THE MINUTE BROWN SCAVENGER BEETLES. 657 



face without cariiup and disk with a distinct rounded or transverse 

 fovea before the base; elytra each with eight rows of punctures 

 which are moderate! y large toward the base but become finer api- 

 cally. The males have the first joint of the front tarsi distinctly 

 dilated. Of the 26 species of the genus listed from the United 

 States, the following have a range which may include Indiana : 



KEY TO INDIANA SPECIES OF COBTICARIA. 



a. Pubescence more conspicuous, the hairs of elytral intervals longer, more 



erect and bristling than those of the striae; middle coxae separated 



by less than one-third their own diameters ; form moderately convex. 



b. Punctures of strire and intervals not very different in size, somewhat 



confused; front and middle tibiae of male not bent at tip; length 



2.3-3 mm. PUBESCENS. 



bb. Punctures of elytral intervals distinctly finer than those of striae, 



not confused ; front and middle tibiae of male bent and mucronate 



on the inner side at tip. 



c. First joint of antennal club not distinctly longer than wide; tho- 

 rax cordate; color pale brownish-yellow; length 1.7-2 mm. 



FULVA. 



cc. First, joint of club distinctly elongate ; thorax feebly cordate ; color 

 piceous brown, the elytra often paler ; length 2.1-2.3 mm. 



VARICOLOR. 



aa. Pubescence shorter, more appressed and uniform ; middle coxae sepa- 

 rated by nearly one-half their own diameters ; form often depressed. 

 cl. Metasternuin subequal to or shorter than first ventral ; joints of an- 

 tenual club all longer than wide; thorax without fovea; length 

 2.3-2.6 mm. VAIJDA. 



dd. Metasternnm distinctly longer than first ventral. 



e. Size larger, 2-2.5 mm. ; sculpture of both upper and lower surface 

 coarser and closer ; margin of thorax distinctly serrate. 



1260. SERRATA. 

 ee. Size smaller, always less than 2 mm. 



f. Fifth ventral segment not longer than fourth, the sixth usually 

 distinctly visible; last three joints of antenual funicle trans- 

 verse. BREVICORNIS. 

 //. Fifth ventral at least one-half longer than fourth, the sixth not 



visible; outer joints of funicle not evidently transverse. 

 g. Color yellowish to dull reddish-yellow; elytral intervals with 

 a single regular row of punctures. 1261. ELONGATA. 



gg. Color reddish-brown ; elytral intervals more or less irregularly 

 punctulate; form less parallel and less depressed. 



1262. FERRUGINEA. 



C. pubescens Gyll., fuscous to fuscous-yellow in hue, is known 

 from Michigan and northern Illinois; C. fulva Com., is recorded 

 from Kentucky and Michigan ; ( 1 . raricolor Fall was described from 

 Michigan, Dakota and westward; while C. mil id a Fall has been 

 taken in northern Illinois. 



