938 K.UIILY L. SCAKAB.KllhK. 



XIV. Oi)ONT.-Ers Meg. 1S21. (Or., "a tooth.") 



Eyes completely divided; middle coxa' contiguous without a 

 tooth-like ehnatioii on the process between them. The males have a 

 long, slender, curved horn arising from the clypeus. Two of the 

 three known North American species have been taken hi the State. 



1770 (5592). OIHKVI'.KIS FILICOBNIS Say, Jourii. Phil. Acatl. Nat. Sci., Ill, 



1823, 211 ; ibid. II, 136. 



P. madly oval, convex. Uniform pale chestnut-brown, male: brownish- 

 yellow, female. Clypeus with a slender, curved, movable horn, longer 

 than the greatest width of head. Thorax of male with a deep median 

 groove on basal two-thirds, a broad pit each side, bordered externally by a 

 sharp longitudinal ridge, the groove and pits sparsely and coarsely punc- 

 tured; female with median groove less wide and deep, the pits obsolete; 

 the sides more densely and coarsely punctured than in male. Elytra each 

 with 11 or 12 shallowly impressed, coarsely punctured striae. Length (V- 

 8.5 mm. 



Frequent about Hessville, Lake County; one specimen from 

 Vigo County. May 9-.July 16. Occurs beneath logs and other 

 cover in sandy localities. 



1771 (5593). ODONTJEUS CORNIGERUS Melsh., Proc. Phil. Acad. Nat. Sci., II, 



1844, 138. 



Resembles filirornis but larger and more robust. Horn of elypeus of 

 male stouter and not movable. Thorax of male with median groove shorter 

 and wider, the pits on each side very large, reaching nearly to base, their 

 outer margin not limited by a sharp ridge ; a stout reflexed horn in front 

 of each pit. Elytra as in filicornis. Length 10 mm. 



'One male from Vigo County. September 28. Taken from be- 

 neath a partly buried log in upland, sandy woods. Female not 

 seen and, as far as I can ascertain, not described. 



XV. GEOTRUPES Fab. 1798. (Gr., "the earth + bore.") 



Medium-sized, broadly oval species, varying in color from black 

 to dark metallic green or purple. They have the antennal club 

 small, witli the plates of equal thickness. Some of them are very 

 common species, occurring under cow dung, in pastures, often bur- 

 rowing into the ground beneath. Of the 11 species known from 

 North America, three have been taken in the State, while another 

 doubtless occurs. 



KEY TO INDIANA SPECIES OE GEOTRVPES. 



(i. P>ody above shining, more or less metallic; elytra distinctly striate. 

 1>. Strife of elytra without punctures; head without tubercles; basal 

 marginal line of thorax absent. SEMIOPACUS. 



