HARVARD | UNIVERSITY: LIBRARY OF THE MUSEUM OF COMPARATIVE ZOOLOGY. SS) c- Cee 418% - Manske ti BIS. a a \y TRANSACTIONS OF THE AMERICAN ENTOMOLOGICAL SOCIETY. VOL. XXIV. HALL OF. THE ACADEMY OF NATURAL SCIENCES OF PHILADELPHIA, LOGAN SQUARE. 1897. VRANE UJ YE OICOS C00 GUL 1). SOUR ON ha PRESS OF P. C. STOCKHAUSEN. PHILADELPHIA. ise On See ERS: PAGE Bayks, NATHAN. New North American Neuropteroid Insects . . el CockHRELE, T. D: A. New and Little-known Bees . ; . . y 144 The Bees of the genus Halictus found in New Mexico . 163 Davis, G. C. A Review of the Ichneumonid Subfamily Tryphonine . 195 & Descriptions of new species of Trigonalidee, Stephanidee and Ichneumonide . : f ‘ : d . 849 Dyar, Harrison G. A Generic Revision of the Ptilodontidze and Melalophide. 1 a HaAywarp, RoLanp. On the Species of Bembidium of America North of Mexico. : : : ; : : : oe Lewis, H. W. Vespine of the United States and Canada. - 169 Rear ee @ bE Nig aM Sh Baa pects is! 8 Sg x = | ND a | VOLUME XXIV, NUMBER 1. ea TRANSAGTIONS JUN 2 1897 OF THE | | GSE CBG Sp ee ol gS Bf | ENTOMOLOGICAL SOCIETY ES ag JANUARY—MARCH, 1897. || NE ai aI PUBLISHED QUARTERLY BY THE AMERICAN ENTOMOLOGICAL SOCIETY AT THE ACADEMY OF NATURAL SCIENCES, PHILADELPHIA. | OS SUBSCRIPTION PRICE FOUR DOLLARS PER ANNUM, Ks ee JUN 2 1897 TRANSACTIONS OF THE AMERICAN ENTOMOLOGICAL SOCIETY. MOLRU ME XY Xry. A GENERIC REVISION OF THE PTILODONTIDA AND MELALOPHID £. BY HARRISON G. DYAR. Under these names I include the Notodontidz as recently recog- nized. The family as such has been revised by the late Mr. Neu- moegen and myself (Trans. Am. Ent. Soc. xxi, pp. 179-208). The arrangement of species there set forth needs scarcely any change, but a few of the generic terms require correction when we come to compare the European fauna. The principal error is due to my having selected the wrong type for the genus Notodonta. I propose here to briefly bring together the generic terms used for these moths as far as concerns the fauna of North America, Europe and India. It is possible to include India from the valuable work of Mr. G. F. Hampson. The Ptilodonts and allies represent a group of closely intergrading genera, leading up from what is probably the lowest type of the Bombyces. The group may be defined as Noctuid moths with 3-branched cubital vein and frenulum, of robust build, vein iii of secondaries arising beyond the cell. The lowest genera (e. g. Gluphisia) present smooth larve with simple setze; others have variously humped or otherwise modified bodies. Then follows a group in which the moths tend to lose the tongue, although not sharply marked off by this character. The larvee, however, are hairy; that is, they have developed warts and secondary hairs The wart formation is peculiar, being characterized by three warts above the stigmatal wart on the thorax, and thus contrasted with the par- TRANS. AM. ENT. SOC. XXIV. (1) JANUARY, 1897, Z AMERICAN LEPIDOPTERA. allel wart formation in the Arctiid allies, another great branch of the Bombyces. At first these warts are in line, but soon we reach forms (e. g. Apatelodes) in which the central wart is moved back out of line. At this point a large group of moths in India has di- verged from the type in losing one vein on the fore wings. These are the true Eupterotide, and form the highest group of the Ptilo- dont allies. The line is, however, almost directly continued by the European genus Lemonia (frenulum gone) into the Lachneide (cubitus 4-branched), the larvee remaining true to type, but becoming gradually more specialized to culminate in the Lachneids. Therefore, I would make three groups or families, from the moths most nearly related to the Ptilodonts as follows: Fore wings 12-veined. Tongue present; larve simple haired...-...--..-+.+-+40+ Ptilodontidz. Tongue often absent: larvee with warts..----.+-+++.+eeee Melalophidz. Fore wings 11-veined, tongue absent; larvee with warts...... Eupterotidz. The first two families will be treated here; the third will be found in Hampson’s “ Moths of India,” vol. i, and I would only change his account by removing the genus Cnethocampa. I shall include the genera of the Ptilodonts and Melalophids in a single synoptic table, since the families present no sharp characters in the moths. Dr. Packard includes then both in his Notodontide, and describes the Melalophid larva as a “hairy Notodontian.” This is really what they are, and I differ from Dr. Packard only in making the character of family importance. The Melalophide will thus stand on the same footing as the Apa- telidze, and it is open to those who so prefer to give both these groups less than family rank. I should probably do so myself were I not especially interested in the larval characters. The characters heretofore used for genera are in so far arbitrary that they often separate closely allied species. However, in default of a natural grouping I adopt the characters used by Hampson. They are not more arbitrary than those which I used in the paper with Mr. Neumoegen, while they allow of more easily correlating the Indian genera. I am indebted to Mr. A. R. Grote for kindly confirming the types of many of the genera. HARRISON G. DYAR. o Key to the Genera. 1. Fore wings with no tuft of scales on the inner margin -.---+.-+.+eseeeeee 2: Fore wings with a tuft of such scales .. 1... eee e eee ee cee erent eee eee eee 44, Fore wings with such a tuft and another at the outer angle.........+....52. 2. End of abdomen without a tuft of long scales.... 1. eee eee ee eee cece eens 3. End of abdomen with such a tuft of scales...-.. see cece eee eee eee eens 55. 3. Hind wing with vein 5 (vz) present ....-.- see ee cere cece eee e teen ne eeees 4, Hind wing with vein 5 absent «2.1.5. es ee esc c ence ene se steerer eens ecees 42, 4, Primaries produced and narrow... .-. sees eee e cece rece eee eet eee e eee eeees 5. Primaries not produced and broad\e« +06 .cee eee tee cece cee este ne rece ees 19. Primaries with the inner margin produced into a triangular lobe. Norraeca. Primaries with the inner margin produced into a rounded lobe.. Turnaca. Primaries with the inner margin evenly rounded .........++sseeeeseneeee 6. GapA ex Ole PIM ATICS: ACUILE rete relaiey jas reve a\o aisle ce fatelate si atisyeial lela niet e)= efelniclaleysleleleieve) vic is AMEX MO Les LLIN ATIES a1 OUI CU erereevedeteerenerel aVerecesene tere ene tei oie eeseret a) tlabalsveregs)@ialalo ine ist 7%. PrimarieS Very loM ges. o0 00s. eee eee wee een sens ce cece esse receescnesere 8. IRPiMmaiesiSh Or believe scaysie ereve.c iszere cuose e's ae ieeousiea ane siegsl ates aw aca wessierersine' aie Oatgye 10. 8. Primaries with an accessory Cell .....-.-+ eee eee eee eee eee eee Baradesa. INCCESSOTYECE lb DSCM iets eters eta ie te voye te euler = edeyensevole sous oie lehcra celecie elie eieNereiis) isis 601 e161 9. 9. Antenne of % pectinated to the tip.....---.----. esses eee ee eee Rachia. Antenne pectinated on the basal two-thirds. ..-...2......-+5.. Hoplitis. 10. Palpi upturned, reaching above vertex of head .......-...--. ee eeeeeeees 11. IPEYI a WOM REO Mia's Onidncda Oooud coun UCU GoD aan am eooucomdsoan ond on Ramesa. 11. Primaries with a short accessory cell, vein 10 (iiiz) given off after it.Pydma. * Accessory cell long, vein 10 given off from it.......-....eeecec cer eeseees 12: NOmmAte rin ces ote oat ASC Cull ate ax-ceye tetera ereveu to leieneleiet «ay ere eilsslouels0yo/e e)s\les/e\i 4 < Ceira. Antennee lengthily bipectimate...........secccce ence cece ee cceen Torona. 13. Accessory cell absent ....- 0... eee e ee cee eee cece eeeee Sededereicyere te Ellida. NC CESSO IVE Cel lap CSeM bet isan veg aetlsine orese/Siys «nein See whee oe eet ele donde 14. 14. Vein 10 (iiiz) arising from the top of the accessory cell .................. 15. Vein 10 arising beyond the tip of the accessory cell......... efoatanetalis\elicietenels 18. 15. Vein 5 of primaries from the center of the cell ...-.......-ceccseeeeeeee 16. Vein 5 from the cross-vein near the upper angle of the cell..... Damata. 16. Palpi slight and fringed with hair...-............sec-ecseses, Niganda. Pali pigbNOAME AM MELO UN OM x: eves ete sicest « sievaneus s[oc<1= mie.) wrens) erevene eee none 32. Antenne of % pectinate for the basal two-thirds .............eeseeeeees 3a: Antenne of % broadly pectinated to the tip..............6. Hyparpax. 32. Primaries acute ab apex ei seis esis. cass <3 2.0 cts s simictew sme s wise) svete Anticyra. Primaries: ound edeatsapexcircsss te seo s:e ciate in contra-distinction from those in which they are situated on the third stria. “third interval with dorsal punctures,’ TRANS. AM. ENT. SOC. XXIV. FEBRUARY, 1897. 38 AMERICAN COLEOPTERA. The form of the elytral humeri, whether subangulate or rounded, is a character of considerable importance. The elytral strize, whether entire or effaced at tip or nearly obso- lete, have been of service, when properly subordinated to other characters. The eighth stria (counting the sutural as the first), whether or not distinct from the margin, has also been of use in the definition of groups. The species themselves are often quite difficult to define, especially in groups v, vil, ix, xii and xvii. Moderately large series of all but our rarest species, amounting in some instances to several hundred speciinens, have been studied. No new species have been described from uniques, although there are several in my own and other col- lections which cannot be satisfactorily placed. Less harm I believe will be done, however, by postponing the description of a few doubtful species than by increasing our already too large list of synonyms. In reference to this subject I cannot do better than to quote the fol- lowing passage from Dr. Horn’s recent paper on Heterocerus* : ‘The more specimens examined the greater the difficulty in defining the species and the greater the necessity for the use of judgment in placing specimens.” This is equally applicable to Bembidiwm. With these preliminary remarks we may divide the genus into the following groups: Byes small, flattened! «ss. cisrawse.c ere, e 0 devviaiciee. svsteone © oleteusiele sisisiere <) stepeRse-tneteasTerenens Tike Eves large, or moderately large, CONVER «+0. smslecee © «eee oe @m nivie ohare sclelshete 2: 2. Elytra with the humeri subangulate, third interval with dorsal punctures, eighth stria distinct from the margin ..... +. see eeee ee ee eee eee neces 3. Elytra with the dorsal punctures on the third stria ...--..-+.+-see eee eens 4. Elytra with the humeri rounded, third interval with dorsal punctures --. -6. 3. Mentum with a short, bifid tooth; strize of elytra more or less abbreviated behind. Elytral intervals with irregular rows of sparsely placed setigerous punc- TURES peneveratenetslecere’ art iaeist siersiole fer clole eiciel ofehcioleleket sMelreeste Group i. levigatum. Elytra with two dorsal punctures on the third interval.Group ii. nitidum. Mentum with a large, entire tooth: strie of elytra entire. Elytra with two impressed quadrate fovez on the third interval, each en- closing a dorsal puncture .....--..-.e sees seen eee Group iii. littorale. Elytra without trace of fovee ; dorsal punctures two-Group iv. coxendix. 4. Eighth stria of elytra indistinct from the margin, humeri rounded........ 5. Eighth stria of the elytra moderately near. but distinct from the margin, dorsal punctures two. Humeri of elytra subangulate, the strie entire....-Group v. honestum. Humeri of elytra rounded. ......-+.+sse esses eeeeee Group vi. concolor. * Trans. Am. Ent. Soc. xvii, p. 16. ROLAND HAYWARD. 39 5. Elytra with two dorsal punctures. Thorax trapezoidal, scarcely convex, the basal fove distinctly bistriate, the outer stria as long or longer than the inner; legs dark, Group vii. planatum. Thorax trapezoidal, scarcely convex, the basal fovez unistriate or feebly bistriate with the outer stria very small; legs rufous or testaceous, the femora rarely darker. ..++-+e+eeeseeeeeeeee Group viii. transversale. Thorax subcordate or cordate, convex, basal fovez bistriate. Group ix, ustulatum. Elytra with three dorsal punctures... .-+..s+e+e+e6- Group x. ricksecKeri. @» Je lhhineilihteawawienunii con boodunco cen Oo oob co aonigneo ocd ond ocrld 4 mod "ie Humeral line hamate uniting with the fifth stria, which is entire; frontal TEL ETL O TINIE sotsel etre ewetiel etstettelsresaet ailayleterielelerielets) sieuaietei eile Group xix. Hop eee 7. Elytra with two dorsal punctures... +--+ se cece eee cece eee tee eee e ree eene 8. Elytra with three dorsal punctures, all the striz entire; frontal striee normal. Group xi. scudderi, Elytral intervals with irregular rows of small, sparsely placed setigerous : punctures, all the strive abbreviated behind ; frontal strie normal. Group xviii. semistriatum. QUBEGrONGAl: SESE MOTI A listers cis sc eve terns 61s Tele 6: ecaiie ov e\ello-cilore ouesicioie: a)ie.eue ie euevieleyene:ererede\ 9. Frontal strie double, often convergent ...- +... see e cee cere cece cere ec eeeee 10. 9. Elytra distinctly striate with at least the first and second striz entire; head often alutaceous ...-... eee creer ee eee eeee ---Group xii. variegatum, Elytra obsoletely striate, all the strie abbreviated behind. Group xiii. bifasciatum. 10. Frontal striz double, nearly straight, the outer stria entire. Group xvi. sulcatum, Frontal striz double, oblique, the outer stria interrupted. Thorax cordate, pedunculate or subpedunculate. Group xiv. quadrimaculatum. Thorax cordate or subcordate, truncate at base........- Group xv. affine. Frontal strize very oblique, strongly convergent, double, the outer shorter than the inner and less deep, often feeble; thorax cordate. truncate at ASC keaieierevetencver ete closers ovations, -esefevariencvotevsners ies) @anone sisiers:ts Group XVil. assimile. 11. Maxille with the outer lobe bi-articulate; elytra with two dorsal punctures on the third stria ..--.