70 MEMOIRS ON THE COLEOPTERA 



46 Body more abbreviated, moderately convex, the elytra castaneo- 

 piceous; under surface piceo-rufous, the abdomen pale; head moder- 

 ately large, very nearly as wide as an elytron; antennae long, slender, 

 colored as in optatum, the medial joints barely three times as long 

 as wide; prothorax as in the preceding, except that the sides are more 

 gradually sinuate near the base, becoming not quite parallel in about 

 basal sixth, the surface nearly similar but not so punctured basally: 

 elytra shorter, oblong-oval, with rather more arcuate sides, one-half 

 longer than wide and one-half wider than the prothorax, the striae 

 shorter, disappearing near apical fourth, not quite so coarse or deep, 

 the punctures nearly similar, the seventh series only evident toward 

 base in the type; foveae at two-fifths and before three-fourths. 

 Length (cf ) 4.8 mm.; width 1.8 mm. California (Mendocino Co.). 



merens n. sp. 



Body more elongate, the head and pronotum blacker, with strong green- 

 ish gloss, the elytra deeper castaneous, with similar lustre, the under 

 surface and legs similar; head less developed, very distinctly nar- 

 rower than an elytron, the eyes similar, the sulci even broader and 

 deeper; antenna? of like coloration, long, slender, the medial joints 

 fully three times as long as wide; prothorax nearly as in merens but 

 only a third wider than long, with feebler transverse impressions 

 and with a few punctures basally, differing especially in having the 

 sides more abruptly straight and perfectly parallel in basal sixth or 

 seventh, the angles right and extremely sharp, almost prominent; 

 elytra oblong-oval, having sensibly arcuate sides and gradually 

 rounded apex, fully three-fifths longer than wide, two-thirds wider 

 than the prothorax, the striae and punctures throughout nearly as 

 in merens, the foveae at basal and apical third. Length (cf ) 5.0 mm.; 

 width 1.8 mm. Southern California, without further indication of 

 locality sedulum n. sp. 



47 Elytra with the posterior fascia reduced to an isolated lateral spot 

 on each .48 



Elytra with the bioblique fascia complete or suturally interrupted. . . .51 



48 Head relatively large, as wide as an elytron, sometimes apparently 

 wider. Elytral striae abbreviated near the apex; seventh stria with 

 the punctures evident only toward the base; body long and slender, 

 moderately convex, the elytra evidently wider posteriorly than at 

 base, black, with strong steel-blue lustre, the elytra sometimes pice- 

 ous or even paler and castaneous, the posterior spot small or moder- 

 ate; legs pale rufous, the femora more or less blackish except dis- 

 tally; head but little narrower than the prothorax, the antennae 

 fuscous, pale basally, slender, nearly as long as the elytra, the 

 medial joints three times as long as wide; prothorax just visibly 

 wider than long, the strongly and evenly rounded sides abruptly 

 becoming parallel and straight in basal fifth or sixth, the right angles 

 very sharp; surface strongly convex, punctulate at base, the im- 

 pressions more or less feeble, the foveae large, deep, broadly sub- 

 linear, the carina short and fine; margins extremely finely reflexed; 

 elytra three-fifths longer than wide, fully three-fourths wider than 

 the prothorax; striae somewhat coarse but feebly impressed, strongly, 



