276 THE CA.NADIAN ENTOMOLOGIST. 



difference in size and form between its first two joints, both fully 

 twice as wide as long, the last joint gradually pointed, but little wider 

 than the tenth and as long as the four preceding combined ; body 

 dark testaceous, polished, the head nearly as wide as the prothorax, 

 the lateral teeth of the latter strong, broadly angulate ; elytra and 

 abdomen nearly SiS m b?'evipennis. Length, 1.7 mm; width, 0.63 

 mm. California (Humboldt Co.) ciirtipennis^ n. sp. 



Last two joints of the antennal funicle not materially shorter or 

 more transverse than the preceding ; antennal club relatively still 

 more slender but with the joints rather more rapidly increasing in 

 size, the ninth and tenth differing more markedly in size and not so 

 transverse ; body nearly similar, though darker in colour, the elytra 

 sometimes brighter and rufescent, the lustre shining ; punctuation 

 rather more evident ; head a little smaller, more distinctly narrower 

 than the prolhorax ; hind body similar though very slightly less 

 inflated, the entire outline rather more slender than in curtipennis. 

 Length, 1.7 mm.; width, 0.6 mm. California (San Francisco and 

 Marin Co's.) casia?ieics, n. sp. 



12. Elytra evidently shorter than wide 13 



Elytra as long as wide ; form slender 14 



13. Moderately stout, rather convex, shining, dark testaceous, the pubes- 



cence rather long and distinct; head of the usual form and structure, 

 the antenuEe stout apically, the ninth and tenth joints twice as wide 

 as long, the last stout and rather longer than the preceding three ; 

 prothorax slightly wider than the head, of the usual form and sculp- 

 ture, the punctures strong and evident, though not dense ; lateral 

 teeth small but distinct and spiniform ; elytra with rounded sides, 

 which are more converging and rounded basally, the humeral callus 

 moderate ; striae as usual ; surface minutely, sparsely punctulate ; 

 abdomen not quite as long or wide as the elytra, the basal impression 

 wider than usual, more than half the total width. Male with the 

 fourth dorsal broadly concave, impunctate and glabrous, the surface 

 gradually curved posteriorly above and subacute, so that its 

 reverse side appears from above as a pronounced tooth behind the 

 broadly and feebly parabolic hind margin of the third segment, which 

 is herissate with longer dense hairs, the acute upper tip of the fourth 

 is also tufted with very short fine and dense hairs. Length, 1.7 mm.; 

 width, 0.63 mm. California (Sta. Cruz Co.) basalts, n. sp. 



