480 CALIFORNIA ACADEMY OF SCIENCES. 



distinctly ■wider than the tenth, nearly three-fourths longer than wide, 

 conoidal, acuminate. Prothorax widest in the middle, where the sides are 

 strongly rounded, thence strongly convergent toward base and apex, very 

 feebly sinuate near each limit; base broadly arcuate, scarcely two-thirds as 

 wide as the disk, one-half wider than the apex; the latter feebly arcuate and 

 less than one-half as wide as the disk; lateral teeth minute, in a transverse 

 line with the lateral foveas; the latter deep, at slightly less than one-third 

 the length from the base, connected by a fine, posteriorly arcuate groove; 

 median canaliculation fine, crossing the transverse groove; obsolete near the 

 base and apex, not at all dilated except near its basal limit; disk about as 

 long as wide. Elytra scarcely one-fifth longer than the prothorax, at apex 

 nearly one-half wider than the latter; disk distinctly wider than long, feebly 

 convex; stria one nearly straight, two slightly arcuate, united with one at 

 one-third the length from the apex, three two-thirds and four one-half as 

 long as the elytra respectively, all deeply impressed. Abdomen nearly as 

 wide as and distinctly longer than the elytra. Legs rather short and robust. 

 Length 1.8 mm. 



California (Placer Co. 1). 



Described from the female. It can very readily be dis- 

 tinguished from all the species previously known b} r its 

 slender form, short elytra and peculiar disposition of the 

 elytral striee. 



SONOMA Casey. 



S. COrticina n. sp. — Linear, depressed, pale testaceous throughout; 

 pubescence fine, rather short, not dense. Head slightly wider than long, a 

 little shorter and narrower than the prothorax; eyes small, at the middle of 

 the sides; genas long, rounded, longer than the eyes and nearly as promi- 

 nent; front feebly convex, impunctate, having, at nearly one-third the length 

 from the base, two small nude punctiform foveas, mutually slightly less dis- 

 tant than either from the eye, and, at the vertex, behind the line of the an- 

 tennas, a large, deep circular fovea which is completely nude; antennas one- 

 third longer than the head and prothorax together, slender, feebly clubbed, 

 first joint much longer and slightly more robust than the second, the latter 

 nearly one-half longer than wide, oval, joints three to eight moniliform, 

 gradually shorter, the latter slightly wider than long, joints eight to ten 

 similar in form, gradually slightly larger, eleventh slightly wider than the 

 tenth, a little longer than wide, obtusely acuminate, not as long as the two 

 preceding together; under surface transversely and feebly impressed just 

 behind the rnentum, and more deeply so along the basal margin; fourth 

 joint of the maxillary palpi longer than wide, compressed, oval, having a dis- 

 tinct terminal process. Prothorax widest in the middle; sides broadly 

 rounded to the neck, convergent and distinctly sinuate near the base; disk 