- se ee eee eee ee eee ee eee es Group xx. laticeps. Maxille with the outer lobe with the two joints united; mandibles long, slender, nearly straight; elytra with two dorsal punctures on the third ANE Tne listeuctispeties pe cksl ei ei/eniovenelle:oronaisyevie sete iobetelisiaitel ai o4ei%s Group xxi. oblongulum. Group i. levigatum. Maxillee with the outer lobe bi-articulate; mentum with a short bifid tooth ; frontal strize singie, straight, parallel; eyes moderately large, prominent. Prothorax truncate at base, scarcely obliquely so each side. Elytra with the humeri subangulate ; strize abbreviated behind, rather feebly impressed with large, deep punctures; eighth stria distinct from the margin; intervals with irregular rows of setigerous punctures. This group includes but one species. TRANS. AM. ENT. SOC. XXIV. FEBRUARY, 1897. 40 AMERICAN COLEOPTERA. 1. B. leevigatum Say.—Form robust, convex ; color dark green or bronze’ very shining. Head slightly narrower than the thorax at apex ; palpi testaceous ; antenne about one-half as long as the body, fuscous, the basal joints testaceous. Prothorax subquadrate, slightly wider at base than apex, more than one-half wider than long, with a few sparsely placed punctures at base ; apex feebly emar- ginate; median line fine, entire or abbreviated in front; transverse impressions moderately distinct; basal impressions broad, deep, bistriate, the outer stria small; sides with the margin distinctly reflexed, arcuate in front, at most obso- letely sinuate in front of the hind angles, which are subrectangular and carinate. Elytra less than one-half wider than the thorax, oblong-oval; intervals feebly convex. Beneath nearly black, shining. Legs rufo-testaceous, the femora often and slightly darker. Length .22-.29 inch; 5.5-7.25 mm. An aberrant species, very distinct from the others of the genus. In fact, LeConte erected the genus Hydrium for its reception (Ann. Lye., 1848, iv, p. 453), but later reunited it with Bembidium, from which it does not seem sufficiently distinct for generic separation. It has usually been placed near the end of the genus near B. semi- striatum, with which it has little in common, however, except the arrangement of the dorsal punctures and the abbreviated elytral strie. On the other hand it is allied to B. nitidum by the bifid mentum tooth and the subangulate elytral humeri. I have accord- ingly placed it at the head of the genus. It is subject to but slight variation. In well preserved specimens the sete, arising from the rows of punctures on the elytral intervals are very distinct. It is widely distributed, occurring locally from New Hampshire to Montana and Texas, specimens having been seen from the three States mentioned and from Pennsylvania, South Carolina, Illinois, Iowa, Missouri and Kansas. “ie Group ii, nitidum. Maxillz with the outer lobe bi articulate; mentum with a short bifid tooth; frontal grooves single, parallel; eyes moderately large and prominent. Thorax truncate at base, scarcely obliquely so each side. Elytra with the outer strize abbreviated behind, the eighth distinct from the margin; humeri subangulate; third interval with two dorsal punctures. This group seems in some respects intermediate between the last and the next two. The bifid mentum tooth and abbreviated outer strie of the elytra ally it to the former, while to the (ittorale and coxendi« groups it is related by the number and position of the dorsal punctures. With all three it agrees in having the humeri of the elytra subangulate. ROLAND HAYWARD. 4] But two species are known to me. ‘As here defined B. nitidwin includes both aptum and obliquu/um, the last named having hitherto been retained as distinct. In a large series of specimens, however, the characters on which it was based become evanescent. Our spe- cies may be separated by the following characters : Thorax distinctly wider at base than at apex; elytra very slightly wider than the thorax, distinctly striate; color usually bronzed. Length .18-.28 inch, nitidum Kirby. Thorax as wide at base as apex; elytra about one-half wider than the thorax, the two or three inner strizw distinct but very fine, the others almost or en- tirely effaced ; color black, scarcely eneous. Length .14~.20 inch. erasum Lec. 2. B. nitidum Kirby.—Form robust, slightly convex ; color nigro-zaeous or eneous, very shining. Head rather small, slightly narrower than the thorax at apex; palpi black; antenne about one-half the length of the body, black, more or less rufous at base. Prothorax subquadrate, about one-half wider than long, very distinctly wider at base than apex ; apex slightly emarginate ; median line very fine, extending between the transverse impressions, the anterior of which is rather feeble. the posterior moderately distinct ; basal impressions broad, bistriate, the inner stria larger and deeper than the outer; sides with the margin very narrowly reflexed, arcuate, feebly sinuate in front of the hind angles, which are rectangular and finely carinate. Elytra oblong-elliptical, slightly wider than the thorax, finely striate: strize punctate, the first and sometimes the second entire, the fifth represented by a slight groove at tip, the others abbreviated behind; intervals flat, the third with the first dorsal puncture about one-third from base, the second about one-third from apex. Beneath black, oftev slightly tinged with green, shining. Legs black, or dark piceous, often slightly eeneous, the tibie and tarsi sometimes rufo-piceous. Length .18-.28 inch.; 4.5-7 mm. A very well-marked species, easily recognizable from eraswin by the characters given in the table. It varies greatly in size and the color of the legs is variable as indicated above. In the typical n/- tidum the legs are black, and only the basal joint of the antennze is rufous, this color in some specimens being confined to the under side, while the basal impressions of the thorax have the striz parallel. Most specimens from the Pacific coast differ from more Eastern ex- amples in having the three basal joints of the antennz rufous, the legs piceous, with the tibize and tarsi rufo-piceous, and the inner basal fovea slightly oblique. This is the obliquudum of LeConte. The two forms, however, intergrade. It occurs in Canada and throughout the more Northern portions of the country from the Atlantic to the Pacific, extending along the Pacifie coast from Alaska to California. 3. B. erasums Lec.—Form moderately robust ; color black, scarcely eneous, shining. Head scarcely narrower than the thorax at apex ; palpi black ; antenne TRANS. AM. ENT. SOC. XXIV. (6) FEBRUARY, 1897. 42 AMERICAN COLEOPTERA. about one-half as long as the body. black. Prothorax rather more than one-half wider than long, as wide at base as apex, finely and sparsely punctulate at base ; apex feebly emarginate ; median line either entire or abbreviated in front; trans- verse impressions moderately distinct, the anterior sometimes rather feeble ; basal impressions broad, deep, bistriate ; sides with the margin very narrowly reflexed, arcuate in front, scarcely sinuate behind; hind angles subrectangular, strongly carinate. Elytra about one-half wider than the thorax, with the two or three inner strie very fine, the others almost or entirely effaced ; striee very finely or obsoletely punctulate, the first ouly entire ; intervals flat, the third with the first dorsal puncture about one-third from base, the second about one-third from apex. Beneath black, shining. Legs black, the tibize and tarsi sometimes piceous. Length .14-.20 inch.; 3.5-5 mm. Distinct from the preceding by the thorax not wider at base than apex, with the basal impressions deeper and the hind angles more strongly carinate. The elytra are proportionally wider as compared with the thorax, much more finely striate, with all but the two or three inner strize effaced. It occurs along the Pacific coast from Vancouver Island to Cali- fornia, extending as far East as Nevada. Group iii. littorale. Maxille with the outer lobe distinctly bi-articulate; mentum deeply emarginate, with a large, entire tooth; frontal strize single, deep, parallel; eyes large and prominent. Prothorax subquadrate, as wide or wider at base than apex, truncate at base, obliquely so each side. Elytra with the third interval wider than the others and with two impressed quadrate foveze, each enclosing a dorsal punc- ture; strive entire, the eighth distant from the margin; humeri sub- angulate. The quadrate fovere on the third interval are peculiar to this group, and give an easy means of distinguishing the species belonging to it from those of allied groups. This is one of the best defined groups of the genus. The species are rather above the average size, generally more or less bronzed without testaceous markings, and usually with the surface of the elytra uneven, alutaceo-granulate, with elevated smooth spaces, this latter character being less marked in punctatostriatum. It is the equivalent of the first section of Duval’s second group (Ann. Soe. Ent. France, 1851, ser. 2, ix, p. 452), that author including in his second section those which I have placed in the next group. Five species are known to me. One, B. littorale Oliv., occurs also in the old world. They may thus be separated : ROLAND HAYWARD. 43 Elytra with the fourth stria sinuate. Form slender, elongate, convex ; thorax as long as wide, not wider at base than apex, hind angles subacute; elytra deeply striate, the strie distinctly punctate: legs «neous, the femora at base and the tibiz more or less testaceous. Length .19-.22 inch..........--....6.-- inzequale Say. Broader, less convex ; thorax distinctly wider than long, slightly wider at base than apex, hind angles varying from subrectangular to subacute; elytra less deeply striate, the strize more finely punctate; legs variable, usu- ally nearly as in inequale. Length .19-.26 inch....... littorale Oliv. Elytra with the fourth stria straight. Thorax not wider at base than apex. Broad, slightly depressed ; thorax nearly twice as wide as long, sides arcuate in front, deeply sinuate behind, basal fovez bistriate, hind angles sub- acute, carinate; elytra finely striate, the strie finely punctate; legs varying from zneo-piceous to eneo-testaceous. Length .22-.28 inch. earinula Chaud. Thorax wider at base than apex. Broad, feebly convex ; thorax about one-half wider than long, sides slightly arcuate in front, feebly sinuate behind, basal fovee unistriate, hind. an- gles subacute, not carinate ; elytra finely striate, the strie finely punc- tate: legs dark eeneous or nearly black. Length .22-.28 inch. lorquini Chaud. Robust, moderately convex; thorax very distinctly wider at base than apex. about one-half wider than long, sides slightly arcuate in front, sinuate behind, hind angles prominent, acute; elytra deeply striate, the striz deeply punctate; legs dark eneous, the femora at base and the tibice more or less rufous. Length .22-.30 inch. . punetatostriatum Say. 4. B. inzequale Say.—Form slender, elongate, convex ; color bronze, shin- ing. Head large, as wide as the thorax at apex, alutaceo-granulate; palpi pice- ous, more or less testaceous at base; antennee more than one-half the length of the body, eeneo-piceous, the first joint more or less rufous. Prothorax as long as wide, not wider at base than apex, alutaceo-granulate, finely so or not at all on the disc, feebly rugose at base, slightly transversely wrinkled along the median line; apex nearly truncate: median line deep, sub-entire or slightly abbreviated at each end; transverse impressions distinct; basal impressions broad, unistriate : sides with the margin very narrowly reflexed, arcuate in front, slightly sinuate in front of the hind angles. which are subacute, not carinate. Elytra more than one-half wider than the thorax, oblong-oval, moderately deeply striate, granulate, with slightly elevated smooth spaces; striw distinctly punctate, the punctures becoming nearly obsolete at apex ; fourth stria sinuate, as are also the third, fifth and sixth to a less degree; intervals convex, the third with the first fovea slightly in front of the middle, the second about one-fourth from apex. Beneath dams viridi-zeneous, shining. Legs wneous, the femora at base and the tibiz more or less testaceous. Length .19-.22 inch ; 4.75-5.5 mm. The smallest and most slender species of the group. It is less variable than some of the other species, the color being usually bronze, often slightly tinged with green. It is most nearly related to Jittorale, from which, however, it is TRANS. AM. ENT. SOC. XXIV. FEBRUARY, 1697. 44 AMERICAN COLEOPTERA. readily distinguishable by its more convex and slender form, usually smaller size and proportionally longer thorax, which is not wider at base than apex. The elytra are more deeply striate, with the punc- tures of the strize deeper and more distinct. From the other species of the group it may at once be recognized by the sinuate fourth stria of the elytra, as well as by its size and form. It is widely distributed throughout the Eastern and Central States, being known to me from New Hampshire, Massachusetts (Spring- field), New York (Adirondack Mountains; Buffalo), Ohio, Penn- sylvania, southwestern Virginia, Georgia, Florida, Wisconsin, Towa, Arkansas and Texas. LeConte (Ann. Lyc., 1848, iv, p. 452) records it from the Rocky Mountains. I have never known of its occurrence on the Pacific coast. Pa 5. B. littorale Oliv.