ONTHOPHAGUS. 5 



feeble punctured striae, interstices finely granulate. Female 

 with two transverse ridges (front one slightly bent) on 

 forehead, front of head very slightly eniarginate and front 

 of thorax with a small double prominence. L. 4 1. Not 

 common. 0. nutans, Fab. 



l). Elytra yellowish, more or less sprinkled with brown 

 or black. 



I, Thorax rather closely granulated. 



Head and thorax bronze-gi'een ; elytra reddish-yellow, 

 with greenish-brown markings. Clypeus slightly emargi- 

 nate in front ; sides of thorax evenly rounded ; elytra with 

 feeble punctured striae, interstices slightly convex, finely 

 and rather diffusely granulate, almost in rows. Male with 

 vertex of head prolonged into a plate, ending in a thin 

 upright horn ; thorax sloped in front, emarginate in middle. 

 Female with two transverse ridges on forehead, the front 

 one slightly bent, the hinder one with a prominence at each 

 end ; front of thorax with a small double prominence. L. 

 3|— 5 1. Bather common. 0. vacca, Lin. 



II. Thorax closely punctured, not granulate. 



1. Sides of thorax slightly sinuate in front, anterior 

 angles acute. 

 Male with vertex of head prolonged into a plate, nar- 

 rowing into a horn, bent forward. Female with two trans- 

 verse ridges on forehead, the front one slightly bent. 



A A. Elytra dull reddish -yellow, indistinctly 

 sprinkled with brown or brownish-black. 



Body broader and more convex than 0. fradicornis, 

 rather shiny. Head and thorax coppery-reddish, sometimes 

 greenish ; antennae red, with blackish-club. Head oblong, 

 slightly eniarginate in front ; thorax very closely punctured ; 

 elytra with feeble punctured striae, interstices diffusely 

 punctured. Female with a slight prominence in front of 

 thorax. L. 3 — 4 1. Moderately common. 



0. CO en oh it a, Herbst. 



H S, Eljd^ra yellow, sprinkled with black. 



Eather dull. Head and thorax dark bronze ; antennae 

 brown, with black club. Head oblong, slightly emarginate 

 in front ; thorax closely punctured ; elytra with feeble 

 punctured striae, interstices punctured almost in two rows. 



