v-r TRANSACTIONS JL3^EI2/IO-A-nsr ENTOMOLOGICAL SOCIETY, I'iR.OCEEIDIlSrOS ENTOMOLOGICAL SECTION ACADEMY OF NATURAL SCIENCES. YOL. vn. PHILADELPHIA. PRINTED BY THE SOCIETY. 1878—9. SWf T?ft LIST OF PAPERS. Page Blake, Charles A. Catalogue of the Mutillidae of North America, with de- scriptions of new species. ----- 248 Cresson, E. T. Descriptions of new North American Hymenoptera in the collection of the Am. Ent. Society. - 61, 201, 255 Catalogue of North American x\pidae. . - . 215 Horn, Gteorge H., M. D. Notes on some species of Hister. - - . - 1 Revision of the species of Acmgeodera of the United States. 2 Descriptions of the larvae of the North American genera of Cicindelidae, also of Dicaelus, with a note on Rhyn- chophorus. --------28 Notes on some genera of Cerambycidae of the United States. -.-.---. 41 Contributions to the Coleopterology of the United States, No. 2. - - - -^ ... - 51 Revision of the species of Listrochelus of the United States. ...----. 137 Synopsis of the Quediini of the United States. - - 149 Synopsis of the species of Cychrus inhabiting Boreal America. -.----.- 168 Synopsis of the species of Staphylinus and the more closely allied genera inhabiting the United States. - - 185 Synopsis of the Monotomidae of the United States. - 257 Revision of the Nitidulidae of the United States. - 267 Notes on the Mycteridae and other Heteromera. - 336 Norton, Edward. On the Chrysides of North x\merica. - - . 233 *0F THE AMERICAN ENTOMOLOGICAL SOCIETY. FOLHME VII. Bfotes on some species of HISTER. BY GEORGE H. HORN, M. D. In the synopsis of the species of Hister of our fauna published by me (Proe. Am. Philos. Soc. 1873, p. 280), the arrangement is very nearly that adopted by Marseul, except that the truncation of the mesosternum enters as an important factor. There was observed at the time (p. 292), a tendency in several species in which the meso- sternum was emarginate to have the emargination become so feeble as to cause the character to lose a portion of its value. In a review of the species made while comparing some unnamed specimens it seemed that sufficient importance had not been given to the striation of the presternum, a character casually mentioned by Marseul but not other- wise made use of. A modification of the table (synopsis p. 280), introducing this char- acter seems to give a much better arrangement of the species, at the same time rendering the transition between the normal Histers and Phelister less abrupt. In the latter group all the species have a striate prosternum. The following is in short the change proposed: Prosterniim convex, without striae. Mesosternum emarginate Groups 1 — 7. Mesosternum truncate Groups 8 — 9. Prosternum more or less flattened, bistriate. Mesosternum very feebly emarginate Group servus. Group — servus. Prosternum more or less flattened and bistriate, anterior tibige tri- dentate, the apical tooth bifid. (Elytra with four entire striae and no subhumeral). The species are as follows: Outer thoracic stria entire. Pygidium coarsely and densely punctured servuS. Pygidium finely and sparsely punctured indistincttis. Outer thoracic stria very short deiectus. TRANS. AMER. ENT. SOC. VII. (1) JANUARY, 1878. 2 • GEO. H. HORN, M. D. The strife which are characteristic of this group extend from the tip of the prosternum to the beginning of the lobe, and are divergent at each end, more so posteriorly. In the first two species the striae are hooked at the anterior end and their tips thus approach, in dcfectus they are divergent and not hooked. H. servus, Er.— West Indies, Maryland, Arizona. H. indistinctus, Say,— N. C, Ga., N. M, H. defectus, Jjec— Mass., S. C, Ga. I have in my cabinet a specimen with the last two dorsal segments coarsely and densely punctured as in servus but with the outer thoracic stria short as in defectus. I do not care to give this a name until other specimens appear when it may possibly be 'necessary to unite those already named instead of describing new species. Revision of tlie species of ACM.KODERA of the lJnite«l States. BY GEORGE H. HORN, M. D. The number of new species which have accumulated in our collec- tions since the latest synopsis (Leconte, Trans. Am. Philos. Soc. 1859), has nearly equalled the nuuiber then known and of these fourteen have remained to the present time unnamed. While feeling the neces- sity of having these described I have until now been deterred from attempting any arrangement of our entire series by tlie remarks of Mr. Crotch (Proc. Acad. 1873, p. 89), as follows : " but I am entirely unable to discover any characters except the variable ones of color, sculpture and form ; so that the limits of species appear to be merely opinionative." Possibly the following pages may show quite to the contrary. As there is considerable structural variation the difi"erent members of the body will be reviewed. The head is always punctured, the front either impressed or convex and the vertex usually finely carinate, either deeply inserted with the eyes partly concealed by the angles of the thorax, or with the eyes free. The thorax is very variable. When viewed from abtive the apex may be emarginate as in the sinuate and enianjinatse or truncate as in the fnmcatse; sometimes the middle of the anterior margin is slightly prolonged. The sides vary in form from strongly arcuate to nearly straight, and the margin may be broad and distinctly reflexed or very narrow, often entirely invisible from above or even nearly AMERICAN COLEOPTERA. 6 entirely obliterated {gemma). The upper side has, in a general way a similarity of sculpture. There is a broad triangular impression at middle and an oblique impression on each side terminating in a fovea at base, in all tbose species with u depressed thorax. In the convex species these impressions are reduced so that there are merely three basal foveae. In width there is also considerable diversity, a moderate number have the tborax wider than the elytra, in others the sides are regularly and gradually arcuate from tip to base. The prosternum exhibits remarkable differences. The simplest form is that in which the apex of thorax is almost squarely truncate so that the margin above and beneath is continuous, the angles of the pro- sternum being prolonged so as to touch the angles of the thorax. The next form is that in which the angles of the thorax are produced partly concealing the eyes, the thorax above emarginate and the alae or angles of prosternum not attaiiiing the angles. The form naturally following this has a similar form but the edge of the prosternum is trisinuate, the middle portion, immediately behind the head broadly emarginate and limited on each side by a tooth of variable promi- nence. Another modification results from the presence of a lobe at the middle of the prosternum of moderate extent, emarginate and angulate, external to which the prosternum is slightly notched the alae however attaining the angles of the thorax. The elytra are variable in form to a moderate degree and may be depressed or not, the surface is marked with striae of punctures also variable, the intervals in several species subcostiform. The base is truncate, except in (jibhida in which the middle is slightly arcuate forward and the humeral angles prolonged, slightly clasping the base of the thorax. The abdomen varies in punctuation, usually the punctures are sparsely placed, equally over the entire surface. In pubiventris and comata however the sides are more densely punctured and the pubes- cence also denser and longer. In ecies, surface with sparse, erect, moderately li>ng brownish hair. Head densely punctured, front feebly im- pressed, vertex with fine carina Thorax more than twice as wide as long, apex feebly emarginate very slightly prolonged at middle, base trunc^ate, sides moderately arcuate and gradually wider to base which is not broader than tlie elytra, disc with median linear impression and vaguely concave at base, on each side at base a moderately deep fovea, surface uniform in color, rather sparsely punctured at middle and more densely at the sides. Elytra twice as long as wide, umbone feeble, sides nearly parallel and at apical third rapidly narrowing to tip, feebly serrate; disc very feebly depressed, striae at middle less evident, punctured, intervals with a single series of finer ]Hinctures; sur- face copi)ery bronze shining maculate with red as follows; a small basal spot, a spot at basal third another external near the tnargin, a median short fascia, another at apical third also a small subapieal spot at margin. Body beneath coppery bronze, sparsely pubescent. Prosternum trisinuate in front, at middle and sides coarsely punctured. Abdomen rather finely and moderately densely punctured. Last ventral with distinct double apical margin. Length .44 inch ; 11 mm. Two specimens before me from the Mariposa region of California. J)r. Leconte's specimen was obtained Irom the cabinet of Count Mnizech of Paris with the above manuscript nanie. I do not know that it has ever been published. My specimen is due to the late Jules Thevenet of Paris and was collected by his brother in 3Jari- posa County, California. A. miliaria, n. sp.— (PI. I, fig. 9.) Form moderately robust, subdepressed, color black tinged with bronze, surface sparsely clothed with erect black hair, elytra with numerous small yellow spots, forming two narrow transverse bands near the tip which are reddish at the margin. Head coarsely punctured, front slightly impressed, vertex with feeble carina. Thorax unicolored, twice as wide as long, apex feebly emarginate, base truncate, sides moderately arcuate in front, nearly straight posteriorly, margin narrow, scarcely visible from above AMERICAN COLEOPTERA. 11 except in front and becoming much inferior posteriorly ; disc with feeble median triangular irn|iression, on each side a moderately deep fovea; surface coarsely and moderately densely punctured, slightly less densely at middle. Elytra as wi. A. COnsors, n. sp.— (PI. I, fig. 30.) Form moderately robust, surface aeneous, and with very sparsely placed erect brownish hairs. Head coarsely and densely punctured, front impressed, vertex with distinct carina. Thorax twice as wide as long, unioolored, a|)ex and base truncate, sides arcuate broadest at middle, margin moderstte. slightly reflexed, . Isevirasciatiis n. sp. — Aeneous, shining. Clypeus deeply emarginate, on each side dentate, sides of front lobed, lobes carinate, front transversely broadly impressed. Thorax globose, median line deeply impressed posteriorly. Elytra very deeply striate, strise at base obsolete, at apex deeply impressed, obsoletely punctured and broadly interrupted by two arcuate transverse spaces through which the striae are continued by very fine punctures, sutural and marginal striae entire, basal stria obsolete; third interval with three distinct punctures. Legs and basal joint of antennae pale rufous, hind tibise rather more arcuate than usual. Anterior tibiae bidentate externally, the upper tooth feeble, terminal spur long and moderately arcuate. Length .12 inch; 3 mm. The appearance of this species with the unusually deep striae twice broadly interrupted is very peculiar and seemed to me at first a deformity. Its characters, otherwise, define the position it should occupy in the series which is near consobrinus Lee The transverse impression of the front although broad is feeble and the striae at base are obliterated, at apex deeply impressed, and the basal stria entirely wanting; these characters place it with the species mentioned rather than with seneolus, etc. I have seen three specimens exactly alike received from Oregon by Mr. H. Ulke. one of them being now in my cabinet through his kindness. AMERICAN COLEOPTERA. 53 ANCHOIVODERUS Reiche. A, quadrinotatus n. sp. — Piceous, sparsely pubescent, legs, palpi and antennae at base testaceous, elytra each with two reddish spots, one subhumeral, the other subapical and larger. Head moderately shining, front slightly longi- tudinally impressed on each side, vertex and occiput sparsely punctured. Antennae piceous at base, brownish externally. Thorax cordiform, not wider than the head, as wide as long, base narrower than apex, sides in front moder- ately arcuate, gradually narrowing to base and feebly sinuate in front of hind angles which are rectangular but not prominent, median line finely impressed, surface sparsely punctured, sparsely clothed with short, erect, yellowish pubes- cence. Elytra oval, sides feebly arcuate, surface striate, striae serrately punc- tured, intervals slightly convex S[)arsely punctulate and pubescent, piceous and with two rufous spots, one near the humeri small, another near the tip, larger and round. Body beneath piceous sparsely pubescent. Prothoracic side pieces nearly smooth, abdomen moderately densely punctured. Length .28 inch ; 7 mm. Two specituens from Texas. Anchonitihruii differs from Lachnophorus in the form of the palpi which have the terminal joiut feebly fusiform ia the first and ovoid terminating in an acute point in the latter genus. The anterior tarsi of male have three joints feebly dilated. COTAIiPA Burm. C flaTida n. sp. — Body beneath and tarsi piceous black, upper surface legs and pygidium pale yellow. Clypeus transverse, slightly narrower in front, apex feeldy arcuate, angles broadly rounded. Front and clypeus moderately densely but finely rugulose. Thorax very sparsely punctured on the disc, moderately densely and finely ruguloso-punctate at the sides. Elytra sculp- tured as in lanigera, distinctly subangulate at the sides, more strongly in the 9 which has also a distinct tubercle at the angulation. Pygidium yellowish, finely scabrous, smoother in the male. Legs yellowish tarsi pitchy black, body beneath sparsely pubescent, less densely than in lanigera. Length .90 — 1.00 inch ; 23 — 25 mm. This species is closely allied to lam'yera, which it resembles in form and color although without any of the metallic lustre of surface. It very distinctly differs in the thorax being rugulose at the sides, the clypeus more narrowed in front and the under side of body and tarsi pitchy black and the surface much less pubescent. The under sur- face is very much less distinctly punctured. The greatest describabie difference is between the females. In the present species the elytra are very distinctly subangulate in front of middle and a well marked tubercle in the angulation. There is scarcely any trace of either angulation or tubercle in lanijera. I have examined about twenty specimens of this species collected at St. George, Utah, by Dr. Edw. Palmer. 54 GEO. H. HORN, M. D. CRYPTOSTOMA Latr. C Dohrni n. sp.— Oblong, moderately elongate, subparallel, equally obtuse at each end, color pale sanguineous, sides of body and elytra black, the latter with a humeral spot and apex sanguineous, surface clothed with fine recumbent pubescence the color of the surface. Antennse piceous, basal joint sanguineous Head densely punctured, clypeus more sparsely. Thorax one-fourth wider than long, sides moderately arcuate and gradually narrowed at apical third, hind angles slightly prolonged posteriorly; disc convex, a slight depression within each hind angle, a median flattening near the base and a very feeble, short, oblique impression on each side of middle near the apex; surface sanguineous, densely punctured and pubescent. Elytra oblong, slightly broader behind the middle, striate, strise punctured, intervals flat, convex at base, densely punctulate, color black, subopaque, humeri and apex sanguineous, surface modeiately densely clothed with recumbent pubescence, black on the disc red on the humeral and apical spaces. Body beneath densely punctured and sparselj' pubescent; abdomen more finely and densely punctured; color pale sanguineous metasternum and abdomen at the sides black. Length .60 inch; 15 mm. I have seen but one female of this very beautiful Eucnemide which I owe to the great liberality of Dr. Dohrn of Stettin, by whom it was sent with the assurance that it came from San Diego, California, in a bottle of alcoholic specimens all the other speci- mens being truly native to that locality. The bottle came from Mr. Jas. Behrens. This species diifers notably in size and color from those de- scribed by Bonvouloir, all of which come from tropical South America. Cryptostoma has no antennal grooves. Epistoma narrowed at base, rounded in front. Thorax with a single marginal line and the pleurae triangular. The coxal plates are moderately dilated internally but not suddenly. '1 he tarsi are slender and simple. The metasternal epimera are concealed. The antennae of the two sexes differ in form and length, those of the male being longer than half the body, the third joint with a hook-like process at its base, the outer joints moderately long. The female antennae attain the hind angles of the thorax and are stouter but not dentate; third joint simple slightly obconical, fourth slightly longer than the second and very little shorter than the fifth; joints 5 — 8 subequal slightly wider to the tip; ninth distinctly longer than the eighth; tenth somewhat shorter ; eleventh still shorter and trun- cate at tip. In an arrangement of our genera Cryptostoma must be placed near SMzopliilus. AWraiRICAN COLEOPTERA. 