178 Journal New York Entomological Society. [Vol. xm. 



palpus, and entirely independent of sex ; there is also, as in numerous 

 other Carabide genera, some variation in the number of anal setigerous 

 punctures. These variations are indicated categorically below : 



Stenolophus. — Presternum plurisetose at tip; anal setae variable. 

 In the majority of species there are two each side in both sexes but in 

 several species there is but one each side in the male. 



Tachycellus. — - Presternum plurisetose at tip ; anal setae one each 

 side in the male and two in the female, except iurbatus, in which 

 there are two each side in both sexes. 



Glycerius. — Presternum plurisetose at tip ; anal seta? two each side 

 in both sexes of nitidus, but in all the other species there is one each 

 side in the male and two in the female. 



Trichocellus. — Presternum plurisetose ; anal setae one each side in 

 the male and two in the female. Our only representative is the com- 

 mon cognatus, widely dispersed over the northern part of both con- 

 tinents ; there are several allied species in Europe. 



Bradycellus. — Presternum without setae ; anal setae two each side 

 in both sexes. 



Amerinus. — Prosternal and anal setae as in Bradycellus except that 

 the interior anal setae are not marginal. 



Our only species is Bradycellus linearis of LeConte. The species 

 is a very peculiar one and besides the tabular characters differs from 

 all our species of Bradycellus in its relatively small eyes and long 

 mandibles, sculpture, wider marginal bead of prothorax, the upper 

 surface of which is deeply sculptured and the lower surface sparsely 

 rather coarsely punctate. 



Acupalpus. — Presternum bisetose at tip in those species with several 

 dorsal punctures on the elytra ; non-setose in those with a single dorsal 

 puncture. Anal setae one each side in the male and two in the female. 



