate posterior femora ; and a careful microscopic examination shows still more interesting points of divergence, in its dilated ante- penultimate joint of the maxillary palpi, and the series of spurs which arm the marginatum of the posterior tibiae. 1. Metriotes Robinsonii. (Tab. III. fig. 8.) M. ovata, paraUela, depressa, impubescens, punctato-striata, glabra, jlava; capite transverso, antiee producto, ad basin punctulato; thorace transverso, ad basin transverse foveolato ; elytris elonga- tulis, punctato-striatis ; antennis filiformibus. Long. corp. If lin., lat. \ lin. Ovate, parallel, depressed, impubescent, punctate -striate, glabrous ; of a flavous colour throughout. Head transverse, depressed, and pro- duced iu front ; below the base of the antenna? is a slight transverse depression ; the surface is levigate, at the base punctate. Thorax broader than the head, transverse, anteriorly very slightly emarginate; the anterior angles are depressed and quite distinct ; the sides are marginate and obsoletely sinuate ; parallel to, and closely adjoining, the basal line is a transverse thread-like fovea, which (exactly corre- sponding in form to that in the genus Monoplatus) is not produced to the lateral margins, but is deflected to the line of the base ; the surface is finely punctate. Elytra somewhat broader than the thorax, parallel, and depressed ; the surface is punctate-striate, the punctures being distinct and the strioo almost obsolete ; the scutellary angles are slightly raised. Antemue attenuate and fili- form. Legs attenuate, the postical femora and tibiae being some- what elongate. I name this species after Mr. E. H. Robinson, to whom I am indebted for the care and diligence which he has shown as an artist and engraver in the preparation of the plates of this volume. The single example upon which this genus is based (which is flavous throughout, and impubescent) was sent home by the late Mr. Squire from the neighbourhood of Rio Janeiro. P0EBATES. 229 Genus 37. POEBATES*. Palpi maxillares robusti, art. pemdtimo quadrato, cylindrico. Palpi labiales elowjati, minuti. Antenna filiformes, hand robustce. Caput breve, pome verticale, antice subproductum. Thorax transversus, cequatus. Elytra lata, robusta, subcylindrica, punctato-striata. Pedes sat robusti ; femoribus posticis brevibus, vcdde incrassatis ; tibiis brevibus, inarmatis. Labrum subcircular. Mamillary pcdpi (Front, fig. 7 m) : the basal joint minute ; the secoild abbreviated, and in form almost triangular ; the third longer and considerably broader than the second; the fourth conical, in breadth equal to the apex of the third. Labial palpi (Front, fig. 7 n) attenuate, elongate ; the penultimate joint subcylindrical. Antennae approximate, situated below the inner margin of the eyes ; short, filiform, the third, fourth and fifth joints being slightly more attenuate than the rest. Eyes lateral, situated at the base of the head, globose. Head short, depressed, almost vertical, somewhat produced in front ; above the base of the antennas transversely depressed. Thorax broader than the head, transverse, rectangular, the basal angles being in some examples obsoletely obliquely truncate ; the surface is equate, and in P. nigripes subpubescent. Elytra broad, much more robust than the thorax, short, subcylin- drical, not antemedially transversely depressed, punctate-striate. Legs : the anterior femora sufficiently robust, and slightly incurved. The tibiae are slightly thickened towards the apex. Tbe tarsus is short, the basal joint being somewhat dilated ; the second joint is of the same form as the first, but considerably smaller ; the third broader, subcircular, and distinctly bilobed : the apical claw is armed on either side at its under surface near the base with a short and robust inner tooth. The posterior femora are short and much in- crassated. The tibia} are short, slightly thickened towards the apex : when viewed from behind, a longitudinal groove is apparent, which forms a socket for the insertion of the tarsus ; this socket is simple and unarmed. The tarsi are short and attenuated. The species forming this genus separates itself at once from the * noh), herba ; /3atvw, incedo. 230 HYPOLAMPSIS. species of other adjoining genera by its short filiform antennae, its robust, equate, and parallel elytra, and by its short posterior femora and tibiae. Its facies (although generally similar to) is manifestly different from that of Omototus, from which it may be also at once distinguished by its filiform antennae ; from Hypolampsis it differs by the absence of any transverse depression on the elytra and by the form of its posterior tibiae ; from both groups it is distinguishable also by the form of its maxillary palpi. 1. Poebates nigripes. (Front, fig. 7.) B.M. P. ovata, robusta, fiavo-ferruginea, pubescens ; capite antice (super basin antennarum) oblique foveolato ; thorace transverso, a/pud angulos postieos subdepresso ; elytris punetato-striatis ; antennis nigris ; pedibus nigris, tarsis posticis piceo suffusis. Long. corp. 1| lin., lat. f lin. Ovate, robust, flavo-ferrugineous, pubescent. Head short, hardly elongated in front, punctate ; between the eyes (above the base of the antenna;) is a Y-shaped depression. Thorax transverse ; the anterior angles depressed, slightly compressed and rounded; two broad post- medial depressions are apparent near the humeral angles. Scutellum small, almost obsolete. Elytra robust, subparallel, punctate-striate. Antennas filiform, with a slight tendency to dilatation towards the apex ; the first joint is broad, dilated at the apex, and inflected out- wards ; the second short and ovate ; the third, fourth and fifth of nearly equal length, but not so long as the first. Legs black, the posterior tarsi being suffused with piceous ; the posterior apical in- flated joint bright black ; the anterior claws rufo-ferrugineous. Apparently a common species in the Island of St. Paul's ; found also in the neighbourhood of Rio Janeiro, and taken by my friend Mr. Gray and myself at Constancia during our visit to the Organ Mountains. In the collection of the British Museum ; also in those of Messrs. Paly, Gray, Miers, "Waterhouse, and the Rev. H. Clark. Genus 38. HYPOLAMPSIS*. Palpi maxillares elongati, art. penultimo robusto, quadrato, art. api- cali conico. Palpi labiales elongatuli, siibcylindriei. Antennae robustce, autfiliforw.es ant dilatatce. ;- i'no, sub ; \a/ii|/(?, fulgor. IIYPOLABIPSIS. 231 CArur breve, semper verticale aut penitus verticale, et antice obsolete productum, granulatum aut punctatum. TnoRAX aut quadratus aut transversus. Elytra lata ; aliquando subglobosa, aliquando parallela ; pimctato- striata, plerumque ante medium oblique depressa. Pedes robust i ; tibiis posticis inarmatis, simplicibus. Labrum subcircular, in some species medially sinuate. Maxillary palpi (Tab. IX. fig. 3 m) incrassated ; the first and second joints more or less attenuated ; the third joint robust and transverse, the breadth being considerably greater than the length ; sometimes in form globular. Labial palpi (Tab. IX. fig. 3 n) elongate, cylindrical ; the apical joint attenuate. Antenna? approximate, situated below (or parallel with the inner margins of) the eyes ; in some species of the group (as in H. Lacor- dairii) filiform and robust, in others (as in H, albo-guttata) sub- dilated or distinctly incrassated. Eyes situated close to the base of the head, for the most part di- stinctly globular; their form is circular, or (in some few species, like H. elegantula and H. nana) with a distinct tendency to an oval form. Head : at the base short and transverse ; in all the species of the group vertical, the apex being for the most part more or less pro- duced or subattenuate : in all the species there is, above the labrum, a transverse triangidar plane ; this plane is occasionally bounded by oblique carinations : the surface between the insertion of the antennae and the base of the head is punctate, or more frequently granidated. Thorax always somewhat broader than the head, and distinctly narrower than the elytra ; in form it is either subelongate (as in H. elegantula), or in most species quadrate (as in H. Balii) ; it is occasionally, however, distinctly though not broadly transverse (as in H. albo-guttata) ; the form is always rectangular, the angles being always distinct or subacute ; the sides are always marginate, frequently subconstricted (in some species, as in H. elegantula, di- stinctly constricted) at the base ; occasionally the margin is in out- line slightly sinuate ; the surface is equate, generally flattened and depressed, rarely elevated or gibbous ; at the base, for the most part, transversely depressed ; more or less punctate, or granidated, and subpubescent. Scutellum triangular, situated on (very rarely below) the plane of the elytra. Elytra in all the species considerably broader than the thorax, 232 HYPOLAMPSIS. sufficiently robust, elongate, parallel and subcylindrical or (in a few species, as in H. aestivalis and H. poreulus) very broad, short and globose : the surface is for the most part antemedially transversely depressed, giving a prominence, more or less distinct, to the humeral or scutellary angles; in all the species punctate-striate, and pubescent or subpubescent : the colour in the different species has a degree of uniformity ; it is always fuscous or flavo-fuscous ; occasionally nigro- fuscous ; never brightly coloured or variegated by distinct markings. Legs robust ; in general form a greater similarity is apparent than is the case with other parts of the body. The anterior femora, when viewed from in front, are cylindrical, generally attenuated towards the base, and sometimes towards the apex, where they are for the most part abruptly truncate. The tibice are (more or less distinctly) in- curved at their immediate base, straight, slightly thickened towards the apex, and in some species distinctly flattened longitudinally when viewed from behind ; that is, of a triangular rather than of a cylindrical form. The tarsi are in all the species short, frequently scarcely two-thirds the length of the tibia? ; the first and second joints are subequal, and in form triangular (the second being a trifle shorter and perhaps broader than the first) ; the third is much broader than the basal joints, transverse, and more or less distinctly bilobed ; from the base of the third proceeds the terminal joint, which is, as usual, attenuated and subincurved ; the terminal claw is bifid, and robust at the base : for the most part, certainly, the claw is simple and un- armed; in one or two species, however, there may be traced the rudiments of an inner basal tooth. Posterior femora broadly in- crassated, and more evidently elongate than in the preceding genus, Poebates. The tibice are short, incurved at their immediate base, straight, and dilated at the apex; the surface is longitudinally fiattened (and also medially subcompressed when viewed directly from behind) ; this flattened surface is in some species slightly grooved, and terminates in a socket for the reception of the tarsus, which ap- pears to be more sliattoiv and less excavated than in other genera ; in H. elegantula this socket is fringed with a few short and straight comb-like teeth. The tarsus is short and attenuate, the apical claw being quite concealed by the inflation of the last joint. A very difficult group : it is composed entirely of minute species. After many weeks of careful microscopic investigation, I have ventured to bring all the species together under a single genus. It will have been obvious, from the preceding generic diagnosis, tbat there is very much dissimilarity in general form among the species included; nevertheless there are between these several divergent forms so many connecting links and intermediates, that I am quite UYl'OLAMl'SJS. 233 unable to satisfy my own mind as to the exact limits of any subdivision that would suggest itself. In general facies there is a marked re- semblance: the insects composing the group are never brightly coloured, never variegated by distinct markings ; they arc in colour fuscous, and for the most part pubescent. In the form of the posterior tibia also (which in this section of the Galerucidae supplies such valuable generic characters), the different species present little, if any, dissimilarity : the tibia is longitudinally grooved (less apparently so than in other genera) ; the margination of this groove is simple, and unarmed by any even obsolete spur. Subdivision A. Elytris parallelis, p/i« m inus robtistis, plerumque ante ■medium oblique depressis. 