46 DESCRIPTIONS OF NEW SPECIES. 



One male from the sea shore of Long Island, X. York. Re- 

 markably different in size and sculpture from our other species. 

 The head, thorax, and elytra are nearly of the same width, and 

 the body is more cylindrical than usual. The sixth ventral seg- 

 ment is widely cleft to the base, with the sides of the cleft paral- 

 lel ; the fifth is scarcely perceptibly impressed at the tip. 



160. C. cribratum. Nigrum, capite thoraceque pernitidis, illo elon- 

 gate, punctis perpaucis notato, thorace latitudine sesqui longiore, seriebns 

 dorsalibus 7 9 punctatis, punctisque paucis subtilibus versus latera, 

 elytris laete rufis, sutura antice basique nigricante, punctis magnis serie- 

 bus utrinque 8 vel 9 positis, abdomine subtiliter profunde punctate, 

 antennis rufis, pedibus pallidis. Long. -38. 



Illinois, rare. The sixth ventral segment of the male has a 

 small triangular emargination behind. 



161. C. serpentintlltt. Valde elongatum, nitidum, capite punctis 

 paucis notato, ante oculos nigerrimo, pone oculos Isete rufo oblique an- 

 gustato, thorace parce subseriatim punctato, nigerrimo, antrorsum paulo 

 angustato, elytris thorace longioribus rufo-testaceis, fortiter subseriatim 

 punctatis, macula communi scutellari nigro ; abdomine parce subtiliter 

 punctato Isete rufo, segmento primo ultimisque duobus nigris, palpis 

 pedibus antennisque rufo-testaceis, his articulis 2 7 infuscatis. Long. 

 38. 



Pennsylvania and Alabama. By the singular form of the head 

 this species recalls the genus Ophites Er. The color beneath is 

 black, with the 2d, 3d, 4th, and base of 5th ventral segments 

 red-testaceous. The 6th ventral segment of the male is triangu- 

 larly incised at tip. 



STIL.ICUS LATR. 



162. S. rildis. ^Eneo-niger opacus, capite thoraceque confluenter for- 

 titer punctatis, hoc subtiliter canaliculate, linea tenui dorsali Isevi, 

 elytris subtiliter punctatis nitidis limbo apicali pallido, abdomine sub- 

 tiliter punctulato, pedibus antennisque rufo-testaceis. Long. -19. 



Pennsylvania, rare. Twice the size of S. dentatus, with the 

 head and thorax less coarsely punctured. 



ECHIASTER ER. 



163. E. opacus. Valde elongatus, piceo-niger, omnium subtilissime 

 punctulatus, pube subtili cinerea vestitus, elytris limbo apicali flavo, 



