OF 111 . I 141 11. l> M \ i i -. \~[t 



densius ad latera, elytris a basi subangnstatis, Btriia impressia punctata, interatitua paroe punctul 

 antennarum articulo 3'° Bequenti sequali, pedibu 7— *48. 



Nebraska Territory. The difference in the form of the thorai of the two bi n - is \. rv 

 great: in the male the sides converge regularly, with scared) an) curvature; m the fe- 

 male the disc is more convex, and the sides arc considerably roundi d, < Bp< cially in front : 

 the third joint of the antennae is wider than usual, and marly as wide a- the fourth. 



- • ( '• p e r t i n a x , piceo-niger, parce longiua cinen ncava, thorace latitu- 



dine subbreviore, convexo, lateribus pi ,::, lie, ante medium valde rotundati 



punctia in medio fere obsoletis, pi stice canaliculato, elytria lateribna paralli lis, postice oblique ai 

 tatis, striia punctata vix impreasis, interatitiia parce Bubtiliter punctulatis, antennie | 

 illis articulo •'!'" Bequente non breviorc. Long. -42. 



i.i Say, Trans. Am. Phil. Soc. 6, L85. 



Massachusetts and Georgia. An easil) recognised species: the punctures of the Mo- 

 rax, anteriorly and at the sides, are tolerably large; in the middle they are almost ob oleic. 



27. ( '• dubius, piceo-niger, cinereo-pnbescens, fronte non concava, tborace latitud 

 viorc. lateribua rectia, convergent;! rotund 1 medium, i 



canaliculato, elyti ia antice fere paralli lis, Btriia punctatia vix impressia, interatitiia rugose punctu 

 pedibus antennisque run's, his articulo '■'<"' sequente non breviorc. Lou..'. ■ 



Onespi cinn n. New York. The deep posterior dorsal channel, and the fine punctures ol the 

 interstices of the elytra will distinguish this from the next Bpecics: it ma) possibly be lh< 

 male of the preceding sp< cics, but there is no e\ idence of it exc< pt the general similnrit) 

 of sculpture: the pubes • d< nser and no! so long: the thorax, how \er. bears prclt) 



much the Bame n lation in the two species as in the two •■ 



C. t e n a x , piceo-ni i conoava, thorace latitudine 1 



antrorsum Bubanj iulo rotundatis, parce eqnaliter pm 



aolete canalicula) . nctatis, interatitiia minus Bubtiliter pun 1 i 1 >tim anti i i 



runs, his artici paulo breviore. Long. *3 — -85. 



/ 3ay, Trai Am. Phil. 5 



Middle and Southern Stat< -. The punctures of the interstices of the elytra are bs Ini 

 a those of the stria?, and will distinguish this from all other sp< cies bi re d< Bcribi d. The 



cimen are tolerably deep; in i\\<> oilier- ihey are not im| I 



m the male are narrowed Blightlyfrom the base; in the female the) appear nearl) ; 



I. C. American 

 latitudine non loi urn rotunda) 



■ 



i , I ill. 



/ ■ 1 1. •' • . 1", 7 I : 



\ \er\ common - the punctures of the thorax are hardl) Bmallcr at the inidd 



the small size of the third joint of ihe antennas will distinguish it from an) with whit 

 is liable t<> be confounded: Erichson mentions n< ither tin-, nor the post< rior dorsal i h 



. - . 7S 