1. Hypolampsis melanotus. H. oblongo-ovata, parallela, subdepressa, nigra ; capite brevi, rufo ; thorace transversa, ad basin bidepresso, punctato, rufo ; elytris latis, parallelis, punctato -striatis, squamosis, ante medium oblique subdepressis, nigris, ad marginem undique rujis ; aniennis dila- tatis, fulvis, ad basin piceis ; pedibus rujis. Long. corp. If lin., lat. \ lin. Oblong-ovate, parallel, subdepressed, black. Head short, trans- verse, not produced ; eyes tolerably large, situated at the base of the head ; the surface (when viewed under a high power) very finely punctate, of a dark rufous colour. Thorax transverse, rectilinear, rectangular ; the anterior angles subdepressed ; the sides obsoletely marginate ; at the base (when viewed from in front) is a transverse obsolete depression, which does not extend to the posterior angles ; the surface thickly and irregularly punctate (the punctures themselves being of uneven form, some circular, and some vermiculate), of a rufous colour throughout. Svutellum triangular, rufous. Elytra broader than the thorax, parallel, punctate -striate, the punctures being almost concealed by a thick and close squamose pile : a little before the middle is a broad, obliquely transverse depression, extend- ing towards the shoulders and giving an appearance of prominence to the scuteilary angles ; the colour black, with margins (along the shoulders, the margination, and at the base) of a dark-red colour. Antenna; fine, dilated towards the apex ; the joints one to six being elongate, narrower, and of a fulvous colour; the joints seven to eleven being shorter, distinctly dilated, and fuscous. Legs rufous throughout. This handsome species is at once to be separated from its congeners by the colour of its elytra, which is pitchy-black, margined with 234 HYPOLAMPSIS. rufo-flavous. It is a question whether it ought not to be separated generically : the elytra are more evenly parallel, and also somewhat more elongated ; the posterior tibia? also are shorter than is the case with most of the other species of the group. Chili. In the collection of M. Chevrolat. 2. Hypolampsis Balii. H. oblongo-ovata, sat robusta, punctato-striata, ferruginea ; capite brevl, haud producto, punctato ; thorace quadrato, ad basin con- stricto, punctato, subpubescenti, piceo ; elytris latis, oblique ante medium depressis, punctato-striatis, obsolete jiavo-pubescentibus ; antennis robustis,jiliformibus,ferrugineis, art. 7-11 fusco-piceis ; pedibus flavis. Long. corp. 2 lin., lat. 1 lin. Oblong-ovate, sufficiently robust, deeply punctate-striate, obsoletely pubescent, ferrugineous. Head short, transverse, almost vertical, not produced in front ; above the labrum is a transverse plane depression, which is bisected by a medial longitudinal carination (sometimes almost obsolete) : the eyes are prominent and lateral ; between the eyes the surface is deeply punctate. Thorax quadrate, constricted and transversely depressed at the base ; the anterior angles are sub- acute and much depressed ; the sides finely marginate ; the surface is thickly punctate and finely pubescent (more distinctly at the base and sides) ; in colour piceous. Scutellum minute. Elytra broad, robust, subdepressed ; an antemedial depression extends obliquely upwards towards the humeral angles, giving an appearance of pro- minence to the surface near the scutellum ; deeply punctate-striate, clothed throughout (but more apparently at the apex) with obsolete flavous pubescence. Antennae robust, filiform, with a tendency to dilatation towards the apex ; the colour is ferrugineous, the joints seven to eleven being fusco-piceous. Legs flavous throughout, the posterior femora being suffused with ferrugineous. H. Balii is distinguishable from all its congeners with which I am acquainted by its greater size ; its deeply striated elytra, combined with its constricted thorax, also readily distinguish it. Brazil. In the cabinets of Messrs. Baly, Deyrolle, and the Rev. H. Clark. 3. Hypolampsis elegantula. H. oblonga, ovata, robusta, subcylindrica, subpubescens, grisea ; capite brevi, antice hand producto, punctato ; thorace quadrato, ad basin constrict o et transverse depresso, Jlavo-pubescenti ; elytris sat latis, punctato-striatis, subtiliter oblique ante medium depressis; HYPOLAMPSIS. 235 antennis robustis,jiliformibus, nifo-Jfavis, ad basin piceo suffusis ; pedibus rufo-flavis. Long. corp. 1^ lin., lat. f lin. Oblong, ovate, robust, subcylindrical, finely pubescent, of a griscous colour. Head short, not produced in front ; eyes large, lateral, situated at tho base of the head ; between the eyes is a longitudinal medial fovea ; the surface is finely punctate, and near the margin of the eyes subpubescent. Thorax quadrate, constricted at the base ; the anterior angles are much depressed ; the sides are marginate ; at the base is a broad transverse depression, which is produced on either side obliquely to the humeral angles; the surface is finely flavo- piibescent. Scutellum triangular and minute. Elytra somewhat broader than the thorax, punctate-striate, the punctures being nearly concealed by a fine clothing of pale griseous pubescence ; in some examples, where this pubescence is less apparent, a slight ante- medial transverse depression extends obliquely upwards towards the shoulders ; near the scutellary angles are two suffused circular mark- ings of piceous ; two others somewhat larger, but equally suffused, are postmedial. Antennae robust, filiform, the third joint being attenuated, and in colour rufo-flavous ; the two basal joints are suffused with piceous. Legs rufo-flavous, the posterior femora and tibia? being fusco-rufous. This species may be recognized from H. Balii by its more distinct pubescence, and by the four suffused markings on the surface of its elytra ; it differs from all its congeners by its greater size. Taken by the late Mr. Squire in the neighbourhood of Eio Janeiro. In the collection of Mr. Baly. 4. Hypolampsis multicostata. H. oblongo-ovata, subelongata, subcylindrica, impubescens, nigra ; capite brevi, inter oculos transverse depresso, granulate ; thorace transverso, ad angidos basales depresso, subtiliter Jlavo-pubescenti ', granulato ; elytris subparattelis,punctato-striatis, ad apicem sub- tiliter jiavo-pubeseentibus ; antennis tenidbus, ad apicem incras- satis, art. 1-6 jiavis, 7-11 fuscis ; pedibus flavis, femoribus posticis fuscis. Long. corp. 1| lin., lat. 1 lin. Oblong-ovate, subelongate, subcylindrical, impubescent, fuscous- black. Head short, transverse, subelongated ; between the base of the antenna? and the labrum is a depressed plane, which is bounded on its upper surface by two oblique carinations ; from the base of the 236 HYPOLAMPSIS. antennae extends a medial longitudinal minute fovea, which is ter- minated at its upper extremity by a broader and more obsolete trans- verse depression : eyes tolerably large, not extending laterally as far as the anterior angles of the thorax ; the surface throughout is gra- nulated, impubescent, and fuscous-black. Thorax transverse (almost quadrate), rectangular ; the anterior angles depressed ; the sides sub- marginate ; at the base is a transverse obsolete depression, which is most apparent near the basal angles ; the surface (when viewed under a high power) is very finely flavo-pubescent, and finely granu- lated throughout. Scutellum small, triangular, impunctate. Elytra somewhat broader than the thorax, subparallel, robust, deeply punc- tate-striate ; a transverse antemedial depression extends obliquely upwards towards the humeral angles, giving an appearance of pro- minence to the surface near the scutellum ; at the apex a fine flavour pubescence may be discerned with a high magnifying power. An- tennce fine, slightly incrassated at the apex, the joints one to six being flavous, seven to eleven (which are shorter and subdilated) fuscous. Leys flavous ; the posterior femora being fuscous, and the globular inflation of the posterior claw rufo-fuscous. Brazil. In the collection of M. Chevrolat. 5. Hypolanipsis insequalis. H. oblongo-ovata, subrobusta, subparallela, picea ; capitead apicem transverse carinato ; ihorace transverso, rectangular!, ad apicem < t ad basin transverse depresso, ferrugineo-pubescenti ; clytris punctato-striatis, ante medium transverse depressis, ad basin et ad latera ferrugineo-pubescentibus ; antennis filiformibus, Jlavis, art. 7 et 8 ferrugineis ; pedibus flavis, femoribus posticis pieeis. Long. corp. 1^ lin., lat. | lin. Oblong-ovate, tolerably robust, subparallel, of a piceous colour throughout. Head short, slightly elongated ; immediately above the labrum is a transverse ridge, the ends of which are connected with the base of the antennae by two other obliquely transverse carinations; eyes somewhat prominent, situated at the base of the head ; the sur- face is finely punctate, subpubescent. Thorax transverse, rectangular, rectilinear ; the sides submarginate ; two distinct depressions extend transversely, one antemedially, and the other (which is broader) post- medially ; the surface is clothed with a fine ferrugineous pubescence. Scutellum small and triangular. Elytra broadly punctate-striate, antemedially and transversely depressed ; at the base and (sparingly) at the sides clothed with a ferrugineous pubescence. Antenna? fili- form, attenuate ; of a flavous colour, the seventh and eighth joints iiypolami'sis. 2.')7 being ferrugineous. Legs flavous ; the postical short ; the femora being piceous, and the globular inflation of the posterior claw bright rufous. This species is evidently abundant in the neighbourhood of Bio Janeiro, where it has been taken by Mr. Fry, as well as by Mr. Gray and myself. It is tolerably constant in colour and markings, and may be separated from most of its congeners by the irregular trans- verse markings on the elytra. 