THE CANADIAN ENTOMOLOGIST. 263 



pronounced asperity at its anterior margin, the interspaces with a few 

 very fine and extremely feeble scattered punctules. Length, °. , 14 5 

 mm.; width, 5.4 mm. Levette cabinet, — probably from the middle 



Sierras punctifrons, Csy. 



A — Similar, except that the male is fully as stout as the female of 

 punctifrons, and the labrum, instead of having the usual close-set 

 series of, setiferous punctures, is smooth, polished and with only 

 four apical punctures, omitting those at the angles ; prothorax 

 similar : elytra more shouldered, much more rounded and obtuse 

 at apex and with the punctures smaller, much closer and irregularly 

 subconfluent throughout, the foveae similarly larger than usual but 

 very few in number and not conspicuous. Length, <$ , 14.0 mm.; 



width, 5.3 mm. Sierra Co degener, n. subsp. 



Form ( 9 ) slightly stouter than in punctifrons, the head nearly similar, bi t 

 with the rugse and anterior punctures finer ; prothorax relatively 

 larger, more finely rugulose and rounding and parallel at the sides in 

 apical two-fifths ; elytra more broadly oval, similarly acute at tip but 

 more shouldered at base, the margins more strongly reflexed, and the 

 punctures smaller and densely confluent throughout. Length, $ , 

 14.2 mm.; width, 5.6 mm. Origin as in punctifrons .. confluens, Csy. 

 19 — Body ( $ ) decidedly slender but with relatively rather large pro- 

 thorax, deep black, alutaceous, the elytra shining ; head very finely 

 wrinkled, the anterior impressions large but shallow ; prothorax 

 distinctly wider than long, much wider than the head, of the usual 

 form in this group, densely and rather strongly rugulose throughout, 

 the transverse impressions and median stria feeble ; elytra scarcely 

 more than one-half longer than wide, feebly shouldered, gradually 

 obtusely parabolic apically, the punctures coarse, irregular, rather 

 evidently separated, the interstices shining with faint alutaceous lustre. 

 Length, $ , 14.0 mm.; width, 5.1 mm. Placer Co. .fraterculus, n. sp. 

 20 — Pronotum finely and generally closely but obviously wrinkled 

 throughout ; head rugose, obliquely bi-impressed anteriorly, with the 

 intermediate surface smoother and more or less distinctly, finely 



punctate, as in the preceding group 21 



Pronotum smooth centrally, the vermiculate sculpture wholly obsolete. . 22 



21 — Elytral punctures moderate, rather close-set. Body deep black, dull 



in lustre, the elytra more shining ; head rugose ; labrum strongly 



advanced medially ; antennre moderately stout ; prothorax wider than 



long, only moderately narrowed posteriorly, with the sides more or 



