948 



FAMILY L.- — SCARAB^ID^. 



LeConle. — "Short Studies of N. Amer. Coleoptera, " in Trans. 



Amer. Ent. Soc., VIII, 1880. A synopsis of the genus 



Hoplia is given on pages 191-194. 

 Horn. — 4 'Revision of the U. S. Species of Ochod-aeus and other 



Genera of Scarabagidae," in Trans. Amer. Ent. Soc., V, 1876. 



The genera Macrodactylus and Dichelonycha are treated on 



pages 188-192. 



Horn. — "Revision of the Species of Lachnosterna of America 

 North of Mexico," in Trans. Amer. Ent. Soc, XIV, 1887, 

 209-296. 



Smith, John B. — "Notes on Lachnosterna fusca," in Insect Life, 

 I, 1888, 180-185. 



Smith, John B. — "Some New Species of Lachnosterna," in Ent. 

 Amer., V, 1889, 93-99. 



Smith, John B. — "Notes on the Species of Lachnosterna of Tem- 

 perate North America with Descriptions of New Species," in 

 Proc, IT. S. Nat. Mus., XI, 1888, 481-525, Pis. XLVIII-LX. 



Fall, II . C. — "Notes on Dichelonycha and Cantharis with De- 

 scriptions of new Species in other Genera," in Trans. Amer. 

 Ent. Soc, XXVII, 277-292. 



Fall, II. C. — "Revision of the Species of Diplotaxis of the 

 United States," in Trans. Amer. Ent., XXXV, 1909, 1-97. 



KEY TO INDIANA GENERA OF MET .OI.ON TTI IX M. 



a. Middle and hind tibiae with only one spur, this sometimes obsolete ; 

 tarsi without setse-bearing process between the claws ; hind tarsi with 

 a single claw; body scaly. XVIII. Hoplia. 



aa. Middle and hind tibiae with two spurs ; all tarsi with two equal claws 

 and a distinct setae-bearing process between them. 

 T). Form elongate, slender ; colors metallic green or bronzed (at least in 

 part) or dull yellow. 



c. Elytra pubescent, not densely scaly ; claws chelate, i. e., capable 



of being folded along the last joint of the tarsi. 



XIX. Dichelonycha. 



cc. Elytra densely covered with elongate yellowish scales ; tarsal claws 

 not chelate. XX. Macrodactylus. 



hh. Form robust, heavy; color brownish, sometimes iridescent. 



d. Ventral segments five ; elytra either uniformly and rather finely 



punctured, or with punctured stria?. XXI. Diplotaxis. 



dd. Ventral segments six. 



e. Elytra with rather indistinct but regular sulci or grooves on the 

 disk; ventral segments free; size small, not over 10 mm. 



XXTI. Serica. 



ee. Elytra without striae or grooves over the great portion of the 

 disk; ventral segments connate; size larger, 11.5 or more mm. 



XXIII. Lachnosterna. 



