Lac. Eroty. Lacordaire Monographie des Erotyliens. Lac. Chrys. 66 66 des Coléoptères, Subpentamères. Lap. Bup. Monographie des Buprestides par Laporte et Gory. du genre Clytus " 66 Mels. Melsheimer, in the Proceedings of the Academy of Nat. Sciences. Nm. Ent. Mag. Newman. The Entomological Magazine. Ol. Ins. Olivier, Entomologie. Coléoptères. P. Ac. The Proceedings of the Academy of Nat. Sciences. Putz. Cliv. Putzeys' Monographie des Clivina, in Memoires de la Société Royale des Sciences de Liége. Say Exp. Say, in Appendix to Long's Expedition to the St. Peters' River. Sch. Syn. Schönherr, Synonymia Insectorum. Sch. Schönherr, Genera et species Curculionidum. St. Ins. Germ. Sturm's Deutschland's Fauna, Insecten. Web. Obs. Weber, Observationes Entomologica. 1 L. moesta.-Nigro-subænea, nitida, thorace capite parum latiore, transverso, antice rotundato, impressione transversa anteriore profunda; anguste marginato, angulis posticis rectis elevatis; elytris tenuissime striatis, striis punctatis, interstitiis planissimis, 310 tripunctato: antennis nigris, concoloribus. Long. .16 unc. Found at Michipicotin on Solidago. Resembles L. viridis (Say) but easily distinguished, apart from color, by the narrower and longer head, and distinctly punctured striæ of the elytra. 2 C. reflexa.-Piceo-brunnea, pilosa, capite thoraceque grosse confertim punctatis, hoc latitudine breviore, postice angustato, angulis posticis obtusis non rotundatis, margine lato valde reflexo, elytris apice oblique sinuato-truncatis, striato-punctatis, interstitiis planis, disperse punctatis, 3io punctis 3 majusculis; antennis, palpis, pedibusque rufo-testaceis. Long. 4 unc. In sandy places. This species approaches very near to the Rocky Mountain one, which I have considered as cribricollis (Dej.), but the head and thorax are still more coarsely and densely punctured, and the latter more narrowed behind; the elytra are obliquely truncate, in some specimens they are rufous at base, but have no distinct humeral spot, the interstices are flatter, with smaller and more numerous punctures. 3 By an error of spelling, I formerly wrote Aplochile. D. apicalis. Subelongatus, nigro-æneus nitidus, clypeo bidentato, fronte angulatim leviter impressa, thorace ovali, latitudine fere longiore, antice vix angustato, elytris thorace parum latioribus, lateribus vix rotundatis, stria marginali ad humerum abbreviata, tenuiter striatis, striis ante medium punctatis, 2nda 7ma 8va que ad apicem exaratis, interstitiis planis 310 tripunctato, antennarum basi palpisque piceis, vel rufo-piceis. Long. 12 unc. The anterior tibiæ have the outer spine scarcely longer than the inner, and but slightly curved, on the outer edge is a distinct tooth, and above it two other very obsolete denticles. 5 D. æneolus. Æneus, elytris nitidissimis, clypeo valde bidentato, fronte transversim profunde impressa, thorace subgloboso, antice non angustato, lateribus antice leviter rotundatis; elytris fere parallelis, apice rotundatis, striato-punctatis, punctis pone medium externeque obliteratis, stria sutur aliapice distincta, duabusque aliis (exteriore longiore) brevibus exaratis, marginali ad humerum desinente, interstitio 3io tripunctato. Long. 15 unc. Two specimens. The terminal spines of the anterior tibiæ subequal, scarcely curved; the outer edge with two denticles, the superior scarcely visible. D. parvus.-This species is only half the size of D. globulosus, but like it has a transverse thorax, narrowed in front. The clypeus is less deeply emarginate, the frontal sulcus not so deep, the elytral striæ and points deeper: the internal terminal spine of anterior tibiæ only one half the length of the outer one; the external margin has but one denticle. Long. 09. 7 D. longulus.-This differs from D. globulosus, in having the thorax subglobose, (the length being equal to the breadth,) not narrowed in front; the elytra are more elongate, the striæ are deeper, and can be traced to the apex, although the points vanish at the middle. The 3rd interstice is 3-punctate, the 8th stria profound at apex; antennæ fuscous at apex; internal spine of anterior tibiæ 3-4 as long as the outer one, on the outer margin, the lower denticle acute, the upper one obsolete. Long. 11. 8 Erichson calls this group Anchomenus, and adds as a reason that Platyna (Wiedeman 1825) is a genus of Diptera. Before that time the three Bonellian genera were considered distinct, and therefore the name was not vacant; Brulle having been the first to unite these genera, had an unquestionable right to select either of the three names for the group. Moreover the name Platynus is suitable for the great majority of the species, and the day has long gone by in science, when a generic name may be changed because its meaning does not accord with the characters of all the species denoted by it. 9 P. atratus.