55 TYPOCERrS Lee. T. balteatus n. sp. — Head and thorax black. Thorax coarsely and densely punctured, disc very convex, sparsely pubescent, apex constricted, base deeply impressed, both with fine golden pubescence, sides feebly arcuate except in front. Elytra gradually attenuate to apex which is obliquely truncate, the angles not acute, sparsely punctured and pubescent, surface shining, bright yellow with three narrow black bands interrupted at the suture. Body beneath piceous, sparsely punctured and pubescent. Length .44 inch; 11 mm. Male. — Antennte as long as three-fourths of the bodj', black, externally subserrate, eleventh joint appendiculate, joints 6 — 11 with elongate flattened poriferous spaces occupying nearly the entire length of the joint, the last Joint with a space on appendix also. Legs bright yellow, tarsi piceous, posterior tibiae and tarsi tipped with piceous. Female. — Antennae not longer than half the body, external joints stouter, eleventh not appendiculate, joints 1 — 5 bright yellow, 6 — 11 black and with small poriferous spaces at the base of each joint, the eleventh with two without trace of appendicular joint. Legs and tarsi yellow. This species luay be known by the bright yellow elytra with the three narrow black bands and the surface very sparsely punctured. It should be placed near (jnmnicontis Lee. Occurs in Colorado (Morrison), Arizona (Fuller). NOSERVS Lee. N. emarginatiis n. sp. — Semicylindrical, moderately elongate, opaque, surface with the usual dark brown indument. Head deeply concave, the supra- antennal margin strongly elevated. Thorax oval, longer than wide, gradually arcuately narrowed to base, the latter broadly lobed at middle, anterior angles obtusely prolonged, disc elevated at middle and with two slightly elevated ridges which are approximated at middle, divergent slightly at either end, each terminating in front in a tubercle more prominent in front than the rest of the margin; on each side of these ridges a shorter sigmoid elevation. Elytra oblong, semicylindrical, base emarginate, humeri obtusely rounded, disc with tfvo rows of small tubercles, velvety at their summits, the inner row longer terminating in a moderately prominent tubercle, near the tip rather suddenly declivous, tip slightly prolonged and emarginate at the suture. Body beneath brownish opaque. Second and third segments of abdomen concave at middle, fourth impressed posteriorly, fifth with a reniform impression. Legs sparsely granular and with short setae. Antennse perfoliate, the last joint (which is com- posed of the connate tenth and eleventh), truncate at tip and placed obliquely on the ninth. Length .62 inch; 16 mm. The antennal aroove which is very feebly defined in N. plicatus is even less distinct here. All the tubercles and ridges of the surface have short black setae which might readily escape notice. The eiuargination of the tip of the elytra is unique among our Nosodermoids, there is however a species in Cuba similarly marked (N. echinatum ?). One specimen collected near San Antonio, Texas, by Mr. H. A. Brous. 56 GEO. H. HORN, M. D. MICROSCHATIA Sol. M. morafa. n. sp. — Oval, opaque. Head vaguely punctured, each punc- ture with a small pale scale. Thorax one-half wider than long, slightly broader at base than apex, sides feebly arcuate, margin not reflexed, disc regularly convex, not gibbous, moderately densely but rather vaguely punctured, each puncture with a small pale scale, and with small elevated smooth spaces irregularly placed near the middle of the disc. Elytra not wider at base than the thorax, one-fourth longer than wide, disc convex and with three feeble costse on each at base which become resolved into feeble anastomosing reticulations. Body beneath coarsely but not densely punctured. Length .48 inch ; 12 mm. In this form as in suln'pennis the thorax is not gibbous and is entirely devoid of the basal impressions so well marked in the other two species. The three costse are very short and extend about one- third from the base and become confused and form feebly elevated anastomosing reticulations. It resembles in form and size Asida polita less the thoracic margin of the latter. One specimen from Grant Co., New Mexico, given me by Mr. Carl F. Gissler. ASIDA Latr. A. mancipata n. sp. — Form of A. opaca. Head and thorax opaque, elytra more sinning. Head sparsely and rather finely punctured and with a few scales. Thorax broader than long, apex slightly narrower than base and emarginate, sides moderately arcuate, in front of angles sinuate, angles acute and moder- ately prominent, margin moderately reflexed, disc feebly convex coarsely and rather densely punctured and opaque. Elytra oval, more rapidly narrowed at apical third, slightly broader at base than the thorax, margin acute and slightly reflexed at the humeri which are moderately prominent, disc feebly convex and with three irregular, feebly elevated costsB united by intervening reticulations. Body beneath feebly shining, finely rugulose and subpunctate. Length .52 — .64 inch; 1.3—16 mm. This species has the form of opaca and an elytral sculpture re- sembling sordida. The male is more slender than the female and the disc of the elytra feebly convex, the female is stouter, the elytra more convex but depressed along the suture. Its position in the series is after opaca. Two specimens, Grant Co., New Mexico, kindly given me by Mr. Carl F. Gissler. A. acerba n. sp. — Form of hirsuta, brownish, subopaque, surface sparsely clothed with very short erect pubescence, yellowish on the head, brownish elsewhere. Head sparsely punctate. Thorax one-third broader than long, apex as wide as base and feebly emarginate, sides very regularly arcuate, margin feebly reflexed, hind angles obtusely rounded, base truncate, disc feebly convex, sparsely and very regularly punctured at middle, more densely at the sides. Elytra oblong oval, humeri broadly rounded, apex feebly attenuate, sidea rounded without margin, disc regularly convex, subopaque, sparsely and AMERICAN COLEOPTERA. 57 very finely punctate. Body beneath subopaque, sparsely and finely punc- tate. Anterior tibiae denticulate on the outer margin. Leugth .48 inch; 12 mm. This species by the form of the thorax and the rounded humeri is related to hirsuta and hhpidula from both of. which it differs in its anterior tibiae being denticulate. A. hirsuta has a more convex and shining thorax, the margins broadly reflexed and the entire surface sparsely clothed with long yellow hair ; hispidula has scarcely any reflexion of the margin but its hind angles are subacute. One specimen from St. George, Utah, collected by Dr. Edw. Palmer. HELOPS Fab. H. viridiniicans n. sp. — Piceous, surface brilliant metallic green. Species alate. Head sparsely punctate. Antennae somewhat longer than the head and thorax, rather slender, outer joints broader, last joint oboval slightly longer than the preceding. Thorax nearly twice as wide as long, apex slightly narrower than the base and rather deeply emarginate, anterior angles obtuse, sides feebly arcuate, slightly sinuate in front of the hind angles which are rectangular, base feebly bisinuate; surface sparsely punctulate and with an arcuate impression in front of base; beneath, prosternum at middle densely punctured, at sides longitudinally strigose, inflexed portion of pronotum sparsely punctulate. Elytra oval, humeri distinct, surface striate, striae finely punctured, intervals flat, finely punctulate. Body beneath bronzed, moderately punctulate. Length .32 inch; 8 mm. This species belongs with the series allied to micans, from all of which it differs by more transverse thorax and the sculpture of the prosternum. One specimen from Tampa, Florida, given me by Mr. F. G. Sehaupp. H. ciiflicili!^ n. sp. — Moderately elongate black, semiopaque, body apterous. Head densely punctured. Antennae longer than half the body, slender, last joint slightly longer than the preceding. Thorax slightly broader than long, base very little broader than apex, sides moderately arcuate, margin very feeble, base and apex truncate, hind angles subrectangtilar not prominent, disc convex, coarsely and densely punctured. Elytra elongate oval, convex, surface with faint traces of striae and very densely punctured, punctures finer than those of the thorax. Body beneath densely punctured. Length .46 inch; 11.5 mm. This species being apterous must be placed in the second group of the genus in accordance with the table published in the Trans. Am. Phil. Soc. 1870, p. o92, differing from all the species in that group by the surface sculpture which resembles that of opacus, some of the forms of which are winged while others are apterous. As compared with this latter species the present is more elongate, thorax more convex and less margined and with the hind angles not flattened and not distinctly rectangular. Occurs in the mountainous regions of western Colorado. TRANS. AMER. ENT. SCO. VII. (8) JANUARY, 1878. 58 GEO. H. HORN, M. D. MACROBASIS Lee. in. linearis Lee, Journ. Acad. 1858, p. 23. Male. — First joint of anteunse rather longer than the head, gradually broader to the tip and very feebly arcuate at base, second joint slightly longer than a fourth of the first and as long as the third and fourth joints together; joints 3 — 11 equal in length, gradually more slender to tip. Anterior tibiae with a single terminal spur. First joint of anterior tarsus shorter and broader than the second, concave and smooth on its inner face. The first two joints of the antennae have a shallow but well defined broad groove, pubescent at bottom, along the anterior edge. This character does not appear in any other species. Female. — First joint of antennae shorter than half the head, second rather more than half the first and but little longer than the third; joints .3 — 11 equal in length, gradually more slender to tip. Anferior tibiae with two terminal spurs; first joint of tarsus longer than the second and normal in form. This species was originally described from a female in bad condition collected by Capt. Pope on the Llano Estacado, recently .Mr. H. A. Brous has found several in the neighborhood of San Antonio, Texas, and from these the description above has been made. The original description may be amended as follovi's : Slender, piceous, moderately densely clothed with cinereous pubescence. Elytra pale luteous, a darker spot on each side of scutellum, another in front of humeri. Legs luteous, upper side of anterior femora, knees and tarsi darker. Length .44 — .70 inch; 11 — 18 mm. M. Oissleri n. sp. — Slender, black, sparsely clothed with fine, short cinereous pubescence, forming a denser line along the entire margin and suture. Head oval, moderately densely punctulate, a smooth medial line and space in front of each eye, thorax very little longer than wide, sides parallel, suddenly narrowed in front, surface moderately densely punctured, a moder- ately impressed median line and vague fovea on each side of disc. Elytra sub- opaque, very indistinctly punctulate. Length .34 inch : 8.5 mm. Male. — First joint of antennae stout, feebly compressed, half the length of the head, second joint half the length of first and a little shorter than the third, the latter slightly longer than the fourth, joints 4 — 11 equal, gradually more slender and very feebly compressed. Anterior tibiae curved, convex forward, with one terminal spur. First joint of anterior tarsus much shorter than the second, its inner apical angle obtusely prolonged and inner face smooth and concave. Female. — Anterior tibiae with two terminal spurs, the first joint of the tarsus longer than the second. Antennae scarcely diS'ering from the male. This species was given me by Mr. Carl F. Gissler, who accurately observed its peculiar characters before he sent it. Occurs in Grant Co., New Mexico. With this form the differences between Macrohasis and Ej)icauta seem to disappear. I place the species in the former genus because the second joint of the antennae remains large while in all our species AMERICAN COLEOPTERA. 59 of Epicauta the second joint is very small compared with the third. In any future review of the genera of Meloidae it would be better to restrict the name Macrohads to those species in which the second joint of the antennas is decidedly longer than the third or the an- tennse dissimilar in the sexes. This would exclude from Macrobasis, iminaculata, segmentata and Gissleri. Retaining for the present the genera as constituted, the two pre- ceding species require a slight modification of the table of Macrobasis as given by me (Proc. Am. Phil. Soc. 1873, pp. 88—89). M. linearis having the first joint of the % antennae as long as the next four together, while the second is as long as the third and fourth together, must be placed in A, near toi-sa from which it may be sepa- rated in the table by the absence of contortion at the tip of the first joint and by the first and second joints sulcate. It must be placed between viiyulata and torsa. 31. Gisslei-i fiills in B, and is easily known by its small size and sexual characters and the second joint of the antennae rather shorter than the third. CALOSPASTA Lee. C moesta n. sp. — Elongate, black, shining, glabrous. Head sparsely punc- tured. Antennae attaining the middle of the thorax, gradually stouter toward the tip. Thorax a little longer than wide, sides at basal half parallel, apical half gradually convergent to the front, surface very sparsely punctate. Elytra nearly twice as wide at base as thorax slightly wider toward the tip, surface finely scabrous and with two feeble lines extending nearly to tip. Body be- neath and legs black, shining and with very short black pubescence. Spurs of hind tibiae dissimilar, the inner slender and acute, the outer stout, cylindrical and obliquely truncate at tip. Length .64 — -.90 inch ; 16 — 23 mm. This Species resembles Canthai-is lugens in its superficial characters and might readily be confounded with it. The claws are however as in Calospasta, the lower portion being here very much shorter than the upper and connate with it. Two specimens, California, probably from the southern portion. C Fuller! n. sp. — Black, ojiaque, surface sparsely nigro-pubescent, form rather robust. Head opaque, scabrous. Thorax as wide as the head but smaller in size, one-half wider than long, sides posteriorly slightly convergent, ajiex suddenly narrowed, surface opaque, sparsely punctate. Elytra nearly twice as wide as thorax, slightly wider posteriorly, surface opaque, scabrous, and with very short, indistinct, black pubescence. Body beneath and legs black and shining, sparsely pubescent. Spurs of hind tibiae slender and acute. Antennae longer than head and thorax. Length .38 inch; 9.5 mm. This insect resembles some of the entirely black varieties of Can- iharis stygica. 