540 Coleopterological Notices, VII. 



the occiput, suberect, moderately long and distinct on the elytra. 

 Head behind the antennae f wider than long, the eyes well devel- 

 oped, convex and prominent ; sides behind them converging and 

 rounded to the neck ; surface strongl}^ tumid and elevated toward 

 the median line, especially toward base. Antennse f as long as 

 the bod}'^, rather stout, irregular, the club slender and feebly in- 

 crassate; basal joint scarcely \ longer than the second and only 

 slightly thicker, 2| times as long as wide ; second subcylindric, f 

 longer than wide, almost as long as the next two, which are 

 obconic, slightly longer and shorter than wide respectively ; fifth 

 dilated, wider than long, angulate at the external apical angle 

 and deeply excavated at the apex externally ; next three joints 

 subequal, not wider than the fourth, scarcely modified, wider than 

 long ; ninth very feebly obconic, not quite as long as the two pre- 

 ceding and scarcely more than ^ wider, fully ^ longer than wide ; 

 tenth obconic, as long as the two preceding and fully -^ thicker 

 than the ninth, nearly ^ longer than wide ; eleventh suboval, 

 thicker than the tenth but less than ^ longer, obliquely pointed 

 in apical half, gradually oblique externally toward base. Pro- 

 thorax evenly conic, as long as wide, apex | as wide as the base, 

 the latter equal in width to the head ; sides perfectly straight 

 throughout the entire length ; disk transversely and slightly 

 tumid before the basal margin toward the middle. Elytra about 

 as long as wide, f longer than the prothorax and a little more 

 than twice as wide, widest and more strongly rounded at the mid- 

 dle ; humeri rounded but distinctly exposed at base, not tumid 

 above; disk with a large shallow impression at the base of each, 

 evenly convex and not otherwise modified. Pygidium impunctate, 

 pubescent, equilatero-triangular, obtuse at apex. Legs rather 

 long, the femora gradually and moderately clavate ; basal joint of 

 the hind tarsi barely as long as the next two, the apex of the 

 tibiae with a fringe of spinules. Length 1.5 mm.; width 0.13 mm. 

 California (Los Angeles) and Arizona. Apparently not rare ; 

 the description is taken from the male, but the sixth ventral is 

 not much elongated and is very much shorter than the first ; in 

 the female the antennae are probably simple. The most impor- 

 tant structural characters of this species were overlooked by Dr. 

 Horn, and the fourth palpal joint is not subulate as stated by that 

 author, but the figure (1. c, plate) is quite accurate in outline. 



