948 FAMILY L. SCAl^VB.nUD.lv 



LeConte. — ''Short Studies of N. AniPi-. Coleoptera," in Trans. 



Ame'r. Ent. Soe., VllI, 1880. A synopsis of the genus 



Hoplia is given on pages 191-194. 

 Horn. — "Revision of the U. S. Species of Ochodteus and otlier 



Genera of Scarabfeidfe, " in Trans. Amer. Ent. Soe., 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 LachnosUrna fii.'ica," in Insect Life, 



I, 1888, 180-lsr). 

 i^inifli. Joint />. — "Somo New Species of Lach)iosterna," in Ent. 



Amei-., V, 1889, 93-99. 

 Sniilli, Joint B. — "Notes on tlie S[)e('ies of Laclinostcrna ol' Tem- 

 perate North America with Descriptions of New Species," iit 



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

 Fall, 77. 6'. — "Notes on Dichelonycha and Cantharis with De- 



sci-i])tions of new Species in other Genera," i)t Trans. Amer. 



Ent. Soc, XXVII. 277-292. 

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



United States," itt ^Prans. Amer. Ent.. XXXV, 1909. 1-97. 



KEY TO INDIANA OENKRA OK MEI.OLONrillN.T2. 



ii. Mi(l(Uo ;iii(l liiiid tiliiir with only one spur, this sometimes obsolete; 

 tarsi witliout set;e-liearing process between tlie el;iws; liind tarsi witli 

 a single claw ; body scaly. XVIII. Hoplia. 



aa. Middle and hind tibi.'e with two spurs; all tarsi with two equal claws 

 and a distinct setjp-bearing process between them. 

 1). 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. DU'ITIOLONVCHA. 



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

 not chelate. XX. Mackodactylus. 



hh. Form robust, heavy; color brownish, st>melinics iridescent. 



'/. Ventral segments five; elytra either uniformly and rather finely 

 punctured, or with punctured stria\ XXI. Diplotaxis. 



(hi. Ventral segments six. 



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

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



XXTI. Serica. 



cc. Elytra without stria? or grooves over the great portion of the 



disk; ventral segments connate; size larger, 11. .5 or more mm. 



XXIII. Lachnosterna. 



