THE CLICK BEETLES. 739 



XXX. AGRIOTKS Esdi. 1829. (Gr.. " wild.") 



Moderate sixed oblong species, having the prosternuni lobed in 

 front, its sutures double; antenna- slender, se;ireely senate, the 

 tirst joint a little longer than usual; hind eoxal plates but slightly 

 broader on the inner side, and with a large tooth above the inser- 

 tion of the thighs. For a synoptical table of the North American 

 species with notes, see 



LcContc. "Short Studies of North American Coleoptera 

 Agriotes," in Trans. Amer. Ent. Soc., XII, 1884. 15-19. 



Six species have been taken in Indiana, while another probably 

 occurs in the northern counties. 



KEY TO INDIANA SPECIES OF AGRIOTES. 



(i. Hind coxa! plates very gradually dilated from without to inner side 



and not twice broader at inner third than at outer end. 

 1>. Form robust ; mandibles thick, the tips broad, chisel-shaped ; thorax 

 very convex, coarsely and densely punctate. 1395. MANCI s. 



lib. Form more slender; mandibles much more slender, tips snbacute. 

 c. Thorax coarsely punctured in front, very finely and densely punc- 

 tured behind the middle. 139G. STABIIJS. 

 co. Thorax similarly, usually coarsely, punctured over the entire sur- 

 face. 

 <1. Antenna? with joints two and three each distinctly shorter than 



fourth; side margin of thorax distinct in its entire length. 

 e. Hind angles of thorax not visibly carinate; color pale brown 

 with dense grayish pubescence; smaller, 7-S mm. 



1397. INSANTJS. 



cc. Hind angles of thorax very distinctly carinate; colnr variable; 

 larger. 9-12 mm. FUCOSUS. 



(Id. Antenna' with jnints two and three each equal in length to, and 

 scarcely narrower than, joint four; side margin of thorax in- 

 distinct in the middle of its length and very much detiexed in 

 front; color dark fuscous. 139S. PUBESCENS. 



<K/. Hind coxal plates rather suddenly dilated within, more than twice as 



broad at inner third than at outer end. 



f. Joints two and three of antenna? each shorter than fourth, the third 

 shorter than second; thorax distinctly longer than wide. 



1399. OBLONGICOLIIS. 



ff. Antenure with joints two, three and four very nearly of equal length : 

 thorax scarcely longer than wide, coarsely and deeply punctate. 



1400. AVULSUS 