60 GEO. H. HORN, M. D. One specimen from California, kindly given me by Mr. A. S. Fuller. The species of this genus are rather heterogeneous in size and aspect and having become moderately numerous require a table giving in short their characters. They group themselves in the following manner : Spurs of hind tibise slender and similar 1. Spurs dissimilar, the inner slender, the outer cylindrical truncate 2. 1. — Elytra scabrous. Thorax longer than wide, elytra bluish ornate with yellow. Elytra with a broad yellow vitta on each; surface subopaque. elegans. Elytra with three broad yellow bands interrupted at suture, surface more shining, less coarsely scabrous perpulclira.. Thorax wider than long, color black, subopaque Fnlleri. Elytra quadricostate, color yellow with a brown post-median band and four basal and some apical spots of brown luirabilis. 2. — Body above entirely black mflesta. Body black, thorax red nemognathoides. The first two species are very variable in color. C. elegans, Lee. [Epic.) Ann. Lye. v, 161; {Lytta) Proc. Acad. 1853,341; {Calosp.) Class. Col. N. A. p. 273. var. humeralis, Horn, Trans. Am. Ent. Soc. 1870, p. 93. C. perpulchra, Horn, loc. cit. p. 92. C. Fulleri, n. sp. C. mirabilis, Horn, loc. cit. p. 93. C. mcesta, n. sp. C. nemognatlioideB, Horn, loc. cit. p. 92. AMERICAN HYMENOPTERA. 61 Descriptions of new North American HYIIEIVOPTEBA in the collection of the American Entomological Society. BY E. T. CRESSON. Family APID^. Panurgus chalybaeus. — 9. — Steel-blue, sometimes tinged with dark green; head and thorax opaque, very densely punctured, clothed with long whitish pubescence, mixed with black on the face; head wider than thorax, anterior orbits broadly black, subdepressed and silvery-sericeous in certain lights; face very broad; mandibles reddish at tips; scape of antennae densely clothed with black pubescence, flagellum sometimes testaceous beneath; meta- thorax truncated posteriorly, uniformly and densely' punctured ; tegulse shining black; wings hyaline, faintly dusky at tips; marginal cell pointed at tip, second submarginal cell nearly as long as the first submarginal cell, receiving the first recurrent nervure about one-fourth from the base and the second about one- fifth from the tip; legs black, clothed with long whitish pubescence; abdomen elongate-ovate, depressed, shining steel-blue, densely and minutely punctured, clothed with appressed pale glittering pubescence longer on the sides and more conspicuous on the apical margins of the segments, apex fimbriated with long pale pubescence; venter tinged with brown, the segments fringed at apex with long pale hairs. Length .40 — ^.50 inch. % . — Smaller, more pubescent, the face with only a few black hairs on lateral margin; antennae longer, scape with whitish pubescence; abdomen with erect pubescence longer at base. Length .30 — .40 inch. Hab. — California, (Henry Edwards). Seven specimens. Easily distinguished from all other species known to me by the steel-blue color of the body. This as well as all the following species described under this genus, have the mai-ginal cell long and pointed at apex. Panurgus maurus. — J. — Entirely deep black, shining, feebly punc- tured, clothed with a short sparse black pubescence, longer and more dense on face and cheeks; head rather wider than thorax, face broad, clypeus truncate at apex and fringed with pale pubescence; enclosed space at base of metathorax finely longitudinally striated; sides of thorax near intermediate coxse with a short obtuse tubercle; tegulse polished black; wings hyaline, faintly dusky at tips, second submarginal cell much narrowed towards marginal, receiving the first recurrent nervure near the base and tiie second about one-fifth from the tip; legs robust, clothed with short black pubescence, posterior femora armed with a short subacute tooth at extreme base beneath, their tibiae rather sud- denly dilated beneath before apex; abdomen smooth and shining, the apical segments clothed with black pubescence. Length .35 inch. Hub. — Colorado, (H. K. Morrison). Five specimens. TRANS. AM. ENT. SOC. VII. MARCH, 1878. 62 E. T. CRESSON. Paniirgiis regularis.— ^. — Black, rather shining; head and thorax clothed with a long rather dense cinereous pubescence, very slightly mixed with black; head not wider than thorax, vertex smooth, almost nude and polished, ocelli arranged nearly in a straight line; occiput with a few black hairs; thorax delicately punctured, densely pubescent, that on mesothorax sometimes faintly tinged with ochraceous; base of metathorax opaque; wings faintly tinged with dusky, second submarginal cell much narrowed towards marginal, receiving the first recurrent nervure near the base and the second one-fourth from the tip; legs with rather long whitish pubescence; abdomen oblong-ovate, subdepressed, clothed with a short suberect pale pubescence slightly mixed with black, at the base and sides it is longer, apical margin of each segment with a regular narrow fascia of dense white pubescence. Length .40 inch. Hah. — California, (Henry Edwards). Three specimens. This has much the general appearance of an Andrena, Paniirgus andrenoides. — %. — Black, shining, clothed with a long whitish pubescence, most dense on face and sides of thorax; head broader than thorax, sinuate on posterior margin ; face very broad, ocelli arranged in a slight curve; clypeus, except two black points, and spot on each side of face, pale yellow ; mandibles long and slender; antennse long, scape with long hairs, flagellum fulvous beneath; tegulse piceous; wings hyaline, iridescent, nervures and stigma brov/n, second submarginal cell three-fourths the length of the first submarginal, receiving the first recurrent nervure one-fifth from the base and the second same distance from the tip; legs slender, clothed with long pale pubescence; abdomen oblong-ovate, shining, thinly clothed with a short pale pubescence, when vievved in cei'tain lights the apical margins of the segments have a narrow fascia subinterrupted medially. Length .36 inch. Hah. — Colorado, (Morrison); Texas, (Belfrage). Six specimens. Very closely resembles certain species of Andrena. Pauurgus nigrirrons. — %. — Form of andrenoides; entirely shining black, delicately punctured, rather thinly clothed with long pale pubescence; head wider than thorax, face very broad, clypeus large, flat, sparsely punc- tured, the tip squarely produced and slightly reflexed, the margin subemar- ginate; mandibles long, acute, and reddish at tip; cheeks flattened, the upper margin carinate; antennae long, flagellum brownish; tegulse dull testaceous; wings hyaline, slightly dusky at tips; second submarginal cell nearly as long as the first, narrowed nearly one-half towards marginal and receiving the recurrent nervures one-fifth from base and apex respectively; legs brown, clothed with pale pubescence ; abdomen elongate, subdepressed, polished, thinly clothed with short pale pubescence. Length .26 inch. Hah. — Texas, (Belfrage). One specimen. Panurgus marginatus. — J. — Black; head subopaque, flattened, not wider than thorax, clothed with pale pubescence, that on occiput and thorax above short, dense and dull fulvous; clypeus short, very transverse, truncate at apex, which is fringed with long hairs; antennse short, flagellum pale testaceous beneath towards apex; sides of thorax with long pale pubescence; metathorax sparsely pubescent, the enclosed space at base very well marked, flattened and minutely sculptured; wings as in andrenoides; legs subrobust. AMERICAN HYMENOPTERA. 63 rather thickly clothed with pale pubescence, tips of tarsi pale testaceous; ab- domen oblong-ovate, shining, thinly pubescent except at apex; apical margin of the segments broadly testaceous, fringed more or less with pale pubescence. Length .35 inch. Hah. — Kausas, (Prof. F. H. Sdow). One specimen. Has much the general appearance of an Halictus. Pannrgns IialictiiliiS. — % . — Black, subopaque, clothed with a whitish pubescence, very dense on face, cheeks and sides of thorax; head not wider than thorax, clypeus short, transverse, densely pubescent; antennae long sub- crenulated, flagellum testaceous beneath; thorax above minutely punctured, rather thickly pubescent, enclosed space at base of metathorax flattened; wings as in andrenoides, but with darker nervures ; legs clothed with white pubescence ; tarsi, except base, yellow; abdomen oblong, shining, thinly pubescent, more densely so at sides and apex and the depressed apical margin of the segments have a fringe of thin pale pubescence. Length .35 inch. Hob. — Colorado, (Morrison); Utah, (Putnam). Five specimens. This also looks very much like an Halictus. Paimrgu.s fimbriatus. — 9-— Black; head and thorax clothed with a rather dense pale pubescence; head not wider than the thorax; face and cheeks thinly pubescent; anterior margin of clypeus transverse; antennae short, entirely black; thorax above with short, slightly fulvous pubescence; enclosed space at base of metathorax flattened and finely reticulated; wings as in andrenoides, with the second submarginal cell more narrowed towards marginal; legs clothed with pale pubescence, quite dense on tibiae and tarsi; abdomen ovate, depressed, polished, apical margin of the segments depressed, dull testaceous and having a fascia of white pubescence, less conspicuous on basal segments; anal fimbria tinged with fulvous. Length .30 inch. Hab. — Colorado, (Morrison). One specimen. This may be the 9 of the preceding species. It has much the appearance of certain species of the following genus, which however have the marginal cell more or less truncate at tip. Calliopsis coloradensis.— 9 •— Short, robust, black: head broader than the thorax, clothed with pale pubescence on vertex and cheeks, face very thinly clothed, the pubescence on vertex slightly tinged with ochraceous; sides of the face extending narrowly nearly to the summit of the eyes, a triangular spot between antennae, clypeus except two cuneiform black marks sometimes nearly confluent, and base of mandibles occasionally, pale yellow; labrum sometimes brown; flagellum testaceous beneath; thorax above clothed with a short dense dull ochraceous pubescence, the sides with longer whitish pubescence; a narrow slightly interrupted yellow band on posterior margin of prothorax; tegulae dull testaceous yellow anteriorly; wings faintly dusky, marginal cell long, obliquely truncated at tip, second submarginal as long as the first, much narrowed towards marginal; legs with pale pubescence, more dense on tibiae and tarsi; four anterior knees pale yellowish; abdomen short ovate, depressed, shining, the segments with an apical fringe of dense white pubescence. Length .33 inch. 64 E. T. CRESSON, 1^ . — Smaller than the 9 > '^'th the sides of face, clypeus entirely, labrum, mandibles, scape beneath, tips of femora and the tibiae and tarsi, bright yellow. Length .30 inch. Hah — Colorado, (Ridings; Morrison). Five specimens. This closely resembles andreniformis, Smith, (of which his flavipes is doubtless the male), but is larger, more pubescent and easily dis- tinguished by the yellow mark on sides of the face beiug attenu- ated above and extending up on the orbits nearly to the summit of the eye. Calliopsis zebratus. — 9- — Black; head and thorax rather thickly clothed with a pale glittering pubescence; sides of face narrowly, clypeus except a subtriangular black mark on each side of the middle, a subtriangular spot between antennae, a round spot on each side, and a dot at base of mandi- bles, pale yellowish; flagellum testaceous beneath; disk of thorax sparsely pubescent, closely punctured ; wings hyaline, second fubmarginal cell shorter than the first, and much narrowed towards marginal; legs robust, thinly clothed with pale glittering pubescence, four anterior tibiae short, yellowish in front, their tarsi honey-yellow; intermediate femora compressed and keeled at base beneath; abdomen oblong-ovate, subopaque, segments one to four each with a yellow band across the middle, narrowed within, the fifth seg- ment with a broad yellow band slightly interrupted on the disk; anal fimbria whitish; venter entirely black, the apex with fulvous pubescence. Length .43 inch. Hdh. — Colorado, (Morrison). One specimen. A very handsome species, easily distinguished by the rather broad continuous yellow bands on the abdomen. Calliopsis SCitulliS. — f.— Shining black, thinly clothed with whitish pubescence; head rather broader than thorax, sparsely ])unctured; a sub- cuneiform mark on each side of face, subtriangular spot between antennae, spot on each side of clypeus and spot at base of mandibles, whitish; flagellura dull testaceous beneath; thorax with a few scattered punctures; wings as in zebratus; legs subrobust, clothed with ])ale glittering bail's ; knees and line on anterior tibiae in front, whitish; abdomen ovate, depressed, polished, a sub- lunate spot on each side of first and second segments, and a rather broad band on the three following segments, sometimes slightly interrupted on the disk and sinuate or subemarginate on each side posteriorly, yellowish-white, apex fimbriated with pale pubescence. Length .30 inch. Hah. — Colorado, (Morrison). Twenty-two specimens collected. A very pretty little species, easily recognized by the ornamentation of the abdomen. Calliopsis Edwardsii. — 9 . — Black, shining, sparsely punctured, thinly clothed with pale pubescence; a small triangular spot on each side of face, a longitudinal mark on disk of clypeus and spot on base of mandibles, white; flagellum beneath dull testaceous; mesothorax polished, rather thickly punc- tured in front, smooth on disk; pleura thickly pubescent; wings dusky, veined AMERICAN HYMENOPTERA. G5 as in preceding species; legs clothed with pale pubescence; abdomen ovate, depressed, a rounded spot on each side of first and second segments, a band on third and fourth, broadly interrupted on third and slightly so on fourth, and a dot on each side of fifth segment, whitish ; anal fimbria pale ; venter pieeous, immaculate. Length .35 inch. %. — Smaller than Ji ^ larger triangular mark on each side of face, a dot between antennje, clypeus except its apical margin and two minute dots near base, the mandibles except tips, four anterior knees and anterior tibise before, all white or yellowish-white; segments 1 — 5 of abdomen each with a narrow white fascia, those on first and second segments dilated on the sides and inter- rupted on the disk, the others slightly widened on sides; sixth segment, in one specimen, has a narrow fascia abbreviated laterally. Length .30 inch. Hab. — California, (H. Edwards). Three specimens. Calliopsis piclipes. — %. — Black, shining, delicately punctured, head and thorax thinly clothed with white pubescence; sides of face, spot between antennae, clypeus, labrum and mandibles, white; flagellum long, testaceous beneath; wings hyaline, veined as in precedihg species, costal vein pale testa- ceous; legs with scattered white pubescence, a line on anterior femora within, all the knees, the four anterior tibiae in front, their tarsi entirely, base of pos- terior tibiae, their extreme tips exteriorly, and first joint of their tarsi, all white; basal joint of posterior tarsi as long as the remaining joints taken to- gether, flat, dilated, truncate at tip, which has a tuft of long pale pubescence; abdomen oblong, convex, smooth and shining, thinly clothed with erect white pubescence, a subapical white band on all the segments except the last, more or less emarginate on each side posteriorly; venter shining black, immaculate. Length .26 inch. Ha/j. — Colorado, (Morrison). One specimen. A pretty little species, easily recognized by the curiously formed posterior tarsi. Calliopsis lateralis. — 9 -^Robust, black, shining, sparsely punctured ; head and thorax rather thickly clothed with a pale pubescence slightly tinged with ochraceous; a subtriangular spot on each side of face near base of mandi- bles, an elongate dot on disk of clypeus, and spot on base of mandibles, white; antennae short, flagellum dull testaceous beneath; disk of mesothorax almost nude, polished; wings faintly dusky, veined as in preceding species; legs subrobust, clothed with short j'ellowish pubescence; abdomen broad ovate, depressed, shining, minutely punctured at base, a yellowish- white spot on each extreme side of segments 1 — 4, rounded on one and two and transverse on three and four; anal fimbria ochraceous. Length .36 inch. Hab. — California, (Crotch). One specimen. This species has a broad abdomen, with pale lateral spots. Calliopsis mexicanus. — 9- — Black, head and thorax very coarsely conflueutly punctured, very thinly pubescent; apex of flagellum beneath testaceous; immediately behind the postscutellum the margin of the meta- thorax is coarsely striated, behind which there is on each side a smooth polished space; wings subhyaline, broadly dusky at apex, second submarginal cell as long as the first, narrowed one-third to marginal, receiving the first recurrent nervure one-third from the base and the second near the tip; posterior tibiae TRANS. AMER. ENT. SOC. VII. (9) MARCH, 1878. 