BEETLE GENUS ONTHOPHAGUS — HOWDEN, CARTWRIGHT 59 



Figure 7. Distribution of species of Onthophagus: 



X 



concinnus Laporte 

 brozvni, new species 



O schaefferi, new species 

 D cynomysi Brown 



preference, being found only in the burrows of the common prairie dog, 

 Cynomys ludovicianus (Ord). 



Onthophagus subopacus Robinson 



Plate 5, Figures 40 and 41 



Onthophagus subopacus Robinson, 1940, p. 142. — Blackwelder and Blackwelder, 

 1948, p. 30. 



Onthophagus lecontei Schaeffer, 1914, p. 298 (not Harold, 1871, p. 115). — Leng, 

 1920, p. 249.— Boucomont, 1932, p. 327 (in part). — Blackwelder and Black- 

 welder, 1948, p. 30 



Male majors. — Length 4.4 to 5.7 mm., width 2.6 to 3.3 mm. 

 Black, finely alutaceous, opaque. Clypeus anteriorly sharply re- 

 flexed, distinctly emarginate; surface dully shining, very coarsely, 

 rugosely pimctate laterally with one or two punctures medially; 

 clypeal carina vague or completely lacking; surface of frons and vertex 

 finely alutaceous with scattered coarse punctm-es, each bearing a 

 long reddish seta. Gena delimited from the clypeus by a suture 

 extending from distinct marginal notch posteriorly to the lateral 

 base of the transverse carina of the vertex; laterally slightly flared, 

 then parallel-sided, and finally slightly arcuate inward to the eye. 

 Carina of the vertex may or may not be pronounced, but is distinctly 

 evident, of uniform height its entire length, and extends approximately 

 three-fifths of the distance between the eyes. Robinson stated this 