—Form moderately broad, feebly convex ; color usually more or less coppery bronze, more rarely greenish bronze or nearly black. Head scarcely as. wide as the thorax at apex. alutaceo-granulate; palpi eneo-piceous ; antenne about one-half as long as the body, piceous, the basal joints more or less eneous, the first rarely paler. Prothorax distinctly wider than long, slightly wider at hase than apex, alutaceo-granulate, less distinctly so or not at all on the disc, slightly rugose at base, more or less transversely wrinkled along the median line; apex scarcely emarginate: median line distinct, usually abbre- viated before and behind; transverse impressions distinct; basal impressions moderately deep, unistriate : sides with the margin very narrowly reflexed, slightly arcuate in front, more or less sinuate behind; hind angles subrectangular, not carinate, or with faint traces of a carina. Elytra rather less than one-half wider than the thorax, nearly as in inequale, with the striz less deep and less strongly punctate, and the elevated smooth spaces more marked and usually more numer- ous. Beneath neous, shining. Legs eneo-piceous, the femora at base and sometimes the’ tibize more or less testaceous. Length .19-.26 inch; 4.75-6.5 mm. A very variable species. Although usually more or less bronzed, I have seen specimens nearly black, this color being usually corre- lated with somewhat paler legs. The first joint of the antennz varies from seneous to nearly rufous. The fourth stria of the elytra is usually very distinctly sinuate, being sometimes nearly united with the third at about one-fourth from base. Rarely, however, it is but slightly sinuate. The third, fifth and sixth strize are also usually sinuate, though to a less degree. The number and extent of the elevated smooth spaces of the elytra vary considerably, they being either connected or distinet, in some specimens limited to the four inner intervals, in others extending on to the fifth and sixth and even the seventh and eighth, especially towards the tip. The quad- rate foveze are very well marked. The relative width of the thorax as compared with its length varies slightly, as does also its width at ROLAND HAYWARD. 45 base as compared with that apex. In some examples that I have seen, especially from the Pacific coast, the hind angles have a very short, feeble carina. It is, however, by no means constant in speci- mens from that region and gradually fades away, until in a large series all traces of it vanish. The depth of the sinuation of the sides of the thorax behind is also somewhat variable, and the hind angles vary from nearly rectangular to subacute, the latter variation being usually correlated with the depth of the sinuation. B. lacustre Lee. (Ann. Lyc., 1848, iv, p. 451) cannot be regarded as distinct, it only differing in having the thorax slightly longer and more deeply sinuate behind, and the elevated sincoth spaces of the elytra somewhat less extended than in average specimens. From our other species of the group, except inequale, it differs by the sinuate fourth stria of the elytra. From inwquale it may be distinguished by its usually larger size, less convex and broader form, and by its proportionally wider thorax, which is slightly wider at hase than apex. The elytral strize are less deep and more finely punctured. Its range of distribution is very extended. It occurs in Canada, Michigan and the Lake Superior region, Manitoba, Colorado, W vo- ming, Utah, California, Oregon, Washington and British Columbia, and in the old world throughout a large part of Europe and in Siberia. 6. B. earinula Chaud.—Form broad, slightly depressed ; color varying from coppery bronze to nearly black. Head slightly narrower than the thorax at apex, alutaceo-granulate; palpi eneo-piceous; antenne rather less than one-half the length of the body, eneo-piceous, the first joint, and sometimes the second and third at base more or less rufous. Prothorax feebly convex, nearly twice as wide as long, not wider at base than apex, alutaceo-granulate except ou the disc, slightly rugose at base and apex, more or less transversely wrinkled along the median line: apex slightly emarginate; median line distinct, abbreviated in front; transverse impressions distinct; basal impressions hroad, deep, bistriate ; sides with the margin very narrowly reflexed, arcuate in front, deeply sinuate behind ; hind angles prominent, subacute, carinate. Elytra about one-half wider than the thorax, oblong-ovate, moderately finely striate, the surface finely granu- late with elevated smooth spaces confined to the third interval ; striz finely pune- tate, the fourth straight ; intervals nearly flat, the third with the first fovea at or slightly behind the middle, the second about one-fourth from apex. Beneath dark eneous, shining. Legs varying from eneo-piceous to eneo-testaceous: Length .22-.28 inch ; 5.5-7 mm. A very pretty species, distinct from the others of the group by the proportionally broader thorax with the sides more strongly arcuate in front and more deeply sinuate behind, the hind angles distinctly carinate, and the basal foveze distinctly bistriate. The elytral inter- TRANS. AM. ENT. SOC. XXIV. FEBRUARY, 1897. 46 AMERICAN COLEOPTERA. vals vary from flat to feebly convex, especially the outer ones. The legs are usually zeneo-testaceous with the femora at apex and the tarsi darker ; their color, however, varies to nearly zeneo-piceous, with the femora at base and the tibize beneath paler. It is allied to lorquint and punctatostriatum by the straight fourth stria of the elytra. The males appear to be much rarer than the females. Tt occurs in New Hampshire, Massachusetts (Springfield), New York (Adirondack Mountains), Georgia, Ohio, Michigan and the Lake Superior region, the Hudson Bay Territory, Illinois, Wiscon- sin, Arkansas, Oregon and Vancouver Island. At Port Arthur, on the north shore of Lake Superior, I found it to be the most abundant species of the group. 7. B. lorquini Chaud.—Form broad. feebly convex; color varying from nearly black to dull bronze, or more rarely coppery. Head as wide as the thorax at apex, alutaceo-granulate; palpi piceous or eneo-piceous ; antenne nearly one- half the length of the body, dark piceous or nearly black, the basal joints more or less eeneous, the first rarely rufous. Prothorax distinctly wider than long, slightly wider at base than apex, the surface more or less alutaceo-granulate, slightly rugose at hase, feebly transversely wrinkled along the median line; apex nearly truncate; median line distinct, usually abbreviated before and behind ; anterior transverse impression nearly obsolete, the posterior distinct: basal im- pressions moderately deep, unistriate ; sides very finely margined, slightly arcuate in front, feebly sinuate behind; hind angles subacute, not carinate. Elytra nearly one-half wider than the thorax, oblong-ovate, rather finely striate, granu- late with elevated smooth spaces, which are usually confined to the third interval ; strie finely punctate, the fourth straight; intervals nearly flat. the third with the first fovea about the middle, the second about one-fourth from apex. Beneath dark neous, shining, the abdomen nearly black. Legs dark zeneous, or nearly black. Length .22-.28 inch; 5.5-7 mm. This species varies in color and in the extent and coarseness of the granulation, some specimens bearing a strong resemblance to littorale. These may be at once distinguished by the straight fourth stria of the elytra. From carinula it may be readily recognized by the characters given above, while from punctatostriatum it differs by the form of the thorax, the less deeply striate elytra with the strize more finely punctured, and the usually much less shining surface. Its range of distribution is more limited than that of the others of this group. I have seen specimens from Colorado, Wyoming, Montana, California, Oregon and British Columbia. It seems to be confined to the region west of the Rocky Mountains. 8. B. punctatostriatum Say.—Form robust, moderately convex ; color bronzed, usually more or less coppery, rarely greenish or bluish, shining. Head ROLAND HAYWARD. AT as wide as the thorax at apex, alutaceous; palpi eeneo-piceous, more or less testa- ceous at base; antenne about one-half the length of the body, eneo-piceous, the first joint usually rufous beneath or entirely rufous. Prothorax about one-half wider than long, very distinctly wider at base than apex, slightly rugose at base, transversely wrinkled along the median line and sometimes also at the sides; transverse impressions moderately distinct; basal impressions broad, deep, feebly bistriate, the outer stria small and close to the angle or sometimes nearly obso- lete; sides with the margin narrowly but distinctly reflexed, slightly arcuate in front, sinuate behind; hind angles prominent, acute. Elytra less than one-half wider than the thorax, oblong-ovate, deeply striate, with the elevated smooth spaces less marked than in the others of the group and confined to the third in- terval, the outer intervals and tip alutaceous or alutaceo-granulate ; strive deeply punctate, the fourth straight ; intervals slightly convex, especially the outer ones. the third with the fovee less marked, the first slightly in front of the middle, second about one-third from apex. Beneath dark geneous, shining. Legs zeneo- piceous, the femora at base and the tibiz beneath more or less testaceous. Length *,.22-.30 inch ; 6.25-7.5 mm. The largest species of the group. It seems to vary less than the other species. The thorax is always very distinctly wider at base than apex, with the hind angles prominent, acute, and sometimes with faint traces of a carina. The basal impressions are feebly bi- striate, the outer stria in some specimens almost obsolete. The ely- tral strize are deep and very distinctly punctate. The surface is more shining than in the others of the group, and, as a consequence, the elevated smooth spaces, so obvious in Jittorale, are here but slightly marked, or almost obsolete, and confined to the third interval. The quadrate foveze are also usually less marked, being quite feeble in some specimens, while the punctures enclosed by them are larger. It is most closely related to lorquini and carinula, but may be readily distinguished by the characters above given, which, with the straight fourth stria of the elytra, will at once separate it from ine- quale and littorale. It seems to make the nearest approach to the next group. As in B. carinula, the males are much less abundant than the females. It is widely distributed, but appears to be nowhere very common. I have known of its occurrence in Vermont, Massachusetts (Lowell ; Springtield), New York ( Buffalo), Pennsylvania, Missouri, Arkansas, Montana, California and Washington. Group iv. coxendix. Maxillee with the outer lobe biarticulate. Frontal grooves single, straight and parallel; eyes large and prominent. Prothorax sub- quadrate, either as wide or wider at base than apex, with the basal TRANS. AM. ENT. SOC. XXIV. FEBRUARY, 1897. 48 AMERICAN COLEOPTERA. impressions usually more or less bistriate, unistriate in bowditchi, and the base truncate, obliquely so each side. Elytra with the humeri subangulate, with a more or less well-defined carina extend- ing to the fifth stria; strize entire, the eighth distant from the mar- gin; third interval not wider than the others, with two small dorsal punctures placed near the third stria; the quadrate foveee observed in the last group are here absent. The two groups are closely allied, Duval (Ann. Soc. Ent. France, 1851, ser. 2, ix, p. 452), in fact, regarding them as one, the present being the equivalent of the second section of his group ii. Our species, six in number, are closely related. It is hoped the following table will assist in their separation : Thorax wider at base than apex. Elytra very deeply striate, the striz almost crenulately punctate. Broad, slightly convex; bronzed, shining; head finely alutaceous; thorax one-half wider than long, sides not sinuate behind, hind angles sub- obtuse; elytra slightly wider than the thorax, widest about one-fourth from base; legs seneo-ferruginous, the femora darker. Length .24-.26 UTAH creierd.a) eee caster stele aioe cis O%elerm ar ayclbowié sirbe ie ershayaevensie ¢arinatum Lec. More elongate, convex; bronzed or black, less shining; head and thorax alutaceous, the latter less than one-half wider than long, sides sinuate in front of the hind angles, which are subacute; elytra about one-third wider than the thorax; legs zneo-piceous, the tibiw slightly paler. Length .24-.27 inch. ...-6--6.20- sees meee rene sculpturatum Mots. Elytra moderately deeply striate, the striz rather finely punctate. i Robust ; bronzed, shining: thorax nearly twice as wide as long, sides arcuate in front, sinuate behind, hind angles acute; elytra about one-half wider than the thorax; legs rufo-piceous, slightly eneous, the femora rufous at base. Length .23-.25 inch...........-.+.6-.. robusticolle n. sp. Elytra finely striate, the strie finely punctate. Slightly depressed ; dull black or feebly bronzed, the surface alutaceous, not shining; thorax scarcely one-half wider than long, sides sinuate behind, basal impressions unistriate, hind angles acute, divergent, prominent: elytra about one-half wider than the thorax ; .egs black, slightly eeneous. Wem eth; 22.24 WCW crete aetere eine aces sieveniavctey eke renarererens bowdiitchi Lec. Thorax not wider at base than apex. Feebly convex ; bronzed varying to bluish black, shining; thorax about one- half wider than long, sides moderately arcuate in front, sinuate behind, hind angles slightly prominent, subacute; elytra deeply striate, the striz deeply punctate; legs eeneo-piceous, the femora at base and the tibiz rufous, Length 22-26 inch i ei. <6 aie weieieys siete acess «he coxendix Say. More convex; bronzed, usually coppery, elytra with the discs obscurely testa- ceous; thorax scarcely one-half wider than long, sides arcuate nearly to base, feebly sinuate in front of the hind angles, which are sub-rectangular ; elytra moderately deeply striate, the strie distinctly punctate, the punc- tures usually greenish; legs testaceous. Length .18-.27 inch. confusum Nobis. ROLAND HAYWARD. 49 9. B. ecarinatum Lec.