66 E. T. CRESSON. thickly clothed with a long pale pubescence; abdomen oblong-ovate, shining, strongly punctured, the depressed apical margin being smooth and impunc- tured and obscure testaceous, base of third segment and the remaining seg- ments thickly clothed with a short appressed ochraceous sericeous pubescence; anal fimbria ochraceous. Length .35 inch. 'J,. — ^More coarsely punctured than Q and more pubescent; abdomen more sparsely and coarsely punctured, the segments depressed at base and having on each side a patch of pale sericeous pile, not very distinct, but seen only when viewed in certain lights. Length .30 inch. Ifah. — Mexico, (Sumichrast). Three specimens. Distinguished from all the other species by the very coarse sculpturing of the head and thorax. Resembles sefhiops Cress., in form, but much smaller and more coarsely sculptured. Calliopsis illinoiensis. — %. — Black, shining, head and thorax quite thickly clothed with a short whitish pubescence, tinged on vertex and meso- thorax with ochraceous; sides oj" face not higher up than clypeus, the clypeus entirely, labrum, middle of mandibles, and dot on tubercles lemon-yellow; flagellum and tegulfe pale testaceous; wings dusky, slightly darker at apex; second submarginal cell narrowed one-half to the marginal, receiving the first recurrent nervure at about one-fourth from the base and the second about one-fifth from the apex; legs clothed with pale glittering pubescence; knees, anterior tibise in front, base of posterior pair and all the tarsi pale yellow; abdomen elongate-ovate, shining, thinly pubescent except at tip where the pubescence is rather dense, apical margin of the segments depressed and obscure testaceous. Length .20 inch. Hub. — Illinois. Six specimens. This was presumed, both by Mr. Smith and myself, to be the S of andreni/unnis, bu;: judging from analogy in coloradensis, a closely allied species, the % of andreni- formis must have a broad form like the 9 ^ ^"^^ li^G that of fiavtpes Sm., which is doubtless the true % of that species. Calliopsis pauper. — 9 • — Uniformly shining piceous black, finely punc- tured, very slightly pubescent ; clypeus with larger scattered punctures; tips of mandibles, flagellum beneath and tegulse testaceous; mesothorax very finely and densely punctured; metathorax faintly striolate at base; wings hyaline iridescent, slightly dusky at apex, marginal cell obliquely truncate at tip, second submarginal narrowed towards marginal, receiving the first recurrent nervure one-fourth from its base, and the second very near or at the tip; legs clothed with short pale glittering pubescence, anterior pair and all the tarsi brown; abdomen oblong ovate, subconvex, shining, clothed with pale pubes- cence at apex. Length .22 inch. % . — More pubescent than 9> lower corner of face, clypeus, spot on labrum, and the mandibles white; all the knees, anterior tibiae, base and apex of two posterior pairs, and all the tarsi yellowish-white. Length .20 inch. Hah. — New York ; Colorado. Six specimens. This little species has the body almost destitute of pubescence, otherwise it closely resembles iUmoiensis. AMERICAN HYMENOPTERA. 67 Calliopsis californicns.— '^.— Black, shining, thinly clothed with pale pubescence; head thickly punctured; clypeus almost entirely pale yel- lowish, in two specimens the yellow is reduced to a small spot; scape with long pale pubescence, flagellum dull testaceous beneath; mesothorax and scutellum sparsely punctured ; metathorax roughened at base; tegulae pioeous; wings dusky hyaline, with neuration as in illinoiensis, except that the marginal cell is more broadly truncated at tip; legs with pale glittering pubescence, spot on all the knees, line on anterior tibiae and the four anterior tarsi more or less pale yellowish; abdomen oblong, shining, clothed with a short thin appressed pale sericeous pile, much more dense on apical segments, the second, third and fourth segments are slightly constricted at base and have in certain lights a pale sericeous band; venter brownish. Length .25 inch. Hah. — California, (Edwards, Crotch). Twelve specimens. The pale markings of the head are confined to the clypeus, and specimens will doubtless occur in which that part will be immaculate. Calliopsis atricornis.— '^ .—Shining black, very thinly clothed with pale pubescence; head broad, strongly punctured, triangular mark on each side of face, clypeus, a small triangular spot immediately above, and spot on labrum, white; antennae entirely black; mesothorax sparsely punctured, scutellum medially depressed, base of metathorax rugulose; tegulse pale pos- teriorly; wings dusky, neuration as in illinoiensis ; legs slender, with thin pale pubescence, tips of tarsi yellowish ; abdomen oblong, shining, with only a little pubescence at apex, second, third and fourth segments above transversely de- pressed at base and apex. Length .33 inch. Hah, — Colorado, (Morrison). Two specimens. Allied to cali- fornicus in form, but is larger, head broader and the face differently ornamented. Calliopsis Clypeatus.— % .—Black, shining, thinly clothed with whitish pubescence; clypeus entirely white; antennae entirely black; mesothorax finely not closely punctured; metathorax roughened at base; pleura clothed with long pale pubescence; wings hyaline, second submarginal cell about one-half the length of the first, the first recurrent nervure uniting with the second trans- verse cubital nervure, the second recurrent is received by the second sub- marginal cell near its apex; legs clothed with pale pubescence, long on the femora; anterior knees, line on their tibiae and basal joint of four anterior tarsi whitish; basal joint of posterior legs pale at base, rather broader than usual; abdomen ovate, subdepressed, smooth and shining, clothed at apex with pale pubescence. Length .23 inch. Hah. — Colorado, (Ridings). One specimen. Closely resembles callfornicus, but easily distinguished by the different neuration of anterior wings. Calliopsis atriceps. — % . — Entirely black, shining, thinly clothed with a long whitish pubescence; head broader than thorax, face very wide, clypeus flat, deeply and widely emarginate anteriorly, leaving the lateral angles promi- nent and acute, the labrum being retracted; mandibles long and slender; antennae longer than usual, reaching to the end of the thorax; sides ot thorax densely pubescent; tegulae dull testaceous; wings hyaline, neuration as in 68 :e. t. cresson. clypeatus except that the second submarginal cell is not so much narrowed towards the marginal; legs piceous, thinly clothed with pale pubescence, tarsi pale brownish; abdomen oblong, smooth and shining, with short scattering jJale pubescence, apex tufted with long pale pubescence. Length .25 inch. Hah. — California, (H. Edwards). One specimen. Calliopsis lepidus. — 9 .—Black, thickly clothed with pale pubescence, slightly mixed with black on vertex and thorax above; spot on sides of face, a dot between ancennse and a short longitudinal mark on disk of clypeus, white; flagellum pale testaceous beneath ; mesothorax subopaque, subseneous, minutely and closely punctured, clothed with short sparse pubescence; on postscutellum and pleura the pubescence is long and thick; tegulse black, polished; wings hyaline, dusky on apical margin, second submarginal cell very much narrowed towards marginal, receiving the first recurrent nervure about one-fifth from the base, and the second recurrent same distance from the tip; legs rather thickly clothed with pale pubescence, which on the broad basal joint of tarsi beneath is short dense and fulvous, this joint on the posterior pair has a tuft of long pubescence at the tip above, having the appearance of a spur; abdomen ovate, Bubconvex, shining, sericeous, the segments depressed on apical margin and having a narrow fringe of white pubescence widely interrupted on first segment; Bides and apex fringed with longer pale pubescence. Length ..30 inch. Hdh. — Georgia, (Morrison). One specimen. A very distinct species, Laving much the appearance of an Hulktns. Calliopsis abdominalis.— 9 .— Black, opaque, finely and densely punctured, head and thorax clothed with a very short sparse pale subsericeous pile; a large transverse spot on middle of face, sinuate beneath, base of mandi- bles, anterior half of tegulse, and tubercles, yellow; flagellum beneath and pos- terior half of tegulse testaceous; posterior margin of prothorax pale sericeous; scutellum and postscutellum unusually large and transverse, fulvous; meta- thorax short and broadly rounded, finely sculptured, more or less stained with fulvous; wings uniformly pale fuscous, stigma dull fulvous: legs subrobust, four anterior knees, their tibise except tips and base of their tarsi yellowish, posterior tibise rather thickly pubescent, the basal joint of their tarsi with a long spur of pubescence at apex; abdomen oblong-ovate, subdepressed, fulvous, apical margin of the segments depressed and golden yellow in certain lights; a round black spot on each extreme side of second segment, and a black band on base of third to fifth segmenis, reduced in one specimen to a small lateral spot, anal fimbria pale yellow; venter varied with black and fulvous. Length .33 inch. %. — Much narrower than 9 and more pubescent; the face entirely, labrum, mandibles except tips, scape beneath, tegulte anteriorly, tubercles and the legs yellow; scutellum obscure fulvous-; abdomen entirely fulvous except black spot on each side of second segment and a blackish stain on each side of apical seg- ment. Length .28 inch. Hab. — Texas, (Heiligbrodt). Four specimens. Easily recognized by the fulvous abdomen. Perdita hyalina.— 'J, .—Form elongate; head and thoi-ax bluish green, rather thickly clothed with an erect white pubescence; head not wider than thorax, clypeus slightly protuberant; mandibles long, slender, simple, reddish at tips; antennae pale testaceous beneath; prothorax unusually narrow above. AMERICAN HYMENOPTERA. 69 nearly subquadrate, the sides broadly and deeply grooved, mesothorax and scutellum delicately punctured, a finely impressed longitudinal line on each side over tegulee; metathorax smooth shining, impressed above at base; tegulse pale testaceous; wings whitish-hyaline, nervures and stigma pale yellow, mar- ginal cell as long as first submarginal, broadly truncated at tip, second sub- marginal half the length of the first and narrowed to marginal; legs slender, piceous, thinly clothed with white pubescence, anterior tibiae in front and all the tarsi pale; abdomen oblong-ovate, depressed, black, the depressed apical margins of the segments very pale, almost whitish, and more or less thinly fringed with white pubescence, more obvious on apical segments, extreme lateral margin of segments and the terminal segment testaceous. Length .32 inch. Hah. — Colorado, (Ridings, Morrison). Two specimens. Perdita. zebrata. — $. — Very much like albipennis Cress., but smaller; head and thorax blue or greenish blue, thinly clothed with pale pubescence; a deep longitudinal groove on anterior orbits, more conspicuous than in albi- pennis; sides of face narrowed above, clypeus, two dots above, sometimes con- fluent, occasionally an irregular transverse line on front above antennce, labrum, mandibles except tijis, scape beneath, interrupted band on prothorax.-tubercles and tegulse white or yellow ; sometimes the clypeus has two or more black dots ; flagellum pale testaceous, brown above; thorax smooth and shining; wings whitish-hyaline, nervures and stigma white or yellowish, neuration as in hyalina ; legs yellow the two anterior pairs more or less black behind, posterior femora above and their tibiae except base, black, tarsi varied with fuscous; abdomen oblong-ovate, flat, shining, yellow, with more or less broad black or brown band at apex of each segment above; in well marked specimens these bands bend obliquely downwards on base of the following segment; the first segment being black or brown with a yellowish band on the disk; apical seg- ments frinsjed with pale hairs; venter yellow. Length .25 inch. Var. — Four anterior legs entirely yellow; abdomen yellow with narrow blackish band at apex of segments 1 — 4, ending laterally in a dot which is sometimes separated from the band. Hah. — Colorado, (Ridings, Morrison). Seven specimens. This species is quite variable in its markings and specimens will doubtless be found with the abdomen entirely yellow. Mr. Frederick Smith, to whom specimens were sent, refers this species to Nomioules Schenck. Perrtita afiiiii!^. — 9- — Form of zebrata; head and thorax blue or green- ish-blue thinly clothed with pale pubescence; sides of face, narrowed above, clypeus except sometimes two or more black points, occasionally a spot or two above clypeus, base of mandibles, scape beneath, a spot on each side of pro- thorax, tubercles and tegulae pale yellow; flagellum pale testaceous beneath; wings as in zebrata; legs black with {)ale pubescence, the knees, and the four anterior tibiae in front yellowish; abdomen black, shining, a yellowish band on segments 1 — 4, interrupted on the disk and more or less dilated and oblique on the sides; fifth segment immaculate and fringed with pale pubescence; apical segment testaceous; generally, the spot on each side of fourth segment does not reach the lateral margin. Length .20 — .25 inch. 70 E. T. CRESSON. ^ . — Face, clypeus, labrum, mandibles, lower posterior orbits, antennae be- neath, two spots on prothorax, tubercles, tegulse and most of four anterior legs, yellow; abdomen with yellowish band on segments 1 — 3, slightly interrupted on disk and dilated laterally on second segment; fourth segment with two small pale spots. Length .20 inch. Hah. — Colorado, (Ridings). Five specimens. Closely resembles 8-maculata Say, but much smaller and with clearer wings. Perdita obscurata. — 9- — Form of zeh-ata; head and thorax blue, thinly clothed with pale pubescence; sides of face, sides of clypeus, spot on disk, mandibles except tips, scape beneath, spot on each side of prothorax, tubercles and tegulse, yellowish; flagellum testaceous beneath; thorax smooth and shining; wings as in zebraia except that the second submarginal cell is smaller, being scarcely more than one-third the length of the first submar- ginal; legs brown, with pale pubescence, knees, four anterior tibife in front and all the tarsi yellowish; abdomen piceous, shining, pubescent at tip, an obscure yellowish fascia, interrupted medially at base of segments 2 — 4. Length .23 inch. %. — Brighter in color and more pubescent; all beneath antennae, narrow line on lower posterior orbits, scape entirely, flagellum except brown line above, interrupted line on prothorax, tubercles, tegulse and the legs entirely except spot on apex of posterior femora above and their tibise above, bright yellow; a narrow uneven, ill-defined yellowish band at base of segments 2 — 6, apical segment and venter fulvo-testaceous. Length .20 inch. Hub. — Georgia, (Morrison). Two specimens. Perdita interrupta. — %. — Head and thorax blue, thinly clothed with pale pubescence; head broader than thorax, face broad and rather thickly pubescent, lower corner of face, clypeus, labrum, and mandibles except tips white; flagellum pale beneath; thorax subopaque, tegulee dull testaceous; wings hyaline, neuration as in hyalina ; legs black, thinlj' clothed with pale pubescence, knees and line on the four anterior tibise, and their tarsi yellowish; abdomen oblong-ovate, convex, shining black, a pale yel- lowish fascia on segments 2 — 5, interrupted on the disk and more or less suddenly dilated laterally, sometimes a pale lateral. spot on sixth segment. Length .23 inch. Hah. — California, (Crotch). Three specimens. Wlacrotera texana. — 9- — Piceous, smooth and shining, rather thinly clothed with a short whitish pubescence, sparsely punctured; head a little wider than thorax, anterior orbits with a deep longitudinal groove, clypeus with a few coarse punctures, tips of mandibles reddish; antennae short, flagel- lum brown; metathorax very short, transverse rounded on the sides; tegulsD pale testaceous; wings hyaline, nervures brown; marginal cell about as long as first submarginal, obliquely truncate at tip, appendiculate, second sub- marginal about half the length of the first, narrowed one-half towards mar- ginal; legs clothed with pale pubescence, that on posterior tibise long and loose; abdomen ovate, depressed, apical margin of segments obscurely testa- ceous, anal fimbria short and pale; venter broadly fasciate with testaceous. Length .35 inch. Hah. — Texas, (Heiligbrodt). Three specimens. AMERICAN HYMENOPTJERA. Yl niacrotera megacephala.