CALIKOKXIA ACADKMV OF SCI KXCKS. 81 



separated 1>y more than their own \vidths; and seti^'orous. Alxloinen rather 

 robust, nearly as wide as the elytra; border moderate; surface very niiuuti'ly. 

 feebly, densely and sub-asperatel}^ punctate, the asperities being arranged in 

 very close, interrupted, transverse wavy lines. f^''<js moderate; anterit)r tarsi 

 distinctly dilated, fourth joint slightly eniarginate, lirst four joints of the 

 posterior tarsi decreasing uuiforuily and very gradually in length, tlie tlrst 

 less thau one-half longer than the seeond and much shortir (lian the lifth. 

 fourth longer thau wide. Length 3.S mm. 



Santa Clara Co., 1 S . 



The tii'tli ventral segment is thickened in the middle third 

 at apex, the edge being obliquely beveled and liaving a 

 dense eomb-like row of very minute, parallel, longitudinal 

 black ridges or strig;e; sixth segment broadly and very 

 strongly eniarginate at apex, tlie emargination ucutely 

 rounded anteriorly and having at each side, slightly distant 

 from the edge of the notch and at about the middle of its 

 length, a small brush of very long densely-placed hairs: 

 seventh s(\gment very narrowly divided, truncate at tip, 

 large and prominent. 



25 — M. QUadricollis n. sp. — Form rather robust; head piceous-b]ack;prouo- 

 tum and elytra pale rufo-testaceous, the latt(;r slightly the paler; al)domeu 

 pale brownish-fuscous; legs, anteume, labrum and palpi concolorous, very 

 pale flavate; pubescence sparse anteriorly, coarser, much denser and not 

 very conspicv;ous on the elytra and abdomen, distinctly denser on the latter; 

 integuments alutaceous. Head moderate, as wide as long; sides short, par- 

 allel; base truncate, angles rather broadly rounded and slightly prominent; 

 surface moderately and evenly convex, extremely minutely aud densely 

 punctate, with a very narrow median line which is totally obliterated ante- 

 riorly; antennaj rather robust, as long as the head aud prothorax together, 

 second joint three-fourths as long as the third. Prathorax nearly quadrate; 

 sides jiarallel and feebly arcuate; base broadly and rather feebl}' arcuate; 

 apex broadly arciiate, very feebly and roundly eniarginate in tin; middle 

 third, with the edge at each side just without the emargination slightly sinu- 

 ate; apical angles very narrowly rounded, basal broadly so; disk distinctly 

 longer than the head, exclusive of the labrum, aud very slightly wider, 

 broadly and rather feebly convex, excessively minutely and densely punc- 

 tate; punctures noticeably sparser toward the middle, where there is a very 

 narrow imperfect impuuctate line, aud, near the base, a short median stria. 

 Elytra very slightly wider than the i)ronotum; sides parallel and slightly 

 arcuate; together broadly and extremely feebly sinuate at apex; disk slightly 

 longer thau wide, scarcely one-fourth longer thau the prouotum, very mi- 