—Form moderately robust, slightly convex; color coppery bronze, shining. Head slightly narrower than the thorax at apex, in- serted therein nearly to the eyes, finely alutaceous ; palpi rufo-ferruginous, darker at tip; antenne scarcely one-half as long as the body, piceous, the first three joints and sometimes the fourth at base rufous. Prothorax rather more than one- half wider than long, very distinctly wider at base than apex, not alutaceous, feebly transversely wrinkled along the median line, slightly rugose at base : apex nearly truncate ; median line fine, extending between the transverse impressions, which are moderately distinct ; basal impressions broad, deep, bistriate, the outer stria small and close to the angle; sides with the margin very narrowly reflexed, feebly arcuate in front, not sinuate behind; hind angles not prominent, sub- obtuse but not rounded, finely carinate. Elytra slightly wider than the thorax, widest about one-fourth from base, oblong-ovate, deeply striate; striz entire, deeply, almost crenulately punctate, the punctures less evident towards the tip ; intervals convex, the third with the first dorsal puncture about or slightly behind the middle, the second about one-fifth from apex. Beneath dark eneous, shining. Legs eneo-ferruginous, the femora darker. Length .24-.26 inch: 6-6.5 mm. Closely allied to sculpturatum. The thorax is, however, wider in proportion to its length, not alutaceous, with the sides not sinuate behind and the hind angles subobtuse. The elytra are only slightly wider than the thorax and are widest about one-fourth from base ; the striz are slightly less deep and the intervals somewhat less con- vex. The form is less elongate, the surface more shining, and the color usually more bronzed. From the other species of the group it may readily be distinguished by the characters previously mentioned. The specimens in the LeConte collection are labeled “ California,” but are probably from the Valley of the Colorado River, as the spe- cies was described from that region. The only other specimens that I have seen are from Arizona. For the single example in my cabinet I am indebted to Dr. Horn. 10. B. seulpturatum Mots.—Form moderately elongate, convex: color varying from bronze to black, more or less shining. Head scarcely narrower than the thorax at apex, alutaceous; palpi piceous; antenne rather less than one-half the length of the body, the first joint rufous, as are also sometimes the second and third at base. Prothorax nearly one-half wider than long, wider at base than apex, slightly rugose at base, transversely wrinkled along the median line; apex nearly truncate; median line fine, abbreviated in front; transverse impressions feeble, the anterior sometimes nearly obsolete; basal impressions broad, moderately deep, bistriate, the outer stria small and close to the angle; sides with the margin very narrowly veflexed, moderately arcuate, sinuate in front of the hind angles, which are subacute, finely carinate. Elytra about one- third wider than the thorax, oblong-ovate, subparallel. very deeply striate; strice very deeply, almost crenulately punctate, the punctures scarcely less obvious at -apex ; intervals very convex, the third with the first dorsal puncture about the middle, the second about one-fourth from apex. Beneath dark neous, shining. Legs eneo-piceous, the tibiz usually paler. Length .24-.27 inch; 6-6.75 mm. TRANS. AM. ENT. SOC. XXIV. (7) FEBRUARY, 1097. 50 AMERICAN COLEOPTERA. Very closely related to the preceding. It differs in having the thorax longer as compared with its width, with the sides slightly sinuate behind, the hind angles subacute and the surface alutaceous. The elytra are wider as compared with the thorax, somewhat more deeply striate with the intervals slightly more convex. The surface is less shining, and the form more elongate and more convex than in carinatum. From robusticolle it differs by its proportionally lon- ger thorax, more elongate form and narrower elytra as compared with the thorax, with the strie deeper and much more strongly’ punctured. It was described by Motschulsky from Alaska, and occurs also in California and Arizona. 11. B. robusticolle n. sp.—Form robust, convex ; color dark bronze, shin- ing. Head as wide as the thorax at apex, very finely alutaceous; palpi rufo- piceous; antenne about one-half the length of the body, piceous, the first joint rufous, as are the second and third beneath. Prothorax nearly twice as wide as long, wider at base than apex, rugose at base and slightly so at apex, transversely wrinkled along the median line; apex slightly emarginate ; median line distinct, abbreviated in front; transverse impressions distinct; basal impressions broad, deep, very distinctly bistriate; sides with the margin very narrowly reflexed, moderately arcuate, distinctly sinuate in front of the hind angles, which are prominent, acute and carinate. Elytra about one-half wider than the thorax, oblong-ovate, moderately deeply striate; strive finely punctate, the punctures becoming obsolete towards the tip; intervals slightly convex, the third with the first dorsal puncture about the middle, the second about one-fifth from apex. Beneath dark eeneous, shining, the abdomen nearly black. Legs dark rufo- piceous, slightly eneous, the femora rufous at base. Length .23-.25 inch; 5.75- 6.25 mim. This species is quite closely allied to the two preceding. It is, however, more convex. The thorax is wider in proportion to its length, with the sides more deeply sinuate behind, the basal impres- sions more strongly bistriate and the hind angles more prominent and acute. The elytra are wider as compared with the thorax, with the strize less deep and much more finely punctured. It has quite a different facies from either. Described from one male in my cabinet from Iowa. Specimens have also been seen from Michigan and Kansas. 12. B. bowditehi Lec.—Form moderately broad, slightly depressed ; color dull black, sometimes slightly bronzed, not shining, the surface alutaceous or alutaceo-granulate. Head as wide as the thorax at apex; palpi black; antennee about one-half the length of the body, black. Prothorax scarcely one-half wider than long, wider at base than apex; apex slightly emarginate: median line dis- tinct, entire; anterior transverse impression obsolete or nearly so, the posterior ROLAND HAYWARD. Dil distinct; basal impressions small, unistriate; sides with the margin very nar- rowly reflexed, arcuate in front, moderately deeply sinuate behind; hind angles acute, divergent. not carinate. Elytra about one-half wider than the thorax, oblong-ovate, finely striate; strie entire, finely but distinctly punctate, the punc- tures becoming obsolete towards the tip; intervals nearly flat, the third with the first dorsal puncture slightly in front of the middle, the second about one-fifth from apex. Beneath dark zneous, shining. Legs nearly black, with more or less eeneous lustre. Length .22-.24 inch; 5.5-6 mm. Smaller, more depressed and less shining than any of the preced- ing species of the group, from which it also differs by the thorax with the sides deeply sinuate behind, the basal impressions unistriate, and the hind angles more acute and not carinate. The elytra are more finely striate, with the intervals nearly flat. It resembles most closely certain forms of coxendix, but may be distinguished by the thorax wider at base than apex, with the basal foveze unistriate, the hind angles acute, divergent and not carinate, and by the more finely striate elytra and nearly black legs. The differences in the thorax between this and the next species are, as remarked by Dr. LeConte, nearly the same as those exhibited between lorquint and carinula in the last group. I have seen but eight specimens of this species, all collected at Green River City, Wyo., by Mr. F. C. Bowditch, to whom I am indebted for the single example in my cabinet. 13. B. eoxendix Say.—Form slightly elongate, feebly convex; color bronzed, varying to bluish black, shining. Head as wide as the thorax at apex, alutaceous; palpi piceous; antennee about one-half as long as the body, piceous, the first joint and sometimes the second and third at base rufous. Prothorax about one-half wider than long, not wider at base than apex, finely rugose at base, feebly transversely wrinkled along the median line; apex feebly emargin- ate; median line distinct, abbreviated in front and usually behind; transverse impressions distinct; basal impressions broad, deep, feebly bistriate, the outer stria smaller and less distinct; sides with the margin very narrowly reflexed, moderately arcuate in front, sinuate behind: hind angles slightly prominent, subacute, very finely or obsoletely carinate. Elytra about one-third wider than the thorax, oblong-ovate, deeply striate; striae deeply punctate. less distinctly towards the apex; intervals convex, the third with the first dorsal puncture about the middle, the second about one-fifth from apex. Beneath dark eneous, shining. Legs seneo-piceous, the femora at base and the tibiz rufous. Length .22-.26 inch; 5.5-6.5 mm, This species varies in color as indicated above. From the next, which was described by Dejean under the name nitidudum, it seems distinct by the characters above given, while from the others of the group it may be distinguished by the thorax not wider at base than apex. Nearly black specimens bear considerable resemblance to bowditehi. TRANS. AM. ENT. SOC. XXIV. FEBRUARY, 13897. 52 AMERICAN COLEOPTERA. I have taken it at Winnipeg, Manitoba, and have seen specimens from Lake Superior, Illinois, Nebraska, Kansas, Colorado, New Mexico and Texas. 14. B. confusum Nobis.—Form moderately robust. convex; color usually coppery bronze, rarely nearly black, shining, elytra with the dises obscurely tes- taceous. Head as wide as the thorax at apex, alutaceous; palpi testaceous, darker towards the tip: antenne about one-half the length of the body, piceous, the first three joints and base of fourth testaceous. Prothorax rather less than one-half wider than long. not wider at hase than apex, feebly transversely wrinkled along the median line, finely rugose at hase; apex nearly truncate; anterior transverse impression usually feeble or nearly obsolete, the posterior moderately distinct: basal impressions broad, deep, bistriate; sides with the margin very narrowly reflexed, arcuate nearly to base, feebly sinuate in front of the hind angles, which are not prominent, subrectangular and feebly carinate. Elytra about one-half wider than the thorax, oblong-ovate, moderately deeply striate; striz distinctly punctate, the punctures usually greenish, less obvious towards the tip; intervals slightly convex, the third with the first dorsal puncture slightly behind the mid- dle, the second about one-fifth from apex. Beneath black, usually strongly tinged with green, shining, the epipleure more or less testaceous. Legs testaceous. Length .18-.27 inch ; 4.5-6.75 mm. The name nitidulum, under which this species was described by Dejean, being preoccupied, the above is proposed in its place. It has for a long time been regarded as a variety of the preceding, but seems to me too distinct to be retained as such. It differs from coxendix by its more robust form, proportionally longer thorax, with the sides arcuate nearly to base and feebly sinuate in front of the hind angles, which are subrectangular and not prominent. The elytra are less deeply striate with the punctures usually greenish, the intervals Jess convex and the discs obscurely testaceous. The legs are entirely pale testaceous. It varies greatly in size. It occurs throughout the Eastern and Central States, being known to me from New Hampshire, Massachusetts, New York, New Jersey, Pennsylvania, Maryland, Delaware, Virginia, Georgia, Kentucky, Indiana, the Lake Superior region, Iowa and Colorado, Group v. honestum. Maxille with the outer lobe bi-articulate. Frontal grooves single, straight, parallel; eyes large, prominent. Prothorax subquadrate, more or less narrowed behind; basal impressions unistriate; base truncate, obliquely so each side; hind angles not carinate. Elytra with the striz entire, punctate, the eighth distinct and moderately distant from the margin; third stria with two dorsal punctures ; humeri subangulate. ROLAND HAYWARD. isy33 This group differs from all the others in which the dorsal punc- tures are situated on the third stria by the subangulate humeri of the elytra, and from all but the next in having. the eighth stria dis- tinct from the margin. The species are above the average size and some of them resemble each other very closely. In the first two the head and thorax are alutaceous, the latter usually very finely or not at all so on the disc, and in the first the elytra are usually coarsely alutaceous at the sides, being very finely so in the second. In the next three the surface is sometimes very finely, sometimes not at all alutaceous, this character being so variable as to be of no service in their separation. The following species occur in our fauna : Elytra with the dorsal punctures large, round, foveiform. Thorax very distinctly narrower at base than apex, sides strongly arcuate, sinuate in front of the hind angles. which are obtuse; elytra finely striate, the outer intervals usually coarsely alntaceous and subopaque. Length .27-.30 inch... +... see cece cece eee ees bifossulatum Lec. Thorax slightly narrower at base than apex, sides moderately arcuate in front. slightly sinuate behind, hind angles subrectangular; elytra finely striate, very finely alutaceous, shining. Length .20-.24 inch. americanum Dej. Elytra with the dorsal punctures normal. Form broad, dilated, depressed; thorax narrower at base than apex, sides strongly arcuate in front, sinuate behind, hind angles obtuse; elytra moderately deeply striate, much more finely at tip; legs dark rufous. Length .26-.29 inch. ...-.