478 REVISION OF THE ELATEIUD«£ 



latitudine longiore, antrorsum modice angustato, lateribus latius rotundatis, sat grosse punctato, an- 

 gulis posticis bicarinatis, elytris a basi angustatis, striis punctatis subimprcssis, interstitiis parce 

 punctulatis, pedibus obscure ferrugineis, antennis articulo 3 10 sequente paulo breviore. Long. -53. 



Two specimens, Santa Fe, collected by Mr. Fendlcr. This species is related to tlie 

 two preceding, but differs by its narrower form, the thorax being proportionally longer, 

 and not wider than the elytra, less narrowed in front, and less rounded on the sides. 



21. C. parumpunctatus, nigro-piceus, cinereo-pubescens, fronte non concava, thorace latitu- 

 dine paulo longiore, antice praecipue versus apicem magis angustato, lateribus rotundatis, parce mo- 

 dice punctato, posticc subcanaliculato, elytris a basi angustatis, striis punctatis, paulo impressis, in- 

 terstitiis parce punctulatis, pedibus antennisque ferrugineis, his articulo 3'° sequente paulo breviore. 

 Long. -45. 



Melsheimer, Proc. Acad. Nat. Sc. 2, 150. 



Middle States. This species has very much the appearance of C. communis, but is 

 darker coloured, and has the punctures of the thorax somewhat smaller, and much less 

 dense: even at the sides they are not at all confluent; the posterior angles of the thorax 

 do not appear bicarinated; otherwise there is no special difference. 



22. C. verberans, fuscus, cinereo-pubescens, fronte non concava, thorace latitudine non lon- 

 giore, antrorsum valde angustato, lateribus rotundatis, parce modice punctato, angulis posticis vix 

 bicarinatis, elytris a basi angustatis, striis punctatis subimpressis, interstitiis parce punctulatis, an- 

 tennis pedibusque fusco-testaceis, illis articulo 3'° sequente sesqui minore. Long. "39 — -47. 



Two specimens, Maryland. Resembles exactly C. communis, but the thorax is less 

 rounded on the sides, and less densely punctured : there is no trace of a dorsal channel : 

 the inner one of the carina of the posterior angles is less distinct, and the third joint of 

 the antenna} is proportionally smaller, being about intermediate in size between the second 

 and fourth. 



23. C. emissus, longior, fuscus, cinereo-pubescens, fronte non concava, thorace latitudine non 

 longiore, lateribus parallelis, antice rotundatis, modice punctato, densius ad latera, angulis posticis 

 bicarinatis, elytris a basi subangustatis, striis punctatis subimpressis, interstitiis parce punctatis, an- 

 tennis pedibusque testaceis, illis articulo 3 io sequente sesqui minore. Long. -41. 



One specimen, Georgia. More cylindrical than the preceding, with the elytra less nar- 

 rowed posteriorly, and easily distinguished by the sides of the thorax being nearly parallel 

 for three-fourths of their length. The punctures of the thorax are finer and more nume- 

 rous than in the next species. 



24. C. infaustus, piceo-fuscus, longior, cinereo-pubescens, fronte non concava, thorace latitu- 

 dine longiore, lateribus rectis, paulo convergentibus, antice rotundatis, parce punctato, elytris a basi 

 angustatis, striis impressis punctatis, interstitiis parce punctulatis, pedibus antennisque castaneo-rufis, 

 his articulo 3'° sequente subbreviore. Long. "46. 



Georgia. The straight, slightly converging sides of the thorax, rounded only near the 

 apex, will distinguish this species: the posterior angles have only one carina. 



2"). C. C r i b u 1 o S u s , fuscus, longius cincrco-pilosus, fronte non concava, thorace latitudine non 

 longiore, antrorsum angustato, lateribus (maris fere rectis) feminse rotundatis, cribratim punctato, 



