330 PROCEEDINGS OF THE ACADEMY OF 



This species belongs to the division with the scutellum transverse, and 

 the front very slightly emarginate, and represents in North America L. clema- 

 tidis of Europe. 



ELMIS Latr. 



E. latiusculus, oblongo-ovalis, paulo convexus, niger supra nitidus, 

 subtilissime reticulatus, thorace latitudine summa breviore, a basi antrorsurn 

 fortiter angustato, lateribus modice rotundatis, disco parce punctulato, lineis 

 a margine reraotis antice convergentibus ; elytris punctato-striatis, intersti- 

 tiis parce uuiseriatira punctulatis, lateribus carinatis ; antenuis pedibusque 

 rufis. Long. 1*5 mm. 



In the mountain region of Pennsylvania; Mr. Ulke. This and the next 

 species belong to the second group of Eiichson (Ins. Deutschl., iii. 527), not 

 before known to be represented in our fauna. The characters above given 

 easily distinguish it from the European species described in his work. The 

 punctures of the striae of the elytra are but little larger, though less distant 

 than those of the intervals. 



E. nitidulus, oblongo-ovalis, angustior, convexus, niger supra nitidus, 

 subtilissime reticulatus, parce subtiliter pubescens, thorace latitudine summa 

 baud breviore, a basi antrorsurn, angustato, lateribus paulo rotundatis, disco 

 parce obsolete punctulato, lineis convergentibus ; elytris punctis magnis re- 

 motis seriatim positis, stria 4ta profunda, interstitiis uniseriatim punctulatis, 

 lateribus subcarinatis ; antennis pedibusque rufis. Long. l - 25 mm. 



New York; Mr. Ulke. Smaller and narrower than the preceding, and 

 easily recognized by the different sculpture of the elytra. The punctures 

 representing striae are large and distant ; the fourth stria is deeply impressed, 

 so that the fourth interval is slightly elevated. The scutellum is almost or- 

 bicular in this species ; in E. latiusculus it is somewhat oblong, or oval, 

 while in our vittate species (E. vittatus, bivittatus and 4-notatus) 

 it is elongate and triangular. I also observe that the base of the 

 prothorax is feebly emarginate in front of the scutellum in E. latiusculus, 

 though much less so than in Limnius oval is and fastiditus. In L. 

 el eg ans, the scutellum is oval rather than orbicular, and in the List I have 

 placed that species in Elmis ; but it would be preferable to adopt the opinion 

 of Lacordaire, (Gen. Col. ii. 509), and regard the differences as not sufficient 

 to separate the genera. 



DORCUS McLeay. 



D. co status. In my List of Coleoptera of North America a new species 

 is mentioned under this name, but, by inadvertence, does not appear 

 in the Descriptions which accompany that work. On examining the single 

 female upon which I proposed to found the species, I am rather dis- 

 posed to regard it as an extreme variation of D. p a r a 1 1 e 1 u s. It agrees, 

 in form, size and sculpture, with that species, except as regards the elytra, 

 which are not deeply striate with convex intervals, but have the suture and 

 four narrow costae on each, elevated, shining and punctured ; the broad 

 spaces between these costae, and the whole of the apex, are deeply and densely 

 punctured. On close examination I perceive here and there faint remnants 

 of striae in the broad punctured spaces, and the difference in sculpture, so 

 striking at the first view, may be regarded as produced by the suppression of 

 some of the convex intervals between the striae of D. parallel us, the 

 suture, the third, sixth, ninth and outermost ones only being left. The spe- 

 cimen was found in western New York. 



CANTHON Hoffm. 

 C. indigaceus, ovalis, convexus, nigrocyaneus nitidus, clypeo nigri- 

 cante antice bidentato, margine anguste reflexo, confertim rugoso, elytris vix 

 obsolete striatis. Long. 10 mm. 



[Dec. 