-..sesee cece sete cee e eee dilatatum Lec. More elongate, feebly convex; thorax scarcely narrower at base than apex; apex emarginate, sides slightly arcuate in front, feebly sinuate behind, hind angles subrectangular ; elytra more deeply striate ; legs piceous, the femora at base and the tibie often rufous. Length .23 -.27 inch. honestum Say. More convex; thorax more narrowed behind, apex truncate, sides strongly ar- cuate in front, sinuate behind, hind angles subrectangular; elytra more deeply striate, the ‘striae more deeply, almost crenulately punctate. Length .22-.25 inchs ...0c0+se cece ce cece sree cee gs chaleeum Dej. Elongate. depressed ; thorax slightly narrower at base than apex. sides arcuate in front, sinuate behind, hind angles acute, slightly prominent; elytra moderately finely striate, with an ill-defined discal spot about one-third from apex testaceous; legs rufous. Length .20-.23 inch. blanchardi n. sp. 15. B. bifossulatum Lec.—Form moderately broad, depressed: color geneous or coppery bronze, rarely black, the head, thorax and sides of the elytra usually more or less coarsely alutaceous and subopaque. Head large, as wide as or slightly wider than the thorax at apex : palpi piceous or nearly black ; antennee nearly one-half as long as the body, nearly black, the basal joints somewhat TRANS. AM. ENT. SOC. XXIV. FEBRUARY, 1897. 54 AMERICAN COLEOPTERA. zneous, the first rarely rufous beneath. Prothorax nearly twice as wide as long, distinctly narrower at base than apex, more or less transversely wrinkled along the median line, rugose at base ; apex emarginate; median line distinct. extend- ing between the transverse impressions, which are distinct; basal impressions broad, moderately deep; sides with the margin narrowly reflexed, strongly ar- cuate, sinuate for a short distance in front of the hind angles, which are obtuse, but not rounded. Elytra about one-half wider than the thorax, oblong-oyate, finely striate, more finely towards the tip; strie distinctly punctate to behiud the middle, the third with the dorsal punctures large, round, foveiform, the first about the middle, the second about one-fourth from apex ; intervals flat or nearly so. Beneath greenish black, shining. Legs eeneo-piceous. the femora sometimes more or less rufous at base. Length .27-.30 inch; 6.75-7.5 mm. The largest species of the group. It is most nearly allied to americanum, from which it differs by its larger size, more depressed form and proportionally wider thorax, which is more narrowed be- hind, with the sides more strongly arcuate. The elytra are usually more coarsely alutaceous, especially at the sides, the amount of shin- ing surface being often confined to the three or four inner intervals. This is, however, subject to some variation. It occurs from the Rocky Mountain region westward to the Pacific coast. Specimens have been seen from Nebraska, Kansas, Wyoming, Colorado, Texas, New Mexico, Utah, California, Oregon, Washing- ton, Briish Col Columbia and Vancouver Island. 16. B. americanum Dej.—Form moderately broad, slightly depressed ; color geneous, more or less coppery, shining. Head as wide as the thorax at apex, alutaceous, subopaque; palpi rufo-piceous, slightly paler at base: antenne about one-half the length of the body, piceous, the first joint and sometimes the second and third at base more or less rufous. Prothorax rather more than one-half wider than long, slightly narrower at base than apex, finely rugulose at base; apex nearly truncate; median line distinct, abbreviated before and behind; transverse impressions distinct; basal impressions rather shallow: sides with the margin very narrowly reflexed,. moderately arcuate in front, slightly sinuate behind; hind angles subrectangular. Elytra about one-half wider than the thorax, oblong-ovate, finely striate, more finely at sides and tip; strie distinctly punctate to behind the middle, the third with the dorsal punctures as in bifos- sulatum, the first very slightly in front of the middle, the second about one-fourth from apex. Beneath greenish black, shining. Legs eeneo-piceous, the femora at base and the tibize beneath rufous. Length .20-.24 inch; 5-6 mm. Smaller than bifossu/atum, with the surface more shining and very finely alutaceous. The thorax is slightly longer in proportion to its width and less narrowed behind, with the sides less strongly arcuate, the apex nearly truncate and the hind angles subrectangular | The elytra are usually more finely striate, with the striz more finely punctured. The antennee, palpi and femora are more rufous at base and the tibiz are rufous beneath. ROLAND HAYWARD. 55 It extends over the greater part of the region east of the Rocky Mountains, being known to me from Maine. New York, New Jersey, Pennsylvania, Delaware, South Carolina, Ohio, Michigan, Kentucky, Illinois, lowa, Missouri, Louisiana and Texas. 17. B. dilatatum Lec.—Form broad, dilated moderately depressed ; color bronzed, shining. Head slightly narrower than the thorax at apex ; palpi rufous, darker at tip; antenne about one-half as long as the body, piceous, the first joint rufous. Prothorax more than one-half wider than long, narrower at base than apex, slightly rugose at base ; apex nearly truncate, median line distinct, extend- ing between the transverse impressions, which are distinct; basal impressions moderately deep; sides with the margin narrowly reflexed, strongly arcuate in front, distinctly sinuate behind; hind angles obtuse, but not rounded. Elytra about one-half wider than the thorax, oblong-oval, moderately deeply striate, more finely at tip; strie distinctly punctate to behind the middle, the third with the - first dorsal puncture slightly in front of the middle, the second about one-fourth from apex; intervals flat. Beneath more or less tinged with green, shining. Legs dark rufous. Length .26-.29 inch; 6.5-7.25 mm. So far as can be judged from the small amount of material exam- ined, this species seems distinct by the above characters. But two specimens are known to me, LeConte’s type from Colum- bia, Pa., and one in Dr. Horn’s cabinet from the Indian Territory. 18. B. honestum Say.--Form rather elongate, feebly convex ; color eneous, usually more or less coppery, more rarely bluish or greenish, shining. Head as wide as the thorax at apex; palpi piceous, more or less rufous at base ; antennee about one-half the length of the body, piceous, the first joint more or less rufous. Prothorax less than one-half wider than long, scarcely narrower at base than apex, rugose at base; apex slightly emarginate ; median line deep, abbreviated before and behind ; transverse impressions distinct: basal impressions moderately deep ; sides with the margin narrowly reflexed, slightly arcuate in front, feebly sinuate be- hind; hind angies subrectangular. Elytra about one-half wider than the thorax, oblong-ovate, moderately deeply striate, less deeply towards the apex; stric dis- tinetly punctate, the punctures becoming obsolete at tip; third stria with the first dorsal puncture slightly in front of the middle, the second about one-fourth from apex; intervals slightly convex. Beneath black, slightly tinged with green, shining. Legs eneo-piceous, the femora at base and sometimes the tibize more or less rufous. Length .23-.27 inch: 5.75-6.75 mm. More convex than dilatatum, than which it is also more slender. The thorax is proportionally less wide as compared with its length and less narrowed behind, with the hind angles subrectangular. It is most nearly related to the next species, but the form is less convex and the thorax scarcely narrower at base than apex, with the sides less arcuate in front and less sinuate behind. The elytra are less deeply striate, with the strize less deeply punctured. The name honestwm Say has several years priority over that of TRANS. AM. ENT. SOC. XXIV. FEBRUARY, 1897. 56 AMERICAN COLEOPTERA. antiquum Dej., which is the one by which this species has been pre- viously known. Say’s name must, therefore, be restored. It occurs in Canada, the New England States, New York, New Jersey, Pennsylvania, the District of Columbia, Virginia, Illinois, Wisconsin, Towa, Wyoming and Texas. 19. B. chaleeum Dej.—Form rather more slender and more convex than honestum ; color usually more or less coppery bronze, more rarely greenish or bluish black. Head as in honestum. Prothorax about one-half wider than long, slightly narrower at base than apex, more convex than in honestum, more or less rugose at base; apex truncate, median line distinct, abbreviated in front and behind ; anterior transverse impression usually feeble, the posterior distinct ; basal impressions rather small. moderately deep; sides with the margin very narrowly reflexed, strongly arcuate in front. distinctly sinuate behind; hind angles sub- rectangular. Elytra about one-half wider than the thorax, oblong-oval, deeply striate; strie deeply, almost crenulately punctate nearly to tip, scarcely less deep at apex: third stria with the first dorsal puncture slightly in front of the middle, the second about one-fourth from apex; intervals convex. Beneath greenish black, shining. Legs rufo-piceous, the femora at base and sometimes the tibie paler. Length .22-.25 inch; 5.5-6.25 mm. Most nearly related to the preceding, of which I was at first in- clined to regard it as only a variety. It is, however, more convex, and the thorax is proportionally slightly wider as compared with its length, with the apex truncate and the sides more strongly arcuate in front and more deeply sinuate behind. The strize of the elytra are deeper and more deeply punctured, and the intervals more con- vex. It averages slightly smaller in size. It occurs in Canada, Massachusetts, New York, New Jersey, Vir- ginia, Ohio, the Lake Superior region, Wisconsin, Lowa and Colo- rado, but seems to be nowhere as abundant as the preceding. 20. B. bDlanechardi n. sp.—Form slender, elongate, slightly depressed. Head and thorax nigro-zeneous, distinetly tinged with green, elytra geneous, with an ill-defined discal spot about one-third from apex testaceous; surface shining. Head slightly wider than the thorax at apex ; palpi piceous or rufo-piceous; an- tenn scarcely one-half as long as the body, piceous, the first joint rufous. Pro- thorax nearly one-half wider than long, slightly narrower at base than apex, finely rugose at base: apex feebly emarginate ; median line deep, extending between the transverse impressions, which are distinct; basal impressions rather shallow ; sides with the margin narrowly reflexed, arcuate in front, distinctly sinuate behind ; hind angles moderately prominent, acute. Elytra about one-half wider than the thorax, elongate, ovlong-ovate, subparallel, moderately finely striate, more finely towards the tip; strie distinctly punctate to behind the middle, the third with the first dorsal puncture very slightly in front of the middle, the second about one-fourth from apex; intervals nearly flat. Beneath black, shin- ing. Legs rufous. Length .20-.23 inch; 5-5.75 mm. | ROLAND HAYWARD. ' A very pretty species, distinct from its allies by the characters above given. The humeri of the elytra are more nearly rounded than in the others of the group, of which it is the only species in which the hind angles of the thorax are acute. The ill-defined pale spot on the elytra, above mentioned, is visible in all the specimens exam- ined. It is known to me only from Lowell, Mass., where it has been taken in moderate abundance by Mr. Frederick Blanchard, to whom I am indebted for the series in my cabinet, and to whom it gives me pleasure to dedicate this species. Group vi. concolor. Maxille with the outer lobe bi-articulate. Frontal grooves single, straight, parallel ; eyes moderately large and prominent. Prothorax subquadrate or quadrate, truncate at base. Elytra with two dorsal punctures on the third stria; humeri rounded; eighth stria distinct from the margin. This group may be distinguished from the last by the rounded humeri of the elytra, while from the next it differs in having the eighth elytral stria distinct from the margin. It includes LeConte’s sixth and seventh groups, that author having placed nigrum in a group by itself, based upon its more convex form, with nearly all the strie of the elytra abbreviated behind. The striation, however, varies in the different species, all the strize being entire in concolor and recticolle, while in quadrulum and longulum the outer ones are slightly effaced at tip. Finally, in brevistriatwm they are represented by rows of rather sparsely placed, large punctures which do not attain the apex. The six species known to me may thus be separated : Robust, very convex ; nigro-zneous, the elytra often tinged with green; thorax one-half wider than long. narrower at base than apex; elytra deeply striato-punctate, the striz dilated, the first and second entire, the others abbreviated behind, the fifth represented by a groove at tip; base of antennee and legs rufous. Length .15-.18 inch.......... nigrum Say. Slightly elongate, convex; black, slightly wneous; thorax less than one-half wider than long, narrower at base than apex; strive of elytra composed of rather sparsely placed, large punctures not attaining the apex; base of antennee and legs rufous. Length .15-.17 inch. brevistriatum pn. sp. Less convex ; elytra with at least the two inner striz and the fifth or seventh entire. TRANS. AM. ENT. SOC. XXIV. (8) FEBRUARY, 1897. 58 AMERICAN COLEOPTERA. Elytra with all the striz entire. Elongate. slightly depressed ; black, scarcely eeneous; thorax slightly wider than long, as wide at base as apex ; elytra deeply striate, the strie finely punctate; legs black. Length .15-.19 inch........... recticolle Lec. More robust ; nigro-zeneous, elytra sometimes tinged with brownish; thorax one-half wider than long, scarcely narrower at base than apex: elytra deeply striato-punctate; legs piceous or rufo-piceous. Length .15-.20 DUNG Hieke e's es ors. 4S etisiel ae eitcasonevahes ones vee eccte, a iclaiie vay vener esate lage eoncolor Kirby. Elytra with the first, second and fifth or seventh striz entire; thorax one-half wider than long; legs piceous or black. Black, slightly «neous; thorax as wide at base as apex; apex emarginate. Length .16-19 inthe. 