66 Memoirs on the Coleoptera 



rounded sides becoming oblique and straight posteriad, finely 

 reflexed anteriad, much more so basally, the angles obtuse, with 

 narrowly blunt tips; base broadly arcuate, fully as wide as the 

 shallowly sinuate apex; surface rather depressed, with very fine 

 faint rugulae, the anterior impression fine, deep, angulate, the stria 

 short, somewhat deeply impressed; foveae large, shallow, broadly 

 impressed, not anteriorly prolonged; elytra three-fifths longer than 

 wide, three-fourths wider than the prothorax, slightly inflated 

 behind, the humeri not very rapidly rounded; apex rather obtusely 

 rounded, with long and scarcely more than rectilinear sinus; striae 

 extremely fine, similar at the sides; intervals almost fiat, shining; 

 scutellar stria shorter than usual; anterior male tarsi slender, 

 extremely feebly dilated. Length (cf) 6.3 mm.; width 2.4 mm. 



British Columbia (Stikine River), — Wickham lascivus n. sp. 



Upper surface in coloration and shining lustre almost as in lascivus, 

 beneath more blackish posteriorly, the legs testaceous; head even 

 shorter, scarcely as long as wide, fully four-fifths as wide as the 

 prothorax, with rather large and prominent eyes, the impressions 

 small and feeble; palpi with the last joint longer than the third, not 

 so inflated medially as in the preceding, slender; antennae longer 

 and rather more slender, fusco-testaceous, clearer basally, three- 

 fifths as long as the body, the medial joints somewhat more than 

 three times as long as wide, the third and fourth equal; prothorax 

 not so short though nearly a third wider than long, the apex not 

 sinuate but feebly sinuato-truncate, as wide as the feebly arcuate 

 base; sides broadly and more feebly arcuate, but becoming broadly 

 and feebly sinuate posteriorly, finely reflexed, a little more so at 

 base and less gradually than in lascivus, the angles much more 

 distinct, only a little more than right, with well marked and scarcely 

 even blunt tips; surface nearly similar but smoother and with deeper 

 posterior impression, the anterior deep; fovese nearly similar but 

 longer, extending almost to the middle; elytra very much shorter, 

 not a third longer than wide, four-fifths wider than the prothorax, 

 more rapidly obtuse at apex and with more rapidly rounding humeri, 

 the apical sinus similar; striae not quite so fine and distinctly im- 

 pressed, the intervals convex internally; scutellar stria similarly 

 short; anterior male tarsi rather thick and much more strongly 

 dilated; hind tarsi not so long. Length (cf) 5-8 mm.; width 2.35 

 mm. British Columbia (Stikine River), — Wickham. 



frigidulus n. sp. 

 Upper surface rather more convex; body broader in form, polished, 

 piceous-black, the anterior parts with the merest trace of viridate 

 lustre; under surface black, the epipleura and legs rufous; head not 

 elongate, three-fourths as wide as the prothorax, with moderate 

 though notably prominent eyes; last palpal joint much longer than 

 the third; antennae slender, slightly over half as long as the body, 

 fuscous, the basal joint rufous, the third and fourth exactly equal; 

 prothorax larger than in the two preceding, a third wider than 

 long, widest and more abruptly and strongly rounded at the sides 

 before the middle, the sides oblique and broadly, feebly sinuate in 