— '£•— Head very large, transversely sub- compressed, shining brown, finely punctured; face very broad, prominent between antennae, the anterior margin truncate, clypeus small, short, coarsely punctured, mandibles long, pale testaceous, fuscous at tips, a moderately deep longitudinal groove on anterior orbits above the antennae which are short and fuscous; thorax smaller than head, black, prothorax transversely compressed; metathorax smooth and shining; tegulse pale testaceous; wings as in texana ; legs brown, with short pale pubescence ; abdomen short ovate, subconvex, shining, reddish-brown or ferruginous, apex with a few pale hairs, sides of second and third segments with a submarginal groove; anal segment small, quadrate, flattened, coarsely punctured. Length .26 — .^{O inch. Huh. — Texas, (Heiligbrodt). Three specimens. This mcay be the % of texana. The head is very broad, and is larger in the specimen with dark abdomen; otherwise there appears to be no difference between them. Macrotera californica.— '^ .— Head and thorax blue, or greenish-blue, thinly clothed with whitish pubescence; head broader than thorax; face broad, a short indistinct groove on upper anterior orbits; clypeus broadly subtriangular, the lateral corners reaching the base of mandibles, the apex deeply emarginate for the labrum which is deeply foveate; broad lower margin of face, sometimes a dot beneath insertion of each antenna, clypeus except two black points near base, labrum and mandibles, except tips, white or yellowish white; antennae pale testaceous beneath; mesothorax delicately punctured, with a finely im- pressed longitudinal line on each side over tegulte : metathorax smooth, broadly rounded; tegulae ))ale testaceous; wings hyaline, neuratiou much as in texana, except that the marginal cell is shorter and squarely truncate at tip; legs black, thinly clothed with pale pubescence, anterior tibiae in front and all the tarsi testaceous; abdomen short, ovate, convex, shining, black, the segments rather broadly margined at base and apex with dull testaceous, apex incurved, the terminal segment short and broad, apical margin sinuate and having beneath two divergent obtuse teeth. Length .25 inch. Hah. — California, (Edwards, Crotch). Three specimens. Macroteracephalotes.— '^.— Lemon-yellow, shining; head very large, transversely quadrate, slightly emarginate above, and broadly truncate beneath, middle of vertex longitudinally impressed, face very broad, clypeus exceedingly small, tuberculiform, tinged with fulvous; labrum also very small; mandibles large, broad at base, acute and simple at tip; a sinuate band from eye to eye at summit, a punctiform dot just below on anterior orbits and tips of mandibles black; antennae ; thorax smaller than head; prothorax prominent, formed much as in the Sphegidae; a stripe on each side of prothorax, another beneath wings, pleura beneath, and the metathorax" except two pale spots black or bluish-black; wings whitish-hyaline, neuration as in preceding species; legs entirely yellow; abdomen broadly ovate, nearly circular, flattened, smooth and polished, base of first segment and a band near apical margin blackish, the re- maining segments tinged with brownish on apical margins; apex acuminate. Length .25 inch. Hah. — Nevada, (H. Edwards). One specimen. A very curiously formed species. 72 E. T. CRESSON. Nomada Edwardsii. — %. — Black, head and thorax closely and deeply punctured; sides of the face, narrowed above but not quite reaching the summit of eyes, spot on vertex beneath ocelli, clypeus except two black dots, spot above, labrum, mandibles except tips, posterior orbits, scape beneath, collar, lateral margin of mesothorax dilated anteriorly, two short lines on disk, tubercles, large mark on pleura, scutellums, large angular mark on each side of metathorax, and tegulse, all lemon-yellow: flagellum ferruginous at base and beneath, second and third joints subequal, the second slightly longer; wings dusky, darker at apex; legs yellow, coxse, femora and tibiae behind more or less black; abdomen very minutely punctured, lemon-yellow, basal half of first segment and basal margin of remaining segments, black. Length .50 inch. Ilab. — California, (Henry Edwards). One specimen. This fine species closely resembles superba Cress., but is quite distinct. In giving the relative lengths of the third and fourth joints of antennae,' (second and third of flagellum), the view is always taken from beneath, the greatest difference being generally noticeable in the males. Noiuada jflorrisoni. — 9- — Ferruginous; head and thorax densely and confluently punctured; sides of face, clypeus, spot above, labrum, base of mandibles, posterior orbits, collar, tegulse, tubercles, band or two spots on scutellum, generally a line on postscutellum, and a more or less distinct mark on pleura, yellow; dot on each side of clypeus at base, space around base of antennae, spot enclosing ocelli, posterior margin of head, most of prothorax, anterior middle of mesothorax, and the metathorax, except two yellow spots sometimes margined with ferruginous, black; antennae pale ferruginous, third and fourth joints equal in length; scutellum slightly bilobate; wings faintly dusky, darker at apex; legs pale ferruginous, knees and tibiae more or less yellow, coxae black behind; abdomen shining, very minutely punctured, yel- low, basal half of first segment ferruginous, apical margin of segments 1 — 4 narrowly brown or ferruginous; venter yellow, ferruginous at base; the yellow band on first segment is often more or less deeply notched on the anterior middle. Length .40 — 45 inch. Hub. — Colorado, (H. K. Morrison). Eight specimens. Noinada Belfragei. — 9- — Form short, unusually robust, ferruginous, head strongly, clypeus finely, and mesothorax coarsely and confluently punc- tured; line connecting ocelli and tips of mandibles black; flagellum fuscous above, the second joint of flagellum longer than third; collar, tubercles, two spots on scutellum and line on postscutellum obscurely yellow; scutellum strongly bilobate; metathorax nearly smooth, with white pubescence laterally : pleura strongly and sparsely punctured; wings fuscous on apical margin; abdomen finely and closely punctured shining, a large ovate spot on each side of first and second segments, largest on second, an interrupted band on third and a narrower band on fourth and fifth, yellow; venter immaculate. Length .40 inch. JIab. — Texas, (G. W. Belfrage). A very distinct species, with an unusually robust form. AMERICAN HYMENOPTERA. 73 Nomada zebrata. — 9- — Ferruginous; head and thorax very densely punctured; sides of face, collar, tubercles, tegulse, scutellums, spot on each side of metathorax, and large irregular longitudinal mark on pleura, pale yellow; tips of mandibles black; second and third joints of flagellum sub- equal, the second slightly longer; wings hyaline, dusky at apex; legs pale ferruginous, spot on coxse and knees yellow; abdomen dull ferruginous, an. interrupted band on first segment, a band on the second, third and fourth segments, narrowed in the middle, that on second broadest, and the fifth segment entirely, yellow; venter banded with yellow. Length .40 inch. %. — Marked similar to 9 but brighter in color; sides of face, clypeus, spot above, orbits, clypeus, labrum, and mandibles except tips, yellow; scape short, broadly dilated, almost globose, second joint of flagellum much longer than third; spot behind antennae, spot connecting ocelli, and spot at base of meta- thorax black; the yellow on scutellum is generally divided into two spots by a narrow ferruginous line; abdomen with six yellow bands and the venter banded and spotted with yellow ; the head above antennae, the flagellum except base and the mesothorax sometimes varies to black instead of ferruginous, and in two specimens from Kansas the prevailing color of both thorax and abdomen is black. Length .45 inch. Hab. — Colorado; Kansas, (Ridings). Six specimens. The % of this species is readily distinguished by the short dilated scape. JVomada opposita. — 9 -—Pale ferruginous, head and thorax very densely punctured, clothed with pale pubescence; sides of face, clypeus, spot above, labrum, base of mandibles, collar, tubercles and postscutellum, yellow; tips of mandibles, line connecting ocelli, anterior suture of thorax narrowly and the metathorax, except a large ferruginous mark on each side enclosing a yellow spot, black; antennae entirely pale ferruginous, third and fourth joints equal in length; scutellum bilobate pale ferruginous; wings dusky at tips; abdomen minutely punctured, apical margin of the segments narrowly fuscous, a spot on each side of third segment, and broad band on fourth and fifth segments, yellow; venter varied with yellow. Length .38 inch. Hab. — California, (H. Edwards). One specimen. Nomada adducta. — % . — Head ferruginous, closely punctured; large spot on vertex extending more narrowly back to occiput covering ocelli, posterior margin of head and tips of mandibles, black; sides of face, clypeus and base of mandibles, yellow; antennae rather short, fuscous, paler beneath, scape short, dilated, ferruginous at base; third joint slightly longer than fourth; thorax black, densely and strongly punctured; a large mark on each side of meso- thorax, the scutellums and most of pleura, ferruginous; scutellum bilobate; metathorax not distinctly sculptured, the sides with patch of silvery pile; an obscure yellowish line on each side of collar ; tegulae and tubercles, ferruginous ; wings hyaline, fuscous at extreme tips; legs ferruginous, base of coxae and of femora more or less, spot at tip of posterior tibiae and base of their tarsi, black; abdomen closely punctured, ferruginous, immaculate except a black band on first segment and a dusky spot on each side of second; extreme lateral apical margin of the segments and apex with white pubescence. Length .36 inch. Hab. — Colorado, (Morrison). One specimen. The scape resembles that of zebrata in shape, although not so much dilated. TRANS. AMER. ENT. SOC. Vll. (10) MARCH, 1878. 74 E. T. CRESSON. llVoiiiada affabilis. — %■ — Blaek; head and thorax densely and cou- fluently punctured, thickly clothed with short pale pubescence; sides of face, clypeus, spot above, labrum, mandibles except tips, dot at summit of eyes, posterior orbits, scape beneath, collar, tubercles, tegulse, scutellums, spot on each side of metathorax and two spots or band on pleura, yellow; flagellum fulvous beneath, second joint slightly longer than third; scutellum bilobate; wings hyaline, faintly dusky at tips; legs ferruginous, the tibiae and tarsi more or less yellow, posterior femora and tibise black behind; abdomen closely and finely punctured, a yellow band on all the segments except the last, broadest on second, all more or less narrowed in middle and that on first segment sinuate; venter banded with yellow. Length .40 — .45 inch. Hab. — New York ; Illinois. Two specimens. This looks much like the % of vincta Say, which however has the second joint of flagellum much shorter than the third. Bfomada Ridingsii. — 9 . — Black, head and thorax strongly punctured ; face shining, sparsely punctured; large irregular mark on each side of face, spot on base of mandibles, short line on posterior orbits, collar, tubercles, tegulse, two spots on scutellum, postscutellum and lunate mark on pleura, white; labrum, mandibles, antennse, spot beneath wings, sides of metathorax and the legs ferruginous; antennae short, second joint of flagellum longer than third; mesothorax coarsely and confluently punctured; scutellum slightly bilobate; base of metathorax smooth, impunctured. sides clothed with short silvery pubescence; wings fuscous at tips; abdomen closely and strongly punc- tured, ferruginous, segments 1 — 5 each with a white band, broad and even on the first, broad and dilated laterally on second and narrow on the remaining segments; venter ferruginous with a white dot on each side of the third segment. Length .40 inch. Hub — Colorado, (Mr. James Ridings). This handsome species resembles Putmani Cress., which however has the mesothorax sparsely punctured and shining; the ornamentation is very much alike in both species. IVoiuada SuaviS. — 9- — Black, opaque; head and thorax strongly punc- tured, mesothorax coarsely so; face shining, sparsely punctured; sides of face nearly up to summit of eyes, clypeus, confluent spot above, labrum, mandibles except tips, dot below anterior ocellus, posterior orbits, scape beneath, collar, tubercles, tegulse, band or two spots on scutellum, postscutellum, two ovate spots on metathorax, and large mark on pleura, lemon-yellow; flagellum dull testa- ceous, brown above, second joint longer than third; scutellum bilobate; wings fuscous on apical half with hyaline mark beneath marginal cell ; legs yellow more or less black behind, four anterior femora generally fulvous at base before; abdomen closely and rather strongly punctured, black with a yellow band on segments 1 — 4, very broad and dilated laterally on second, fifth segment entirely yellow, apical margin of the segments often tinged with fulvous especially on the sides; venter banded with yellow, the last segment with a large round yellow spot on each side. Length .35 inch. '^ .7— Resembles the 9) but the metathorax is black immaculate, clothed laterally with silvery-white pubescence. Length .40 inch. Hab. — California, (Behrens); Oregon, (H. Edwards). AMERICAN HYMENOPTERA. 75 Nomada Snowii. — ^9. — Black, opaque, densely and strong!