24 



PROCEEDINGS OF THE NATIONAL MUSEUM vol. 114 



Figure 3. Distribution of species of Onthophagus: 



•jc hatesi, new species 

 O oklahomensis Brown 



O suhopacus Robinson 



frontal carina sometimes breaks downward suddenly, rather angu- 

 larly at the ends, the eyes are slightly shorter and wider, and in hatesi 

 the pygidium usually shows a mi ore or less impunctate, slightly ele- 

 vated median line. If the specimen is turned in reflected light, the 

 even curvature of the pygidium is seen to be slightly broken dorso- 

 ventrally by the midline. Alan}^ of the male minors show traces of 

 the clypeal carina. 



The Brownsville, Tex., specimens were collected in shallow burrows 

 under fresh horse droppings in the area known as the "palm jungle" 

 on the McCormick ranch 7 miles east-southeast of the city. 



Onthophagus incensus Say 

 Plate 1, Figures 1-3 



Onthophagus incensus Say, 1835, p. 173. — Lacordaire, 1856, p. 109. — Harold,1880, 

 p. 30. — Bates, 1887, p. 66. — Boucomont and Gillet, 1927, p. 206. — Boucomont, 

 1932, p. 308. 



Onthophagus curvicornis Latreille var. incensus (Say), Boucomont, 1932, p. 308. 



Male majors. — Length 7 to 10 mm., width 4 to 6 mm. Black, 

 shining, som.etimes with greenish or coppery lustre at base of head 

 and anteriorly on the pronotum. Anterior margin of clypeus rather 

 widely, shallowly emarginate and sharply reflexed; lateral margins 

 only feebly or not at all reflexed. Head without carinae, slightly 

 wider than long, the genae prominent but obtusely rounded; disc 