6 eee es oe vec teers wets aes quadrulum Lee, More elongate ; thorax narrower at base than apex; apex truncate. Length PSO botebits) cee era Berook Ssh icy ee meee nn eye eae to cicro' longulum Lec. 21. B. nigrum Say.—Form robust, convex; color nearly black, shining, the head and thorax usually slightly bronze, the elytra somewhat neous, often tinged with green. Head as wide as the thorax at apex; palpi rufous, slightly darker at tip; antenne about one-half the length of the body, dark fuscous, the basal joints testaceous. Prothorax about one-half wider than long, slightly nar- rower at base than apex ; apex truncate; median line distinct, abbreviated before and behind; anterior transverse impression nearly obsolete, the posterior distinct : basal impressions broad, deep, bistriate; sides with the margin narrowly reflexed, arcuate in front, obsoletely sinuate behind; hind angles subrectangular, finely carinate. Elytra about one-half wider than the thorax, oblong-oval, deeply striate; strice dilated, deeply punctate, the punctures becoming evanescent be- hind, the first and second entire, the others abbreviated behind, becoming shorter as they approach the sides, the fifth represented by a groove at tip; third stria with the first dorsal puncture about one-third from base, the second about one- third from apex, intervals convex. Beneath black, shining. Legs rufous, or rufo-testaceous. Length .15-.18 inch; 3.75-4.5 mm. A very pretty little species, easily recognizable from the others of the group by its more robust and convex form and by the striation of the elytra. It is widely distributed throughout the Eastern and Central States, being known to me from the New England States, New York, New Jersey, Pennsylvania, Delaware, Maryland, Georgia, the Lake Su- perior region, Iowa and Missouri. — 22. B. brevistriatum n. sp.—Form slightly elongate, convex : color black, slightly «neous, shining. Head as wide as the thorax at apex; palpi rufo-testa- ceous, darker towards the tip; antenne about one-half as long as the body, dark fuscous, the basal joints paler. Prothorax slightly subquadrate, scarcely one- half wider than long, slightly narrower at base than apex ; apex nearly truncate ; median line fine, sub-entire; transverse impressions very feeble; basal impres- sions moderately deep, rather feebly bistriate; sides with the margin very nar- rowly reflexed, arcuate in front, slightly sinuate behind ; hind angles rectangular, with a short. fine carina. Elytra about one-half wider than the thorax, oblong- oval, with rows of not closely placed, deep punctures, in place of strize, not at- ROLAND HAYWARD. 59 taining the apex, the fifth represented by a feeble groove at tip, the third with two dorsal punctures, the first about one-third from base, the second about one- third from apex; intervals flat. Beneath black, shining. Legs rufo-testaceous. Length .15-.17 inch ; 3.75-4.25 mm. A very singular little species, and one with affinities in several directions. The eighth elytral stria being distinct from the margin, the dorsal punctures on the third stria, and the humeri rounded, it seems best placed next to nigrum. The thorax is, however, less quadrate than in that species and all the strice of the elytra are ab- breviated behind. When we compare it with B. semistriatum the resemblance is very striking, but the peculiar arrangement of the dorsal punctures in the last-named species excludes any association with it. It occurs in California. Specimens have been sent to me from Dunsmuir (Wickham), the Pomona Mountains (Fall), and Santa Rosa ( Ricksecker). 23. B. longulum Lec.—Form elongate, scarcely depressed ; color black, more or less eneous, shining. Head slightly narrower than the thorax at apex ; palpi black; antennee about one-half as long as the body, dark piceous or black. Prothorax about one-half wider than long, slightly narrower at base than apex ; apex truncate; median line deep. usually abbreviated at each end; transverse impressions moderately distinct. the posterior deeper; basal impressions deep, bistriate ; sides with the margin very narrowly reflexed, arcuate in front, feebly sinuate behind ; hind angles sub-obtuse, but not rounded. finely carinate. Elytra less than one-half wider than the thorax, oblong-ovate, deeply striate, the first: second, third and seventh striz entire, the others slightly abbreviated behind ; strie punctate to behind the middle, the third with the first dorsal puncture slightly in front of the middle, the second about one-fourth from apex ; intervals feebly convex. Beneath black, shining. Legs dark piceous or black. Length .15-.18 inch ; 3.75-4.5 mm. Distinct from the others of the group by the characters above given. It occurs in the Lake Superior region, the mountainous parts of Wyoming, Colorado and Utah, and in California and Washington In Dr. Horn’s collection there is one specimen from Santa Monico, S. Cal. 24. B. quadrulum Lec.—Form broad, slightly depressed: color black, more or less eeneous, shining. Head scarcely as wide as the thorax at apex ; palpi black ; antenne about one-half the length of the body, dark piceous or black. Prothorax about one-half wider than long, as wide at base as apex: apex emar- ginate; median line distinct, abbreviated at each end; transverse impressions distinct; basal impressions moderately deep, bistriate; sides with the margin narrowly reflexed, slightly arcuate in front, obsoletely sinuate behind; hind angles subrectangular, finely carinate. Elytra rather less than one-half wider TRANS. AM. ENT. SOC. XXIV. FEBRUARY, 1897. 60 : AMERICAN COLEOPTERA. than the thorax, oblong-ovate, striate as in longulum. Beneath black, shining. Legs dark piceous or black. Length .16-.19 inch ; 4-4.75 mm. This species resembles recticolle in having the thorax as wide at base as apex, but is distinct by its broader form, proportionally wider thorax and abbreviated outer elytral strive. The latter character allies it to Jongulum. From concolor it is distinct by its more de- pressed form and by the striation of the elytra and form of the thorax. The latter is more quadrate, with the sides more nearly parallel, in this species and recticolle than in the others of the group. Its range of distribution is nearly the same as that of the last- named species, but it is less abundant and apparently more local. It occurs from the Rocky Mountain region westward to the Pacific coast. 25. B. concolor Kirby.—Form moderately broad, feebly convex; color black, more or less bronzed. the elytra often somewhat brownish or purplish with zeneous lustre. Head slightly narrower than the thorax at apex; palpi piceous or rufo-piceous; antennze about one-half the length of the body, piceous, the first joint more or less tinged with rufous. Prothorax about one-half wider than long, scarcely narrower at base than apex; apex feebly emarginate; median line distinct, usually abbreviated before and behind; anterior transverse impression rather feeble, or sometimes nearly obsolete, the posterior distinct; basal impres- sions moderately deep, scarcely rugose, bistriate, the outer stria smaller; sides with the margin narrowly reflexed, arcuate in front, obsoletely sinuate behind ; hind angles obtuse, but not roanded, with a short, fine carina. Elytra nearly one-half wider than the thorax, oblong-oval, deeply striate; strive very distinctly punctate, the punctures becoming obsolete towards the tip, the seventh slightly grooved at apex; third stria with the first dorsal puncture about one-third from base, the second about one-third from apex; intervals slightly convex. Beneath black, shining. Legs piceous, or rufo-piceous. Length .15-.20 inch; 3.75-5 mm. This species resembles most closely B. quadrulum, from which it differs in having the thorax very slightly narrower at base than apex and the elytral strize entire. With recticolle it agrees in having the strive of the elytra not abbreviated behind. It is, however, more robust, and differs in the form of the thorax. It is essentially a Northern species, occurring from Lake Superior to the Pacific coast. I have never known of its occurrence further South than Cheyenne, Wyo. I have seen one specimen from Sebago Lake, Me. (Blanchard). 26. B. rveeticolle Lec.—Form elongate, slightly depressed: color black, shining, often with more or less e#neous lustre. Head as wide as the thorax at apex: palpi black; antennee about one-half as long as the body, black. Protho- rax slightly wider than long, as wide at base as apex, scarcely rugose at base; apex feebly emarginate; median line deep, abbreviated before and behind ; ante- rior transverse impression ratner feebly marked, the posterior distinct; basal ROLAND HAYWARD. 61 impressions rather small, bistriate ; sides with the margin very narrowly reflexed feebly arcuate in front, nearly parallel behind; hind angles rectangular, finely carinate. Elytra scarcely one-half wider than the thorax, oblong-ovate, moder- ately deeply striate; strie entire, punctate, the punctures becoming obsolete towards the tip; third stria with the first dorsal puncture slightly in front of the middle, the second about one-fourth from apex; intervals slightly convex. Be- neath black, shining. Legs black. Length .15-.19 inch; 3.75-4.75 mm. More elongate and depressed than concolor, from which it is abun- dantly distinct by the proportionally longer thorax, which is as wide at base as apex, with the hind angles rectangular. The elytra are less deeply striate, with the strize more finely punctured, and the legs are black. From quadrudum and longulum it differs in having all the elytral striz entire, the thorax proportionally less wide as com- pared with its length, and from the latter, in addition, by the thorax not narrower at base than apex. From a very careful study of Chaudoir’s description I am con- vinced that tetragonoderum is synonymous with this species. It extends from the Rocky Mountain region westward to the Pacific coast, occurring in Wyoming, Colorado, New Mexico, Ne- vada, California and Washington. Group vii. planatum. Mouth-parts as in the last group. Frontal grooves single, straight, parallel; eyes large, prominent. Prothorax trapezoidal, scarcely convex, truncate at base; basal impressions bistriate, the outer stria as long as, or longer than the inner; hind angles distinctly carinate. Elytra without paler markings, usually finely striate; third stria with two dorsal punctures; humeri rounded; eighth stria not dis- tinct from the margin. Legs usually piceous or black, sometimes rufo-piceous. In the above definition of the group no mention is made as to whether the head is alutaceous or not. The reason for this is, that in some species it is either shining or finely alutacecus, but I have been unable to make use of this character in their separation. This is most noticeable in funereum, meklini and their allies, and it is to be noted that the head is most apt to be alutaceous in specimens from more Northern regions. This is one of the most difficult groups of the genus for study, Many of the species resemble each other very closely, and it is by no means improbable that some of them may have to be united when more collecting shall have been done in Alaska and the extreme Northwest. A large number of those herein contained were de- TRANS. AM. ENT. SOC. XXIV. FEBRUARY, 1897. 62 AMERICAN COLEOPTERA. scribed by Mannerheim and Motschulsky, and as these author’s de- scriptions are very meagre and their types in European collections, it has been impossible to identify all of the species described by them. B. kuprianovi and biimpressum, of Mannerheim, remain unidentified, while ovipenne Mots., although unknown to me in nature, is placed as a synonym of kuprianovi on the authority of Gemminger and Harold. To breve Mots. I have referred several specimens, which, after careful study of his and of Mannerheim’s descriptions, seem, without much doubt, to belong to that species. The following table of those known to me has been prepared with the hope that it may afford some assistance in their separation : Large species. Form depressed; thorax slightly wider than long, as wide at base as apex; elytra finely striate, the strie entire, very finely or obsoletely punc- tulate; legs piceous. Length .27-.35 inch......... planatum Lec. Smaller species [less than .25 inch. ] Elytra, with the strie Impunctate, entire. <.-.o- sc se se wielisewie ce + ow cusieieveneiere 2! Elytra with? the striae punctate. «206 66s. seven ns ssssereee on erehra epee 4. 2. Elytra distinctly wider than the thorax. « «.2%5 si. tatstsotio cele c roleleeeceeiere 3y Elytra only slightly wider than the thorax, finely striate, the outer strie very fine. especially towards the tip; depressed ; black. more or less bronzed ; thorax nearly twice as wide as long, sides arcuate to base, hind angles obtuse, but not rounded ; legs black. Length .17-.23 inch. incertum Mots. 3. Form depressed. Elongate ; thorax distinctly narrower at base than apex, sides arcuate in front, at most obsoletely sinuate behind, hind angles obtuse, but not rounded: elytra usually brownish, moderately deeply striate; legs rufo-piceous. Length .16-.19 inch...........-.. simplex Lec. mss. Slightly broader; thorax scarcely narrower at base than apex. Sides of thorax arcuate in front, sinuate behind, hind angles rectangular ; elytra often tinged with brown, rather more finely striate; legs vary- ing from rufo-piceous to black. Length .16-.20 inch. planiusculum Mann. Smaller: sides of thorax arcuate in front, obsoletely sinnate behind, hind angles sub-obtuse ; elytra moderately deeply striate ; color bluish black ; legs black, tibize and tarsi scmetimes piceous. Length .12-.16 inch. com planulum Mann. Form slightly convex. Elytra nearly oval; thorax narrower at base than apex ; form elongate. Thorax slightly wider than long, hind angles rectangular; elytra finely striate, the striz less marked at sides and tip; color eneo-piceous or nearly black, elytra usnally tinged with brown; legs rufo-piceous or Piceous. Length .17-.21 inch.......