-Niger nitidus, thorace rotundato, latitudine vix breviore, antice subangustato, basi utrinque late foveato, margine depresso, versus basin anguste reflexo, angulis posticis nullis; impress. basalibus brevibus distinctis; impress. transv. posteriore distincta; elytris thorace latioribus, profunde striatis, interstitio 3io 3-punctato. Long. 34. Very much like P. melanarius (Ag. melan. Dej.) but distinguished by the smooth basal foveæ and less reflexed margin. The elytral striæ are smooth in one specimen, obsoletely punctured in the other. P. carbo.-Niger, nitidus, thorace rotundato, latitudine paulo breviore, basi vix rotundato, angulis posticis valde obtusis, rotundatis, basi utrinque late foveato, margine depresso versus basin angustissime reflexo; imp. trans. posteriore profunda, basalibus minutis in foveis sitis; elytris thorace latioribus, tenue striatis, interstitiis planis, 3io 3-punctato. Long. 35. One specimen. Very like P. (Ag. Dej.), with the basal foveæ deeper and more defined, the reflexed margin narrower and the margin itself thickened. The base of antennæ and palpi have no tendency to become ferruginous. 10 P. ruficornis.-Elongatus, nigro-piceus nitidus, thorace fere plano, latitudine longiore, postice subangustato, basi cum angulis rotundato, margine versus basin anguste acuteque reflexo, non incrassato, impress. basalibus fere nullis: elytris ellipticis tenue striatis, interstitiis planis, 310 5-punctato, epipleuris palpis antennisque piceis, his apice rufis, pedibus rufo-testaceis. Long. 31. Varies with the 3rd elytral interstice 3-punctate. Twice the size of P. lenis, and distinguished by the thorax narrowed behind, basal impressions indistinct, the reflexed margin broader. P. retractus is much smaller, with a wider thorax and deeper basal impressions. 11 Under this name, following the example of Erichson, I have grouped all the American species of Dejean's Feronia, excepting the Poecilus, which are sufficiently distinct by the antennæ. In my catalogue of the Carabica, I admitted as distinct genera nearly all the groups proposed by other authors, and attempted to find natural characters for them. What success I have had in finding structural differences, the reader may be able to judge by referring to the work cited: suffice it to say, that the characters therein detailed are entirely too finely drawn for any practical purpose, and by the progressive variation which accompanies the variations of form and sculpture, plainly indicate the existence of one extensive and natural genus: and fortified as I am by the example of Erichson, and the counsel of Zimmerman, I hesitate no longer to merge them into one group, under the name quoted above. An attempt has been made to separate under the name Hypherpes (Chaudoir) all the species without elytral punctures. But the characters of this group will be found as ill-defined as those which have just been suppressed. Feronia lachrymosa (Nm.) can scarcely be told from adoxa but by the superior size, and the presence of elytral punctures; surely it would be the destruction of all natural classification, to separate into different genera, two such closely allied species. 12 I have had no opportunity of comparing with European specimens, and give the species as identical on the authority of Kirby and Klug, having in my cabinet an Oregon specimen, which has been actually examined by the latter gentleman. Dr. Zimmerman thinks it to be different, and proposes the name septentrionalis, which must therefore be adopted if the species prove distinct. 13 P. tenuis.-Elongatus, niger nitidus, thorace capite vix latiore, latitudine parum breviore, quadrato, postice leviter angustato, lateribus pone medium sinuatis, angulis posticis rectis prominulis, basi utrinque profunde impresso, bistriato, punctatoque : elytris tenue striato-punctatis, interstitio 3io 3-punctato; palpis pedibusque rufo-piceis. Long. 32, lat. 14. Readily known by its-narrow form: the head is constricted and punctured behind the eyes: the elytral striæ are fainter towards the apex, which is not at all sinuate. 14 I have merged into Amara the group Celia (Zim.), as it differs from the typical species neither in habitus nor characters, the sole ground for separation being a sexual character of slight import. I have also replaced in the genus, Zabrus avidus (Say) as it has not the characters of Bradytus, (to which I formerly referred it), the tibia being alike in both sexes. 15 I have a specimen which agrees perfectly with Dejean's description, but the thorax is more narrowed behind than in the figure (Icon. Col. Eur. 3, pl. 170, fig. 2.) No opportunity for direct comparison has yet occurred. The species is totally distinct from the two described by me in the 4th vol. of the Annals of the Lyceum. 16 C. elongatus.-Elongatus, gracilis, rufo-piceus nitidus, thorace quadrato, latitudine non breviore, antice subangustato, lateribus rotundato, angulis posticis subrectis, non rotundatis, basi utrinque bistriato leviterque punctato, elytris thorace latioribus, tenuiter striatis, striis ad basin leviter punctatis. Long. 4. & with the intermediate tibiæ strongly bidentate, the mentum tooth narrowed in front and deeply impressed. |