THE GKOTHSTD BEETX ES. 



1 63 



KEY TO INDTANA GENERA OF CHLiENIINI. 



a. Punctures of eighth stria of elytra distant from the margin, the ninth 

 stria very distinct; eyes regular in outline, not truncate behind ; color 

 mostly green or blue-black. 

 h. Mentuni with a distinct lobe each side; length 8 or more mm. 



c. Mentuni toothed in the center of the notch. LV. Chl.exiis. 



cc. Mentuni not toothed. LVI. Axomoglossis. 



hh. Mentuni without lobes, truncate in front; length 9-9.5 mm. 



LVII. Beachylobus. 



an. Eighth stria of elytra very close to the margin, the ninth indistinct; 

 eyes truncate behind ; color black or piceous. 

 (h All the tarsi pubescent beneath; clypeus with a* bristle-bearing punc- 

 ture each side; labrum with six setfe ; length 9.5-10 mm. 



LVIII. Lachnockepis. 



<1<1. Hind tarsi not pubescent beneath. 



c. Front tarsi of males with four joints dilated, the first three spongy 

 beneath ; clypeus without bristle-bearing punctures ; labrum with 

 six seta? : length 5-6 mm. . LIX. Anatkichis. 



ee. Front tarsi of male with three joints dilated and spongy; second 

 joint of labial palpi without seta? in front: thorax as wide at 

 base as elytra; length 7.5 or more mm. FX. Oodes. 



LV. Chlmius Bon. 1813. (Gr., "a cloak or mantle.") 



This genus is composed of greenish- or bluish-black oblong- 

 beetles of medium or large size. They are mostly finely pubescent, 

 and when handled give off an odor like that of morocco leather. In 

 a number of species the base of thorax is as wide as that of elytra. 

 They live beneath stones, logs. etc.. the majority of the species being 

 found in damp localities, Avhere they feed largely upon other in- 

 sects. In 23 individuals dissected by Dr. Forbes. 83 per cent, of 

 the stomach content was found to be of animal origin. Of this 65 

 per cent, was of insects, chiefly cutworms, canker-worms and other 

 injurious forms, so that the genus ranks high among the beneficial 

 Carabidae. 



About 43 species of Chlamius are known from the United States. 

 Of these. 16 have been taken in Indiana, while two others perhaps 

 occur. The principal papers treating of the genus are as follows : 

 LeConte.— 'Analytical Table of the Species of Chiasmus in the 

 United States." in Proc. Phil. Acad. Xat. Sci.. Till. 1856. 25. 

 Horn. — "Revision of the Species of Chhenius in the United 



States." m Trans. Amer. But Soc. Y. 1876. 253. 

 Horn.— "Synoptic Table." in Bull. Brook. Ent. Soc. IV. 

 1882, 3. 



For convenience the Indiana species are first divided into two 

 groups and these in turn into species. 