-.. -..--.--5. funmereum Lec Thorax about one-half wider than long, less convex, hind angles subacute ; elytra more deeply striate, scarcely less deeply at sides and apex; color black, strongly tinged with blue; legs black, tibie and tarsi more or less piceous. Length .19-.24 inch......... nigrovcoeruleum n. sp. ROLAND HAYWARD. 63 Elytra oblong-oval; form broader and less convex. Thorax about one-half wider than long, scarcely narrower at base than apex, sides obsoletely sinuate behind, hind angles subrectangular ; elytra more than one-half wider than the thorax, moderately deeply striate, dorsal punctures large ; legs black. Length .16-.21 inch. quadrifoveolatum Mann. Thorax about one-half wider than long, as wide at base as apex, sides not sinuate behind, hind angles sub-obtuse; elytra about one-half wider than the thorax, finely striate. more finely at sides and tips; legs rufo-piceous. Length .18-.20 inch....-.----+-++. maeklini Lec. mss. 4. Thorax slightly narrower at base than apex. Broad, slightly depressed ; black, usually bronzed, very shining; elytra finely striate, with five or six striz, the first only entire; legs black. Length SUAVE hive ipa a iO aa OOS OO OOO OOO ONO Toomer. breve Mots. Elongate, depressed ; black, slightly seneous; sides of thorax arcuate in front oblique behind, hind angles obtuse, but not rounded; elytra finely striate, the strie entire, very fine at sides and tip; legs piceous or nearly black. Length .16-.20 inch......-.---- nebraskense Lec. 27. B. planatam Lec.—Form moderately broad, very depressed; color nearly black, often more or less eneous, moderately shining, the elytra usually tinged with brownish. Head as wide as the thorax at apex; palpi black; an- tenne rather more than one-half the length of the body, nearly black. Prothorax slightly wider than long, as wide at base as apex, slightly rugose at base ; apex nearly truncate; median line distinct, abbreviated in front; transverse impres- sions distinct, the anterior angulate; basal impressions broad, deep, bistriate ; sides with the margin distinctly reflexed, arcuate in front, feebly sinuate behind ; hind angles rectangular, carinate. Elytra about one-half wider than the thorax, oblong-ovate, moderately finely striate; strive entire, very finely or ohsoletely punctulate, the fifth feebly sinuate near the apex and grooved at tip; third stria with the first dorsal puncture slightly in front of the middle, the second about one-fifth from apex; intervals flat. Beneath black, shining. Legs varying from piceous to black. Length .27-.35 inch; 6.75-8.75 mm. Our largest species of the genus. It is easily distinguishable by its size from the others of the group. The form-is usually very de- pressed, rather less so in Pacific coast specimens. The color is usually nearly black, frequently with more or less zeneous lustre, the elytra often brownish. The striz are very finely or obsoletely punctulate, rather more distinctly so in specimens from the extreme Northwest. At first sight it recalls certain species of Platynus. It occurs in the Lake Superior region, the Rocky Mountains, Nevada, Oregon, Washington and British Columbia. I have taken it abundantly at various localities in the more mountainous parts of Colorado. 28. B. simplex Lec. mss.—Form slender, elongate, slightly depressed ; color nearly black, shining, the elytra usually more or less brownish. Head as wide as the thorax at apex; palpi piceous ; antennze about one-half the length of the TRANS. AM. ENT. SOC. XXIV. FEBRUARY, 1897. 64 AMERICAN COLEOPTERA. body, piceous. Prothorax scarcely one-half wider than long, narrower at base than apex, scarcely rugose at base ; apex nearly truncate; median line deep, ab- breviated in front and usually behind; transverse impressions distinct; basal impressions deep, bistriate; sides with the margin distinctly reflexed, arcuate in front, oblique, obsoletely sinuate behind; hind angles obtuse, but not rounded, carinate. Elytra about one-half wider than the thorax, oblong-oval, moderately deeply striate ; strie entire, impunctate. less deeply impressed at sides and tip, the fifth grooved at apex ; third stria with the first dorsal puncture slightly in front of the middle, the second about one-fourth from apex; intervals slightly convex. Beneath black, shining. Legs varying from rufo-piceous to piceous. Length .16-.19 inch; 4-4.75 mm. No description of this species has heretofore been published. I have accordingly adopted the name used by Dr. LeConte in his “List of North American Coleoptera” (Smiths. Misc. Coll., 1863, vi, p. 14) and in his collection, and under which specimens have been distributed by him. It is quite closely allied to planiusculum, but differs by its usually more elongate, less depressed form, with the thor&x more narrowed behind and the hind angles obtuse. The basal impressions are less broad and the sides are oblique, or at most only obsoletely sinuate behind. The legs vary from nearly rufous to piceous. It is distinctly Northern in its distribution, occurring in Labrador, Canada, the Hudson Bay Territory, New Hampshire, Vermont, Massachusetts and the Lake Superior region, and [ have seen one specimen from as far South as Missouri. It has also been taken at Highlands, N. C., by Mr. Blanchard. 29. B. planiusculum Mann.—Form moderately broad, depressed : color nigro-eeneous or sneo-piceous, the elytra often more or less brownish, shining. Head searcely narrower than the thorax at apex; palpi piceous: antenne about one-half as long as the body, piceous. Prothorax about one-half wider than long, scarcely narrower at base than apex, finely rugose at base ; apex truncate; median line deep, abbreviated before and behind ; transverse impressions distinct; basal impressions broad, deep, bistriate; sides with the margin distinctly reflexed, slightly areuate in front, more or less sinuate behind ; hind angles rectangular, earinate. Elytra about one-half wider than the thorax, oblong-oval, rather finely striate; striz entire, impunctate, the outer ones less deeply impressed. the fifth grooved at tip; third stria with the first dorsal puncture slightly in front of the middle, the second about one-fourth from apex: intervals nearly flat. Beneath black, shining. Legs varying from nearly black to rufo-piceous. Length .16- .20 inch; 4-5 mm. Broader and more depressed than the preceding, from which it also differs by the sides of the thorax sinuate behind, the hind angles rectangular, and the base scarcely narrower than the apex. It exhibits considerable variation in the series before me. The ROLAND HAYWARD. 6: head is either nearly or quite as wide as the thorax at apex. The depth of the sinuation of the sides of the thorax varies slightly, as does also the width at base as compared with that at apex. The elytra vary somewhat in the depth of the striation and in color from brownish to black. Lastly, the legs‘exhibit every gradation of color (8 from rather pale rufo-piceous to nearly black. It occurs abundantly in the Rocky Mountain region, extending westward to the Pacifie coast and northward to Alaska. 30. B. complanulum Mann.—Rather short, depressed ; color black, often slightly tinged with blue, shining. Head as wide as the thorax at apex; palpi black ; antennee about one-half the length of the body, black. Prothorax about one-half wider than long, scarcely narrower at base than apex, finely rugose at ’ base; apex nearly truncate ; median line distinct, abbreviated before and behind; transverse impressions distinct; basal impressions broad, deep, bistriate; sides with the margin narrowly reflexed, slightly arcuate in front, obsoletely sinuate behind ; hind angle sub-obtuse, but not rounded, carinate. Elytra scarcely one- half wider than the thorax, oblong-ovate, moderately deeply striate ; striae entire, impunctate, scarcely less deep at sides and apex. the fifth grooved at tip; third stria with the first dorsal puncture about one-third from base, the second about one-fourth from apex; intervals nearly flat. Beneath black, shining. Legs black, the tibiz and tarsi sometimes piceous. Length .12-.16 inch; 3-4 mm. The smallest species of the group. It is most nearly related to planiusculum, but is quite easily recognizable by the above charac- ters. The thorax varies somewhat in width as compared with its length. It occurs on the Pacific coast from Alaska to California, extending eastward to the Rocky Mountains, but appears to be local. 31. B. funereum 3 Lec.—Form rather elongate, slightly convex; color nearly black, feebly eeneous, the elytra more or less tinged with brown, shining. Head searcely narrower than the thorax at apex: palpi piceous; antennze about one-half the length of the body, piceous. Prothorax moderately convex, slightly wider than long. slightly narrower at base than apex, rugose at base ; apex feebly emarginate; median line distinct, usually abbreviated in front; anterior trans- verse impression feeble, the posterior deeper; basal impressions broad, deep, bi- striate ; sides with the margin distinctly reflexed, arcuate in front. sinuate behind A hind angles rectangular, carinate. Elytra about one-half wider than the thorax, nearly oval, finely striate: strie entire, impunctate, the outer ones less deeply jmpressed, the fifth terminating in a groove; third stria with the first dorsal puncture slightly in front of the middle, the second about one-fourth from apex ; intervals nearly flat. Beneath nearly black, shining. Legs varying from rufo- picecus to piceous. Length .17-.21 inch: 4.25-5.25 mm. This species is most nearly allied to nigrocwruleum, quadrifoveola- tum and maeklint. With the former it agrees in having the elytra nearly oval. From all it differs by its proportionally longer and TRANS. AM. ENT. SOC. XXIV. (9) MARCH, 1897. 66 AMERICAN COLEOPTERA. more convex thorax, which is at most only slightly wider than long, and is more narrowed at base than in the two species last named, with the sides more distinctly sinuate behind. The form is more elongate than in any except nigroceruleum. Described by LeConte from the Saskatchewan River. It is known to me also from Alaska, Vancouver Island, British Columbia, Wash- ington, Dunsmuir, Cal. and Nevada. 32. B. nigrocoeruleum n. sp.—Form moderately elongate, slightly con- vex; color bluish black, shining. Head as wide as the thorax at apex; palpi black ; antenne about one-half as long as the body, nearly black. Prothorax less convex than in funereum, about one-half wider than long, slightly narrower at base than apex, finely rugose at base; apex feebly emarginate; median line dis- tinct, abbreviated before and behind; transverse impressions distinct; basal im- pressions broad, deep, bistriate ; sides with the margin distinctly reflexed, arcuate in front, distinctly sinuate behind: hind angles subacute, carinate. Elytra rather more than one-half wider than the thorax, nearly oval, rather finely striate ; strie entire, impunctate, scarcely less deeply impressed at sides and tip, the fifth ending in a deep groove; third stria with the first dorsal puncture about one-third from base, the second about one-third from apex: intervals nearly flat. Beneath black. shining. Femora black, tibize and tarsi piceous. Length .19-.24 inch; 4.75 6 mm. Most nearly related to funereum, but sufficiently distinet by its less convex and proportionally wider thorax, with the hind angles subacute, and by the more deeply striate elytra, with the strive scarcely finer at sides and tip, as well as by its different color. The size averages slightly larger. The seven specimens known to me are all from Washington, For the single example in my cabinet Iam indebted to Dr. Horn. 33. B. maeklini Lec. mss.—Form moderately robust, sligltly convex ; color black, slightly eneous, shining, the elytra tinged with brown. Head as wide as the thorax at apex; palpi piceous; antenne about one-half the length of the body, piceous, the first joint dark rufons. Prothorax about one-half wider than long. as wide at base as apex, rugose at base; apex nearly truncate : median line distinct, extending between the transverse impressions, which are distinct ; basal impressions broad, moderately deep, bistriate ; sides with the margin nar- rowly but distinctly reflexed, arcuate in front, oblique behind; hind angles sub- obtuse, but not rounded, carinate. Elytra about one-half wider than tke thorax, oblong-oval, finely striate; strive entire, impunctate, more finely impressed at sides and apex, the fifth grooved at tip: third stria with the first dorsal puncture slightly in front of the middle, the second about one-fourth from apex ; intervals flat. Beneath nearly black, shining. Legs rufo-piceous. Length .18-.20 inch; 4.5 5mm. Broader and less elongate than funerewm, with the thorax pro- portionally wider as compared with its length, the sides not sinuate ROLAND HAYWARD. 67 behind and the hind angles sub-obtuse. It is slightly more convex and less broad than quadrifoveolatwm, with the elytra less deeply striate and the dorsal punctures smaller, the legs paler, and the first joint of the antenne rufous. The elytra are less oval than in the first-named species. This species has not heretofore been described. The name here used was proposed by Dr. LeConte in his “ List”? (Smiths. Mise. Coll., 1863-6, vi, p. 14) for “incertum var. Mann.” Mannerheim’s de- scription (Bull. Mose., 1852, xxv, p. 301) undoubtedly applies to the species described as incertwm by Motschulsky, and no variety is indicated by him. LeConte’s type was received by him from Europe, probably from Chaudoir, and it seems to me most likely that it was sent under the name which LeConte proposed to supplant. The only specimens known to me are in the LeConte collection. The type is probably from Alaska, The other three are from British Columbia. 34. B. quadrifoveolatum Mots.