22 MEMOIRS ON THE COLEOPTERA 



foveae very deep, moderate in size, lineate at the bottom, close to 

 the rather short carina as usual in this section; basal angles slightly 

 obtuse but very sharp; elytra not quite one-half longer than wide, 

 two-fifths wider than the prothorax, gradually rounding behind, 

 with distinctly arcuate sides; first two striae evident but feebly im- 

 pressed, the external all obsolete, the small foveae at apical, and 

 before basal, third. Length (9) 3.2-3.5 mm.; width 1.2-1.45 mm. 

 British Columbia (Metlakatla), Keen. Three specimens. 



brumale n. sp. 



Head similarly small, form more elongate, the color and lustre similar; 

 legs deep black; antennae black, three-fourths as long as the elytra, 

 the medial joints two-thirds longer than wide, not quite as thick as 

 in vacivum; palpi deep black; head three-fourths as wide as the pro- 

 thorax, the eyes very moderate; prothorax two-fifths wider than 

 long, in general configuration and character as in the preceding, but 

 with the oblique sides straight; elytra fully one-half longer than 

 wide, strongly rounded behind, parallel, with rather distinctly arcu- 

 ate sides; four or five striae visible, the outer very faint, the sutural 

 distinctly impressed; small dorsal foveae near basal fourth and apical 

 third, confluent with the third stria as usual. Length (cf 9 ) 3-6- 

 3.9 mm.; width 1.3-1.5 mm. Colorado (Boulder Co.). Eleven 

 examples probatum n. sp. 



Head well developed, about equal in width to an elytron. Form nar- 

 row and elongate, colored and with polished lustre as in all the 

 preceding species, the legs piceous-bl'ack; antennae (cf) very thick, 

 filiform, three-fourths as long as the elytra, the medial joints 

 barely over one-half longer than wide, deep black throughout, the 

 palpi black as usual; head nearly four-fifths as wide as the prothorax, 

 the eyes very moderate, the sulci sharply excavated; prothorax 

 about two-fifths wider than long, in general conformation as in the 

 preceding species, the carinae only moderate in length; elytra oblong- 

 oval, strongly rounded behind, more than one-half longer than wide, 

 widest rather behind the middle, the sides broadly arcuate as usual; 

 striae distinct toward the suture, the sutural not very deep, the small 

 foveae rather distinct from the third stria, at basal and apical 

 third. Length (cf) 3.65 mm.; width 1.35 mm. British Columbia 

 (Skeena River at Terrace), Keen vacivum n. sp. 



10 Head moderate, scarcely as wide as an elytron; body oblong, deep 

 black and highly polished; legs black, the coxae piceous; antennae 

 deep black throughout, rather short, three-fourths as long as the 

 elytra, the medial joints not quite twice as long as wide; palpi mod- 

 erate, deep black; head three-fourths as wide as the prothorax, the 

 latter about one-half wider than long, just visibly wider at base 

 than apex, the sides very broadly rounded from apex to the slightly 

 prominent basal angles; surface broadly convex, nearly as in the 

 preceding species but with the large basal foveae not quite so deep; 

 elytra oblong-oval, barely one-half longer than wide, not quite one- 

 half wider than the prothorax, rounding strongly behind in about 

 two-fifths; striae fine and feeble, not quite entire, barely traceable 

 on the flanks, the eighth deep as usual, the minute punctures of the 