6. Hypolampsis Miersii. H. oblongo-ovalis, subcylindrica, punctato-striata, subtiliter pubes- cens,])'uu;a ; capite brevi, vix producto, sparsim Jiavo-pubescenti ; thorace transverso, ad basin constricto, punctulato, subpubescenti : elytris robustis, ante medium transverse depressis, punctato- striatis ; antennis ad apicem dilatatis, art. 1-5 jlavis, 6-8piceis, 9-11 testaceis ; pedibus Jlavis, femoribus posticis ad apicem piceo saffusis. Long. corp. 1^ lin., lat. | lin. Oblong-ovate, sufficiently robust, subcylindrical, punctate-striate, finely pubescent, piceous. Head short, abruptly deflected at right angles to the elytra, hardly produced in front ; below the base of the antennae is a transverse triangular and depressed plane: eyes tolerably large, extending laterally as far as the anterior angles of the thorax ; between the eyes is an obsolete medial carination ; the surface is finely flavo-pubescent. Thorax transverse (almost qua- drate), at the base distinctly constricted and transversely depressed ; the sides faintly marginate ; the surface is finely punctate and obso- letely pubescent. ScuteUum triangular, impunctate. Elytra broader than the thorax, robust, antemedially transversely depressed ; the scutellary angles are somewhat gibbous; punctate-striate (the punc- tures being shallow and the striae broad and deep) ; the surface is irregularly clothed with obsolete pale pubescence. Antcnnce attenu- ated, subdilated towards the apex ; joints one to five flavous, six to eight piceous, nine to eleven testaceous. Legs flavous, the apex of the posterior femora being suffused with piceous. This species differs from H. incequalis in its concolorous elytra ; it is more robust than H. Dohrnii, the markings of the antennae are different, and the striae on the elytra are deeper ; it closely resembles in form H. Murraii, but is distinguishable from that species by its differently coloured and pubescent elytra ; from all other allied species it may be separated either by the character of the markings on the antennae, or by its greater size. Surinam ; Paramaribo. In the collection of M. Dohrn. 238 HYPOLAMPSIS. 7. Hypolampsis Dohrnii. H. oblongo-ovata, subrobusta, obsolete pvbescens, fusea ; capite vix producto, punctato ; thorace transverso, ad basin constricto et transverse depresso, punctato ; elytris robustis, punetato-striatis, ante medium transverse depresses, fuscis, ad apicem et ad humeros rufo suffusis ; antennis subdilatatis, art. 1—6 Jiavis, 7 et 8 fuscis, 9-11 testaceis ; pedibus Jiavis, femoribus posticis fuscis. Long. corp. 1^ lin., lat. | lin. Oblong-ovate, subrobust and snbparallel, obsoletely pubescent, fuscous. Head short, transverse, almost vertical, slightly produced in front ; between the basal joints of the antennas is an obsolete longitudinal carination ; the surface is finely punctate and pubescent ; eyes tolerably large, situated nearly at the base of the head. Tliorax transverse (almost quadrate), constricted towards the base ; the sides finely marginate ; the base not so distinctly depressed as in the preceding species ; the surface is thickly punctate and impubescent. Scutellum large, triangular. Elytra broader than the thorax, sub- cylindrical, punctate-striate, antemedially transversely depressed ; the surface is very obsoletely pubescent, fuscous, suffused with paler rufous colour at the apex and near the humeral angles ; this rufous colouring is more or less distinct in different examples. Antennas slightly dilated towards the apex ; joints one to six flavous (the first and sixth joints being in some specimens suffused with fuscous), seven and eight fuscous, nine to eleven testaceous. Legs flavous, the pos- terior femora being fuscous. This species, closely allied to H. Miersii, may be separated from it by its less deep punctuation on the elytra. Brazil and the Island of St. Paul's. 8. Hypolampsis albo-guttata. (Tab. IX. fig. 3.) H. ovata, lata, ferrugineo-picea ; capite subproducto, ad apicem transverse carinato, inter oculos longitudinaliter foveolato ; thorace transverso, ad medium subdilatato, subtiliter pubescenti ; elytris latis, punetato-striatis, ante medium transverse depressis, maculis albis sparsim notatis ; antennis ad apicem incrassatis, art. 1-6 rufo-fuscis, 7 et 8 pallide testaceis, 9-11 fuscis ; pedibus Jiavis, tarsis anterioribus nigro-fuscatis, femoribus posticis piceis. Long. corp. 1-i- lin., lat. f lin. Ovate, broad, impubescent, ferrugineo-piceous. Head short, trans- verse, subdepressed, elongated in front ; above the labrum is a some- what prominent transverse ridge, separated from the base of the antenna? by a smooth glabrous depression ; immediately above the HYPOLAMPSIS. 239 base of the antennae (which are contiguous) is a short longitudinal fovea, above which (when viewed laterally or obliquely) a slight medial carination extends to the base ; eyes large, somewhat pro- minent, extending laterally as far as the angles of the thorax ; the surface finely punctate, and at the inner margin of the eyes subpubes- cent. Thorax transverse, rectangular ; the anterior angles subacute and depressed ; the sides marginate, the margination being medially subdilated, while immediately behind the anterior, and in front of the posterior angles, it is sensibly constricted : the surface (under a high magnifying power) very finely pubescent; two longitudinal irregular white lines extend on either side from the apex to the base, immediately within the line of margination. Scutellum distinct, tri- angular, very finely pubescent. Elytra broad, subdepressed, coarsely punctate-striate; an antemedial depression extends obliquely upwards towards the humeral angles : several small spots, formed of white pu- bescence (more or less distinct in the example before me), in number about fourteen, are scattered over the surface of the elytra, more frequently towards the apex ; the surface (under a high magnifying power) shows traces of a very fine pubescence. Antennce short, in- crassated towards the apex ; the first joint elongate and broad ; second short, broad, ovate ; third and fourth fine ; fifth to eleventh gradually but distinctly incrassated : in colour, the first to sixth rufo-fuscous (the second and third being more palely rufous), seventh and eighth very pale testaceous, ninth to eleventh fuscous. Legs: anterior flavous, the base of the tibiae and also the tarsi being fuscous ; the posterior fuscous, the tibiae being rufo-flavous. Brazil. In the collection of Mr. Baly. 9. Hypolampsis Murraii. H. oblongo-ovata, robusta, subcylindrica, fortiter punctato-striata , impubescens, nigra ; eapite depresso, vix antice producto, gra- nulato ; thorace transversa, cequato, punctato ; elytris robustis, punctato-striatis, nigris ; antennis robustis, ad apicem subin- crassatis, nigris, art. 10 et 11 testaceis ; pedihus flavis, tarsis et tibiis (ad apicem) anterioribus fuscis, femoribusque posticis ad basin piceis. Long. corp. 1^ lin., lat. f lin. Oblong-ovate, robust, subcylindrical, deeply punctate-striate, iiu- pubescent, pitchy-black. Head transverse, vertically depressed, slightly produced in front ; above the labrum is a transverse triangular plane depression ; above the base of the antennae are two obsolete tubercular elevations ; eyes tolerably prominent, at the base of the 240 HYPOLAMPSIS. head; the surface deeply granulated. Thorax transverse (almost quadrate) ; the anterior angles depressed; the sides parallel and mar - ginate ; the surface equate, and granulated, not so deeply as the head. Scutellum triangidar, impunctate. Elytra robust, parallel, deeply and regularly punctate-striate, impubescent, except obsoletely at the apex. Antenna? robust, subdilated towards the apex, black, the two apical joints being testaceous. Legs flavous ; the anterior tarsi and apex of the tibiae suffused with fuscous, and the base of the posterior femora piceous. This very distinct species may be separated from all others by its uniformly pitchy -black colour, its impubescence, and the arrange- ment of markings on the antennae. H. Murraii occurs not unfrequently in the suburbs of Rio Janeiro, where it was taken by Mr. Gray and myself, and also, in some abundance, by Mr. Fry during his visit to the Brazils in the spring of this year. Mr. Fry remarks respecting this species, " it con- gregates on the tops of some small shrub, ono or two individuals frequently on each leaf ; they are very difficult to secure, as they leap off with great force and activity on being approached." 10. Hypolampsis signaticornis. H. oblongo-ovata, pamllela, suhcylindrica, subtiliter pubescent, nigra ; capite brevi, ad basin granulato ; thorace transverso, ad basin constricto et transverse depresso, punctato ; elytris punc- tato-striatis, ad medium oblique depressis, ad basin flavo-sub- pubescentibus ; antennis incrassatis, ad apicem rufo-fuscis, arti- cidis 3, 4, ei 8-11 testaceis ; pedibus jlavis. Long. corp. 1^ lin., lat. f lin. Oblong-ovate, parallel, subcylindrical, very finely pubescent, black. Head short, transverse, depressed at right angles to the plane of the thorax, produced in front ; mandibles flavous, with the apex fuscous ; above the labrum is a transversely triangular depression ; eyes large, prominent, situated at the base of the head ; the surface at the base (above the antennae) is thickly granulated. Thorax transverse (the length being nearly equal to the breadth), constricted towards the base ; the anterior angles are depressed ; the sides are marginate ; at the base is a broad and shallow transverse depression ; the surface throughout is thickly and coarsely punctate. Scutellum minute. Elytra somewhat broader than the thorax, parallel, coarsely punc- tate-striate throughout, and at the apex clothed sparingly with ob- solete flavous pubescence ; a shallow transverse antemedial depres- sion extends obliquely upwards towards the humeral angles, giving IIVI'OLAMPSIS. 241 an appearance of prominence to the surface near the scutellum. Antenna1, robust, incrassated towards the middle and apex ; the third and fourth joints being of nearly equal length, longer than the others, and attenuated ; the fifth to the eleventh short, and gradually di- lated : in colour, the first and second are rufo-fuscous, the fifth to the seventh fuscous, the third, fourth, and eighth to eleventh testaceous. Legs flavous throughout, the globular inflation of the posterior claw being brightly rufous. Para. In the collection of M. Chevrolat. 11. Hypolampsis nana. H. ovata, lata, rol:>usta,impubescens, picea ; capite brevi,granulato ; thorace transverso (subquadrato), ad basin constricto, antice et ad basin transverse depresso, crehre punetulato ; elytris robustis, valde punctato-striatis, transverse subdep>ressis, ad apicem et ad marginem rufo-ferrugineis ; antennis filiformibus, rufo-ferrugi- neis, art. 7 et 8 rufo-piceis ; pedibus rufo-ferrugineis, femoribus jjostieis s^escentibus et oblique fulvo-notatis ; antennis testaceis ; pedibus Jiavis. Long. corp. 1^ lin., lat. f lin. Ovate, subparallel, tolerably robust ; under a high power of the microscope very finely pubescent ; in colour fiavo-ferrugineous. Head HTPOLAMPSIS. 