OF PHILADELPHIA. 115 



Inhabits the United States. 



E. cylindriformis Knoch in Melsh. Catal. 



Body subcylindric, slightly metallic, hairy, punctured : head 

 confluently punctured : a prominent edge above the antennae, 

 which disappears before ; blackish-brasssy : antennae rufous, 

 compressed, longer than the thorax : thorax blackish, tinged 

 with brassy or violaceous ; punctures profound, subequally dis- 

 tributed ; an indented longitudinal line obsolete on the anterior 

 margin ; posterior angles prominent, excurved, slightly carinated : 

 elytra with equally distributed hairs ; dusky reddish-brown with 

 a slight brassy tinge, and with punctured striae ; interstitial lines 

 with minute punctures furnishing hairs : beneath black, polished : 

 feet and caudal margin rufous. 



Length nine-twentieths of an inch. 



This insect is not uncommon : it may be distinguished [177] 

 from E. metallicus of Melsheimer's Catalogue by its much les3 

 dilated form of body. 



[Belongs to Limonius. — Leg.] 



19. E. SANGUINIPENNIS. — Black; elytra sanguineous; tarsi 

 piceous. 



Inhabits the United States. 



Elater sanguineus Melsh. Catal. 



Body black, polished, punctured : antennae, second aud third 

 joints obscure rufous : elytra sanguineous, striate ; interstitial 

 lines punctured : tarsi piceous. 



Length three-tenths of an inch. 



This species approaches E. sanguinexis Lin. I found a speci- 

 men in the State of Illinois, and it occurs occasionally in Penn- 

 sylvania. 



20. E. RUBRICOLLIS. — Black; vertex and thorax rufous; ely- 

 tra striated. 



Inhabits the United States. 



Elater ruhricollis Melsh. Catal. 



Body black, punctured vertex obsoletely rufous : antennae, 

 second joint rufous : thorax rufous, edged with black : posterior 

 spines black ; a slightly impressed longitudinal dorsal line : elytra 

 striate ; interstitial lines convex, punctured : postpectus, disk 

 1823.] 



