THE CLICK BEETLES. 



771 



neath with a dense brush of hairs. The antenna? are serrate with 

 third joint usually a little longer than fourth and the hind angles 

 of thorax are prominent and strongly carinate. Four of the seven 

 species known from the United States have been taken in Indiana. 



KEY TO INDIANA SPECIES OF MEIANACTES. 



a. Striae on disk of elytra not at all impressed, their punctures very fine 

 and separated one from another by more than their own diameters : 

 intervals flat, very minutely and indistinctly punctulate. 



1470. piceus. 



aa. Stria? of elytra more or less impressed, the punctures more distinct and 

 not separated by more than their own diameters ; intervals distinctly 

 punctulate. 



fc. Elytral stria? deeply impressed, coarsely punctate ; intervals strongly 

 convex. 1471. mobio. 



Elytral stria? feebly impressed, finely punctured: intervals nearly 

 flat. 



c. Thorax rather sparsely and finely punctured. 



1472. prxcncoms. 



cc. Thorax very densely and coarsely punctured. 

 1470 (4514). Melanactes picetjs DeGeer. Ins.. IV. l" 



Elongate, subdepressed. 

 Black, strongly shining ; 

 antenna? and tarsi piceous. 

 Thorax a little longer than 

 broad, slightly narrowed in 

 front and at base of hind 

 angles ; sides feebly curved, 

 strongly margined: disk 

 finely, sparsely and sb al- 

 low ly punctate, more dense- 

 ly at sides. Elytra with 

 sides parallel to middle, 

 tbence feebly narrowed 

 into a rounded apex. 

 Length 23-32 mm. 



Throughout the 

 State ; scarce in the 

 northern counties ; fre- 

 quent in the southern 

 part. May lg-July 23. 

 Occurs beneath stones 

 and rubbish in dry lo- 

 calities. (Fig. 292.) 

 The supposed larva . 

 when full grown, is 



1473. 

 102. 



C 0>~SOB5. 



Fig. 292. Melanadts pictus DeGL- 

 as seen by night; c, beetle; d. enlarged head and port 

 larged leg of same. (After Riley.) 