253 short, transverse ; above the base of the antenna? is an obsolete and short longitudinal fovea; the surface is finely pubescent. Thorax quadrate, rectilinear ; the anterior angles are depressed, the sides marginate ; at the base is a distinct and broad transverse channel ; near the anterior angles are two slight oblique depressions, while a very faint longitudinal impression extends medially from the apex to the base ; the surface is finely fiavo-pubescent. Scutellum triangular, ferrugineous. Elytra broad, tolerably robust, punctate-striate, the stria? being subsinuate ; a medial transverse depression gives an ap- pearance of prominence to the base ; the surface at the apex and near the margins is flavo-pubescent, and in colour nigro-ferrugineous, the margins and the apex being irregularly flavous, and marked in an obliquely transverse direction by short subsinuate bands of darker flavous. Antennce filiform, in colour testaceous, the two basal joints being ferrugineous. Legs flavous throughout. From the Island of St. Catherine, Brazil. In the collection of M. Deyrolle. 28. Hypolampsis vicina. H. oblongo-ovata, subcylindrica, subparallela, subtiliter pubescens, flavo-fusca ; capite brevi, depresso, inter oculos oblique foveolato, granulato ; thoraee transverso, basin versus subconstricto ; elytris sat latis, punctato-striatis ; antennis ad apicem suhincrassatis, jlavis, art. 6-8 fuscis; pedibus Jlavis, femoribus posticis fuscis, tibiisque rvfis. Long. corp. 1^ lin., lat. -J lin. Oblong-ovate, subcylindrical, subparallel, very finely pubescent, of a navo-fuscous colour. Head short, depressed almost at right angles to the thorax, not produced in front ; at the base of the antennas are two minute oblique depressions extending to the upper and inner margins of the eyes, forming together the character of the letter V ; the surface is finely granulated and subpubescent, more distinctly so at the base. Thorax transverse (almost quadrate), slightly constricted towards the base ; the sides are submarginate, more broadly near the anterior angles ; at the basal angles is a minute depression. Scutellum triangular, fuscous. Elytra distinctly broader than the thorax, tolerably robust, deeply punctate-striate, and when viewed under a high power covered with a short flavous or ashy-grey pubes- cence. Antenna; filiform, slightly incrassated at the apex ; the joints one to five flavous, six to eight fuscous, nine to eleven flavo-testaceous, the apical joint being suffused with fuscous. Legs tolerably robust ; the anterior flavous throughout ; the posterior femora darkly fuscous, and the tibiae rufous. Columbia. In the collection of M. Chevrolat. 254 HTrOLAMPSIS. 29. Hypolampsis Fryella. H. oblonga, ovata, fiavo-pubescens, punctato-striata, paUide rufo- fiava ; capite brevi, inter oculos Y-foveolato, punctato, nifo- ferrugineo ; thorace subquadrato, ad basin subtiliter constricto et transverse depresso, punctato, jiavo-pubescenti, rufo-Jtavo^ ; elytris subcylindricis, punctato-striatis, ante medium depresses, irregulariter Jlavo-pubescentibus ; antennis subdilatatis, paUide flavis, art. 7 et 8 ferrugineis ; peclibus paUide flavis. Long. corp. 1| tin., lat. f tin. Oblong, ovate, flavo-pubescent, pnnctate-striate, of a pale rufo- flavons colour. Head short, transverse, hardly produced in front ; above the labrum is a transverse plane depression ; immediately above the base of the antennae is a small longitudinal medial fovea, which bisects at its upper extremity another transverse fovea, this latter extending obliquely to the upper and inner margin of the eyes ; the eyes are in form globose, situated at the base of the head ; the surface is finely punctate, and in colour rufo-ferrugineous. Thorax trans- verse (almost quadrate) ; the anterior margin slightly rounded ; at the base the sides are subconstricted ; near the basal line (and also less broadly near the anterior margin) the surface is transversely de- pressed ; finely punctate, flavo-pubescent, and rufo-flavous, the sides beino- narrowly piceous. Scutellum triangular, impunctate, rufo- ferru°ineous. Elytra sub cylindrical, punctate-striate, antemedially depressed, clothed irregularly with thick pale flavous pubescence ; this pubescence gives a pale flavous colour to the apex, to the margination, and also to an irregularly-formed medial oblique band, which extends from the margination to the fifth or sixth striae ; the antemedial de- pression also is similarly flavo-pubescent. Antennas filiform, with a tendency to dilatation ; in colour pale flavous, the seventh and eighth joints being ferrugineous. Legs pale flavous, the inflation above the apical claw being rufous. The form of the thorax will identify this species from among most of its congeners ; it is slightly constricted at the base, and transversely depressed at the anterior as well as the posterior margins ; it may be distinguished still further by its pale flavous colour and the markings on the elytra. Petropolis, Organ Mountains ; Rio Janeiro. Taken by Mr. Fry, and in that gentleman's cabinet. 30. Hypolampsis fusca. H. oblongo-ovata, parallela, subcyUndrica, subpubescens, nigro- fusca ; capite inter oculos foveolato ; thorace ehngato, ad basin nrroLAMrsTs. 255 constricto et depresso ; elytris punctato-striatis, transverse sub- depressis; antennis robustis, subincrassatis, art. 1-4: flavis, 5-11 fuscis ; pedibus anterioribusfiavis,femoribusposticis nigro-fuscis, tibiisque rufis. Long. corp. 11 lin., lat. |- lin. Oblong-ovate, parallel, subcylindrical, sparingly testaceo -pubes- cent, nigro-fuscons. Head short, very slightly produced ; between the labrum and the base of the antennae are two obliquely transverse carinations ; immediately above the base and between the eyes is a slight but well-defined fovea in the form of the letter Y ; the eyes are large, prominent, extending laterally as far as the anterior angles of the thorax; the surface is finely punctate. Thorax elongate, rectangular ; the anterior angles are much depressed ; the sides marginate, and constricted at the base ; a broad transverse depression extends postmedially along the line of the base, which gives a distinct appearance of prominence to the antemedial surface ; a faint longi- tudinal depression (apparent when viewed from behind) extends medially from the anterior margin nearly to the base. Scutettum triangular. Elytra subparallel, subcylindrical, punctate -striate, ante- medially transversely subdepressed. Antenna} tolerably long, robust, subincrassated towards the apex ; the joints one to four flavous, five to eleven (which are gradually dilated) fuscous. Legs : the anterior flavous ; the posterior femora nigro-fuscous, and tibiae rufous ; the dilatation of the apical claw brightly rufo-piceous. This species at first appearance closely resembles H. minima ; both species are of nearly the same size, form, colour, and pubescence ; H. fusca however is, on examination, obviously distinct ; the Y-shaped fovea between the eyes, its elongated thorax, and the coloration of the posterior legs (as well as the difference in their relative length ; the femora in H. minuta being short ; in H. fusca more elongated, and extending nearly as far as the apex of the elytra) sufficiently distinguish it. Petropolis (Organ Mountains) ; Eio Janeiro. In the collection of Mr. Fry. 31. Hypolampsis anceps. H. oblongo-ovata, subparallela, depressa, punctato-striata, impu- bescens, rufo-ferruginea, nitida ; capite brevi, hnpunctato ; tho- race transverso, late marginato, ad basin foveolato, subtiliter punctato ; elytris subparallelis, punctato-striatis, ad suturam rufo-notatis ; antennis i*obustis, filiformibus, fuscis, ad basin rufis ; pedibus rufo-ferrugineis. Long. corp. 1^ lin., lat. J lin. 25G HTPOLAMPSIS. Oblong-ovate, subparallel, somewhat depressed, punctate-striate, impubescent, shining, darkly rufo-ferrugineons. Head short, not produced in front ; the eyes are large, in form globose, and somewhat prominent, situated at a little distance from the base of the head : the surface between the eyes (immediately adjoining the base of the antennae) is slightly porrected in front, and coarsely and unevenly granulated ; the rest of the surface is glabrous, with a few very mi- nute spots grouped together medially. Thorax broader than the head, transverse, in front slightly emarginate ; the anterior angles are depressed and subacute ; the sides are broadly marginate, and in outline slightly rounded ; at the base (when viewed laterally) is a transverse thread-like distinct fovea, extending parallel to, and closely adjoining the basal hue; the surface (when Viewed under a high power) is sparingly and very minutely punctate. Scutellwm triangular, impunctate. Elytra broader than the thorax, subparallel, rounded at the apex, punctate-striate throughout (the punctures being most readily apparent near the margination, and becoming obsolete as they approach the apex) ; a faint transverse antemedial depression gives a slight appearance of prominence to the scutellary angles ; the surface is of a rich dark rufo-ferrugineous colour, with suffused markings of rufous ; a broad postmedial transverse band is well defined at its anterior margin (which is subcircular in form), but has no clearly-marked boundary towards the apex ; medially, two circular spots (between the first and second stria?) closely adjoin (but are separated one from another by) the suture; while near the scutellum, the surface is, on either side of the suture, longi- tudinally marked with the same rufous colour. Antenna? robust, filiform ; the first joint (as compared with that of adjoining species) is relatively much elongated; the three basal joints are in colour rufous, the rest are fuscous. Leys sufficiently elongated, rufo-ferru- gineous throughout. Brazil (St. Paul's). In the collection of M. Chevrolat. Subdivision B. Elytra robustiora, interdum subglobosa, brevia ; late- ribus plus minus rotundatis, haud parallelis. 32. Hypolampsis robusta. H. ovata, lata, robusta, pubescens, pallide rufo-ferruyinea ; thorace qwdrato, rectdineari, ad basin transverse depresso, linea longi- tudinali media, suffusa, picea ; elytris latis, amplis, punctato- striatis, transverse subdepressis ; antennis Jiliformibus, rufo- JJavis, ad apicem piceis ; pedibus robustis, rufo-Jlavis. Long. corp. 1-^ lin., lat. |- lin. IIVI'OI.AMI'SIS. 257 Ovate, broad, robust, of a rafo-ferrugineous colour, finely pubes- cent. Head short, depressed, slightly elongated in front ; the eyes are subprominent, extending nearly as far as the anterior angles of the thorax ; the surface is finely punctate, above the insertion of the antennae very sparingly clothed with pubescence, ferrugineo-rufous. Thorax quadrate, rectilinear, rectangular ; the anterior angles are depressed; the sides are marginate; the surface at the base is broadly and transversely subdepressed ; subpubescent, and in colour rufo-ferrugineous, a longitudinal medial line being piceous, and the margination fuscous. Scutellum small, triangular. Elytra broad, robust, punctate-striate, broadly subdepressed from the antemedial suture towards the shoulders; finely pubescent throughout. An- tennce long, filiform (with a slight tendency to incrassation towards the apex), rufo-flavous, the apical joints being piceous. Legs robust, rufo-flavous ; the anterior pair suffused at the base of the femora with piceous. The pale coloiu- and distinct pubescence of this species sufficiently separate it from the other species of the subsection. Bahia. In the collection of the Rev. H. Clark. 