34 Memoirs on the Coleoptera 



converging behind the middle to the posterior sinus, the angles right 

 and very sharp; surface with some feeble transverse rugulae, the 

 anterior impression deep, the posterior evident though feeble, stria 

 deeply impressed, ending at the impressions; foveae deep, smooth, 

 elongate, formed by the strongly reflexed sides and therefore not 

 definitely limited; base transverse, only feebly oblique laterally, 

 barely as wide as the moderately sinuate apex; elytra one-half 

 longer than wide, very nearly twice as wide as the prothorax, the 

 arcuate sides becoming barely more rounded toward the humeri; 

 apex rather obtuse, the oblique sinus long and very feeble; striae 

 deep, smooth, the intervals very convex; met-episterna distinctly 

 elongate; tarsi black. Length (cf) 10.5 mm.; width 4.2 mm. 

 Washington State .maurus Mots. 



Body larger and stouter, similarly deep black and polished throughout 

 in both sexes; head but slightly elongate and with rather broad 

 neck, nearly three-fourths as wide as the prothorax, the eyes moder- 

 ate in size and prominence; antennae slender, fusco-ferruginous, 

 black basally, fully half as long as the body (cf ) or a little less ( 9 ) ; 

 prothorax as long as wide, the sides broadly and strongly reflexed, 

 more rounded at a little before the middle, oblique posteriorly to 

 the moderate basal sinus; basal angles obtuse but with acutely 

 prominent tips; base as wide as the apex, becoming obliquely 

 arcuate at the sides; apical angles prominent but bluntly rounded 

 at tip; surface sometimes with a few faint rugulae, the anterior 

 impression not very deep, the posterior obsolete; foveae large, very 

 deep, lineate at the bottom, smooth; elytra three-fifths longer 

 than wide, rather inflated, with arcuate sides, becoming but little 

 more rounded basally, the sinus oblique, long and distinct though 

 not deep; striae deep, smooth, the intervals strongly convex; met- 

 episterna one-half longer than wide; second joint of the male 

 anterior tarsi one-half longer than wide, parallel, narrowing in 

 basal half. Length (cf 9) 11.0-12.5 mm.; width 4.2-5.2 mm. 

 California (San Francisco). Ten specimens, taken by the writer. 



ovipennis Mann. 



II — Sides of the elytra feebly arcuate, more rapidly rounding at the 

 humeri. Body rather depressed, black and polished, the legs and 

 anterior parts slightly piceous; head elongate, with rather wide 

 neck, two-thirds as wide as the prothorax, the anterior impressions 

 narrow; eyes only very moderately prominent; palpi long, blackish, 

 with pale tip; antennae long and slender; prothorax about as long 

 as wide, the sides broadly rounded and widely reflexed, becoming 

 ' oblique and straight basally to the prominent tips of the obtuse 

 basal angles; base as wide as the apex, obliquely rounded at the 

 sides; apical angles bluntly prominent; surface with some trans- 

 verse rugulae, the anterior impression very feeble, the posterior 

 obsolete, the stria fine, attaining apex but not base; foveae smooth, 

 very deep, extending to beyond the middle; elytra oblong, slightly 

 over one-half longer than wide, three-fourths wider than the pro- 

 thorax, the apex rather rapidly obtuse, with the sinus broad and 

 shallow; striae smooth, deeply impressed, the intervals notably 



