CALIFORNIA ACADEMY OF SCIENCES.. 331 



feebly arcuate; together broadly and very obtusely rounded behind; disk dis- 

 tinctly longer than wide; sides vertical, strongly convex behind, nearly flat 

 in the middle toward base, finely and sparsely punctate; punctures perforate, 

 slightly larger than those of the pronotum, slightly more dense near the scu- 

 tellum, irregularly distributed; humeral tuberculations strong, narrow; lat- 

 eral lobes not striate; first and second discal stripe beginning at the base, the 

 former terminating very near, the latter twice as far from the apex; 

 the third beginning at a slight distance from the base, immediately under 

 the humeral tuberculations, and continuing for a distance slightly less than 

 one-third the elytral length. Under surface finely and sparsely punctate. 

 Length 1.4 mm. 



California (Dublin, Alameda Co., 1; Paraiso Springs, 

 Monterey Co., 2). 



This species is distinguislied from the others by its very 

 small size, clear brownish-red color, and very sparse punctu- 

 ation especially that of the prothorax; it belongs near cal- 

 if ornica. 



G. calif ornica Lee. — One specimen of this species was 

 found at Yountville, Napa Co. ; it is much larger and more 

 broadly oval than occidcns, black in color with the prothorax 

 decidedly rugulose and very densely punctate; the scutellum 

 is distinctly wider than long, the elytral surface very highly 

 polished, the pubescence more sparse, and the difference 

 between the density of the pronotal and elytral punctuation 

 much more marked. The first and second stride of the elytra 

 are not entire as represented by Dr. LeConte; the first ter- 

 minates very near the apex, and the second at a distance 

 which is much more than twice as great. 



PLATYCERUS Geoflf. 



P. caiifornicus n. sp.— Very convex, slightly oval in outline, highly pol- 

 ished; body reddish-brown; legs paler, dark rufous; elytra with a slightly 

 asneous lustre. Head slightly wider than long; occiput moderately convex; 

 punctures very coarse, rounded, deeply impressed, somewhat irregularly but 

 densely distributed; a small space in the middle of the base impunctate; lat- 

 eral tuberculations moderate; labrum strongly transverse, short, very coarsely 

 and densely punctate; mandibles small, the left rather strongly toothed, the 

 right extremely obtusely and obsoletely so; antennas short, slender; basal 

 joint nearly as long as the remainder, second nearly as long as the next two 

 together, much more robust; joints three to seven closely connate; the latter 

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