104 CALIFORNIA ACADEMY OF SCIENCES. [38] 



integuments polished; pubescence fine, short, subrecumbent, rather dense. 

 Head moderate, slightly wider than long; eyes moderate, at less than their 

 own length from the base; sides strongly rounded to the base, which is very 

 broadly truncate or just visibly sinuate; surface feebly convex, finely, evenly 

 and distinctly punctate; occipital foveae rather small, feebly impressed, on a 

 line through the middle of the eyes, mutually slightly more than twice as 

 distant as either from the eye; apical fovea wanting; vertex broadly, feebly 

 sinuate above, abruptly and very sti - ongly declivous, the face of the decliv- 

 ity bearing a transversely oval sensitive area of very dense, erect, short 

 setce; antennae rather short and robust, about as long as the head and pro- 

 thorax together, club somewhat robust; two basal joints, rather small, the 

 second slightly the smaller, third narrower, slightly longer than wide, per- 

 ceptibly obconical, fourth very slightly wider, a little transverse, fifth 

 slightly dilated, a little longer than wide, seventh and eighth equal, a little 

 narrower, very slightly narrower than long; joints eight to eleven uniformly, 

 rather rapidly increasing in width, eighth as wide as the seventh, eight to 

 ten wider than long. Prothorax widest at two-fifths its length from the 

 apex, where it is scarcely perceptibly wider than the head and distinctly 

 ■wider than long; sides strongly, evenly rounded, moderately convergent 

 and nearly straight toward base; the latter broadly, feebly arcuate, four- 

 fifths as wide as the disk, one-half wider than the apex; the latter trans- 

 versely truncate; disk strougly convex, finely, rather densely and evenly 

 punctate, lateral fovea- rather large, moderately impressed, at slightly 

 more than one-third the length from the base; median very small, near the 

 base. Elytra at base slightly wider than the prothorax, at apex scarcely 

 twice as wide as the latter; sides evenly and rather strongly arcuate; disk 

 very slightly wider than long, moderately and evenly convex, very minutely, 

 not densely punctate; sutural striae deep, nearly parallel; discal distinct, 

 arcuate, terminating at slightly less than one-fifth the length from the apex. 

 Abdomen moderately convex; basal segment nearly as long as the next two 

 together; bisul carina; very fine, very distinctly divergent, distant by about 

 one-fourth the total width, slightly less than one-third as long as the seg- 

 ment. Legs short and robust; intermediate tibire short, robust, not at all 

 clavate, slightly thicker in the middle, having a large, robust terminal spur; 

 posterior tibiae longer, more slender, slightly clavate. Length 1.3 mm. 



California; (San Mateo Co. 1). 



The description is taken from the male. The terminal 

 segment is rather broadly and extremely feebly emarginate 

 at apex. 



This species belongs near the last, but may easily be dis- 

 tinguished from any hitherto described by its colors, punc- 

 tuation and male sexual characters. The female probably 



