CALIFORNIA ACADEMY OF SCIENCES. 9 



entire genus, but are more conspicuous in those species hav- 

 ing very dense sericeous abdominal pubescence. This spe- 

 cies is YSYy distinct being distinguished by its size and very 

 dense punctuation, also by the rather more transversely 

 oval pronotum with broadl}^ rounded anterior angles. 



5— C. COntractum. n, sp.— Slender, black; elytra slightly paler, piceons, 

 slightly rufous at the apices; legs pale brownish-testaceous, tarsi paler, 

 brownish-flavate; antennae dark rufo-testaceous throughout; maxillary palpi 

 piceous-brown; entire under surface same; pubescence of the elj^tra mode- 

 rately dense, very short and fine, that of the abdomen much longer, coarser 

 and denser, that of the head and pronotum excessively fine, rather sparse 

 and not conspicuous. Head moderate; sides extremely feebly convergent 

 X^osteriorly and very slightly arcuate; base truncate, angles narrowly rounded; 

 surface slightly longer than wide, moderately convex, rather coarsely and 

 somewhat sparsely punctate, with a narrow median impuuctate line; two setig- 

 erous punctures at the apical margin of the epistom.a large and prominent; an- 

 tennae slender, nearly as long as the head and prothorax together; basal joint 

 scarcely as long as the next two together, second two-thirds as long as the 

 third and slightly longer than the fourth, tenth about as long as wide, 

 eleventh ovoidal, acuminate, slightly shorter than the preceding two com- 

 bined. Prothorax quadrate, distinctly wider than the head; sides j)arallel 

 and distinctly arcuate; base rather broadly and strongly arcuate, slightly 

 more strongly so than the apex; apical angles rather narrowly rounded, basal 

 very broadly so; disk transversely and moderately convex ; median line obsolete, 

 or very nearly so; xerj finely, feebly and densely punctate; punctures very 

 feebly impressed and separated by their own widths. Elytra at base very 

 slightly wider than the in'onotum; sides nearly parallel, feebly arcuate, dis- 

 tinctly more strongly so near the apices; together broadly, angularly and 

 very feebly emarginate at the apex; disk convex and declivous at the sides, 

 dej)ressed in the middle, feebly impressed on either side of the feebly elevated 

 suture, scarcely one-fourth longer than wide, one-third longer than the pro- 

 thorax, rather coarsely and densely punctate; punctures much finer and more 

 asperate near the &pex. Abdomen slightlj^ narrower than the elytra; sides 

 parallel; sides of the fifth segment strongly convergent posteriorly; surface 

 rather convex, transversely strigate in very disconnected wavy lines of 

 moderately coarse asperities. Legs slender; first joint of the posterior tarsi 

 nearly as long as the next two together. Length 3.2-3.6 mm. 



Santa Clara Co., 9; Monterey Co., 4; Humboldt Co., 1. 



In the specimen from Humboldt the elytral punctuation 

 is decidedly coarser and denser. The type is a male, the sixth 

 segment being slender and sinuate at apex; the sinus is 

 rather narrowly rounded and about four times as wide as 



