116 Journal New York Entomological Society. [Vol. viii. 



pressed, moderately close and not very distinctly inclined to serial arrangement. 

 Length 1.7 mm. ; width 0.7 mm. Alaska (Kenai) vespertina Makl. 



Antennae more slender and almost half as long as the body ; pubescence short and 

 inconspicuous though rather abundant 23 



23 — Body piceous, the elytra paler and piceo-testaceous, the antennae testaceous, 

 with the club slightly dusky ; prothorax small, but little more than a third wider 

 than long, the sides distinctly, but obtusely, prominent at basal third, thence 

 strongly arcuate and convergent to the base, very feebly and indefinitely sinuate 

 before the prominence, and thence feebly convergent and broadly arcuate to the 

 apex, which is subequal in width to the base; surface broadly convex, finely but 

 strongly, densely punctate ; elytra rather short and broad, parallel, somewhat 

 narrowly parabolic behind from slightly behind the middle, three-fifths longer 

 than wide and nearly a third wider than the prothorax, the punctures rather fine 

 but strong, subimpressed, only moderately close and arranged wholly without 

 trace of order. Length 1.5 mm. ; width 0.63 mm. California (Siskiyou Co.). 



parvicollis, sp. now 



Body similar in coloration to the preceding but somewhat more narrowly oblong-oval ; 

 prothorax more transverse, two-fifths wider than long, the sides nearly similar 

 but scarcely at all prominent at basal third, the punctures less distinct and much 

 less close-set, the basal impression finer and feebler ; elytra rather shorter, but 

 little more than one-half longer than wide, very obtusely rounded behind, parallel 

 at the sides and less arcuate and only about a fourth wider than the prothorax, 

 the punctures similar but very close-set and arranged in conspicuously even, very 

 close-set rows almost throughout. Length 1. 4 mm. ; width 0.6 mm. California 

 (Siskiyou Co.) parvicollis ( $ )? 



24 — Antennae rather short, scarcely two-fifths as long as the body, the club somewhat 

 robust, with its two basal joints distinctly, though not strongly, transverse ; body 

 oblong-elongate and parallel, piceous, the elytra and antennae slightly paler and 

 testaceous ; pubescence very short and rather abundant ; prothorax two-fifths 

 wider than long, parallel, feebly sinuate at the middle point of the sides, obtusely 

 prominent behind the sinus and thence narrowed to the base, the punctures 

 strong and close-set ; elytra oblong, obtusely parabolic behind, three-fourths 

 longer than wide, distinctly, though not greatly, wider than the prothorax, the 

 punctures rather fine but strong and close-set, irregular in arrangement. Length 

 1.8 mm.; width 0.75 mm. California (Siskiyou Co.) Sllbrecta, sp. nov. 



Antennae slender, the club narrow, with the two basal joints not notably transverse.. 25 



25 — Elytra much more than one-half longer than wide and but very slightly wider 

 than the prothorax, the body narrow and elongate-oval 26 



Elytra short and broad, about one-half longer than wide and fully two-fifths wider 

 than the prothorax, the latter relatively very small 27 



26 — Body black, the elytra and antennae pale rufo-testaceous, the pubescence short 

 and sparse ; prothorax shorter, two-fifths wider than long, distinctly and rather 

 acutely prominent at the sides near basal third, narrowed gradually thence to the 

 apex, which is slightly narrower than the base, with a small and almost imper- 

 ceptible sinus just before the prominence, the punctures fine but strong and only 

 moderately close-set ; elytra two-thirds longer than wide, evenly rounded in 

 apical two-fifths, parallel toward base, the punctures moderately fine, strongly 



