THE CLICK BEETLES. 



739 



XXX. Agriotes Escii. 1829. ((Jr., "wild.") 



Moderate sized oblong species, having the presternum lobed.in 

 front, its sutures double ; antennas slender, scarcely serrate, the 

 first joint a little longer than usual; hind coxal 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 



LeConie. — " Short Studies of Xorth 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 IXMAXA SPECIES OF AGEIOTES. 



a. Hind coxal plates very gradually dilated from without to inner side 

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

 b. Form robust: mandibles thick, the tips broad, chisel-shaped: thorax 

 very convex, coarsely and densely punctate. 1395. maxcus. 



bb. Form more slender : mandibles much more slender, tips subacute. 

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

 tured behind the middle. 1396. stabilis. 

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

 face. 



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

 fourth : side margin of thorax distinct in its entire length, 

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

 with dense grayish pubescence : smaller. 7-8 mm. 



1397. ixsaxus. 



ec. Hind angles of thorax very distinctly carinate: color variable; 

 larger. 9-12 mm. fucosf/s. 

 dd. Antenna? with joints two and three each eo.ua 1 in length to. and 

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

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

 front: color dark fuscous. . 139S. pubescexs. 



as. 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. 0BLOXGIC0LLIS. 



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

 thorax scarcely longer thau wide, coarsely and deeply punctate. 



3400. avuxsus 



