128 Memoirs on the Coleoptera 



similar; antennae piceous, gradually testaceous basally; prothorax 

 as wide as long, nearly as in lutulentus throughout but relatively 

 smaller, the apex less sinuate and the basal angles not quite so 

 broadly rounded; elytra relatively wider, twice as wide as the 

 prothorax, oblong-oval, the sides more arcuate; striae similarly 

 very fine but more impressed and, toward the sides, tending more 

 to micro-disintegration; intervals slightly convex, except laterally, 

 the four punctures of the third larger than in any of the preceding 

 related forms; tarsi very slender but shorter than in the preceding. 

 Length (9) 5.8 mm.; width 2.25 mm. Massachusetts. 



atriceps n. sp. 



5 — Elytral striae distinctly impressed, the intervals convex. Rather 

 stout, somewhat convex, polished, black, the elytra seldom with 

 trace of picescence; legs obscure rufous; head slightly elongate, 

 much narrower than the prothorax, the eyes very moderately 

 convex; antennae slender, half as long as the body, blackish, the 

 basal joint only slightly less so; prothorax very nearly as long as 

 wide, widest near the middle, the well rounded sides less arcuate 

 and more oblique basally, the angles broadly rounded; base not 

 quite as wide as the rather deeply sinuate apex; margins distinctly 

 reflexed, more broadly so basally; surface with feeble transverse 

 rugulae, the impressions feeble; foveae rather long, deeply impressed, 

 smooth, distinct in basal two-fifths; elytra shorter and broader 

 than usual, scarcely one-half longer than wide, three-fourths wider 

 than the prothorax, feebly inflated posteriorly; sides not very 

 rapidly rounding at base; apex gradually broadly rounded, the 

 sinus small and feeble; striae notably impressed, smooth; intervals 

 convex, less strongly in the female, the third with five punctures; 

 anterior male tarsi feebly though distinctly dilated; met-episterna 

 less than one-half longer than wide. Length (cf 9) 7.8-8.2 mm.; 

 width 2.6-2.8 mm. New York (Lake George), — Prof. Kemp. 

 Seven examples retractus Lee. 



Elytral striae finely grooved as a rule, the intervals flatter, sometimes 

 feebly convex 6 



6 — Sides of the elytra barely at all more arcuate basally. Body small, 

 shining, rather convex, piceous-black, the pronotum piceous, the 

 legs, epipleura and entire elytra bright testaceous; head deep black, 

 only slightly longer than wide, fully two-thirds as wide as the pro- 

 thorax, the eyes large but only slightly prominent; antennae only 

 moderately slender, three-fifths as long as the body, fusco-testaceous, 

 the three or four basal joints clearer; prothorax very nearly as 

 long as wide, with parallel and almost evenly arcuate, moderately 

 reflexed sides, somewhat more reflexed basally, the angles very 

 broadly rounded; apex feebly sinuate, barely broader than the base; 

 surface smooth, the stria fine, impressed; foveae sublinear but 

 broadly and extremely feebly impressed; elytra short, scarcely 

 one-half longer than wide, four-fifths wider than the prothorax, 

 rather inflated posteriorly and gradually narrowed basally; apex 

 obtusely rounded, the sinus feeble; striae not very fine, smooth, 

 distinctly impressed, the intervals feebly convex, the third with about 



