CALIFORNIA ACADEMY OF SCIENCES. 325 



of the elytra, strongly sinuate near the basal angles; disk rather convex, rer- 

 fectly even throughout. Scutellum small, equilatero-triangular. Elytra at 

 the humeri slightly narrower than the pronotum; sides parallel and rather 

 strongly arcuate for three-fifths the length, thence rather rapidly convergent 

 to the apex which is narrow and sub-truncate; inner angles scarcely rounded; 

 humeri rounded; disk one-half longer than wide and about two-thirds longer 

 than the head and prothorax together, widest at about one-third the length 

 from the base. Legs rather short and robust; posterior coxa? triangular, 

 nearly twice as wide as long, sinuate outwardly, apex narrowly rounded. 

 Under surface of the abdomen more shining than the upper. Length 0.55 mm. 



California (Mt. Diablo, 1; Santa Cruz, 2). 

 The sub-asperate granulation of the surfaces is feebler 

 and rather sparser than in the other species here noted. 



A. granulosum n - S P- — Form rather slender, more cylindrically convex 

 than robmtulum ; color throughout the body, legs and antennae intense black; 

 tarsi and anterior coxas slightly piceous; pubescence excessively fine and 

 short, recumbent and somewhat dense, pale fusco-cinereous; upper surface 

 feebly shining, very finely, densely and evenly granulate; granulation strong 

 and slightly asperate. Head two-thirds wider than long, convex; eyes rather 

 small but very prominent, very coarsely granulate; epistoma narrow, bn adly 

 rounded at apex; labium longer than wide, acutely rounded; antennas much 

 longer than the head and prothorax together, two-fifths as long as the body; 

 joints of club increasing rapidly in length but very gradually in width. Pro- 

 thorax slightly wider and distinctly longer than the head, two-thirds wider 

 than long; sides parallel and arcuate; anterior angles viewed laterally nar- 

 rowly rounded, posterior excesbively broadly rounded, almost obsolete; base 

 broadlj' and strongly arcuate, just visibly sinuate laterally; disk sirongly 

 convex and perfectly even. Scutellum triangular, small, very slightly wider 

 than long. Elytra at the humeri just visibly narrower than the prothorax; 

 sides parallel and slightly arcuate for three-fifths the length, thence slightly 

 more convergent posteriorly; together obtusely rounded behind; humeri 

 narrowly rounded; disk widest at two-fifths the length from the base where 

 it is very slightly wider than the pronotum, sub-cylindrically convex, three- 

 fourths longer than wide and fully twice as long as the head and pronotum 

 together. Legs rather slender; under surface of the abdomen polished and 

 minutely reticulate; posterior coxae more than twice as wide as long, semi- 

 circularly rounded within at the apex, sinuate outwardly. Length 0.50 mm. 



California (San Jose, Santa Clara Co., 7; Santa Cruz, 4). 



This species may be distinguished at once from robustulvm 

 by its more attenuated form, more dense and stronger gran- 

 ulation, and more particularly by the color of the legs and 



