BEETLE GENUS ONTHOPHAGUS — ^HOWDEN, CARTWRIGHT 43 



ular rows of setigerous tubercles; sm-face of elytral intervals between 

 the tubercles alutaceous, dully shining. Pygidium largely smooth and 

 shiny with numerous setigerous punctures. Ventral surfaces of tho- 

 rax laterally bearing large, shallow, setigerous punctures; medially the 

 punctures obsolete, setae shorter, with smooth midline of metasternum 

 lacking both coarse punctm-es and setae. Abdominal segments finely 

 alutaceous, each segment having an irregular basal row of setigerous 

 punctures, last segment slightly emarginate medially. Forelegs not 

 greatly elongated, tip of the forefemora barely extending to lateral 

 pronotal margin; fore tibia quadridentate, slightly longer and consid- 

 erably more slender than in females, and with an apical conical pro- 

 jection which is lacking in females; outer margin of the foretibia 

 between and above the teeth serrate or finely denticulate; mesothoracic 

 and metathoracic legs similar to those of females; femora of all legs 

 with fairly numerous coarse setigerous punctm-es. 



Male minors. — Length 4.5 to 5.8 mm., width 3 to 4 mm. Differ- 

 ing from male majors in following respects: Dorsal color fully as vari- 

 able but dark specimens usually with less cupreous u'idescence. Head 

 with clypeus not prolonged anteriorly, usually evenly rounded, 

 occasionally broadly, shallowly emarginate; surfaces of clypeus, frons, 

 and genae generally as described in male majors. Carina of vertex 

 often obsolete except laterally where the horns may be reduced to 

 two small sharp humps or are intermediate in length to the male 

 majors; in very small specimens, nearly the entire carina may be 

 indicated as a low ridge, indistinct only at the middle, with no indica- 

 tion of lateral horns. 



Pronotum weakly convex, anterior angles acute with lateral mar- 

 gins generally evenly arcuate, protuberance often indicated by a slight 

 swelling delimited laterally by two small rounded or sharp humps, 

 with small concavities beyond them; pronotal punctures as variable 

 as in male majors, but usually more closely grouped. Elytra with the 

 same variable color patterns, tubercles on the intervals usually quite 

 pronounced, as is the alutaceous sculpture. Pygidium often more 

 alutaceous in upper half, setigerous punctures large and close; ventral 

 surfaces generally more heavily punctate. Foretibia shorter, wider, 

 and with only a faint indication of the apical conical projection noted 

 in male majors. 



Females. — Length 4.3 to 7.2 mm., width 2.5 to 4 mm. Differing 

 from male majors in the following respects : Head with clypeus round- 

 ed, the anterior edge often truncate or verj^ slightly emarginate for a 

 short distance, the margin reflexed anteriorl}'^, less so laterally; disc 

 coarsely transversely rugose; clypeal carina low, complete, highest 

 medially, laterally often only a raised line by the genae ; frons and genae 

 with scattered, coarse, setigerous punctures usually separated by a 



