CALIFORNIA ACADEMY OF SCIENCES. 7 



This species, although closely allied to the preceding, is 

 distinguishable from it by its smaller size, more robust 

 form, larger prothorax, coloration of the body, paler abdom- 

 inal apex, less conspicuous pubescence and shorter first 

 joint of the posterior tarsi. It is described from the male, 

 the sixth segment being sinuate at apex; the sinus is rather 

 more acutely rounded than in rugosum, and is about four 

 times as wide as deep. The structure of the labrum is sim- 

 ilar to that of ricgosuni. 



3 — C. angulatuni i^- sp. — Form slender, moderately convex; color tlirough- 

 out black, legs piceous-black, antennae and palpi same, tarsi piceo-testaceous; 

 pubescence of the elytra and abdomen moderately dense, very fine, recum- 

 bent, fulvous in color, sparser and coarser anteriorly except at the sides of 

 the head behind the eyes. Head moderate, slightly longer than wide; sides 

 parallel and feebly arcuate; base truncate, angles distinctly rounded; surface 

 moderately convex, depressed anteriorly, very finely and densely punctate; 

 antennae very slender, nearly as long as the head and prothorax together; basal 

 joint scarcely as long as the next two combined, second and third equal in length, 

 the former scarcely preceptibly more oval, tenth as wide as long. Prothorax 

 quadrate; sides just perceptibly convergent posteriorly and nearly straight; 

 base broadly, rather strongly and nearly evenly arcuate, much more strongly 

 so than the apex, which is broadly aud rather feebly arcuate and feebly sinu- 

 ate in the middle; apical angles slightly obtuse and scarcely perceptibly 

 rounded, basal very broadly rounded; disk scarcely wider than the head, 

 moderately convex, very finely, rather strongly and irregularly rugulose; 

 median line rather obsolete. Elytra at base very slightly wider than the 

 head; sides parallel and feebly arcuate; together broadly, triangularly and 

 distinctly emarginate behind; disk transversely and very moderately convex, 

 very feebly impressed along the suture toward b\se, not impressed toward 

 the apex, scarcely one-third longer than wide, about one-third longer than 

 the prothorax, extremely minutely, densely and evenly punctate; punctures 

 asperate and not sparser near the apex. Abdomen having the sixth and the 

 apex of the fifth segments very slightly paler, piceo-testaceous; surface 

 transversely and finely strigate in wavy and very broken rows of minute 

 and closely-placed asperities. Legrs moderate; first joint of the posterior tarsi 

 slightly shorter than the next two together. Length 3.5 mm. 



San Mateo Co., 3 (Mr. Fuchs). 



Described from the male; the sixth segment is sinuate at 

 apex, the sinus being very broadly rounded and about six 

 times as wide as deep. 