33. Hypolampsis aestivalis. H. ovata, robusta, hnpubescens, punctata , nigra ; capite brevi, stib- puncfato ; thorace transversa, rectangulari,fiavo-pubescenti; ely- tris robustis, punctato-striatis, ante medium transverse depresses ; antennis ('! ' fill for mibus) art. 1 et 2 flavis (ceteri desunt) ; pedi- bus jiavis, femoribus posticis piceis. Long. corp. 11 lin., lat. | lin. Ovate, robust, impubescent, punctate, black. Head short, not produced in front ; below the base of the antenna? is a transverse depression ; the eyes are large, and in form globose, situated at the base of the head ; the surface between the eyes is equate, and un- marked by any carination or depression ; punctate. Thorax broader than the head, transverse, rectangular, rectilinear ; the anterior angles are much depressed; the surface is equate, finely flavo- pubescent, obsoletely punctate, and of a dull black colour. Scutellum triangular, flavo-pubescent. Elytra much broader than the thorax, robust, subcylindrical, punctate-striate, the striae being almost ob- solete and the punctures distinct and deep ; an antemedial transverse depression gives a prominence to the base ; the surface is glabrous and black, tinged with rufous. Antennae : the first two joints are flavous, the basal being suffused with ferrugineous (the rest are 258 HTPOLAMPSIS. Avanting). Legs flavous, the posterior femora being piceous, and the globular inflation of the postical claw rufo-flavous. This species may be at once separated from H. poreidus, to which it is nearly allied, by the absence of striae as well as of pubescence on the elytra. Brazil. In the collection of M. Deyrolle. 34. Hypolampsis pilosa. 77/. {and. Mm. B. Chev.). III. Mag. v. p. 105. H. oblongo-ovata, rohusta, lata, subcylindrica, pubescens, fusco- jiava ; capite brevi, granulate, fiavo-ferrugineo ; thorace trans- verso, antice subattenuato, cequato,jlavo-piibescenti,fusco; elytris latis, globosis, punetato-striatis, Jlavo-jnibescentibus ; antennis subincrassatis, Jlavis ; pedibus Jlavis. Long. corp. 1 lin., lat. | lin. Oblong-ovate, very robust, subeylindrical, punctate-striate, clothed throughout with fusco-flavous pubescence. Head short, transverse, slightly produced in front, above the labrum transversely depressed ; the upper surface between the eyes is apparently without fovea or depression ; the surface is granulated, and in colour flavo-ferrugi- neous. Thorax transverse, subeylindrical ; the sides much de- pressed, and in front subattenuated ; the surface is equate and flavo- pubescent, the colour fuscous. Scutellum minute. Elytra very much broader than the thorax, globose, evenly punctate-striate ; the striae are distinct, but the punctures are entirely concealed by a thick flavous pubescence ; the surface is equate and fuscous. Antenna'. subincrassated towards the apex, flavous. Legs flavous throughout. This species may be separated from its congeners by its broad and subglobular elytra, by the absence of any antemedial depression, and by its comparatively small and equate thorax. Pennsylvania (N. America). From the collection of M. Chevrolat. 35. Hypolampsis porculus. H. ovata, lata, robusta, impubescens, nigro-picea ; thorace trans- verso, ad basin et ad latera depresso, ad latera jlavo-pubescenti, gramdato ; elytris latis, sabglobosis, punctato-striatis, ante me- dium transverse subdepressis ; antennis ad basin rufo-Jlavis (art. 3-11 desuni) ; pedibus anterioribus jlavis, posticis femoribns pi - ceis, tibiis subarcuatis, rufo-Jlavis. Long. corp. 1 lin., lat. § lin. Ovate, broad, robust, impubescent, black. Head short, transverse, BTPOLA.MPSIS. 259 not produced ; the eyes arc tolerably large, and situated at the base of the head; the surface is granulated. Thorax transverse; the anterior angles depressed and obsoletcly subacute ; the sides mar- ginate ; near the anterior margin are two faint and obsolete pro- minences, which are caused by a broad subdepression at the base, and also more apparently at the sides; the surface is clothed at the sides very sparingly with flavous pubescence, and coarsely granu- lated. Scutellum triangular, impunctate. Elytra much broader than the thorax, subglobose, deeply and coarsely punctate-striate, ante- medially transversely subdepressed. Antenna; : the basal joint rufo- flavous (the rest are wanting). Legs : the anterior flavous ; the posterior femora piceous, the tibia) slightly arcuate near their base ; short, rufo -flavous, the globular inflation of the posterior claw being bright rufous. Brazil. 30. Hypolampsis gibba. H. ovalis, rohusta, subpubescens, picea ; capite brevi, subtiliter punctata, piceo ; thoraee transverso, oblique depresso ; elytris latis, robustis, punetato-striatix, ad apicem et latera irregulariter rufo-pubescentibus ; antennis brevibus, ad, apicem subdilatatis, rufo-piceis, art. basalibus fiavis ; pedibus Jlavis, tibiis anteriori- bus femoribusquc postieis piceo suffusis. Long. corp. 1\ lin., lat. f lin. Oval, robust, finely pubescent, piceous. Head not produced in front, transverse ; the eyes are large, lateral, and in form oval, situated near the base of the head ; from the insertion of the an- tennae to the basal line extends a medial longitudinal carination ; the surface is finely punctate, and in colour piceous. Thorax trans- verse, rather broader than the head ; the anterior angles depressed and subacute ; the sides broadly mai^ginate ; the anterior angles are much depressed ; from the basal line a broad depression extends obliquely upwards towards the humeral angles ; the surface is finely punctate. Scutellum triangular, situated below the plane of the elytra. Elytra broad, robust, punctate-striate, clothed irregularly near the apex and also at the sides with rufo-flavous pubescence ; this pubescence forms an obscure oblique band, which is more di- stinct near the margination ; an antemedial transverse depression extends obliquely upwards towards the shoulders. Antennas short, subdilatecl towards the apex, in colour rufo-piceous, the basal joints being flavous. Leys flavous, the anterior tibia? and the postical femora being suffused with piceous. This species is in general form nearly allied to H. porculus ; it « 9 260 IMATIUM. may, however, at once be separated from it by its more transverse thorax and the less deep punctuation on the elytra ; from H. aesti- valis it may be separated by its striation as well as by its pubescence. Taken by the late Mr. Squire in the neighbourhood of Rio Janeiro. In the collection of Mr. Baly. 37. Hypolampsis suborbicularis. H. ovata, robusta, punctata, siibpubescens, fiavo-ferruginea ; capite brevi, transverso, subtiliter granulato, impubescenti ; thorace trans- verso, Jlavo-pubescenti, punctato ; eh/tris latis, robustis, brevibus, ante medium transverse depressis, punctato-striatis ; antennis subincrassatis, Jiavis, art. 5-8 fuscis ; pedibus jiavis, femoribus posticis rufo- flavis. Long. corp. 1 lin., lat. \ lin. Ovate, robust, punctate, finely pubescent, flavo-ferrugineous. Head short, transverse, not produced in front ; the eyes are in form oval, situated at the base of the head, lateral ; immediately above the base of the antennae is a small medial longitudinal fovea ; the surface is finely granulated and impubescent. Thorax transverse, slightly broader than the head; the anterior angles are depressed and almost obsolete ; the sides subsinuate and finely flavo-pubescent ; punctate. Scutellum minute, triangular. Elytra much broader and more robust than the thorax, short, antemedially transversely de- pressed ; rows of punctures arranged in the form of striae are di- stinctly apparent at the base and medially, but become obsolete near the apex. Antenna; short, subincrassated, the third joint being attenuate, the sixth to the ninth subincrassated (the rest are wanting) ; in colour flavous, the joints fifth to eighth being fuscous. Legs flavous, the anterior tarsi being suffused with fuscous, and the posterior femora rufo-flavous. Brazil. In the collection of M. Deyrolle. Genus 39. IMATIUM*. Palpi maxillares robusti, subincrassati, art. ultimo haud elongato. Palpi labiales attenuati, subcylindrici. ANTEXNiK approximates, robustce, incrassatoz, art. 5-10 brevibus. Caput depressum, subverticale haud productum, granidatum,pubeseens. Thorax transversus, antice plus minus emarginatus, depressus, pu- bescens. * ifictTiov, Testis. T.MATIUM. 261 Elytra rotundata vel subrotundata, late striato-punctata, pube dense vest it a. Pedes: tibiis anterioribas subineurvatis ; posticis femoribus brevibus et incrassatissimis ; tibiis pcene rectis, ad apicem extremum bi- calcaratis. Labrum transverse, rounded at the margins. Maxillary palpi (Front, fig. 8 m ; Tab. IX. fig. 6 m) robust ; the basal joint minute ; the second somewhat broader at the apex and obliquely truncate ; the third nearly twice the breadth of the second, in form globular ; the apical joint is minute, not elongated. Labial palpi (Front, fig. 8 n ; Tab. IX. fig. G n) attenuate, sub- cylindrical, the penultimate joint being somewhat broader than the rest. Antenna; approximate, situated between the lower margins of the eyes, robust, incrassated ; the basal joint is long, thickened near the apex, and not inflected ; the second is half the length of the first, much narrower, and in form ovate ; the third and fourth are sub- equal in length, attenuate, and not broader than the second ; the remaining joints are broadly dilated and abbreviated ; near the apex of all the joints are four or five distinct or rigid hairs. Eyes lateral, situated at the base of the head, in form subovate, not prominent. Head depressed, almost vertical to the plane of the elytra, not pro- duced in front ; above the labrum is a transverse carination ; the surface is clothed with coarse pubescence, and, below the pubescence, apparently punctate or granulated. Thorax transverse, anteriorly emarginate ; the sides are marginate ; the basal line is produced medially (near the scutellum) into an ob- tuse angle ; the surface Is rounded, equate, and clothed throughout with coarse pubescence. Scutellum triangular, situated slightly below the plane of the elytra, finely punctate, impubescent. Elytra very broad and globose, rotundate, much broader and more robust than the thorax ; the surface is unmarked by any antemedial transverse depression ; punctate-striate ; sometimes the striae are nearly obsolete, and the punctures broad and shallow ; the surface is clothed throughout more or less completely with coarse pubescence. Legs : the anterior sufficiently long and robust. The anterior femora are cylindrical, slightly incurved. The tiUce are straight, hardly dilated towards the apex. The tarsi (Front, fig. 8 d) are ab- breviated, the two basal joints being triangular, and subequal in size not broader than the apex of the tibia) ; the third joint is almost twice the breadth of the basal joints, transverse, and subbilobed ; the apical 262 IMATIUM. claw is bifid, and armed on either side at its base with a short robust spur. The posterior legs are short. The femora (Front, fig. 8/), when viewed laterally, are very broadly incrassated, the breadth being more than hall' the length. The tibice (Front, fig. 8/) are short and almost straight ; when seen from behind, a longitudinal groove from the base to the apex is apparent ; the margination of the groove is simple and straight ; below the insertion of the tarsus the extreme apex is produced into two robust incurved claws. The tarsi (Front, fig. 8 h) are short and attenuate ; the apical claw, which is minute, being almost entirely concealed by the globular inflation of the idtimate joint. This genus is remarkable for its short and globular form and its covering of thick pubescence ; it may be separated, prima facie, by these two characters from all other genera in the group. The species composing it are apparently very rare, and found only in the neigh- bourhood of Rio de Janeiro. 