BEETLE GENUS ONTHOPHAGUS — HOWDEN, CARTWRIGHT 89 



shallowly, basally depressed midline. Moderately coarse punctures, 

 setigerous laterally and across anterior declivity, where each seta is 

 preceded by a noticeable tubercle; coarse pronotal punctures every- 

 where quite evenly dispersed, separated by 1 to 2 diameters, a few 

 smaller punctures intermixed on disc. First three elytral striae 

 slightly wider than next four, with very distinct punctures crenating 

 the sides of the intervals; punctures of next four striae wider than 

 the striae, a little like widely spaced beads on a string; intervals flat, 

 alutaceous except outside humeri. Elytra black except for a mod- 

 erately large yellowish-brown humeral spot at base of intervals 6 and 

 7; two smaller discal spots on 5th interval roughly one-third and 

 two-thirds distance from base; similar coalescing spots at top of apical 

 declivity from 2nd to 6th intervals. 



Pygidium shining and smooth over convex apex, fuiely alutaceous 

 basaUy; everywhere with moderately deep, moderately coarse seti- 

 gerous punctures separated by 1 diameter or less. Underside, 

 including femora, with moderately coarse setigerous punctures 

 throughout, even at middle of metasternum; punctures of the abdom- 

 inal segments arranged in transverse basal rows. Legs dark brown, 

 anterior pair elongated, the femora extending beyond the thoracic 

 margins; tibae thin and narrow, longer than femora, arcuately bent 

 at outer third, and terminating with a tuft of long, yello^vish hairs 

 and tooth above the spur. Stem of antenna red-bro\vn, club fuscous. 



Male minors. — Minor males gradually approach the appearance 

 of females, the pronotal protuberance becoming smaller and smaller 

 almost to complete absence; the tubercles representing the frontal 

 carina becoming more prominent and closer together imtil they 

 approach the female carma in appearance, and the legs becoming 

 shorter until similar to those of the female; the clypeal carina, however, 

 not showing in any of the male minors available for study. 



Allotype. — Female, length 5.25 mm., width 3.0 mm. Similar to 

 holotype in color except that the yellowish-brown spots of the elytra 

 are less developed. The shoulder spot is about the same, but interval 

 5 has a small spot slightly posterior to the middle and another near 

 the top of the apical declivity, and interval 6 has a similar small spot 

 apically; no others are visible. The head is similar in outline but the 

 clypeal emargination is deeper and therefore has a more dentate 

 appearance; both carinae are strong and well developed, the clypeal 

 carina rather evenly elevated, only slightly higher medially, the 

 frontal carina shorter then the clypeal carina and notched at middle; 

 siu"face of clypeus coarsely punctate, slightly rugose transversely, 

 more finely so anteriorly; moderately coarse punctures extending over 

 genae and between and behind the carinae. Forelegs shorter, with 

 heavier tibiae, the tuft of hair and tooth above the spur lacking. 



