THE WHIELIGIG BEETLES. 241 



bronzed and finely reticulate ; labrum ronnded in front and eiliate ; 

 scutellum invisible ; elytra with nine slightly impressed striae which 

 are sometimes very indistinct. Front tarsi of males moderately 

 dilated and densely clothed beneath with papillas, forming an elon- 

 gate, narrow brush. Four species are known from Indiana, while 

 another may occur. 



KEY TO INDIANA SPECIES OF DINEUTES. 



a. Sides of thorax aud elj'tra with a bronzed submarginal stripe; length 

 12-15.5 mm. vittatus. 



fia. Sides without submarginal stripe; length not over 11 mm. 



6. Under surface uniform brownie-yellow. 474. discoloe. 



66. Under surface black or bronzed. 



c. Sutural angles of elytra rounded in both sexes ; femora of male 

 toothed. 475. bmaeginatus. 



oc. Sutural angles distinct in female ; femora of male not toothed. 

 d. Sutural angles of both sexes produced baclvward ; tips of female 

 elytra feebly separated. 476. assimilis. 



<hl. Sutural angles of elytra of male rounded ; those of female pro- 

 duced backward with the tips str(]Ugly separated. 



477. HORNII. 



D. viflaiiis ^Vube has a range which probably includes southern 

 Indiana, lint it has not yet been taken in the State. 



474 (1534). DiNEUTES discolor Aube, Spec. Gen., VI, 1838, 784. 

 Oblong-oval, moderately convex, narrowed in front. Above black- 

 bronzed, shining; under surface brownish-yellow to straw color. Elytra 

 with side margins at outer apical angle and tips slightly sinuate, the 

 sutural angles weakly produced ; femora of male with a triangular tooth. 

 Length 11.5-13 mm. 



Steuben, Kosciusko, Putnam and Martin counties; very common 

 in East Pork of White River. June 26-Septeinber 3. Easily 

 known by the narrower front half of body and pale under surfaces 



475 (1538). DiNEUTES emabginatis Sa.y, Trans. Ainer. Phil. Soc, II, isi::!, 



108 ; ibid. II, 519. 

 Rather broadly oval, moderately convex. Above black or blackisli- 

 bronzed, not very shining; beneath black, very shining, slightly bronzed; 

 middle and hind legs, narrow margin and tip of abdomen, paler. Side 

 margins of elytra in male, not in female, slightly sinuate near tips ; sutural 

 angles broadly rounded. Length 10-11 mm. 



Pond near University farm, east of Mitchell, Lawrence County; 

 scarce. August 7. Probably throughout the southern half of 

 State. 