1. Iinatium toinentosum. (Tab. IX. fig. 6.) I. globosum, rotundatum, Icevigatum, pube jiava vestitum, rufo-fer- rugineum ; cctjpite brevi, pcene verticali ; thorace transverso, ad latera obsolete marginato, antice subcontracto ; elytris subspheericis, brevibus, striato-punctatis, ad apicem flavo-pmbescentibus ; an- tennis brevibus, incrassatis, art. 1-4 ferrugineis, 5-11 nigris ; pedibus rufo-Jlavis, tarsorum aider, art. 1-3 nigris. Long. corp. 2\ lin., lat. If lin. Subspherical, rotundate, broad, ferrugincous, clothed throughout (but especially at the margins) with a fine silken yellow pubescence. Head small, very depressed, almost entirely vertical ; labium dark ferrugincous : surface below the insertion of the antennas subcom- planate ; the antennae are approximate ; above the insertion of the antenna) and between the eyes is a medial longitudinal fovea : the eyes are small, situated at quite the base of the head, not extending laterally so far as the anterior angles of the thorax ; the surface is coarsely granulated. Thorax transverse, depressed; the sides are obsoletehj marginate and subcontracted towards the front ; the basal line is angulated at the scutellum ; the surface is rugose and granu- lated. Scutellum slightly elongate, subcordiform, impunctate. Elytra very broad, subspherical, short, with rows of coarse and shallow punctures arranged in the form of stria?, but almost concealed at the sides and near the apex by flavous pubescence. Antennae; much shorter than the elytra, incrassated, robust; the first joint long, broadly di- lated at the apex; the second short, ovate; the third and fourth IMATIUM. 2G3 narrower than the first and second, and shorter than the first, slightly diluted towards their apex ; the fifth to eleventh shorter (the terminal joints being shorter even than the second), broadly incrassated ; in colour, the first to fourth ferrugineous, the fifth to eleventh black. Legs rufo-flavous throughout, the three basal joints of the anterior tarsi being distinctly black. /. tomentosum differs from /. rotundatum in its non-concolorous antennas, the black colour of the three basal joints of the anterior tarsi, and in the form of the punctures on the elytra, which are broader and less apparently deep than in the next species. Brazil. 2. Imatium rotundatum. I. subsphcericum, valde Jlavo-pubeseens, flavum vel fusco-flavum ; capite abbreviate, depresso, ad basin antennarum obsolete bitu- berculato ; thorace valde transverso, depresso ; elytris latis, am- plisdmis, punetato-striatis ; antenms brevibus, incrassatis, art. 1-8 fulvis, 9-11 flav is ; pedibus flavis. Long. corp. 2^- lin., lat. 2 lin. Subspherical, thickly flavo-pubescent throughout, and in colour fusco-flavous. Head very short, much depressed (almost vertical) ; the eyes are small, not projecting laterally ; between the eyes is an obsolete transverse depression; between this transverse depression and the base of the antennas are two oblong tubercles (the channel between them forming, together with the transverse fovea, a de- pression in the form of the letter T) ; the surface of the head is flavous or fusco-flavous, and less distinctly granulated than in /. to- mentosum. Thorax transverse (much more transverse than in 1. to- mentosum), considerably inclined or sloping towards the head ; the sides are gradually compressed towards the apex and marginate, especially towards the anterior angles (which are much depressed) ; a broad and shallow transverse depression extends parallel to the basal Hue (most apparent when viewed in front). Scutellwn tri- angular, flavous. Elytra much broader and more robust than the thorax, subspherical, punctate-striate, the punctures being deep and the stria? almost obsolete, clothed throughout with a thick pilose flavous pubescence. Antennas short, robust, and incrassated ; the first joint is long, and broadly dilated at the apex ; the second is short and ovate ; the third as long as the first, and rather longer than the fourth and fifth ; the following joints are gradually dilated, especially the sixth to the eighth (but not so broadly as in /. tomentosum) ; in colour, first to eighth fulvous, ninth to eleventh flavous. Legs entirely flavous. 264 IMATIUM. This species may be recognized (as compared with /. tomentosum) by its more pale flavous colouring (instead of ferrugineous), by the form of, and transverse depression at the base of, the thorax, by the less distinct dilatation of the antenna), by the character of the punctuation on the elytra, and by the colouring of the antenna) and anterior tarsi. Brazil. 3. Imatium velutinum. (Front, fig. 8.) I. ovatum, latum, subtillter flavo-pnbescens ; ilxoraee transverso, ad latera sinuato vel subrotundato, punctato ; elytris robustis, brevibus, ante medium transverse depressis, punetato-striatis, ad basin distincte pubescentibus ; antennis brevibus, art. 1-4 Jlavis, 5-9 dilatatis nigrisque, 10 et 11 Jlavo-testaceis ; pedibus JJavis. Long. corp. 2 lin., hit. 1-i- lin. Ovate, broad, covered with a pale fulvo-fiavous pubescence, of a flavous colour throughout. Head short, depressed, hardly produced ; above the base of the antenna? and between the eyes is an obsoletely transverse, and another longitudinal depression, crossing each other at right angles ; the eyes are tolerably large, situated close to the basal line ; the surface is thickly punctate. Thorax transverse (almost quadrate), depressed ; the anterior angles are subacute; the sides are marginate, and slightly constricted close to the anterior and posterior angles, and medially rounded ; at the base is a slight trans- verse depression ; the surface is slightly rotundate, thickly punctate, and finely pubescent. Scutellum triangular, impunctate, flavous. Elytra broad, robust, parallel, punctate-striate (the stria) being shallow, and the punctures broad) ; a transverse antemedial depression ex- tends obliquely and upwards towards the humeral angles, giving an appearance of prominence to the surface adjoining the scutellum; the sm-face is almost glabrous (except under a high power, when it is seen to be fineljT pubescent), more distinctly pubescent at the apex. An- tenna} robust, somewhat dilated towards the apex ; the joints first to fourth flavous, fifth to ninth dilated, and in colour black, the tenth and eleventh flavo-testaceous. Legs tolerably robust ; the terminal joint of the posterior tarsi strongly bilobed ; the posterior robust aud abbreviated ; the colour is flavous throughout. I feel some hesitation in placing this species in the same group as /. tomentosum and /. rotundatum ; it is not quite so rotundate, the elytra (though broad and robust) arc hardly hemispherical, and the form is not so globular; inasmuch, however, as there is little, except siwRxtrs. 265 this general divergence of form, to separate it, I have determined to register it, provisionally at least, as an Imatium. A single example of this species was taken by my friend Mr. Gray and myself near Petropolis, Organ Mountains, in February 1857. Genus 40. SPARNUS*. Palpi maxillares breves, dilatati, art. 3''" subrotundato, art. V" brevi, compresso. Palpi labiales minuti, svheylindrid. Antennae breves, incrassatce. Caput breve, depressum, Icevigatwm. Thorax late transversus, angulis anticis depressis, lateribus antice sub- constrietis. Elytra depressa, lata, suborbiculata, punctata, impubescentia. Pedes sat robitsti, femoribus posticis incrassatissimis, apicibus haud clytrorum apicem attingentibus. Labrum short, subcircular, medially obsoletely sinuate. Maxillary palpi (Tab. IX. fig. 4 m) short, dilated at the apex ; the first joint minute, hardly more elongate than the second, and broad ; the third transverse, the breadth being greater than the length, in form rotundate ; the terminal joint is short, broad, and compressed. Labial palpi (Tab. IX. fig. 4 m) minute, subcylindrical, robust. Antenna? approximate, situated between the lower margins of the eyes, short, robust, and in form incrassated ; the basal joint is elongate, subincurved, and dilated towards the apex ; the second is short and ovate ; the third of the same length as the first, attenuate ; the fourth rather shorter than the third, and subdilated at the apex ; the remaining joints are broadly incrassated and short. Eyes lateral, situated at the base of the head, large, and globose. Head short, considerably depressed, almost vertical, not produced in front; below the base of the antennas is a deep triangular de- pression ; between the eyes is a distinct and acutely depressed T- shaped fovea ; the siu-face of the head is levigate. Thorax broadly transverse ; the anterior angles are much depressed and slightly rounded ; the sides are marginate, diverging slightly one from another towards the elytra ; the basal line is in form arcuate ; the surface is equate and subglobose, the sides being broadly and distinctly depressed. Scutellum triangular, punctate, levigate. * 46 47 47 48 49 50 50 51 52 280 52 Genus 6. Tetragonotes (pag. 53). Parallela; tborace elongato, rect- angulari, ad latera distincte angulato ; tibiis posticis apud mar- ginationem sinuatis. 1. elegans . . 2. atra . . . 3. caleeata . . 4. subanchoralis 5. angulicollis . 6. vittata . . 7. hexaofona. . Genus 7. Pachyonychis (pag Organ Mountains Organ Mountains Brazil .... Venezuela . . Brazil ..... Organ Mountains Brazil .... 55 56 57 58 59 59 60, 281 61). Sat robustus, depressus ; tborace lateribus haud angulatis, sed coarctatis ad apicem et ad basin ; tibiis posticis ad apicem calcaratis, tarsorum art. 2nd0 brevi. 1. paradoxus .... Philadelphia 63 GENERUM DIAGNOSES 291 Genus 8. Eutornus (pag. 64). Statura et forma penitus ut in genere (Edionyche ; robustus, latds, brevis ; thoraee lato ; tibiis posticis rectis, inarmatis, l)revibus. pao.(, 1. Africanus .... Sierra Leone 65 Genus 9. Phsedromus (pag. 66). Parallelus, subattenuatus, depressus; thoraee transverso, lateribus (ut in genere Tetragonote) angulatis; tibiis posticis ad marginationem sw&sinuatis. 1. Waterhousii . . . South Carolina 68 Genus 10. Physimerus (pag. 69). Sat latus, parallelus ; antennis plerumque fiKformibus (rarius suiincrassatis) ; thoraee angulis anticis distinctis, haud ut in genere BMnotmeto rotundatis, qua- drato (rarissime transverso) ; tibiis posticis ad marginationem rectis, nunquam calcaratis. 1. impressus 2. vittatus . . 3. quatuor-lineatu: 4. virgatus . . 4 a. vulgaris . . 5. labialis . 6. ambiguus 7. agilis . . . 8. revisus . . 9. luteicollis 10. inornatus 11. minutus . . 12. obscurus . . 13. fascicularis . 14. trivialis . . 14 a. rusticus . . 15. juvencus . 16. ephippium . 17. suboculatus . 18. adumbratus . 19. brevicollis . 20. angulo-fasciatus 21. bituberculatus 22. bilineatus 23. Batesii . . 