14 



PROCEEDINGS OF THE NATIONAL MUSEUM 



34(33). Surface of pronotum and (or) elytra finely alutaceous 35 



Surface of pronotum and elytra between tubercles smooth and shining; 

 in prairie dog burrows; Oklahoma, New Mexico. 



cynomysi Brown (p. 57) 



35(34). Uniformly brown or black; eyes flat and narrow, 6 to 7 facets wide; 



anterior pronotal angles sharply rounded, posterior angles more 



broadly rounded, 140° to 145° 36 



Pronotum greenish, elytra black; eyes noticeably convex, 10 facets 

 wide; anterior pronotal angles broadly rounded, posterior angles 

 more sharply rounded, 130°. Length 6.6 to 8.6 mm.; southern 



Arizona arnetti, new species (p. 98) 



36(35). Pronotum of male with flat projecting protuberance, its wide shallow, 

 usually angular emarginate anterior edge wider than base, and its 

 external angles rounded; females with carina of vertex distinctly 

 bent posteriorly at middle; female pronotal protuberance distinct, 

 sharply defined; western Texas to Arizona. 



browni, new species (p. 101) 

 Head of male with two upright diverging slender horns in front of the 

 high angulate anterior margin of pronotum; females with carina of 

 vertex nearly straight; thoracic protuberance of female very weak, 

 poorly defined; Texas, Colorado to Arizona . . velutinus Horn (p. 105) 

 37(33). Pronotum bright shiny green or bluish; elytra usually bicolored, green 

 with yellow base and apex; Pennsylvania to Florida and Louisiana. 



concinnus Laporte (p. 108) 

 Color feebly shining to dull uniform dark green, blue, or black, sometimes 



with brown spots at apex of elytra 38 



38(37). Elytral intervals triserially tuber culate; male without basal cephalic 



horns 39 



Elytral intervals biserially punctate-tuberculate; green, blue, or black; 

 male with short acute basal horn directed upward and outward behind 

 each eye; Kansas to Texas and Louisana. 



niedorensis Brown (p. 112) 

 39(38). Pronotal setae fine and long, length much greater than distance between 

 elongate oval tubercles; east of Rockies. 



hecate heoate (Panzer) (p. 115) 



Pronotal setae short, inconspicuous, scarcely longer than distance 



between small round tubercles; usually brown spots at apex of elytra; 



Florida to South Carolina .... hecate blatchleyi Brown (p. 120) 



Onthophagus coproides Horn 



Pirate 1, Figures 4 and 5 



Onthophagus coproides Horn, 1881, p. 75. — Henshaw, 1885, p. 87. — Schaeffer, 

 1914, p. 293.— Leng, 1920, p. 248.— Dawson, 1922, p. 178.— Boucomont 

 and Gillet, 1927, p. 205. — Boucomont, 1932, p. 297. 



Onthophagus cuboidalis Bates, 1887, p. 79. — Boucomont, 1932, p. 297 — Black- 

 welder, 1944, p. 211. 



Male majors. — Length 11.5 to 14.0 mm., width 7.1 to 7.3 mm. 

 Dorsally and ventrally brown to piceous, with legs same color. Cly- 

 peus transverse, somewhat quadrangular; lateral anterior angles 

 sharply bent and sometimes extending beyond the lateral margins of 

 the genae; clypeus gradually reflexed between the anterior angles; 



