CALIFORNIA ACADEMY OF SCIENCES. 23 



roiiuded; sides parallel, nearly straight; epistoma rather strongly produced, 

 broadly and very feebly arcuate at the apex; aiitennal tuberculations mimite 

 and slightly promiuent; labrum rather large teeth minute, very acute; an- 

 tenna slightly shorter than the head and prothorax together, second joint 

 two-thirds as long as the third and scarcely longer than the fourth; occiput 

 rather convex, somewhat finely, evenly and sparselj'- punctate; punctures 

 round and rather deep; median impuuctate area rather broad, equal through- 

 out, well-marked. Prothorax quadrate, just visibly narrower than the head; 

 sides parallel and nearly straight; base broadlj^ rather strongly and evenly 

 arcuate; apex broadly and very feebly so; nuchal siuuation very feeble, two- 

 fifths as wide as the disk; apical and basal angles rather broadly and nearly 

 equally rounded; disk transversely, evenly and rather strongly convex, finely 

 margined along the base, very finely, feebly and somewhat sparsely punctate 

 in the middle, twice as densely so at the sides; median impunctate area equal 

 throughout, moderately wide, with a very fine feeble median stria near the 

 base. Elytra at base distinctly wider than the prothorax; sides parallel and 

 feebly arcuate; together broadly, sub-angularly and distinctly sinuate behind 

 disk one-fourth longer than wide, nearly one-half longer than the pronotum, 

 feebly impressed along the slightly elevated suture, rather finely, densely, 

 strongly and rugulosely punctate, the punctures being in transverse wavy 

 series near the apex. Abdomen slightly narrower than the elytra; sides par; 

 allel and nearly straight; surface very miuutely, densely and sub-asperately 

 punctate. Legs rather long and slenler; first joint of the posterior tarsi one- 

 half longer than the second, shorter than the next two together, fully as long 

 as the fifta; anterior tarsi very slightly dilated. Length 4.3 mm. 



San'Mateo Co., 1 $> (Mr. Fuchs). 



The fifth segment is very broadly eniarginate nearly 

 throughout its width at apex, the sides of the notch being- 

 straight, very strongly convergent, and each having a fringe 

 of seven stout, equal and closely-placed spinules; median 

 porrected process very short and broad, very strongly sin- 

 uate at the apex; sixth segment parabolically emarginate at 

 apex, notch nearly twice as wide as deep; seventh broadly 

 divided, incisure in the form of a very elongate acute tri- 

 angle. 



This S23ecies is remarkable for the unusually elongate 

 basal joint of the posterior tarsi, which, however, comes 

 well within the generic definition. It bears a considerable 



o 



resemblance to consanguinea, but differs in the narrower 

 form, and especially in the form of the pronotum, which is 

 as long as wide in the present species and slightly, though 



