314 FAiriLT II. CAEABID^. 



177a ( ). DiPLocHiLA urPBEssicoLLis ai,teb>;a:>^s Casey. 



Differs from T.rpical impressicoUis only as shown in table. ;^ize the 

 same. 



Vigo and Lake comities : rare. 3Iay SO-Jime 7. 



ITS (712 I. DiPLOCHiLA OBTUSA Lcc., Ann. Lye. Xat. Hist.. IV. 1S4S. .':^.20. 



Black, feebly s hinint' : antennre reddish-brown ; tibiae and tarsi piee<:>us. 

 Thorax nearly one-half wider than Ion?, base wider than apex, sides feebly 

 curved, basal impressions deep. Elytral striaa not punctured ; intervals 

 feebly convex, the third without dorsal puncture. Length 11-12 mm. 



Eare: two specimens from Vigri County. April 11. 



XXIX. DiCELU? Bon. 1S13. (Gr., "two -pitted.") 



Black, violet or bronzed-purple beetles of large size. p<:issessins; 

 the eharacters of the tribe Lieinini as above given. From allied 

 genera they are separated by the absence of dorsal punctures and 

 by having three ,ir)inrs of the antennae smooth. In our species tlie 

 elytra are deeply striate, with the seventh interval earinate from 

 the humerus to a varying distance, and "with the eighth and ninth 

 striae well separated. The generic name refers to the impressions 

 7iear base of thorax. Their food has been shown by Dr. Forbes to 

 be wholly of insect origia. thus proving their beneficial habits. They 

 I'ceur beneath logs and stones, usually in high. dry. open woods. 

 Seventeen species are known from the ITnited States. Of these 

 nine have been taken in Indiana, while another perhaps occurs. 

 For literature see : 



Horn. — ■Synoptic Table,"' in BuU. Brook. Ent. Soc.. Ill, 

 15S0. 51. 



WicklMm. — "Coleoptera of Northeastern America," in Joum. 

 X. T. Entom. Soc. FT. l-9e;. 44. 



KEV TO I>T)IAXA SPECIES OF D1C.ELUS. 



II. Elytral intervals very irregular, interrupted by large puui-niies. 



179. SCULPTIUS. 



'la. Elytral intervals regular, not iuterrupted. 



Ii. Thorax distiuitly uarrowev at apex than base. 

 c. Elyti'a not uniform black; l(u:.Th 1' — 2." mm. 



(I. Elytra viulaeei u^ or purjilish. Isd. piRPi K.\Ti .^. 



ilii. Elytra brilliant brassy or cuprecius. spixxDim s 



cc. Elytra blact. 



e. Intervals of elytra alternately broader and more convex; hu- 

 meral carina very long. ISl. fukvts. 

 ' e. Intervals of elytra e<iual. 



/. Two bristle-hearing punctures im margin of thorax near mid- 

 dle: form moderately eloiiirate, the elytral intervals eiinal. 



182. ELOXGATl s. 



