BEETLE GENUS ONTHOPHAGUS HOWDEN, CARTWRIGHT 73 



Onihophagus crihricollis Horn, 1881, p. 7G (new synonymy). — Henshaw, 1885, 

 p. 87.— Blatchley, 1910, p. 920.— Schaeffer, 1914, p. 297.— Leng, 1920, 

 p. 249. — Boucomont and Gillet, 1927, p. 205. — Leonard, 1928, p. 418. — 

 Sim, 1930, p. 141.— Boucomont, 1932, p. 313.— Cartwight, 1934, p. 238.— 

 Brimley, 1938, p. 199. 



Male majors. — Length 4.2 to 4.8 mm., width 2.4 mm. to 2.7 mm. 

 Head and pronotum shining, dark, iridescent cupreous to green; 

 elytra dully shining, black with cupreous or green cast, Clypeus 

 abruptly reflexed anteriorly, margin broadly emarginate anteriorly, 

 sharply angulate on each side of the emargination, often appearing 

 bidentate; lateral margins obtusely arcuate, often forming a nearly 

 straight edge mth the margin of the gena, which curves inward 

 rather abruptly near the eyes; disc with scattered, coarse punctures 

 which are larger laterally, central portions of clypeus and frons forming 

 a low convexity, clypeal carina usually obsolete, occasionally indicated 

 by two small, transverse tubercles, one on either side of the median 

 line. Frons coarsely, often setigerously punctate; carina of vertex 

 obsolete, the surface of the vertex nearly impunctate, smooth and 

 shining; a few scattered punctures near the eyes; genae heavily 

 punctate. 



Pronotum completely margined, the anterior angles acute and 

 sharply rounded; lateral margins sharply arcuate at the middle, nearly 

 straight before and behind, only moderately convex with a small 

 rounded conical projection basally no wider than the clypeal emargi- 

 nation, scarcely extending over the pronotal margm; disc of pronotum 

 covered with large, conspicuous, setigerous punctures which are seldom 

 separated by more than 2 diameters, those near the anterior angles 

 and pronotal projection having small tubercles overhanging their 

 forward margins. Elytra with shallowly punctate striae ; the intervals, 

 except for the sutural one, generally biseriately tuberculate; at the 

 base of each tubercle a minute puncture bearing a conspicuous, whitish 

 seta; surface of the intervals between the tubercles shining, very 

 finely alutaceous. 



Pygidium with rather evenly distributed, large, shallow punctures 

 bearing long, whitish setae; the impunctate areas smooth, shining, 

 cupreous green. Ventral surfaces smooth and shining with iridescent 

 reflections. Metasternum with coarse, setigerous punctures similar 

 to those on the pygidium; the punctures small medially; the median 

 line either absent or impressed in the posterior half of the metasternum. 

 Abdominal segments with a basal row of setigerous punctures, last 

 segment emarginate to receive the pygidium. Legs with all the 

 femora coarsely punctate and longer than in the females, the fore- 

 femora extending beyond the lateral pronotal margin ; foretibia slightly 

 longer than the femur, thin and bent inwardly in the anterior half. 