}' punctured; middle of face, clypeus, antennae at base and beneath, pleura beneath, two dots on metathorax and flanks, legs and first abdominal segment above and beneath, ferruginous; mark on each side of face, apex of labrum obscurely, spot at base of mandibles, posterior orbits, collar, tubercles, tegulse, scutellums and large mark, notched behind, on pleura, white; second joint of flagelluni equal in length with the third; scutellum nearly flat, very faintly impressed medially; wings slightly dusky, hyaline near tips; line on four anterior femora beneath, near tips, line on all the tibise at base and spot at tips, white; abdomen opaque finely and closely punctured, a dot on each side of first segment riear apex, a broad band narrowed medially on segments 2 — 4, and the fifth segment entirely pale yellowish-white; venter banded with white. Length .34 inch. %. — Marked like the ?, but without any ferruginous color, except on an- tennae beneath and on legs; sides of face, clypeus, labrum, mandibles except tips, spot on scape beneath, collar, scutellums, tubercles, large notched mark immediately beneath tubercles and tegulse, yellowish-white; face silvery; legs ferruginous, the femora more or less black behind, knees and tibiae in front yellow, a black spot on four posterior tibiae near tips; first segment of abdomen with a narrow yellow band, deeply indented on each side anteriorly and nearly interrupted on the disk, segments 2 — 6 each with a yellow band, broad on second segment and narrowed in the middle; venter banded with yellow. Length .36 inch. Hub. — Colorado, (Prof. F. H. Suow 9 ; Morrison % ). Two speci- mens. A very pretty species. IVomada Ileiligbrodtii. — 9 . — ^Black, opaque, coarsely and confluently punctured; mouth tinged with ferruginous; large cuneiform spot on each side of face, spot on base of mandibles, spot on upper posterior orbits, collar, two spots on scutellum, postscutellum, tubercles, sublunate spot on pleura and tegulse, white; antennse with three basal joints ferruginous, third joint longer than fourth; metathorax immaculate, im])unctured, clothed laterally with pale pubescence; wings fuliginous along costa and at tip; legs entirely ferruginous; abdomen finely and closely punctured, rather shining, a continuous yellowish- white band on segments 1 — 5, that on second segment dilated laterally, and that on the fifth subinterrupted medially; venter black, with a narrow curved pale line on each side of third and fourth segments. Length .35 inch. %. — Smaller and more slender than 9> ^^^ more shining, with the pale markings lemon-yellow; the entire face beneath antennse is yellow; antennae entirely ferruginous except at tip above; the yellow spot on pleura reduced to a dot- wings darker; the yellow bands on abdomen are broader and inter- rupted medially on segments 2 — 4, while on basal segment there is only a small lunate spot or line on each side near apex, sixth segment with a yellow spot on each side; venter black immaculate. Length .29 inch. Hah. — Texas, (Mr. L. Keiligbrodt). Three specimens. This is closely allied to modcsta Cress., which always has a yellow spot on each side of metathorax. Nomada Krngii. — 9- — Black; head and thorax densely and rather finely punctured; face, sides of thorax and of metathorax clothed with a fine silvery- white sericeous pile; sides of face, spot at base of mandibles, posterior 76 E. T. CRESSON. orbits, collar, band or two spots on scutellum, short line on postscutellum, two spots on metathorax, tubercles, lunate mark on pleura, and tegulse, yellow ; face smooth and shining, very finely punctured; mandibles, antennae beneath and legs ferruginous; second and third joints of flagellum short, about equal in length; scutellum bilobate; wings hyaline, fuscous at extreme tip; a fuscous spot or line on posterior tibise behind; abdomen shining; a band near apex of first and second segments narrowed in the middle, a transverse spot on each side of third and fourth segments and a band on the fifth, yellow; venter with a broad yellow band on third segment. Length .30 inch. %. — Marked like the J except that the clypeus, spot above, and labrum, are yellow; posterior legs behind and broad line on their tibise in front black, knees, line on all the tibise in front, base and apex of posterior pair, and base of their tarsi yellow. Length ..30 inch. Hob. — Porto Rico, (Mr. Leopold Krug). Four specimens. Re- serubles ciibensis somewhat in ornamentation. Xoinada limata.— J .— Black or brown, and shining, clothed with short pale pubescence, longer and more dense on sides of abdomen; a line on an- terior orbits curved inwardly to clypeus, a dot on clypeus, collar, tubercles, a dot on pleura, a bilunate line on scutellum, and the postscutellum, white; antennse brown, ferruginous at base, third joint a little longer than fourth; mesothorax smooth, polished, impunctured ; scutellum flat; pleura rather coarsely punctured; metathorax with whitish pubescence at sides; tegulse ferruginous; wings subhyaline, costal margin broadly fuliginous ; legs brown or black, immaculate; abdomen finely punctured, clothed above with a short sericeous pile, base tinged with ferruginous, a narrow continuous whitish band on segments one, two, and four, and a broader interrupted one on fifth segment; venter immaculate. Length .35 inch. Hab — Mexico, (Sumichrast). One specimen. This resembles very closely the tibialis Cress., from Cuba, but in that species the legs are red and the wings are dusky only at tip; in both species the meso- thorax is polished and impunctured. Noniada mexicana.— 9 .— Black, opaque, head and thorax strongly and confluently punctured; narrow anterior orbits ending in small spot on each side of clypeus, narrow posterior orbits, spot on middle of clypeus, spot on base of mandibles, collar, band at base of scutellum, one on postscutellum. spot on each side of metathorax, and three snots on pleura, whitish; base of antennse, tubercles, tegulse and legs ferruginous; third and fourth joints of antennse about equal in length; scutellum obliquely flattened, roughly sculptured; wings hyaline, costal margin fuliginous; abdomen slightly fer- ruginous at extreme base, a narrow whitish band on first and second seg- ments, curved anteriorly on the lateral margin, fourth and fifth segments each with an narrow ill-defined pale band abbreviated laterally; venter with a pale spot on disk of first segment and a broad band on second segment. Length .35 inch. Hab. — Mexico, (Sumichrast). One specimen. Marked much like limata, but more slender in form and separated at once from that species by the coarsely sculptured mesothorax. AMERICAN HYMENOPTERA. 77 Jornada pilosula.— '^ . — Black, immaculate, shining, rather thickly clothed with pale pubescence, finely punctured; head slightly narrower than thorax; eyes large, the front narrowed above, so that the space between the eyes and ocelli is quite narrow; antennae short, slender, flagellum ferruginous, second and third joints short and equal in length; mesothorax finely and sparsely punctured ; scutellum subbilobate; base of raetathorax depressed and polished; wings hyaline, dusky on apical margin; legs tinged with brown, thickly clothed with whitish pubescence, tarsi more or less testaceous; abdo- men short-ovate, polished, the apical margin of the segments fringed with whitish pubescence; venter brown, fringed with pale hairs. Length .40 inch. Hah. — New York. One specimen. More pilose than any species known to me, and easily recognized by the color being entirely black, and the surface smooth and shining. Xomada SCita. — % . — Black, opaque; head and thorax strongly and con- flueutly punctured, clothed with whitish pubescence; face silvery sericeous; sides of face, clypeus, spot above, labrum, mandibles except tips, antennae beneath, two spots on collar, tubercles and tegulae, yellow; antennae blackish above, except in middle and extreme tip which are pale fulvous, scape very robust cylindrical, third joint about half the length of fourth which is joined obliquely to the third and narrowed at tip, the flagellum crenulated when viewed laterally; scutellum subbilobate, entirely black, a minute pale spot on each side of postscutellum ; wings hyaline, with a dusky spot at tip, third submarginal cell narrowed almost to a point towards marginal; legs pale fer- ruginous or fulvous, most of coxae and trochanters beneath, black; abdomen shining, finely punctured, a narrow interrupted band on first segment, and an continuous band on the following segments, broadly dilated laterally on second, white; venter brown. Length .30 inch.- Hub. — Colorado, (Morrison). One specimen. A beautiful little species, with antennae formed like those of articulata Smith. Nomada accepta. — 9-— ^''^c'^j opaque; head and thorax coarsely and densely punctured ; orbits, very broad anteriorly, clypeus except base, labrum, mandibles, antennae, collar, four stripes on mesothorax, scutellums, four spots on metathorax, tubercles, most of pleura and tegulae, ferruginous; antennae dusky above, third joint much shorter than fourth; scutellum strongly bilo- bate, shining; wings dusky, with hyaline spot near tip; legs ferruginous, coxte and femora more or less black at base; abdomen shining, closely and minutely punctured, varied with ferruginous, a narrow sinuate subinterrupted band on first segment, a broad band on second segment, narrowed gradually to middle where it is slightly interrupted, a line on each side of third segment and the fifth segment notched on each side posteriorly, all white; posterior margin of third segment broadly ferruginous; venter ferruginous, varied with blackish. Length .30 inch. Var. 9. — Abdomen entirely black above except a transverse cuneiform spot on each side of second segment, a spot on each side of third, an interrupted band on the fourth, and a square spot on middle of fifth segment, all white. Length .30 inch. %. — Larger and more robust than 9 » black; sides of face narrowly, anterior margin of clypeus, and scape beneath white; labrum, mandibles, flagellum 78 E. T. CRESSON. beneath, line on collar, tubercles, scutellura, tegulse, spot before and mark on pleura, ferruginous; wings hyaline, apical margin fuscous; legs ferruginous, 00X88 and femora behind black; abdomen marked as in 9 > except that the fourth, fifth and sixth segments are ferruginous with a narrow white baud, venter with four white spots. Length .35 inch. Hah. — Colorado, Kansas, (Snow S , Morrison 9 )• Tliree speci- mens. Nomacla Tltticollis. — 9- — Yellow, opaque, head and thorax densely and strongly punctured; vertex except sides and spot beneath ocelli, and the occiput, black; flagellum ferruginous, second and third joints subequal, the former slightly longer, scape yellow, black behind; mesothorax black with four longitudinal yellow lines; sutures of the thorax narrowly and a stripe on middle of metathorax black; scutellum obliquely flattened, not at all depressed medially; wings faintly dusky, darker at tip; legs pale yellow, a stripe on posterior femora above and beneath and their tibiae within fuscous; abdomen strongly narrowed at base, blackish above, segments 1 — 5 each with a narrow yellow band, broader on the sides, that on first segment with a fus- cous dot on each side posteriorly, apical margin of first segment broadly dull testaceous; venter yellow. Length .35 inch. Hah. — Mexico, (Sumichrast). One specimen, Dfomada. civilis. — %. — Black, opaque; head and thorax densely and confluently punctured and thickly clothed with short pale pubescence; sides of face extending narrowly up on anterior orbits, clypeus, sometimes a spot above, labrum, mandibles except tips, posterior orbits, scape beneath, line or two spots on collar, sometimes wanting, tubercles, irregular mark beneath, occasionally a small spot on ea<^h side of metathorax, and the tegulse yellow; scape robust, flagellum ferruginous with a black line above, second joint a little shorter than third; scutellum not at all prominent; wings faintly dusky at tips; legs yellow, eoxfe at base, all the femora behind more or less, and a spot on all the tibiae behind, black; tarsi more or less ferruginous; abdomen shining, yellow, basal half of first segment and narrow basal margin of re- maining segments black, apical margin of segments 1 — 4 narrowly fuscous, anterior margin of yellow band on first segment sinuate; venter yellow, some- times banded with black. Length .35 — .45 inch. Hah. — Colorado, (Hidings, Morrison). Nine specimens. This is closely allied to the % of luteola St. Farg. monBada vicinalis.— '^ . — Black, opaque; head and thorax densely and finely punctured and rather thickly clothed with short pale pubescence, tinged with yellowish on vertex and thorax above, on face and sides of thorax silvery sericeous; an emarginate line on sides of face, line beneath eyes, clypeus, labrum, base of mandibles, scape beneath, tubercles and spot beneath, yellow; scape behind and spots on basal half of flagellum behind black; second joint of flagellum rather more than one-half the length of tiiird; two narrow obscure stripes on mesothorax, scutellum and tegulse, ferruginous; scutellum subbilo- bate, not prominent; wings narrowly fuscous on apical margin; legs ferrugi- nous, posterior coxse and all the femora behind more or less black; abdomen smooth and shining ferruginous, basal half of first segment and spot on extreme AMERICAN HYMENOPTERA. 79 sides of the segments black; a yellow band, more or less interrupted on middle on segments 1—6, broader and narrowed towards middle on second segment; venter ferruginous, spotted or banded with yellow. Length .40 inch. Hah. — Colorado, (Morrison). Two specimens. This may be only a variety of the preceding species. Nomada rivalis.— 'J, .—Black, opaque; head and thorax densely punc- tured, rather thickly clothed with pale pubescence, which is darker on vertex and thorax above; sides of face, lower posterior orbits, clypeus, spot above, labrum, mandibles except tips, scape beneath, collar, two spots on scutellum, tubercles, a more or less large irregular mark on pleura, and tegulse, yellow; antennae black behind, scape robust, flagellura ferruginous beneath, second joint about one-third the length of third; scutellum subbilobate, not promi- nent; wings faintly dusky at tips; legs yellow, tinged with ferruginous, coxse at base, trochanters behind, four posterior femora at base and behind, and spot or stripe on their tibise black; abdomen shining, black, a broad yellow band on all the segments, that on the first deeply notched in the middle anteriorly, the others more or less narrowed in the middle anteriorly, venter yellow. Length .40 inch. jjah. — California, (H. Edwards, Behrens). Three specimens. This and the nest species resemble the two preceding species in color and ornamentation, but are distinguished at once by the second joint of the flagellum being much shorter in proportion to the length of the third joint. Noinada f'ragiliS.— 'S-— Black, opaque; head and thorax densely punc- tured, rather thickly clothed with pale pubescence; line on sides of face, clypeus, labrum, base of mandibles, line beneath eyes, scape beneath, tuber- cles, sometimes a spot beneath, and occasionally two spots on scutellum, pale yellow ; antennse long, black behind, scape robust, flagellum ferruginous, second joint about one-fourth the length of third; scutellum not prominent; tegulae and legs ferruginous, coxse and all the femora more or less behind black, some- times the posterior femora is almost entirely black as well as their tibite behind and base of tarsi; wings dusky on apical margin; abdomen marked as in the preceding species. Length .30 inch. jjul^ — Colorado, (Ridings, Morrison). Three specimens. Noiuada cifrina.— 9 .