OF PHILADELPHIA. 273 



More rounded and less sericeous than C. griseus Fab., and 

 somewhat larger than C. padi Gyl. 



LAMPYRIS Linn. Latr. 



1. L. RUFICOLLIS. — Blackish; antennae and thorax rufous. 

 Lampyris ruficollis Melsh. Catal. [162] 

 Head black, polished, with short hairs ; eyes rather small, 



prominent; antennas and palpi dull rufous : thorax transversely 

 oblong-quadrate, with short hairs, polished; anterior angles 

 rounded ; anterior margin not extended over the head ; rufous, 

 a little dusky before the middle : elytra blackish, with numerous 

 punctures furnishing short hairs : pectus rufous on the lateral 

 margin : tibia obscure rufous. 



Length three-twentieths of an inch. 



The smallest North American species I have seen, and very 

 distinct by its characters from any of them. It does not appear 

 to be endowed with the power of yielding light. 



[Belongs to HeJodes Latr., ( Cyplion Fabr.,) and subsequently 

 described as H. marg inicolUs Guerin, and H. frwjllis Zeigler ; it 

 varies in having sometimes a black dorsal thoracic spot. — Lec] 



2. L. ANGULATA. — Blackish-brown ; thorax yellowish, with a 

 vitta and lateral margin, black ; elytra margined with yellowish. 



Lampyris marginata Melsh. Catal. 



Body dilated : head dull rosaceous, with an obscure frontal 

 spot and vertex, blackish ; antennae simple, blackish, basal joint 

 pale; palpi blackish : thorax obtusely somewhat angulated before; 

 a dilated black vitta attenuated before, on each side of which to- 

 wards the base is a large pale rosaceous space, and towards the tip 

 each side a dull yellowish one ; lateral margin blackish ; a longi- 

 tudinal elevated line ; lateral margin a little excurved near the 

 posterior angles ; posterior edge arcuated each side : scutel 

 black : elytra with a broad outer margin and narrow sutural 

 margin and tip, yellowish : abdomen, terminal segments bright 

 yellow. [163] 



Length two-fifths of an inch. 



In general form, and color of the thorax, it resembles the 

 corrusca Linn., which, however, is destitute of colored margins 

 to the elytra, and its thorax is rounded before ; it is very difi'er- 

 1825.] 18 



