THE CARRION BEETLES. 283 



KKY TO INDIANA SPECIES OF COLON. 



(/. Iliiul IVmor.i dl' male with u loug tooth on the inner margin near the 

 tip; hind tibi:i> cnrvcd. (Fig. 141, d.) iiubbakdi. 



(/(/. Hind femora of male without trace of tooth. 



/*. Hind angles of thorax distinct, sometimes acutely rectangular. 



c. r.ody broader in front, the elytra rather rapidly narrowing to apex. 



with feebly curved sides. 



(I. Surface subopaque, densely punctured; sutural stria entire; 



larger, 2.5-:5 mm. (Fig. 141, c.) magnicolle. 



(/(/. Surface rather shining; thorax si)arsely punctate; sutural stria 



evanescent near base; smaller, not over 1.." nun. 



554. PUSILLUM. 



cc. Body oblong-oval, not wider in front; elytra behind the humeri 

 usually wider than thorax, the latter with coarse, rather deep 

 punctures, with finer ones in the intervals. (Fig. 141, a and b.) 



THORACICUM 



bh. Hind angles of thorax obtuse or rounded. 



(I. Color piceous. legs reddish-brown ; middle tibite of male straight. 



ASPERATUM. 



cl(J. Color reddish-brown; middle tibial of male distinctly curved. 



555. OBLONGUM. 



C hiihhaydi Horn, piceous to reddisli-brown in hue and 2.5 mm. 

 in length, is known from Michigan and Ohio. C. mag>iicolle Mann., 

 piceous in color, occurs in ^Michigan and Pennsylvania. 



554 (1752). Colon pisillvm Horn, Trans. Amer. Ent. Soc. VIII. 1880, 



273. 

 Oblong-oval, evidently broader in front. Dull reddish-brown, finely 

 pubescent. Antennie pale, reaching middle of thorax, the last joint as long 

 as preceding and obtuse. Thorax one-half wider than long, sides feebly 

 curved and narrowing to front, disk finely not densely punctate. Elytra as 

 wide at base as thorax, surface rather densely and roughly punctate. 

 Length 2 mm. 



^Marion. La^\Tence and Posey counties ; scarce. April 21-lMay 

 16. Taken by sifting debris from about the base of trees. One 

 male has a minute tooth arising from the middle of hind femora 

 and is to be referred to C. puiiim Hoi-ii. whicli is ijrubably synony- 

 mous. 



C. thoracicmn Horn, reddish-brown, the elytra with a central 

 dark cloud, length 2.5 mm., was described from INIissouri and the 

 District of Columbia. C. asperatuni Horn, length 2 mm., is known 

 from [Michigan and Illinois. 



555 ( ). Colon oblongim sp. nov. 



Obljiig-oval. Dark reddish-brown, sparsely clothed witli fine yelli)wish 

 hairs. Head densely and finely punctate; antenute reaching middle of 

 thorax, the apical joint paler, not longer and slightly narrower than tenth. 



