IIO CASEY 



becoming parallel and straighter in about basal half, the apex 

 moderately sinuate in circular arc, two-thirds as wide as the base, 

 the angles right and only narrowly rounded ; surface finely and 

 sparsely but distinctly punctate, decidedly coarsely, very deeply and 

 much more closely so toward the sides, the marginal bead rather 

 thick, perfectly straight to the apex of the basal angles ; scutellum 

 well developed, transversely triangular; elytra one-half longer 

 than wide (9) or less (J% the sides feebly converging from the 

 base and nearly straight almost to apical third, then strongly 

 rounded and converging to the obtusely ogival tip ; surface nearly 

 smooth or with a suspicion of broadly tumescent lines, not coarsely 

 but very strongly, sparsely punctured, decidedly more coarsely 

 and less sparsely toward the sides; prosternum minutely, sparsely 

 punctate, polished, the process moderately wide, feebly dilated 

 and rounded apically, with a continuous beaded edge (6\ ?); 

 hind femora and abdomen finely, remotely punctate. Length 

 11.0-11.7 mm -5 width 5.18-5.3 mm. California (Humboldt 

 Co., Hoopa Valley) atronitens n. sp. 



Form nearly similar, smaller in size, convex, glabrous, the legs piceous 

 distally ; surface scarcely at all alutaceous ; head finely, not densely 

 punctate, the sinus very much broader and relatively shallower than 

 in the preceding, the sides more oblique, the anterior canthus much 

 less prominent than the posterior and coming to an obtuse point 

 at the eye; prothorax shorter, fully three-fifths wider than long, 

 similar in general form, the apex moderately sinuate, fully three- 

 fifths as wide as the base, the angles right and only slightly blunt; 

 surface sparsely, excessively minutely and scarcely visibly punc- 

 tulate, more visibly but still sparsely and very finely toward the 

 sides, where the bead is finer than in atronitens though bordered 

 internally by a broader groove; scutellum somewhat smaller; 

 elytra one-half longer than wide (c?) the sides more converging 

 from the base to apical third than in atronitens (c?), straight, 

 more gradually converging and acutely ogival at apex ; surface 

 nearly smooth, very sparsely and finely punctate, somewhat more 

 strongly and less remotely toward the sides ; prosternum minutely, 

 rather sparsely punctate, the process a little broader, more dilated, 

 convex and obtusely angulate at apex, finely margined and only 

 along the coxae ; hind femora finely but less sparsely punctate, the 

 abdomen excessively minutely, remotely so. Length 10.3 mm. ; 

 width 4.6 mm. California (locality unrecorded).... sparsa n. sp. 



3 Form broader, less convex, strongly cuneiform; under surface, 

 legs and base and apex of the antennae rufescent, subglabrous, the 

 setae extremely minute though visible; head very finely but 

 strongly, evenly and rather closely punctate, the sinus moderately 

 broad and deep, parabolic, the oblique sides rounded evenly from 

 the obtusely pointed canthus at the eye, much less prominent than 

 the posterior, to the apical lobes, which are rather angulate ; pro- 

 thorax fully two-thirds wider than long, the sides evenly round- 



