276 MEMOIRS ON THE COLEOPTERA 



(c?) 6.0 mm.; width 2.2 mm. California (Gualala River, Mendocino 



Co.) censors n. sp. 



1 6 Form stout, very moderately convex, strongly shining, deep black 

 throughout above and beneath, the minute reflexed thoracic margins 

 and the epipleura alone pallescent; legs varicolored as in the pre- 

 ceding two species; head scarcely three-fifths as wide as the prothorax, 

 with large but only very moderately convex eyes; antennae moder- 

 ately slender, the joints not very elongate, the basal pale; prothorax 

 two-fifths wider than long, parallel, the sides evenly and rather 

 strongly arcuate; apex feebly sinuate, with bluntly rounded angles 

 and barely visibly narrower than the base, which is feebly arctiato- 

 truncate, with broadly rounded angles; surface throughout nearly 

 as in the two preceding, the very feeble vague foveae with a few rather 

 distinct punctures; elytra nearly one-half longer than wide and two- 

 fifths wider than the prothorax, obtuse at apex, with very feeble 

 sinus; striae very fine, the surface throughout nearly as in consors 

 but with the suture not in the least paler; basal joint of the hind tarsi 

 sensibly longer than the fifth; abdomen medially toward apex with 

 very fine sparse and minutely pubiferous punctures as usual in the 

 female. Length (9) 5-7 mm.; width 2.22 mm. California (Lake 

 Tahoe). A single specimen, taken by the writer., .debiliceps n. sp. 



17 Form stout, the general coloration darker 18 



Form rather slender, the general coloration less dark, more piceous. . . 19 

 1 8 Body oblong-suboval, moderately convex, shining, black, with 

 decided greenish lustre throughout above, all the margins of the 

 pronotum and the reflexed margin of the elytra narrowly but very 

 distinctly pale, the suture seldom at all pallescent; under surface 

 black, the epipleura and the legs in great part pale, the femora in- 

 fumate except basally, the tibiae blackish at apex and the tarsi black, 

 the anterior (cf ) piceous; head well developed, with prominent eyes 

 and long slender black antennae, the basal joint pale ; prothorax rather 

 more than two-fifths wider than long, parallel, the sides subevenly, 

 moderately rounded; apex evidently sinuate, slightly narrower than 

 the feebly arcuate base, the basal angles slightly more than right and 

 narrowly rounded, much more distinct than in any of the preceding 

 species; surface finely but rather strongly, evenly reflexed at the sides, 

 the transverse impressions somewhat evident medially, the stria very 

 fine; foveaa large, isolated, feebly impressed, sublinear and within a 

 rather large area of fine moderately close-set punctures; elytra one- 

 half longer than wide to a little more, two-fifths wider than the pro- 

 thorax, parallel, with broadly Arcuate sides and very obtusely ogival 

 apex, the sinus long and very feeble; striae fine except at apex, the 

 scutellar long, the intervals nearly flat ; hind tarsi four-fifths as long as 

 the tibiae, the basal joint about as long as the next two and very little 

 longer than the fifth; male with the anterior tarsi strongly, the inter- 

 mediate much less though distinctly dilated. Length (cf 9 ) 4-4~ 

 6.9 mm.; width 2.0-2.7 rnrn. San Diego to Clackamas Co., Oregon; 

 also a single specimen from Provo, Utah, taken by Mr. Spalding 

 and sent to me by Mr. Knaus. Very abundant. A form taken at 

 Reno, Nevada, differs only in having the prothorax more narrowed 