—Form moderately broad, feebly con- vex; color black, slightly eneous. Head as wide as the thorax at apex; palpi black; antenne about one-half the length of the body, black. Prothorax about one-nalf wider than long, scarvely narrower at base than apex, slightly rugose at base ; apex nearly truncate; median line deep, abbreviated before and behind; transverse impressions moderately distinct; basal impressions broad, deep, bi- striate; sides with the margin narrowly reflexed, slightly arcuate in front, at most obsoletely sinuate behind; hind angles subrectangular, carinate. Elytra more than one-half wider than the thorax, oblong-oval, moderately deeply striate ; strie entire, impunctate, the outer less deeply impressed, the fifth slightly grooved at tip; third stria with the dorsal punctures large, the first about the middle, the second about one-fourth from apex ; intervals nearly flat. Beneath black, shining. Legs black. Length .16-.21 inch; 4-5.25 mm. This species seems most nearly related to funerewm, but may be recognized by its broader, less convex form, proportionally wider thorax as compared with its length, with the base scarcely narrower than apex and the sides at most obsoletely sinuate behind. The elytra are less deeply striate, with the dorsal punctures larger and differently placed, and the legs are black. As is the case with many of the species of this group, I have had but a small amount of material for study, as it seems rare in collec- tions. It is known to me from Alaska, Vancouver Island and Washing- ton. 35. B. ineertaum Mots.—Form broad, moderately depressed ; color varying from black or bluish black to eeneous, shining. Head as wide as the thorax at TRANS. AM. ENT. SOC. XXIV. MARCH, 1697. 68 AMERICAN COLEOPTERA. apex ; palpi black ; antennee about one-half as long as the body, black. Prothorax nearly twice as wide as long, scarcely narrower at base than apex, finely rugose at base; apex slightly emarginate: median line deep, abbreviated before and behind; transverse impressions distinct ; basal impressions broad, deep, bistriate ; sides with the margin narrowly but distinctly reflexed, arcuate from apex to base: hind angles obtuse, but not rounded, carinate. Elytra slightly wider than the thorax, oblong-ovate, finely striate; strize entire, impunctate, the outer some- times so fine as to appear nearly obsolete ; third stria with the dorsal punctures large, the first slightly in front of the middle, the second about one-fourth from apex; intervals nearly flat. Beneath black, shining. Legs black. Length .17- .23 inch; 4.25-5.75 mm. As above defined this species seems distinct from any of the group. After a careful study of the descriptions and of a moderate series of specimens I am convinced that tetrag/yptwm Mann. is synonymous. It seems most closely related to breve Mots., from which it differs by its entire, impunctate strie. It is also somewhat larger than that species, and is usually less bronzed. The strive of the elytra vary considerably in depth, in some examples being so fine as to appear almost obsolete, although after careful examination they are seen to be entire, though very finely impressed. The fifth stria is grooved at tip. It occurs as far east as Marquette, Mich., at Bayfield, Wis. (Wick- ham), in the Yellowstone Park, Wyo. (Bowditch), throughout the mountainous parts of Colorado, New Mexico (Snow), Nevada, and on the Pacific coast from California to Alaska. It was taken in moderate abundance by Mr. Bowditch and myself near the edge of the melting snow in the mountains southwest of Montrose, Col., at an altitude of about 10,000 feet. 36. B. breve Mots.—Form broad, slightly depressed; color black, usually bronzed, very shining. Head as wide as the thorax at apex; palpi black; an- tenn about one-half the length of the body, black. @rothorax more than one- half wider than long, slightly narrower at base than apex, slightly rugose at base ; apex slightly emarginate ; median line distinct, sub-entire ; transverse impressions feeble, basal impressions broad, moderately deep, bistriate ; sides with the margin narrowly reflexed, arcuate in front, oblique behind; hind angles obtuse, but not rounded, carinate. Elytra nearly one-half wider than the thorax, oblong-ovate, finely striate: strie finely punctate, all but the first abbreviated behind, the fifth represented by a groove at apex, the seventh wanting, the sixth often nearly ob- solete: third stria with the first dorsal puncture about one-third from base, the second about one-third from apex; intervals flat. Beneath black, shining. Legs black. Length .15-.18 inch ; 3.75-4.5 mm, The species above described agrees with Motschulsky’s description so far as it goes, as well as with that published by Mannerheim some vears later. It therefore seems best to me to refer the specimens ROLAND HAYWARD. 69 from which it was taken to B. breve, although of course one cannot be absolutely sure of the correctness of the identification except by a comparison with the types. From B. incertum it differs by the punctate striz of the elytra, all but the first of which are abbreviated behind, while from nebraskense, which agrees with it in having the elytral striz punctured, it is dis- tinct by its broader form, by the thorax less narrowed behind and the abbreviated strize of the elytra. The only specimens known to me are from the Yellowstone Park, Wyo. (Bowditch), and Nevada. It was described by Motschulsky from Sitka. 37. B. nebraskense Lec.—Form slightly elongate, depressed ; color black. slightly «neous, shining. Head scarcely as wide as the thorax at apex; palpi black: antennz about one-half as long as the body, black. Prothorax more than one-half wider than long. very distinetly narrower at base than apex, slightly rugose at base; apex truncate; median line distinct, abbreviated before and he- hind; transverse impressions distinct; basal impressions broad, deep, bistriate ; sides with the margin narrowly reflexed, arcuate in front, oblique behind, at most obsoletely sinuate in front of the hind angles, which are obtuse, but not rounded, carinate. Elytra less than one-half wider than the thorax, oblong-ovate, finely striate; strize entire, finely punctate to behind the middle, more finely impressed at apex, the outer ones nearly effaced; third stria with the first dorsal puncture about one-third from base, the second about one-fourth from apex: intervals flat. Beneath black, shining. Legs piceous or nearly black. Length .16-.20 inch; 4-5 mm. The thorax is more narrowed behind in this species than in any other of the group, and the elytral strive are finely punctate. As remarked by Dr. LeConte, “it bears a strong resemblance to a Blechrus.” It occurs throughout a large part of the region west of the Mis- souri River, being known to me from Nebraska, Wyoming, Colorado, New Mexico, Utah, California, Oregon, Washington, Alberta and British Columbia. Group viii. transversale. Maxille with the outer lobe biarticulate. Frontal grooves single, straight, parallel; eyes moderately large and prominent. Prothorax trapezoidal, scarcely convex, the basal impressions either unistriate or feebly bistriate, with the outer stria very small. Elytra sometimes maculate, with two dorsal punctures on the third stria; humeri rounded ; eighth stria not distinct from the margin. In many respects the present group seems intermediate between the last and the next. With the former it agrees in the form of the TRANS. AM. ENT. SOC. XXIV. MARCH, 1897. 70 AMERICAN COLEOPTERA. thorax, but the basal impressions are at most but feebly bistriate with the outer stria very small or obsolete. The elytral markings, which occur in transversale and rarely in lugubre, recall the next group. The legs are entirely rufous or testaceous, except in trans- versule, in which the femora are rarely piceous. The five species known to me may thus be separated : Basal impressions of thorax with the outer stria small, but distinet. Thorax distinctly narrower at base than apex. sides distinctly sinuate behind, hind angles rectangular; form very slender, elongate, depressed ; head large, scarcely narrower than the thorax ; elytra slightly wider than the thorax, subparallel, moderately deeply striato-punctate, the striz entire; legs tufous. Length .21—.25 inch: «. oreo epee levis wia)'s o\'ev'e, istle 1s wic 4 fe; aisic\ si eles) elareiecore aes Species black and yeliow...... adaperieneiere SueMetefeveues len euicte cianeashsvenste viehetievai merci De Species brown and yellow.......-- ERD RG ORT ROC O OE aOR DA cIO a Onis erabro. 3. Flagellum ferruginous beneath. ..-...-..seceeeeeeccccccccees maculata, BH aoe arrears. ves ciate ove ers c1.c.5 aes ro'ley siorecteresere iors aywisate etereva wuss alee leuelete soble sls stary 4, 4. The broad white borders on the third, fourth and fifth abdominal segments deeply notched (ordivid ed) 4 lecdiwatheaes second pleural area; 9. Avgular, or third own fauna are marked with a*. pleural area; MM. Median longitudinal car- inze; LL. Lateral longitudinal carinze; PP. Several characters, not here- Pleural carinz ; BB. Basal, transverse. or or- dinary transverse carinz; AA. Apical trans- tofore used in our classification verse caring; p. petiole of abdomen; sp. of the Ichneumonide, have *P¢le- been found to be of great value. One of these is the clypeus, G. C. DAVIS. 195 whether elevated, separated from the face or not, and the different forms which it assumes, especially at the apex. Another is the humeral cross nervure of the hind wing, whether broken or not, and if so, whether broken above or below the middle (see cut of the same which is broken above the middle at a, Fig. 1). A third, and very important character, is the areolets and carinz forming them, A completely areolated metathorax is represented in the accompanying figure, Fig. 2. Synopsis of the Tribes of Ichneumonide. 1. Abdomen more or less compressed, petiolate, rarely sessile or subsessile ; areolet usually triangular or Wanting. +... 6 cere eee cece eee eee ete e eens 2. Abdomen not compressed, or if so, as in some cases, it shows various other CITA C HOTS TICS ccs cre ta tm cierehc sgpsna arcane ore: austie’ ailast\ ove ibrene o ctaiel seve. supretayensualelel ole: see oe 10. 2. Basal segment of hind tarsi thickened......-..-+++s+-4+ ANOMALONINI. Basal segment of hind tarsi not thickened... 1... -e ee eee ee eee eee eens 3. 3. Middle tibie with a single spur -...+.-+++e+ee sees TRACHYDERMATINI. Maddile=tibizeswith two, SPUTS-i0% «+. e- cetes «fee ciee teres aeens soe sce sobisices 4, 4, Median vein of hind wing disappears towards the base; costal vein thickens as it approaches the front margin; the two sections of the radius form a MGA ME RN ASen Bos Boop ODO Odeo Oona meas moc can sudtianavenstianc PORIZONINI. Median vein does not disappear toward the base and the main vein does not thicken as it approaches the front margin; segments of the radius not at TIPDHtE ANGIES..- eee ce cece eee acne eee eee erect eee eee ee nese eese ees 5. 5. Posterior femora armed with a strong median tooth beneath. PRISTOMERINI. Postenion femoral without tooth! DMCA er cms ecto erste 1s rele aia ole sles sve «a's 6. 6. Stigma short and broad, wedge-shaped, scarcely twice as long as wide; wings without areolet; margin between vertex and occiput broken in the middle. CREMASTINI. Stigma elongate ..- 21sec eee eee ence cece nero cn teeter ere e eee eeeens vie 7. Third discoidal cell narrowed at base, rarely ever half as wide as the second recurrent nervure; ocelli large. ..-... eee eee ee ree eee ee eee eee rene te eee 8. Third discoidal cell about half, or more than half as wide as at apex; ocelli SITLED leven earehanersieevetaccuckstele aia) tersteterek tensive temslst ono) Mok steer arelisucranenel se eteneieke eharouetanctetoneus 9, 8. Antenne clavate; both frontal depressions very large and entirely separate. HELLWIGINI. Antenne not clavate; frontal depressions not large, and not entirely separate. OPHIONINI. 9. Humeral cross-neryure of hind wing either straight or broken below the MINI Gl @eaeesy-jeyeteuey=net ees aketateys laroncioh ae) ersiiens l-tey syle¥e ahs vers Moya eyenchats CAMPOPLEGINI. Humeral cross-nervure broken at or above the middle; abdomen subsessile GOUSESSILG eyetote erent aNajeneustareneieictavts televete fos silent stclsucharepal ofiayete teuate fe! sisters BANCHINI. 10. Abdomen deeply and coarsely punctured, sometimes aciculately so ; seutellum large, usually margined ; posterior tibize with two spurs; form robust. METOPINI. Abdomen rarely coarsely and deeply punctured, and if so the posterior tibiz lack the CWO SPUTS- --.-6 ssc csc sewers scree scemere es ere neem ereseceens id, TRANS. AM. ENT. SOC. XXIV. JULY, 1697. 196 AMERICAN HYMENOPTERA. i, 12. 13. 14. US), Face strongly protuberant and coarsely punctured; clypeus wanting, or SIMD eo ape 5 hae wcsy aves epe vous ostora jane (ote e), ore tahoe 0)5u'0, rls, wicercaae fot oyehtena dolenelonehe mnie tone Renerenels 12 Face not strongly protuberant, or if so the clypeus is distinct........-.-- 13: Scape small, or normal size. . 2... +-.- +e. ee eee eee cece eee EXOCHINI. Scape large and much elongated... --.+...++e+eeeeeees ORTHOCENTRINI. Upper tooth of mandibles bidentate; abdomen sessile, basal segment nearly QUACTATE. 6 oe eee ee re eee renee tees ee ten esees ee cocccens BASSINI. Mandibles bidentate, seldom toothless... +... see cere eee ce cee eee ee eee eee 14. Posterior tibiz without spurs, or at most with a single small one. EXENTERINI. Posterior tibice with GwoO: Spurs: +. 0.0% sae. seins ecinieienie mls so - nlaheterei eee 15. 5. Abdomen sessile, or subsessile; ovipositor usually long ...--+++.++ cesses 16. Abdomen petiolate, or if sessile, the ovipositor is short ...-..+-++.++++05- Wee . Dorsum of abdominal segments usually uneven because of impressions; seg- ments usually plainly punctured. ..--. eee eee c eee cere eee ees PIMPLINI. Dorsum of abdominal segments without impressions and seldom much pune- BUT. apetat reuse tore yore, =e u