— Black, opaque; head and thorax strongly and densely and face finely punctured; sides of face, clypeus except black dot on each side, spot above, labrum, mandibles except tips, broad posterior orbits, spot beneath lower ocellus, scape beneath, collar, tegulae, spot before, seutellums, spot on each side of metathorax, tubercles and pleura laterally and beneath, all pale lemon-yellow; the pleura has a black dot beneath wings and a short black line behind each anterior coxa; antennae rather long, flagellum fulvous, black at tip, second joint a little shorter than third, both together being longer than scape; scutellum bilobate; wings varied with fuscous; legs pale lemon- yellow, coxae and femora above and behind and a stripe on four posterior tibias behind, black; tips of tarsi fulvous; abdomen pale lemon-yellow, subopaque, base of first, and narrow apical margin of first and second segments black, 80 E. T. CRESSON. narrow apical margin of third and fourth segments dull testaceous; venter lemon-yellow. Length ,40 inch. Hah. — California, (H. Edwards). One specimen. Closely resembles Edwardsii, but the second joint of the flagellum is shorter than the third. Noniada miinda. — 9- — Black, opaque; head and thorax ^strongly and confluently, face finely, punctured, clothed with pale ochraceous pubescence; sides of face, anterior and posterior orbits, clypeus, labrura, mandibles except tips, antennse, collar, lateral margin of mesothorax, scutellums, tubercles, large mark on pleura, tegulse and legs, ferruginous; second joint of flagellum a little shorter than third; scutellum subbilobate, not very prominent; wings fuscous, pale at base and before apex, costal vein and stigma fulvous; posterior femora and tibiae black behind; abdomen smooth and shining, first segment entirely ferruginous except a black dot on each side near base; segments 2 — 5 white, the second narrowly fulvous at apex, the third and fourth narrowly black at apex, and the fourth and fifth narrowly black at base; venter ferruginous, immaculate. Length .45 inch. Hah. — Colorado, (Ridings). One specimen. Nomada dilncida. — 9- — Ferruginous, head and thorax strongly and confluently punctured, spot on each side of the face, large spot behind eyes, collar, lateral anterior corners of mesothorax, band at base of scutellum, tubercles and two large marks on metathorax, yellow; spot between antennjB, dot on each side of clypeus, posterior margin of head, sides of prothorax, sutures of thorax, sides of metathorax and stripe on middle, black; second joint of flagellum a little shorter than third; scutellum depressed, slightly impressed medially; tegulse smooth and shining; wings subhyaline, fuscous on apical margin; anterior tibise in front and spot at base and tip of posterior tibise yellowish; posterior femora black behind ; abdomen smooth and shining, yellow above, basal half of first and apical m,argin of segments 1 — 4, fuscous ; venter ferruginous, banded with yellow. Length .45 inch. Huh. — Colorado, (Morrison). One specimen. Bfoiuada libata. — 9- — Ferruginous, opaque; head and thorax very densely and confluently punctured; tips of mandibles, dot on each side of clypeus, spot behind each antenna, confluent with a spot enclosing the ocelli, a stripe on middle of mesothorax dilated anteriorly and posteriorly and inter- rupted before middle, broad stripe on middle of metathorax, dot on sides of prothorax and spot above middle coxbb, black; apex of flagellum fuscous, second joint slightly shorter than third ; scutellum subbilobate; tegulse opaque and coarsely punctured; wings faintly tinged with fuscous, apical margin fuscous; abdomen opaque, minutely punctured, a large rouiid spot on sides of second segment, a band on third and fourth and the fifth segment entirely, pale yellow; venter ferruginous, immaculate. Length .45 inch, %. — Head yellow; a dot on each side of clypeus, tips of mandibles, vertex and occiput, black; antennae ferruginous, more or less black or fuscous behind and at tip, third joint much shorter than fourth; thorax ferruginous; meso- thorax black with broad lateral margin and narrow stripe on each side of middle ferruginous, sometimes ferruginous with a broad median black stripe dilated posteriorly; scutellum more strongly bilobed than in J; postscutellura AMERICAN HYMENOPTERA. 81 yellowish; disk and lateral margin of metathorax and spot on each side of prothorax black; wings hyaline, narrowly fuscous on apical margin; abdomen yellow above, the apical margin of the segments ferruginous; first segment ferruginous with a narrow interrupted yellow band, more or less indented anteriorly and posteriorly. Length .40 inch. Hah. — Colorado, (Ridings). Four specimens. NoinaciA ptirata. — 9- — Ferruginous, opaque; head and thorax strongly punctured, densely and confluently so on mesothorax; two spots behind antennae, line connecting ocelli, posterior margin of cheeks, narrow stripe on disk of mesothorax ending in a spot on anterior and posterior margins, sutures of pleura narrowly, spot on each side of prothorax and broad stripe on middle of metathorax, black; flagellum dusky toward apex, second joint shorter than third; sculelluin strongly bilobate, shining, sparsely punctured; tegulse polished with a few scattered punctures; wings subhyaline, narrowly fuscous on apical margin; femora and tibiae more or less black behind; abdomen opaque, densely and minutely punctured, ferruginous, basal half of first seg- ment black, a small yellow spot on each side of middle, segments 2 — 4 each with a very broad yellowish-white band, those on two and three slightly indented on each side posteriorly, fifth segment entirely yellowish-white; venter immaculate. Length .45 inch. Hah. — Colorado, (Ridings). One specimen. This and tlie pre- ceding species are closely allied, but may be easily separated by the tegulse, which in Uhata is larger, coarsely sculptured and opaque. Nomada pacata. — 9- — Ferruginous, opaque; head and thorax strongly and confluently punctured, the face finely punctured; a spot or line on lower anterior orbits, two spots at base of metathorax, sometimes wanting, and occasionally two spots on pleura, yellow; dot on each side of clypeus, tips of mandibles, two spots behind antennae sometimes confluent with spot enclosing ocelli, posterior margin of cheeks, collar, sutures of the thorax broadly, a stripe on middle of mesothorax, sometimes a stripe on each side, pleura beneath, and broad stripe on middle of metathorax, black; antennae robust, scape narrowed at base, third joint short, rather more than one-half the length of third; scutellum prominently bilobate, shining, sparsely punctured ; tegulae pale fer- ruginous, shining; wings dusky at tips, with the usual pale spot before the darker apical margin; legs ferruginous, with the coxae, femora and tibiae more or less black behind; abdomen varied with ferruginous, shining, a yellow band on segments 1 — 5, all more or less interrujjted in middle, that on first segment narrow and undulate anteriorly, sometimes subobsolete, that on second seg- tnent broad laterally and narrowed within, all slightly indented on each side posteriorly, those on fourth and fifth sometimes enclosing a fuscous spot; venter ferruginous, sometimes spotted with yellow at apex. Length .32 — .35 inch. Hah. — Colorado, (Ridings). Three specimens. Nouiada Crotcliii. — 9 -—Head opaque, black, thickly clothed with a short pale pubescence, lower corners of face, anterior margin of clypeus, labrum, base of mandibles and spot at summit of each eye, whitish; anterior and posterior orbits obscurely ferruginous; antennae fulvo-testaceous beneath, third joint a little shorter than fourth, both together being longer than scape TRANS. AMER. ENT. SOC. VII. (11) MARCH, 1S78. 82 E. T. CRESSON. which is narrowed at base; thorax densely punctured, dull ferruginous, the sides and metathorax thickly clothed with pale pubescence, the sutures of thorax, stripe on middle of mesothorax, pleura beneath and most of metathorax black; dot on each side of collar, spot on each side before scutellum, two spots on postseutellum, spot on each side of metathorax nearly obscured by pubes- cence, tubercles and an obscure spot on pleura, whitish ; scutellum subbilobate, not very prominent; wings narrowly fuscous on apical margin; legs ferruginous, the eoxse, femora and tibiae behind, and the tarsi more or less black; knees, tips of tibiae and line or spots on four posterior tarsi white ; abdomen oblong, shining, ferruginous, varied with black at base of the segments, segments 1 — 5 each with a white band dilated laterally and narrowed medially, enclosing on each side a small ferruginous or fuscous spot, the band on second segment sud- denly dilated on the sides; venter white varied at base with dull ferruginous. Length .40 inch. Hub. — Fort Tejou, California, (Crotch). One specimen. 9foinai marginatum.— '^ J. — Pale yellow, smooth and polished; flagel- lum pale fulvous, fuscous above and at tip; mesothorax greenish- fuscous ; collar strongly bilobate; wings yellowish-hyaline, faintly dusky at tips; legs immaculate; abdominal segments above broadly margined at apex with black, those on the apical segments of the male dilated in the middle; venter faintly banded with fuscous. Length .30 — .35 inch. Hah. — Mexico, (Sumichrast). Two specimens. Philerenius aniericaiius.— '^ 9.— Form robust, black, finely punc- tured; middle of face, margins of the thorax above, two short lines on anterior middle of mesothorax, line encircling the scutellum and tubercles, and sides of metathorax, clothed with short cinereous pubescence; scutellum bilobate, the lateral teeth short and blunt; tegulse dull testaceous; wings faintly dusky at tips; knees, tips of tibiae and the tarsi ferruginous; abdomen short, convex and nearly globose %, longer in 9; a large lunate patch on each side of first segment broad and confluent at base, and a band on apex of the three or four following segments, interrupted in the middle on second segment, composed of short appressed cinereous scale-like pubescence; venter brown, pale at tip. Length .30 inch. Hih. — Canada, (Saunders) ; Colorado, (Morrison). Two specimens. This and the next species have much the appearance o^ Epeolus com- pactus described below. Phileremiis inontanus. — %. — Form short, robust, compact, black; face, anterior margin of mesothorax, posterior margin of scutellum, post- scutellum, sides of metathorax, and patch beneath tegulse, clothed with a dense cinereous pubescence; antennae short, entirely black; mesothorax finely punctured, shining, with several longitudinal impressed lines in front; scu- tellum very slightly impressed medially; tegulse dull testaceous; legs robust, clothed with a pale subsericeous pile, tarsi pale testaceous at tips; abdomen short, convex, subglobose, a large lunate mark on each side of first segment broadly confluent at base, a band on apex of second segment interrupted on disk, four spots on third segment, those on the sides small, and two spots on apical middle of third and fourth segments, all composed of short appressed cinereous scale-like pubescence. Length .25 inch. Hah. — Nevada, (H. P^dwards). One specimen. Pliilerenius fulviventris. — %. — Black, opaque, finely punctured, clothed with a short, pale pubescence, most dense on the face, sides of thorax, around scutellum and on metathorax; mesothorax rather broadly and deeply impressed on anterior middle; scutellum obtusely bilobate; tegulse and the four anterior legs in front more or less ferruginous; wings fuscous, with a pale spot before apex; abdomen opaque, dull fulvo-ferruginous, black at extreme base and apex, apical margin of the segments with a narrow line of short whitish pubescence, dilated on each side of the disk on segments 3 — 5. Length .30 inch. Hub. — California, (Henry Edwards). One specimen. 84 E. T. CRESSON. Phileremns? pulchellus. — 9- — Black, opaque, densely punctured; head broader than thorax; face, sides of occiput, margin of thorax above, sides of metathorax and large patch beneath wings clothed with short appressed white scale-like pubescence; mandibles, tegulse and tubercles, ferruginous; flagellum brown; win^s hyaline, faintly dusky at tips, marginal cell as long as the two submarginal cells, rounded at tip, second submarginal cell less than half the length of the first, narrowed nearly to a point toward marginal, receiving the second recurrent nervure a little beyond the middle, the first recurrent is received by the first submarginal cell near its apex or junction with the second; legs with short pale glittering hairs, the femora at tips and the tibiae more or less varied with ferruginous; tibise spinulose on outer edge; abdomen ovate, very densely and confluently punctured, opaque, fulvo-ferrugi- nous, the segments above stained with black on the middle, a circular line on each side of first segment, and four equidistant spots at base of segments 2 — 5 composed of appressed white scales; fifth segment loni^itudinally carinate on the disk; ventei* fulvo-ferruginous, spotted laterally with fuscous, apical seg- ment emarginate at tip. Length .20 inch. ? %. — Like the 9 except that the ferruginous color entirely disappears and the head, thorax and abdomen above are yellowish-brown; apical margin of abdominal segments obscurely pale testaceous. Length .23 inch. Huh. — Colorado, (Ridings). Three specimens. This differs from the preceding species in the neuration of anterior wings, the first and second submarginal cells receiving each a recurrent nervure. Epeolus (listiuctus. — 9 . — Black; head, thorax, legs and venter with a short sericeo-cinereous pubescence, more obvious in certain lights on sides of face, sides of pleura and of metathorax; upper margin of prothorax, narrow lateral and apical margins of mesothorax, two short lines on anterior middle, entire first segment of abdomen above except base and small slightly trans- verse spot on disk, and apical margins of segments 2 — 4, buff, the latter shading into cinereous; fifth segment entirely cinereous in certain lights, the dorsal space very finely punctured; mesothorax and pleura very coarsely punctured; scutellum subbisinuate behind, with very long acute slightly incurved lateral teeth; anterior legs varied with pale ferruginous; wings subhyaline, broadly margined at tip with black; last ventral segment convex, acuminate at tip. Length .50 inch. %. — Face, metathorax and pleura densely sericeo-cinereous; labrum, tegulse, anterior legs and all the tarsi, ferruginous; wings darker; scutellum bilobate, lateral teeth more strongly incurved; apical margin of abdominal segments five and six whitish. Length .45 inch. Hah — Georgia, (Ridings). Two specimens. A very distinct species. Epeoliis bai'diis. — 9- — Black; head short, with brown pubescence, not pale around base of antennae; labrum, tips of mandibles, base of antennce, tubercles, tegulse, scutellar teeth and legs, ferruginous; tibial spurs black; upper margin of prothorax, narrow lateral and posterior margins of meso- thorax, two short lines on anterior middle, sides of metathorax, margins of tubercles, first abdominal segment above (except extreme base and small transverse spot on middle connected with base by a narrow line), and apical margins of segments 2 — 4, not dilated laterally, all buff; wings fuscous, darker AMERICAN HYMENOPTERA. 