BEETLE GENTJS ONTHOPHAGUS — HOWDEN, CARTWRIGHT 109 



frontal carina indicated only laterally by a sharp erect horn directed 

 outwardly over each eye; between the horns a median smooth non- 

 tuberciilate, often finely alutaceous and slightly concave area; genae 

 moderately promment, their laterally arcuate margins extending 

 slightly beyond the lateral clypeal margins. 



Pronotum moderately convex, margined anteriorly and laterally; 

 anterior angles smooth, shining, deeply concave, the fossae extending 

 upward each side to the base of pronotal protuberance which is 

 very similar to that of 0. medorensis and 0. blatchelyi and to a mode- 

 rately developed pronotal process in 0. hecate; pronotal process broad, 

 slightly wider than the distance between the eyes and extending 

 forward slightly beyond the eyes, its anterior end flared, acutely 

 angled, and deeply emarginated between the hornlike angulations, 

 median edge unarmed. Viewed laterally the dorsal surface of the 

 pronotal protuberance appears almost flat with the tips of the angu- 

 lations thickened; disc of pronotum evenly tuberculate, the tubercles 

 separated by a distance 2 to 3 times their own diameter, posterior 

 edge of each tubercle with a long reddish-yellow seta, the pronotum 

 therefore having a noticeably hairy appearance. Elytral striae 

 shallowly but distinctly punctate, mtervals flat and alutaceous 

 between small shiny tubercles; except on the sutural interval, the 

 tubercles usually arranged in very irregular rows, the interval adjacent 

 to the sutural interval having three or four rows, the next interval 

 two or three, and subsequent intervals usually three rows, each tubercle 

 with a long yellowish seta posteriorly at its base. 



Pygidium flat basally, slightly convex over apical half, vaguely 

 alutaceous over basal third, smooth and shiny apically, with coarse 

 punctures most pronounced on apical half, all punctures bearing long 

 yellowish setae. Ventral surfaces generally black with traces of green- 

 ish or bluish iridescence, stem of antennal club reddish brown, the 

 club grayish black. Anterior coxae rounded, similarly to medorensis, 

 not as transverse as hecate, their anterior surface appearing finely 

 rugose. Mesothorax and metathorox coarsely punctate, except along 

 median line of metathorax, each puncture bearing a long, reddish- 

 yellow seta; surface shiny between the punctures, usually not 

 alutaceous as in medorensis; metasternum forming a slight ridge 

 between the middle coxae as in medorensis; abdomen with a regular 

 line of very small, setigerous punctures running completely across the 

 base of each abdominal segment except the first, last segment slightly 

 emarginate as is typical in the males of the genus. Forelegs elongate, 

 the apical end of the forefemur extending slightly beyond the lateral 

 edge of the thorax; foretibia very long and slightly curved, with an 

 apical conical projection over the tibial spine, the spine thickened and 



