BEETLE GENUS ONTHOPHAGUS — HOWDEN, CARTWRIGHT 17 



the tibial teeth of the foretibia, by the high carina of the vertex which 

 ends over each eye in a long horn in both sexes, by the smooth, finely 

 punctate basal portion of the pronotum, b}'- the minute punctures 

 of the elytral intervals, and by the dark brown to piceous overall color. 

 Though coproides appears to be widely distributed in the higher 

 mountains of Arizona, New Mexico, and Colorado, it has also been 

 taken in Nebraska at a lower elevation. The scarcity of spec- 

 imens in collections indicates a restricted habitat. Quite likely 



Figure 1. Distribution of species of Onthophagus: 



X coproides Horn 

 # striatuliis striatulus (Palisot de 

 Beauvois) 



O striatulus floridamis Blatchley 

 ■^ landolti texanus Schaeffer 



the species occurs in some rodent nest or animal burrow. It is 

 one of the few species about which little or nothing is known. 



Among closely allied Mexican species, a female cotype of 0. hippo- 

 potamus Harold loaned by the British Museum differs in having 

 (1) much denser pronotal punctation which is only very slightly 

 finer even in the basal areas, (2) the pronotal protuberance rounded, 

 not angulate in front as in coproides, and (3) the frontal carina on 

 the head straight and evenly elevated its entire length, not angulate 

 forward medially and not elevated into horns at the ends. 



633411 — 62- 



