THE SHOHT-WIXGED SOA VENGEI! BEETLES. 401 



f'osi y, Thos. L. — "Revision of the Slenini of America North of 

 :\rexico," 3884, pp. 1-206. (Published privately.) 



Two genera comprise the subfamily, both of which are repre- 

 sented in Indiana. 



KEY TO GENERA OF STENI^^E. 



a. Paragl(!ss;i uot narrowed at base; cheeks promineut; elytra each with 

 a large reddish-yellow sjiot. XLI. Dia?sOu.s. 



iKi. Parnslossa strongly narrowed at base: cheeks very small, usually In- 

 visible from above. XLII. Stexus. 



XLI. DiAxors Leach. 1819. (Gr., "to meditate.") 



Rather robust species having the eyes smaller and more Avidely 

 separated than in Stnius; antenna- long and slender; abdomen 

 strongly margined at the sides. Two species are known from the 

 United 8!tat(-s. one of which has been taken in the State, while the 

 other. D. curuh scciis Gyll, has been taken about the Great Lakes 

 and probably occurs in northern Indiana. 



KEY TO SPECIES OE DIANOVS. 



a. El.vtra suarcel.v limber than wide; punctuation cuarsc and sparse. 



777. ^JITIDCLUS. 



an. Klytra distinctly longer than wide ; punctuation fine and dense. 



CCEKULESCEXS. 



777 (2:!01).. DiANOUs xitidulus Lee. Troc. Bost.' Sue Nat. Hist, XVI. 

 1S74. 272. 

 Black or dark steel blue; elytra each with a large rounded pale spot 

 behind the middle ; pubescence very fine and s] arse, visible only on head 

 and abdomen. Head with two wide, shallow ijrooves between the eyes. 

 separated by a convex ridge; finely and rather closely punctured. An- 

 temwe reaching middle of thorax, third joint one-half longer than fourth. 

 Thorax subcylindrieal. widest at middle, narrower at base than apex, with- 

 out median imi)ressinu : surface rather roarsel.v. not closely punctate. Ely- 

 tra slightly narrower than head, coarsely, rather sparsely and evenly punc- 

 tate, the punctures separated by twice their own width. Abdomen finely 

 and sparsely punctate. I>ength 4.5 mm. 



Flo,^■d ('(Uinty; scarce. Octobei' 4-C>ctober 9. Taken beneath 

 stones im the bank of the Ohio River. 



XLII. Stents Lat. ITItn. ((Jr., "narrow."") 



A very large geiuis of chisel.v related forms which for conven- 

 ience are separated into the foUowuig >;roiips : 



