242 H. C. FALL. 



appear, leaving the surface sparsely moderately coarsely punctate 

 and very shining, or on the other hand the coarser punctures may 

 become quite inconspicuous, though always present. I have placed 

 here several brown specimens which are possibly different, but at 

 present seem too feebly characterized to separate under a distinct 

 name. 



24. C. vestilum u. sp. — Eeddish brown or somewhat darker, color and 

 sculpture nearly concealed by the rather dense yellowish gray pubescence. 

 Form parallel, slightly less than three-fifths as wide as long, a little more 

 obtusely rounded behind, scarcely gibbous in profile. Coarser punctuation well 

 developed, slightly strongest at sides of pronotum. Metasternum punctate at 

 middle, the punctures very sparse or quite absent at sides. Eighth antennal 

 joint triangular, about twice as long as wide, the terminal edge oblique. Front 

 tibiae bisulcate; middle tibiae silicate. Length 2.8-3.5 mm. 



Sab. — California (Pasadena, Riverside and Ft. Yuma) ; Arizona 

 (Tucson) ; Lower California (San Jose del Cabo). 



Most nearly resembles luteotectum, but this latter has nonsulcate 

 middle tibiae and still denser pubescence, which is more distinctly 

 yellow in color. The coarser punctuation is much less developed 

 and the front tibial grooves are strictly marginal and thus more 

 widely separated than in vestitum. 



25. C. pullial iiiii Fall. — Eufocastaneous, surface entirely concealed by the 

 very dense yellowish white pubescence. Form short and strongly convex, two- 

 thirds as wide as long, quite strongly gibbous in profile. Coarser punctures 

 sparse and fine. Metasternum finely very sparsely puuctate from side to side. 

 Eighth antennal joint triangular, one-half longer than wide, terminal edge 

 oblique. Front tibiae finely bisulcate; middle tibiae with a fine marginal groove. 

 Length 1.8-2 mm. 



Sab. — California (Yuma and Needles, Wickham). 



I have taken this species early in July at Yuma, where it 

 occurred on a species of Dalea. It is the most broadly oval and 

 most densely pubescent species in our fauna. 



26. C placidum n. sp. — Brown, moderately pubescent, very slightly more 

 than half as wide as long, oblong-elliptical, not gibbous in profile. Coarser punc- 

 tures moderately numerous but not large on the elytra, a little finer still on the 

 pronotum and very inconspicuous though visible on the head. Metasternum 

 finely sparsely puuctate at middle, the punctures not extending to the sides. 

 Eighth antennal joint one-half longer than wide, triangular. Front tibiae bisul- 

 cate; middle tibiae with a distinct marginal groove. Length 3-3.2 mm. 



Sab. — Lower California (San Jose del Cabo). 