24. irroratus . . 25. nebulosus 26. pruinosus 27. griseostriatus 28. Allardii . -. Organ Mountains . . . . 71 Rio Janeiro 72 Brazil 72 Columbia 73 Rio Janeiro 282 Mexico 74 Organ Mountains .... 75 Organ Mountains .... 76 Brazil 77 Rio Janeiro 77 Amazon 78 Amazon 79 Brazil 79 Organ Mountains .... 80 Brazil 81 Rio Janeiro 283 Amazon 81 Amazon 83 Para 83 Amazon 84 Amazon 85 Amazon S(i Amazon 87 Amazon 88 Amazon 89 Amazon 89 Rio Janeiro 90 Columbia 91 Amazon 92 Rio Janeiro ...... 284 Genus 11. Glenidion (pag. 93). Parallelum, elongatum; thoraee transverso ; pedibus posticis elongatis ; tibiis elongatis, et rectis, inarmatis, ad apicem calcaratis, tarsorum articulo basali pro- ducto. 1. rubronotatum . . . Brazil 95 v2 292 CATALOGUS GEOGRAPHICUS ET Genus 12. Hypantherus (pag. 95). Latus, robustus, haud depressus; antennis plus minus incrassatis ; thorace transverso ; tibiis pos- ticus juxta tarsonim insertionem apud marginationem calcaratis, ad apicem ipsum bicalcaratis. 1. concolor Amazon 97 2. ambiguus .... Amazon 98 8. assimilis Rio Janeiro 99 4. Batesii Amazon 100 5. Deyrollii Island of St. Paul .... 100 6. rufo-testaceus . . . Brazil 101 Genus 13. Thrasygoeus (pag. 102). Latus, subdepressus ; thorace lato ; antennis filiforinibus ; tibiis posticis rectis. inarmatis. 1. eximius Amazon 103 2. exaratus Brazil 104 3. obscurus .... Brazil . 105 4. undatus . . . . . Venezuela 106 Genus 14. Eupeges (pag. 107). Robusta, subparallela ; antennis filiformibus ; thorace lato, ad latera subrotundato ; tibiis posticis simplicibus. 1. praeclara Amazon 108 2. scabrosa Brazil 109 3. nigrifrons .... Brazil 109 Genus 15. Phylacticus (pag. 110). Sat robustus, parallelus ; an- tennis filiformibus ; thorace transverso ; elytris subtiliter pu- bescentibus ; tibiis posticis simplicibus, ad apicem ipsum bical- caratis. 1. modestus Amazon 112 2. ustulatus Cayenne 113 3. olivaeeus Amazon 118 4. prasimis Para 115 5. pollinosua .... Bio Janeiro 115 6. amabilis Amazon 110 Genus 16. Homammatus (pag. 116). Robustus, latus, brevis ; an- tennis subincrassatis ; capite verticali ; thorace subquadrato ; elytris ante medium distincte transverso-depressis ; tibiis pos- ticis ad marginationem subsinuatis, haud calcaratis. 1. tur°:idus Rio Janeiro 118 2. nitidus Columbia 119 Genus 17. Homotyphus (pag. 120). Latus, subpubescens, plerum- que subtiliter vel distincte tuberculatus ; antennis plus minus dilatatis ; thorace transverso ; elytris ante medium plerumque GKXERUJI DIAGNOSES. 293 transverse depresses ; tibiis postieis rectis, ad marginationem ecalcaratis, ad apicem ipsum bicalcaratis. 1. lacunosus 2. Vellereus 3. fuliginosus . 4. asper . . . 5. squalidus 6. holosericeus . 7. maculicornis 8. Wollastonii . Pago Eio Janeiro 122 Minas Geraes 123 Mexico 124 S. America 125 Mexico L26 Rio Janeiro 12(3 Mexico 127 Bahia 128 Genus 18. iEdmon (pag. 129). Latum, robustum, ad latera rotun- datum; antennis subincrassatis, robustis, hirsutis; tborace trans- verso, ad basin constricto ; tibiis postieis ad marginationem uni- dentatis. 1. sericellum .... Porto Rico 131 Genus 19. Pleurochroma (pag. 131). Latum, subdepressum, gla- brum ; antennis sw&incrassatis ; thorace transverso ; elytris bre- vibus, robustis ; tibiis postieis ad marginationem simplieibus, subsinuatis. 1. balteatum .... Amazon 133 2. nitidulum .... Amazon 134 3. pallidum .... Amazon 134 Genus 20. Leptotrichus (pag. 135). Robustus, brevis, subparallelus, sat convexus ; palpis maxillaribus elongatis et attenuatis ; an- tennis distincte incrassatis ; capite vertieali ; tborace transverso, convexo ; tibiis postieis ad marginationem rectis, ad apicem uni- calcaratis. 1. castaneus .... Amazon 136 Genus 21. Panchrestus (pag. 137). Robustus, brevis, parum con- vexus ; antennis incrassatis (hand ut in genere Leptotricho) ; thorace transverso, lateribus interdum subtiliter angulatis ; elytris ante medium transverse subdepressis ; tibiis postieis simplieibus, brevibus. 1. pulclier Amazon 139 2. rubicundus .... Amazon 139 3. inconspicuus . . . Amazon 140 4. rufescens Amazon ....... 141 Genus 22. Hylodromus (pag. 142). Latus, robustus, depress; antennis art. 3-6 incrassatis; tborace transverso, ad basin constricto ; elytris depressis, sat latis ; tibiis postieis apud mar- ginationem simplieibus, ad apicem dilatatis et unicalcaratis. 1. dilaticornis .... Amazon 143 294 CATALOGTJS GEOGRAPHICUS ET Genus 23. Ccalocephalus (pag. 144). Subcyhndricus, parallelus ; antennis filiformibus, elongatis ; eapite brevi ; thorace quadrate ad basin constricto ; tibiis posticis brevibus, simplicibus, ad apicem unicalearatis. p 1. pulchellns Amazon ....... 145 2. amcenus Amazon 146 3. pygmams Amazon 147 4. fusco-costatus .... Amazon M8 Tribus II. Palpi maocillares ad apicem incrassati. Genus 24. Loxoprosopus (Ghierin-Meneville) (pag. 149 et 286). Subcyhndricus, sat robustus ; antennis longissimis, vel quam alia genera longioribus, filiformibus ; eapite verticali, antice sub- producto ; tborace transverso, rectangulari ; tibiis posticis sim- plicibus, haud calcaratis. 1. cemmhoides (Guer.-llen.) Rio Janeiro 151 2. marginatus Amazon 152 3. humeralis Amazon 153 4. cnernlens Amazon 154 Genus 25. Peribleptus (pag. 155). Latus, robustus, parallelus; antennis filiformibus, sat longis ; eapite brevi, haud antice producto ; thorace transverso, ad latera subtiliter angulato, ad basin constricto ; elytris ante medium oblique depressis ; tibiis posticis brevibus, ad marginationem simplicibus, ad apicem unicalearatis. 1. hevigatus Rio Janeiro .... 157, 286 Genus 26. Octogonotes, Drop. (pag. 158). Robustus, subparallelus ; antennis filiformibus ; eapite brevi ; thorace transverso, ad latera distincte angulato ; elytris haud ante medium transverse de- pressis ; tibiis posticis simplicibus, ad marginationem sub- sinuatis. 1. brunneus Amazon 160 2. thoracicus (Guer.-JIeii. ) Cayenne 161 3. Banoni (Drap.) . . . Cayenne 162 4. binotatus Cayenne 163 5. sumptuosus .... Amazon 164 6. bicinctus Amazon 165 Genus 27. Apalotrius (pag. 166). Statura plerumque ut Octogo- note ; antennis filiformibus ; thorace transverso, ad latera recti- lineari ; tibiis posticis calcare ad marginationem super tar- sormn insertionem armatis. 1. pubescens .... Amazon 168 GENERUM DIAGNOSES. 295 Genus 28. Exartematopus (pag. 169). Latus, convcxus, Ucte colo- ratus, impubescens ; antcnnis robustis, apicem versus subincras- satis ; capite verticali ; thoraee lato, rectilineari, angulis an- ticis prominentibus, depresso ; elytris quam in gcnere Octogo- note breviora, robustiora ; tibiis posticis ad ruarginationem sim- plicibus, ad apicem distinete bicalcaratis. p 1. nobilis Espiritu Santo 170 2. Scutellaria .... Brazil 171 Genus 29. Hydmosyne (pag. 172). Subparallela, depressa; an- tennis nliformibus ; capite porrecto ; thoraee ad apicem con- stricto ; elytris parallclis ; tibiis posticis juxta tarsoiiim in- sertionem calcaratis, haud (ut in genere Atyplio) ad mediam marginationem. 1. inclyta S. America 174 Genus 30. Atyphus (pag. 175). Parallelus, cyllndricus ; antennis nliformibus ; thoraee transverso, rectilineari ; elytris parallelis ; tibiis posticis ad mediam marginationem calcaratis. 1. carbonarius .... Rio Janeiro .... 176, 286 2. flaviventris .... Brazil 177 3. comes Rio Janeiro .... 177, 287 4. furcipes New Granada 178 Genus 31. Gethosynus (pag. 179). Elongutus, subcylindricus ; an- tennis nliformibus ; thoraee transverso, ad latera subsinuato ; tibiis posticis ad marginationem calcaratis. 1. sang'uinicollis . . . Espiritu Santo 180 Genus 32. Allochroma (pag. 181). Latum, robustum, haud ut in genere Gethosyno subangustatum, plerumque ante medium trans- verse depressum, glabrum, coloratum (aliquando sed rarius pube tenui vestitum) ; antennis nliformibus, rarius incrassatis ; thoraee transverso, rectilineari ; elytris latis, brevibus, robustis, rarius ante medium transverse depressis, plerumque glabris ; tibiis posticis ad marginationem rectis aut sinuatis. 1. humerale . . 2. coccineum . 3. sex-maculatum 4. fasciatum 5. piceum . . 6. Balii . . . 7. lunatum . . 8. flavo-vittatum 9. venustum 10. niaTO-marginatum Amazon 183 Rio Janeiro 184 Brazil, &c 185 Guiana 186 Brazil 186 S. America (loco haud citato) 187 Amazon 188 Amazon 188 Brazil ........ 189 Rio Janeiro 100 296 CATALOGUS GEOGRAPHICUS ET Page 11. assimile Rio Janeiro 191 12. quatuor-pustulatum . Guatemala 191 13. festivum Brazil 192 14. sex-signatum . . . Brazil 193 15. generosum .... Columbia 194 Genus 33. Cerichrestus (pag. 194). ■ Parallelus, quam in genere Allochromate longior, plerumque subtiliter pubescens et pune- tato-striatus ; antennis robustis, filiformibus, aut aliquando sub- tiliter inerassatis ; thorace transverso, ad basin plus minus depresso ; elytris parallelis, punctato-striatis, haud ante medium depressis ; tibiis posticis simplicibus. 1. Balii Brazil ........ 196 2. apicalis New Granada 197 3. Deyrollii Cayenne 198 4. Batesii Amazon ....... 199 5. tenuicomis .... Amazon 200 6. exiguus Amazon 201 7. Cbevrolatii . . . . S. America (loco hand citato) 202 8. humilia Amazon 203 9. flavicans Amazon 204 10. murginieollis . . . Amazon 204 Geniis 34. Calipeges (pag. 206). Robustus, subcylindricus (non ut in genere Cerichresto elongatus); antennis inerassatis (plus quam in genere Cerichresto) ; elytris latis, ante medium fortiter trans- verse excavatis ; tibiis posticis simplicibus. 1. crispus Para ........ 207 Genus 35. Omototus (pag. 208). Robustus, brevis, plerumque pu- bescens ; antennis robustis, filiformibus, ad apicem interdum subdilatatis ; thorace transverso (rarius subquadrato), ad latera aliquando sinuato ; elytris brevibus : tibiis posticis ad margina- tionem plus minus calcaratis, rarius sinuatis. 1. morosus Cayenne 209 2. quadripes .... Cayenne 210 3. tuberculatus ... Bogota 211 4. braecatus Brazil 212 5. nodosus Amazon 213 6. Dohrnii Paramaribo 214 7. nubilus Cayenne 215 8. Cayensis Cayenne 216 9. fulvo-pubescens . . Paramaribo 217 10. bituberculatus . . . Brazil 218 11. artitus Cayenne 219 12. fuscatus Amazon 220 13. bimaculatus .... Amazon 221 14. sex-maculatus . . . Amazon 222 15. binotatus Bahia 222 16. humero-notatus . . Brazil 223 GENERUM DIAGNOSES. 297 Page 17. sex-notatus .... Brazil 224 18. sericeo-pubescens . . Columbia 225 19. transverso-notatus . Amazon 225 Genus 36. Metriotes (pag. 226). Elongata, subdepressa; palpis maxillaribus art. secundo lato et dilatato ; antennia filiformibus, attenuatis ; tborace transverso, rectangulari ; elytris parallelis ; tibiis postieis (ut in genere Monoplato) calcaribus quinque aut sex armatis. 1. Robinsonii .... Rio Janeiro 228 Genus 37. Poebates (pag. 229). Lata, robusta, subcylindrica ; an- tennis brevibus, filiformibus ; thorace transverso ; elytris latis, brevibus, subcylindricis, haud ante medium transverse depressis ; tibiis postieis ad marginationem simplieibus. 1. uigripes Brazil 230 Genus 38. Hypolampsis (pag. 230). Statura brevis ; sat lata, aut subglobosa aut parallela ; tborace transverso (interdum qua- drato) ; elytris brevibus aut elongatis, plerumque ante medium oblique depressis ; tibiis postieis ad marginationem aut simpli- eibus aut sinuatis, rarissime calcaratis. 