85 on apical margins; mesothorax and pleura coarsely punctured; scutellar teeth broad and prominent; apical middle of fifth abdominal segment more finely punctured than remainder of the segment; last ventral segment convex and acuminate at tip. Length .45 inch. Hah. — Texas, (Belfrage). One specimen. In the ornamentation of the abdomen this species strongly resembles distincfvs, but other- wise they are widely different. Epeolus zacatecns. — 9- — Black; spot surrounding base of each an- tenna, line on upper margin of prothorax, line before scutellura, line on postscutellum, patch on each side of metathorax, posterior margin of tubercles, four posterior coxae and the tibiae exteriorly, silvery-white; large patch on each side of first segment of abdomen, emarginate within, a small patch on each side of second segment and narrow apical margins of segments 2 — 4, white, tinged with yellow ; a whitish spot on each side of fifth segment; wings tinged with fuscous; lateral teeth of scutellum long and subacute; last ventral segment convex, broadly rounded at tip. Length .60 inch. Hah. — Mexico, (Sumichrast). One specimen. The pale markings of abdomen are almost white. Epeolus conoavus. — ?. — Large, robust, deep black; head entirely black; posterior margin of prothorax, broad anterior margin of mesothorax as far back as tegulse, narrow line over tegulse continued round before scutellum, tubercles and spot behind, broad band beneath scutellum, a large bilobed spot on each side of metathorax, broad band on first abdominal segment more or less interrupted medially by a transverse black mark, and apical margin of second, third and fourth segments, that on second broadly dilated laterally, yellowish- white or pale buff; mesothorax and pleura very densely punctured ; lateral teeth of scutellum short and blunt; wings fuscous; apical segment of abdomen sparsely punctured before apex; last ventral segment prolonged beyond dorsal segment, longitudinally concave, the tip produced and slightly incurved. Length .50 — .60 inch. Hah. — New Mexico, (Yarrow) ; California, (H. Edwards) ; Georgia, (Ridings) ; Louisiana, (Dr. Lewis). Five specimens. Readily dis- tinguished by the last ventral segment being produced and concave. Very much like 7-emigatus Fab. in ornamentation ; but besides the different shape of the last ventral segment, that of the third sub- marginal cell is also quite different, being, in remigatus, much broader at its -junction with the marginal cell. Epeolus robustus. — 9 • — Large, robust, black; sides of face, above an- tennae and posterior margin of head, fulvous; upper margin of prothorax, broad anterior margin of mesothorax, continued narrowly on the sides and before scutellum, patch beneath tegulae covering the tubercles, narrow posterior margin of scutellum, postscutellum, triangular patch on each side of metathorax, spot on four posterior coxae, tibiae and tarsi exteriorly, first segment of abdomen above, (narrowly interrupted medially and squarely emarginate within, form- ing a broad transverse black line), broad apical margin of segments 2 — 4, that 86 E. T. CRESSON. on second segment abruptly and squarely dilated on each side, and that on third segment slightly and acutely dilated on each side, all yellowish ; clypeus flattened, shining and sparsely punctured; scutellum rather strongly bilobate, the lateral teeth very small; wings fuliginous, apical margins darker; last ventral segment flattened, with apex broadly rounded and slightly recurved. Length .65 inch. Hah. — New Mexico, (Yarrow). The single specimen before me has been in alcohol, and the pale markings are obscured; the smooth flattened clypeus and face, not at all prominent between antennse, and the broad, flattened, recurved last ventral segment, will readily distinguish this fine species. Epeoliis nevadensis. — 9. — Deep opaque black; clypeus and face smooth, polished, sparsely punctured; space between antennae quite promi- nent; band above base of antennae, upper margin of prothorax, margins of mesothorax, broad in front, tubercles, spot beneath tegulse, posterior margin of scutellum, postscutellum, sublunate mark on each side of metathorax near base, spot on posterior coxae, femora exteriorly, narrow posterior margin of abdominal segments 1 — 4, (that on one and two abruptly and squarelj^ dilated on each side, and on first segment continued inwardly and nearly meeting on the disk, leaving a broad black abbreviated band on the disk) all fulvous-yel- low; fifth segment shining at base, apex densely punctured and clothed with short dense black pubescence, pale sericeous in certain lights; venter opaque, last segment convex, narrowed gradually to apex which is obtuse; scutellum faintly ernarginate behind, lateral teeth obsolete. Length .55 inch. Hah. — Nevada, (H. Edwards). One specimen. The thorax is marked as in 7-emi(/atu!i, but the last ventral segment is acuminate at tip. and the face and clypeus are polished. Epeolus californicus. — $•■ — Small, black, almost entirely covered with a bright citron-yellow appressed scale-like pubescence; band on vertex, labrum, mandibles, antennae, anterior margin of pleura, mesothorax except lateral and posterior margins, and two stripes on middle, band on scutellum, narrow band on first abdominal segment, broader band at base of second, pointed and oblique laterally and narrow basal margin of segments 3 — 5, slightly dilated on each side on three and four, and in middle on five, all black; scutellum bisinuate. with short broad lateral teeth; last ventral seg- ment convex and broadly rounded at tip. Length .40 inch. Hah. — California, (H. Edwards). A very distinct species. Epeolns SCelestus. — 9. — Black; patch around base of each antenna, upper margin of prothorax, lateral and apical margins of mesothorax, two short lines in front, posterior margin of scutellum, postscutellum, a spot behind insertion of posterior wings, a spot beneath tegulse covering tubercles, a spot on each side of first abdominal segment, deeply and squarely emarginate within, the points nearly meeting on the middle, and narrow apical margins of segments 2 — 4, that on second slightly interrupted medially, all p,5ile buff; third joint of antennae reddish; mesothorax and pleura densely and conflu- ently punctured; scutellum bisinuate behind, lateral teeth prominent, obtuse; AMERICAN HYMENOPTERA. 87 legs more or less tinged with brown-ferruginous, tibial spurs black; wings hyaline, apical margins dusky; fifth abdominal segment brownish at tip which is not more coarsely sculptured than remainder of the segment; venter nude, densely and finely punctured, apical segment depressed, apex broadly rounded, almost truncate. Length .48 inch. Hah. — Texas, (Belfrage). Two specimens. EpeolliS totoiiacus.— 9 •— Black; face around base of antennae, patch behind posterior wings, coxae more or less and spot on each side of fifth abdominal segment, silvery cinereous; upper margin of prothorax, lateral margin of mesothorax more or less interrupted, two short lines on anterior middle, posterior margin of scutellum, postscutellum, tubercles posteriorly, basal, lateral and apical margins of first segment of abdomen, interrupted medially and rather broad apical margins of segments 2 — 4, slightlj' inter- rupted on second, all bright buff; basal joint of flagellum ferruginous; meso- thorax and pleura finely and densely punctured; scutellum subbisinuate be- hind, with short broad lateral teeth; wings subhyaline; legs black or brown, with cinereous pubescence; last ventral segment rather broadly rounded at tip. Length .40 inch. Hah. — Mexico, (Sumichrast). Two specimens. Epeolus texanus. — %. — Black; face silvery; upper margin of pro- thorax, lateral and posterior margins of mesothorax, two short stripes on anterior middle, apical margin of scutellum, postscutellum, semicircular line on each side of metathorax, tubercles, large spot beneath tegulse, coxse more or less, basal half and broad lateral and apical margins of first abdominal segment, slightly interrupted medially, narrow apical margins of segments 2 — 6, and a spot on each side of second segment, all white or tinged with buff; vertex and occiput with pale pubescence; mesothorax and pleura densely and confluently punctured; scutellum bisinuate behind, lateral teeth short; legs, except coxse, ferruginous, tibial spurs black; wings hyaline, dusky at tips; apex of venter sometimes ferruginous, apex of fourth and fifth segments with a fringe of curved black hairs; sometimes the anterior margin is broadly cinereous. Length .45 — .55 inch. Hah. — Texas, (Belfrage). Five specimens. Epeoliis occitleiitalis. — 9- — Black; patch around base of each an- tenna, cheeks, upper margin of prothorax, lateral and posterior margins of mesothorax, two short stripes on anterior middle, line at base of scutellum, its posterior margin, postscutellum, metathorax except triangular space at base, tubercles, a large irregular patch beneath tegulse, coxse more or less, first abdominal segment except a rather broad band on middle abbreviated laterally, rather broad apical margins of segments 2 — 4, a triangular spot at sides of second segment confluent with apical band, spot at sides of fifth segment, and apical margin of second and third ventral segments, all white or pale buff; tegulse and legs ferruginous; wings hyaline, with dusky apical margin; mandibles and third joint of antennae sometimes ferruginous; vertex, occiput and sides of postscutellum, with long pale pubescence; scutellum strongly bisinuate behind, with stout prominent lateral teeth; mesothorax and pleura very densely punctured; spurs of four posterior tibise black; last ventral segment convex, broadly rounded at tip. Length .40 — .50 inch. 88 E. T. CRESSON. ^. — Face and pleura beneath silvery; abdominal segments 2 — 6 with apical whitish band, the lateral spot on Becond segment sometimes much reduced or wanting; sometimes the mandibles and labrum are more or less ferruginous, and the pleura and metathorax are occasionally entirely whitish or silvery; otherwise like the 9* Length .40 — .45 inch. Hah. — Colorado, (Ridings). Twenty specimens. EpeoliiS tepanecus. — %,. — Deep black; face, oblique mark on each side of metathorax and coxse silvery-white; posterior margin of prothorax, line over tegulse, line behind tubercles, angular, mark on each side of first abdominal segment, broader laterally and sometimes nearly confluent on the middle posteriorly, and a narrow band on apex of remaining segments slightly interrupted medially, all cinereous, sometimes yellowish-cinereous; a silvery cinereous band on apex of second and third ventral segments; third and fourth ventral segments fringed with long curved black pubescence; meso- thorax shining, sparsely punctured; outer edge of tegulse dull testaceous; wings dark fuscous. Length .55 inch. Hah. — Mexico, (Sumichrast). Three specimens. This has much the general appearance of donatus Smith. Epeoliis mercatus Fabr. Syst. Piez. p. .389. — 9 • — Black ; face around base of antennse, upper margin of prothorax, lateral margin of mesothorax, interrupted on each side of tegulse, two short lines on anterior middle, pos- terior margin of scutellum, postscutellum, patch on each side of metathorax, posterior margin of tubercles, sublunate mark on each side of pleura, patch between intermediate coxse, rather narrow basal, lateral and apical margins of first abdominal segment, narrow apical margins of segments 2 — 4, that on second sometimes narrowly dilated on each side, and sides of fifth segment, all cinereous or pale buff; scape, labrum, mandibles, tegulse, trochanters, femora beneath, tibiae and tarsi, ferruginous; mesothorax and pleura densely and confluently punctured; scutellum subbisinuate behind, with short, promi- nent lateral teeth ; wings pale fuliginous; tibial spurs black; last ventral seg- ment very broadly rounded at tip, almost truncate. Length .40 inch. '^ . — Face, thorax beneath, sides of metathorax, coxse, tibiae, tarsi and middle of venter silvery; apical margins of abdominal segments five and six almost white; wings paler; labrum, mandibles, scape and femora entirely often ob- durated. Length .35 — .40 inch. Hib. — Virginia, Georgia, (Ridings); Texas, (Belfrage). Ten speci- mens. This is probably the true meraifus, although the very short description given by Fabricius will apply quite as well to several other species, not found, however, east of the Mississippi River. Epeoliis lectus. — ^9- — Black; face, cheeks, thorax beneath, coxse, sides of fifth segment of abdomen and venter densely cinereous; upper margin of prothorax, lateral and posterior margins of mesothorax, two lines on anterior middle, scutellum behind, postscutellum, sides of metathorax, basal half and narrow apical margin of first abdominal segment, confluent laterally, narrow apical margins of segments 2—4 and apical margins of ventral segments 2 — 4, all yellowish-cinereous; base of antennse more or less, tegulse and legs, fer- ruginous; wings hyaline, dusky on apical margins; mesothorax and pleura AMERICAN HYMENOPTERA. 89 coarsely and sparsely punctured; scutellum bilobate, with short prominent lateral teeth; tibial spurs black; abdomen strongly punctured, middle of fifth segment not at all roughened; last ventral segment tinged with ferruginous, convex and rather broadly rounded at tip. Length .40 inch. Hah. — Kansas, (Dr. Wilson). One specimen. « EpeolllS agnatus. — %. — Small, black; face and clypeus clothed with a dense appressed silvery pubescence, on cheeks and occiput the pubescence is more sparse; thorax beneath, upper margin of prothorax, lateral and posterior margins of mesothorax, two lines on anterior middle, posterior margin of scutellum, sides of metathorax, basal and apical margins of first abdominal segment confluent laterally, narrow apical margins of segments 2 — 6 above and two and three beneath, cinereous; remainder of segments five and six above and beneath brown; basal joint of flagellum, tegulse and legs more or less yellowish-ferruginous, tibial spurs yellowish; mesothorax, scutellum and pleura coarsely not densely punctured, abdomen stronglj'- punctured; scutellum bilobate, with broad prominent lateral teeth; wings hyaline, fuscous at tips. Length .40 inch. Hah. — Dakota Territory, (Ulke). This may be the % of lecfuii, although the tibial spurs are pale; the thorax and abdomen are sculptured much alike. Epeolus conipactus. — 9 •—Small, compact; black; face around base of antennpe, upper margin of prothorax, lateral and apical margins of meso- thorax, one or two spots on anterior middle, broad apical margin of scutellum, postscutellum, sides of metathorax, large spot beneath tegulse, pleura beneath, coxae, basal half and broad lateral and apical margins of first abdominal segment, broad apical margins of segments 2 — 4, dilated laterally and slightly interrupted medially, base of fifth segment, and apical margins of ventral segments 1 — 4, all more or less whitish or pale buflf; tegulse, tubercles and legs ferruginous; mandibles, labrum and base of antennas sometimes more or less ferruginous: vertex and occiput with long pale pubescence; mesothorax and pleura densely and confluently punctured; scutellum subbisinuate behind, lateral teeth short, obtuse ; tibial spurs ferruginous ; last ventral segment sub- convex, broadly rounded at tip; wings hyaline, dusky at tips; abdomen short, robust. Length .35 inch. •^ . — More compact, with abdomen almost globose; markings the same as 9 except the fifth and sixth segments are broadly whitish at tip; sometimes the second segment has a more or less distinct whitish lateral spot. Length .25 — .35 inch. Hah. — Texas, (Belfrage) ; Colorado, (Ridings, Morrison). Four- teen specimens. Easily distinguished by the short compact form, and by the ferruginous legs having concolorous tibial spurs. Epeolus aztectlS. — 9- — Black; face around base of antennae, and sides of fifth segment of abdomen cinereous; upper margin of prothorax, lateral and posterior margins of mesothorax, posterior margin of scutellum, postscutellum, patch on each side of metathorax behind posterior wings, posterior margin of tubercles, oblique line on each side of pleura, large spot on each side of TRANS. AMER. ENT. SOC. VII. (12) MARCH, 1878. 90 E. T. CRESSON. first segment of abdomen, obtusely emarginate within and nearly meeting on apical middle, and narrow uninterrupted apical margins of segments 2 — 4, pale buff; basal joint of flagellum ferruginous; mesothorax and pleura finely and densely punctured; scutellum subbisinuate behind, with short lateral teeth; wings pale fuscous; legs brown, coxae, tibiae and tarsi with cinereous pubes- cence; last ventral segment broadly rounded at tip. Length .45 inch. Ilab. — Mexico, (Sumichrast). Two specimens. Epeolus mexicanus. — % 9-— Black; face, line on occiput, posterior margin of prothorax, tubercles, line over tegulse, continued before scutellum, narrow line behind scutellum, sides of metathorax, lunate patch on pleura, large obliquely sublunate patch on each side of first abdominal segment, and rather broad band on apex of segments 2—4 J, 2 — 6 %, all covered with a dense appressed yellowish pubescence, sometimes changing in certain lights to silvery-white; the band on prothorax and markings of abdomen varies from pale yellow to dark buff; legs, extreme sides of abdomen, broad on apical segment 9 j and venter clothed with a very short fine cinereous pile; base of flagellum and tegulse ferruginous; mesothorax closely and confluently punc- tured; wings varied with dusky, darker on apical margin, yellowish at base; tibiae and tarsi often more or less varied with ferruginous; apical ventral segment of 9 convex and broadly rounded at tip; % with a band of cinereous pubescence on ventral segments two and three, and fringe of long yellow pubescence on four and five. Length .35 — .45 inch. Hab. — Mexico, (Sumichrast). Sixteen specimens. Kesembles/wmv!^ pennis Say, but readily distinguished by the obliquely sublunate pubes- cent patch on each side of first abdominal segment and the bands on remaining segments except the last; fumipennis has a transverse sub- lunate mark on each side of the first segment and a band only on the second, and the scutellum and legs are always ferruginous. £l>eolu!