840 ACADEMY OF NATURAL SCIENCES 



gitudinal indentations near the suture, of whicli the anterior one 

 is widest and deepest, with a slight impressed line extending 

 obliquely to the base ; tip decurved and rounded : beneath green, 

 tinged with brassy : feet rufous : thighs at tip brassy -green, pos- 

 terior pair with a prominent angle beneath. 



Length rather more than a quarter of an inch. 



The smallest species I have seen j it occurs in the Middle 

 States, and I have also received a specimen from Dr. T. W. Har- 

 ris, of Milton, Massachusetts. 



5. D. CONFLUENTA [coNFLUENS.] — Brassy, tinged with cu- 

 preous ; head with two tubercles ; second joint of the antennae 

 shortest; elytra truncate at tip. [294] 



Head rather obscure; a profound frontal line, on each side of 

 which is an oblong tubercle; punctures confluent, small : an- 

 tenna not quite half the length of the body, fuscous, first joint 

 metallic, polished, third joint distinctly longer than the second : 

 thorax nearly square, a little narrowed to the base, with very dis- 

 tinct confluent punctures, and a slightly impressed dorsal line ; 

 lateral tubercles not prominent; anterior tubercles not distinct: 

 scutel cinereous : elytra with punctured striae ; two subsutural 

 impressed spaces, of which the exterior extends obliquely to the 

 middle of the base ; tip hardly decurved, truncated : posterior 

 thighs with a small angle beneath. 



Length less than three-tenths of an inch. 



I have found this insect in Pennsylvania, and also in Missouri. 

 In some specimens, lateral impressed spaces of the elytra are 

 very distinct, but in general they are not perceptible. 



LEMA Fabr. 



L. MELANOCEPHALA. — Above rufo-testaceous ; head and all 

 beneath black. 



Head deep black, inequal ; thorax rufo-testaceous, polished, 

 abruptly very much contracted on the middle of each side, pre- 

 senting the appearance of a profound vertical groove in that part: 

 elytra rufo-testaceous, polished, with almost regular series of im- 

 pressed punctures : beneath black, immaculate. 



Length nearly three-tenths of an inch. 



Resembles the trilineata Oliv., in form, but it is [ 295 ] readi- 



[Vol. V. 