1. melanotus .... Cbili 233 2. Balii Brazil 234 3. elegantula .... Rio Janeiro 234 4. multicostata . . . . Brazil 235 5. inaequalis Rio Janeiro 236 6. Miersii Paramaribo 237 7. Dolirnii Brazil 238 8. albo-guttata . . . . Brazil 238 9. Murraii Rio Janeiro 239 10. signaticornis . . . Para 240 11. nana Rio Janeiro 241 12. pumilio Rio Janeiro 242 13. ferrugineo-notata . . Brazil 242 14. parallela Brazil 243 15. campestris .... Brazil 243 16. fallax Brazil 244 1 7. nigrina Island of St. Paul .... 245 18. minima Amazon 245 19. atra Island of St. Paul . . . .246 20. fragilis Rio Janeiro 247 21. Lacordairii .... Amazon 248 22. costulata New Granada 249 23. meridionalis .... Brazil 249 24. squamata .... Brazil 250 25. sylvatica Brazil 251 26. regia Amazon 252 27. flavo-notata ... St. Catherine 252 28. vicina Columbia 253 298 CATALOGUS GEOGKAPIUCCS et genertjm diagnoses. 29. Fryella . 30. fusca . . 81. anceps 32. robusta . 33. aestivalis . 34. pilosa, HI 35. porculus . 36. gibba . . 37. suborbicularis Rio Janeiro . . Island of St. Paul Bahia .... Brazil .... Brazil .... Page 254 . 254 . 255 256 . 257 258 . 258 259 . 260 Genus 39. Imatium (pag. 260). Rotundatum, pube dense vesti- tum ; antennis incrassatis ; tibiis rectis, siniplicibus, haud ad marginationem calcaratis. 1. tomentosum . . . Brazil 2('»2 2. rotiindaturn .... Brazil 263 3. velutinum .... Rio Janeiro 264 Genus 40. Sparaus (pag. 265). Rotundatus, suborbicularis, loevi- gatus ; femoribus et tibiis postieis haud elongatis. 1. oflobosus Amazon 266 Genus 41. Cyrton (pag. 267). Robustum, rotundatum, depressum, glabrum, striato-punctatum ; femoribus tibiisque postieis elon- gatis. 1. anisotomoides . . . Amazon 269 2. sanguineum .... Amazon 269 Genus 42. Lithonoma (pag. 271). Lata, subparallela, sat depressa ; tibiis postieis calcare armatis. 1. Africana Tangiers 272 2. cincta, Fab Spain 273 3. Andalusiaca, Ramb. . Spain 276 INDEX. adumbratus, Physim., 84. JEdmon, 129, 293. aestivalis, Hypol., 257. Afrieana, Lithon., 272. Africanus, JEutorn., 65. agilis, Physim., 76. alboguttata, Hypol., 238. Allardi, Physim., 284. Allochroma, 181, 295. amabilis, Phyl., 116. ambiguus, Hi/pan., 98. ambiguus, Physim., 75. amcenus, Cceloceph., 146. anceps, Hypol., 255. Audalusiaca, Lithon., 276. augulatus, Jftonop., 20. angulicollis, Tetray., 59. angulo-fasciatus, Physim., 86. anisotomoides, Cyrtf., 269. Apalotrius, 166, 294. apicalis, Cerich., 197. apicatus, Monop., 10. artitus, Omot., 219. asper, Homot., 125. assimile, AUoch., 191. assimilis, Hypan., 99. assimilis, Rhinot., 42. atra, Hypol., 246. atra, Tetrag., 56. Atyphus, 175, 295. Balii, AUoch., 187. Balii, CericA., 196. Balii, -fiT^o/., 234. balteatum, Pleur., 133. Banoni, Octoy., 162. Batesii, Cerich. , 199. Batesii, Hypan., 100. Batesii, Physim., 89. bicinctus, Octoy., 165. bilineatus, Physim., 88. bimaculatus, Monop., 11. bimaculatus, Omot., 221. binotatus, Octoy., 163. binotatus, Omot., 222. bituberculatus, Omot., 218. bituberculatus, Physim., 87. braccatus, Omot, 212. brevicollis, Physim., 85. brimneus, Octoy., 160. cseruleus, Loxop., 154. calceata, Tetrag., 57. Calipeges, 206, 296. campestris, Hypol., 243. canescens, Rhinot., 52. carbonarius, Atyp., 176, 286. castaneus, Lept., 136. Cayensis, Omot., 216. ceramboides, Loxop., 151. Cerichrestus, 194, 296. Ckevrolatii, Cenc/t., 202. cincta, Lithon., 273. cionoides, Homot., 285. coccineum, AUoch., 184. Ccelocephalus, 144, 294. comes, Atyp., 177, 287. concolor, Hypan., 97. costulata, Hypol, 249. crispus, Calip., 207. croceus, Monop., 11. cruciatus, Rhinot., 38. crucifer, Rhinot., 40. cyaneus, Rhinot., 41. cvanipennis, Rhinot., 46. Cyrton, 267, 298. depressus, Rhinot., 43. Deyrollii, Cen'ck, 198. Devrollii, Hypan., 100. Deyrollii, Rhinot., 49. 300 dilaticornis, Hylod., 143. dimidiatipennis, Monop., 19. distinguendus, Monop., 7. Dobmii, Hypol., 238. Dohrnii, Omok, 214. elegans, Tetrag., 55. elegantula, Hypol., 234. elegantulus, Rhinot, 47. epnippium, Monop., 280. ephippium, Physim., 83. Eupeues, 107, 292. Eui'HENGES, 25, 290. Eutohnus, 64, 291. exaratus, Tiiras., 104. Exartematopus, 169, 295. exiguus, Cerieh., 201. eximius, Tit r us., 103. fallax, £gpal, 244. fasciatum, A/lock, 186. fascicularis, Physim., 80. ferrugineo-notata, Hypol., 242. festivmn, Alloch., 192. flavicans, Cerieh., 204. flavidus, Rhinot., 51. tiaviventris, Atyp., 177. Havo-notata, Hypol., 252. flavo-vittatum, ' Alloch., 188. fragilis, Hypol., 247. Fryella," -Hy/w/., 254. Fryii, Monop., 278. fuliginosus, Homot, 124. fulvo-pubescens, Omot., 217. furcipes, ^4typ., 178. fusca, Hypol., 254. fuscatus, Omot., 220. fusco-costatus, Cocloceph., 148. generosum, Alloch., 194. Gethosynus, 179, 295. gibba, Hypol., 259. Glenidion, 93, 291. globosus, Spam., 266. Grayii, Monop., 8. gi'iseostriatus, Physim., 92. bexagona, Tetrag., 60, 281. bolosericeus, Homot., 126. Homammatus, 116, 292. Homotyphus, 120, 292. bumerale, Alloch., 183. humeralis, Loxop., 153. humero-notatus, Omot, 223. bumilis, Cerieh., 203. humilis, Rhinot., 50. IIydmosyne, 172, 295. Hylodromus, 142. 293. Hypantherus, '.>.">, 292. Hypolampsis, 230, 297. Imatium, 260, 298. impressus, Physim., 71. impunctipeimis, Monop., 21. hneqtialis, Hypol., 236. inclyta, Hycl'm., 174. inconspicuus, Punch., 140. inornatus, Physim., 78. inornatus, Rhinot., 48. irroratus, Physim., 89. jucundus, Monop., 13. juyencus, Physim., 81. labialis, Physim., 74. Lacordairii* Hypol, 248. laeunosus, Homot, 122. lrevigatus, Pm'6., 157, 286. Lemoeides, Enphen., 28. leptocepbalus, Rhinot, 35. Leptotrichus, 135, 293. Lithonoma, 271, 298. Loxoprosopus, 149, 286, 294. lunatum, Alloch., 188. luteicollis, Physim., 77. maculicomis, 'Homot, 127. marginatus, Loxop., 152. marginatus, Rhinot, 37. marginella, Lithon., 273. marginicollis, Cerieh., 204. melanotic, Hypol, 233. meridionalis, Hypol, 249. Metriotes, 22(5, 297. Miersii, Hypol, 237. Miersii, Monop., 9. minima, Hypol, 245. minutus, Physim., 79. modestus, P/////., 112. • Monoplatus, 2, 289. morosus, 0?»oC, 209. midticostata, Hypol, 2:;.-). Mmraii, Hypol', 239. nana, Hypol, 241. nebulosus, Physim., 90. negketus, Rhinot., 280. nigricans, Monop., 17. mgricornis, Rhinot, 52. nifnifrons, Rupee/., 109. nigrimanus, Monop., 18. nigrina, Hypol, 245. nigripes, Monop., 5. nigripes, Poc'6., 230. nigro-marginatum, Alloch., 190. nitidulum, P&w., 134. nitidns, Homam., 119. nobilis, Exart., 170. nodosus, Omot, 213. nubilus, Omot, 215. obscurns, Physim., 80. obscurus, Thras., 105. Octogonotes, 158, 294 :',it| (Edipodes, 1. olivaceus, Phyl, 113. Omototus, 208, 296. Pachyonychis, 61, 290. pallidum, Pleur., 134. pallipes, Rhinot., 50. Panchrestus, 137, 293. paradoxus, Pachyon., 63. parallela, Hypol., 243. Peribleptus, 155, 294. Ph.edromus, 66, 291. PlIYEACTICUS, 110, 292. Physapodes, 1. Physimerus, 69, 291. Physonychis, 29, 290. piceum, Alloch., 186. pilosa, Hypol., 258. Pleurochroma, 131, 293. Poebates, 228, 297. pollinosus, Phyl., 115. porculus, Hypol., 258. porcidus, (Edionychis, 287. praeclara, Eupeg., 108. prasimis, Phyl., 115. Presidencioe, Monop., 6. pruinosus, Physim., 91. pubescens, Apalot., 168. pulchellus, Caeloceph., 145. pulcher, Panch., 139. pumilio, Hypol., 242. pygmaeus, C'oeloceph., 147. quadripes, Oniot., 210. quatuor-lineatus, Physim., 72. quatuor-notatus, Monop., 14, 279. quatuor-pustulatimi, Alloch., 191. regia, Hypol., 252. revisus, Physim., 77. Rhinotmetus, 33, 290. Robiusonii, Metriot., 228. robusta, Hypol., 256. Roicus, 22, 289. rotun datum, Imat, 263. rubicundus, Punch., 139. rubronotatum, Glen., 95. rufesceus, Panch., 141. ruficollis, Rhinot, 45. rufo-testaceus, Hypan., 101. rusticus, Physim., 283. sanguineum, (7?/r^., 269. sanguiuicollis, Gethos., 180. scabrosa, Eupeg., 109. Scutellaria, Exart.. 171. semicbalybeus, Monop., 15. semiviolaceus, Monop., 17. sericellum, JEdm., 131. sericeo-pubescens, Omot., 225. sericeus, Euphcn., 27. sericeus, (Edionychis, 287. sex-maculatum, Alloch., 185. sex-maculatus, Omot, 222. sex-maculatus, Roicits, 24. sex-uotatus, Omot., 224. sex-siguatum, Alloch., 193. sex-signatus, Monop., 14. signaticoniis, Hypol, 240. smaragdina, Phi/son., 29. Sparnus, 265, 298. spectabilis, Rhinot,, 39. squalidus, Homot., 126. squamata, Hypol., 250. subanchoralis, Tetrag., 58. suboculatus, Physim., 83. suboibicularis, Hypol., 260. sulcicollis, Rhinot., 47. sumptuosus, Octog., 164. sylvatica, Hypol, 251. tenuicornis, Cerich., 200. Tetragonotes, 53, 290. thoracicus, Octog., 161. Thrasygoeus, i02, 292. tomentosum, Imat., 262. transverso-notatus, Omot., 225. trivialis, Physim., 81. tuberculatus, Omot., 211. turgidus, Homam., 118. undatus, Thras., 106. ustulatus, Phyl., 113. Vellereus, Homot, 123. velutinum, Imat, 264. venustum, Alloch., 189. vicina, Hypol., 253. virgatus, Physim., 73. viridis, (Edionychis, 288. vittata, Tetrag., 59. vittatus, Physim., 72. vulgaris, Physim., 282. Waterhousii, P/t^d., 68. Waterhousii, Rhinot, 44. Wollastonii, Homot, 128. the end. EXPLANATION OF FRONTISPIECE. Page Fig. I. Mostoplatus Grayii ° m. MaxiUary palpus. k. Front view of head. n. Labial palpus. Fig. 2. MoNOPLATTJS QTXATXTOR-NOTATTTS 14 b. Anterior femur and tibia. m. Maxillary palpus. d. Anterior tarsus. n. Labial palpus. e. Anterior claw. Fig. 3. Rhinotmetus marginatus 37 m. MaxiUary palpus. k. Front view of head. n. Labial palpus. Fig. 4. Rhenotmettjs crttciattjs 38 f. Posterior femur and tibia. m. Maxillary palpus. 'h. Posterior tarsus. n. Labial palpus. i. Posterior claw. Fig. 5. Rhinotmetus depresses 43 b. Anterior femur and tibia. m. Maxillary palpus. d. Anterior tarsus. ». Labial palpus. e. Anterior claw. Fig. 6. Homotyphus lactjnostjs 122 m. MaxiUary palpus. s r. Side view of body. n. Labial palpus. Fig. 7. Poebates nigripes 230 d. Anterior tarsus m. Maxillary palpus. /. Posterior femur and tibia. n. Labial palpus. h. Posterior tarsus. Fig. 8. Imatitjm velutinttm 264 d. Anterior tarsus. m. MaxiUary palpus. f. Posterior femur and tibia. n. Labial palpus. h. Posterior tarsus. EXPLANATION OF PLATE I. Page Fig1. 1 . MONOPLATUS NIGRIPES 5 f. Posterior femur. Fig. 2. MONOPLATUS DISTINGTJENDUS 7 h. Posterior tarsus. i. Posterior claw. Fig. 3. MONOPLATUS BIMACULATUS 11 g. Posterior tibia. Fig. 4. MOKOPLATUS SEXSIGNATTIS 14 Fig. 5. lloicus SEXMACULATUS . . 24 d. Anterior tarsus. i. Posterior tarsus. e. Anterior claw. m. Maxillary palpus. /. Posterior femur and tibia. n. Labial palpus. Fig. 6. Euphenges sericeus 27 Fig. 7. Euphenges Lemoeides 28 d. Anterior tarsus. m. Maxillary palpus. g. Posterior tibia. n. Labial palpus. Fig. 8. Phtsontchis smaragdijsta 31 a. Antennae. m. Maxillary palpus. g. Posterior tibia. M&vl.SK) «6f i a: x> EXPLANATION OF PLATE IL Fig. I. Hhinotmetus spectabilis ....... Fig. 2. EnraoTMETUs ctaxees ........ Fig. 3. Tetragonotes elegans ........ m. Maxillary palpus. n. Labial palpus. Fig. 4. Tetragouotes angttlicollis ...... (I. Anterior tarsus. 53. Is. Catalogue of Neuropterous Insects. By Dr. Hagen. Part 1. Termitina. 12mo. 1858. Gd. Catalogue of Hispid*. By J. 8. Baly, M.E.S. 8vo. 1858. Gs. With Plates. Catalogue of Hemipterous Insects. By W S.Dallas,F.L.S.&c. With Plates, Part 1. 12mo. 1851. 7s. Part 2. 1852. 4s. The Catalogues of Ilymenopterous, Dipterous Homopterous and Hemipterous Insects contain the description of the species in the Museum which appeared to be undesenbed. Catalogue of British Bruchidae, Curculionidae, &c. By John Walton, F.L.S. 12mo. 1856. Catalogue of Cassididrc. By Professor Boheman. 12mo. 1856. 3s. Catalogue of Coleopterous Insects of Madeira. By T. V. Wol- laston, F.L.S. Svo. 1857. 3s. 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