3O MEMOIRS ON THE COLEOPTERA 



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

 prothorax two-fifths (cf) to two-thirds (9) wider than long, much 

 wider at base than apex, the sides subprominently rounded before 

 the middle, oblique and broadly, feebly sinuate behind, the angles 

 right and sharp; surface with deep and broadly impressed abbrevi- 

 ated median stria and strongly reflexed lateral edges, the basal foveae 

 very large, rugulose, acute and deep centrally, the carina long and 

 conspicuous; elytra oblong-oval, two-fifths longer than wide, one- 

 half wider than the prothorax, the sides evenly and rather strongly 

 arcuate; two striae and a third, partially, fine and feebly impressed, 

 are visible suturally, generally subentire; foveae conspicuous, irreg- 

 ular and impressed, at two-fifths and behind two-thirds. Length 

 (d* 9 ) 4.2-4.6 mm.; width 1.75-2.0 mm. California (Lake Tahoe). 



testatum n. sp. 



Body oblong-oval, smaller and much less inflated, shining, rufo-piceous, 

 the elytra clearer rufous; under surface and legs pale red-brown; 

 head nearly four-fifths as wide as the prothorax and fully as wide as 

 an elytron, the sulci moderate, the ocular puncture isolated; antennae 

 dark, piceous-black throughout, thick, three-fourths as long as the 

 elytra, the medial joints not quite twice as long as wide; prothorax 

 one-half wider than long, the sides broadly arcuate, oblique and 

 broadly, feebly sinuate behind, the angles more than right but sharp; 

 side margins rather narrowly reflexed; surface convex, the stria 

 rather fine; foveae at lateral fourth, rather small and deep; base 

 punctulate, barely visibly wider than the apex; elytra convex, barely 

 one-half longer than wide, not quite one-half wider than the pro- 

 thorax, parabolically rounding behind in fully two-fifths, the sides 

 moderately arcuate; two to three sutural striae are feebly impressed 

 and closely micro-punctulate, none except the sutural entire; foveae 

 small, at one-third and three-fifths; both anterior legs are missing 

 in the type. Length 3.7 mm.; width 1.45 mm. British Columbia 



(Metlakatla), Keen nescium n. sp. 



29 Legs black or blackish 30 



Legs rufous throughout 35 



30 Form more narrowly oblong, the prothorax very much more than 



half as wide as the elytra 31 



Form more ventricose, the prothorax only more or less slightly over half 



as wide as the elytra 32 



31 Black, polished, with very faint bronze lustre, the legs deep black; 

 head nearly as in ftmereum, three-fourths as wide as the prothorax, 

 but subequa! in width to an elytron, the antennae black and not quite 

 as long as the elytra, the medial joints more than twice as long as 

 wide; prothorax one-half wider than long, rather strongly rounded 

 at the sides, which become sinuate basally and parallel for some dis- 

 tance before the base, the angles very sharp, somewhat 'prominent, 

 rather more than right owing to the usual obliquity of the sides of 

 the base; side margins moderately reflexed, very finely so apically, 

 the stria deep, not attaining the apex, the foveae large, shallow, 

 feebly rugose, rather briefly and linearly impressed at the bottom, 

 the carina moderately long; elytra one-half longer than wide, three- 



