40 MEMOIRS ON THE COLEOPTERA 



tinct; elytra three-fourths longer than wide, slightly inflated behind 

 the middle, obtusely ogival in apical third, not quite one-half wider 

 than the prothorax; striae deeply impressed, with convex intervals; 

 fovese at three-sevenths and four-fifths; legs longer and more slen- 

 der than in the preceding. Length (i cf , 3 9 ) 4.2-4.5 mm.; width 

 1.5-1.6 mm. California (coast regions just north of San Francisco). 



vespertinum n. sp. 



Body shorter, the prothorax much more abbreviated 7 



7 Elytral striae not at all impressed, fine, deep and groove-like through- 

 out, though still finer at the sides, virtually impunctate; intervals 

 perfectly flat. Body depressed, black, not metallic, the legs piceous- 

 black; head three-fourths as wide as the prothorax, the sulci moder- 

 ately deep, alutaceous as usual; antennae slender, piceous-black, 

 with paler basal joint, four-fifths as long as the elytra, the medial 

 joints between two and three times as long as wide; prothorax two- 

 fifths wider than long, the broadly rounded sides becoming oblique 

 and broadly, just visibly sinuate behind, the angles slightly more 

 than right; stria deep but only between the very feeble transverse 

 impressions; foveae large, rather shallow, rugose, only indefinitely 

 deeper medio-basally, the carina rather long and strong; elytra 

 very feebly inflated posteriorly, with feebly arcuate sides, circu- 

 larly rounded in posterior third, one-half longer than wide, less 

 than one-half wider than the prothorax; foveae at three-sevenths and 

 near three-fourths. Length (9) 3-5 mm.; width 1.28 mm. Cal- 

 ifornia (Soda Springs, Anderson Valley, in or near Mendocino Co.). 



effetum n. sp. 

 Elytral striae deeply impressed, with convex intervals as in all the others 



of this section 8 



8 Head well developed, almost as wide as the prothorax. Black, shin- 

 ing, with feeble greenish lustre on the head and pronotum, the legs 

 blackish-piceous; head with prominent eyes, the rather deep sulci 

 feebly alutaceous; antennae slender, black, about three-fourths as 

 long as the elytra, the medial joints three times as long as 

 wide; prothorax two-fifths wider than long, with the base and apex- 

 equal, the sides strongly and evenly arcuate, becoming distinctly 

 sinuate posteriorly and nearly parallel before the angles, which are 

 right and sharp, the apical angles not very blunt; surface slightly 

 convex, the impressions very feeble, the stria fine; margins rather 

 broadly and strongly reflexed; foveae large, shallow, rugulose, deeper 

 centrally at base, the carina moderate but distinct; elytra oblong, 

 with parallel, broadly arcuate sides, obtusely and subcircularly 

 rounded in nearly apical third, somewhat less than one-half longer 

 than wide, four-fifths wider than the prothorax; striae rather deeply, 

 subequally impressed throughout the width and entire as usual; 

 deeper apical part of the fifth short and very oblique; intervals 

 broadly convex, the foveae at three-sevenths and four-fifths. Length 

 (cf 9 ) 3.8-4.2 mm.; width 1.5-1.7 mm. California (Duncan's 



Mills, Sonoma Co.). Ten examples oppressum n. sp. 



Head smaller, distinctly narrower than the prothorax 9 



9 Form oblong, depressed, deep black throughout and lustrous, the 



