226 MEMOIRS ON THE COLEOPTERA 



Length (9) 6.8 mm.; width 2.5 mm. California (Siskiyou Co.), 

 Koebele brevicornis n. sp. 



13 Antennae longer, the third joint about three times as long as wide. 

 Body larger, more shining, much less punctate anteriorly than usual, 

 the vestiture short and sparse, moderately coarse on the elytra, 

 longer, finer, fuscous and bristling on the prothorax; head polished 

 and with rather small but deep punctures, separated by nearly twice 

 their diameters, the eyes rather prominent; prothorax about as long 

 as wide, very much narrowed and with an unusually deep constric- 

 tion at apex, feebly, broadly and roundly tumid at the sides, the 

 punctures fine, deep and sparse; elytra parallel, more than three- 

 fourths longer than wide, not quite twice as wide as the prothorax, 

 arcuately narrowing in not quite apical third to the transverse apex; 

 punctures rather small but deep and perforate, everywhere well 

 separated, becoming very fine and feeble apically; abdomen feebly 

 and not unusually sparsely punctulate, the fifth ventral in the present 

 assumed type short. Length (9) 9-8 mm.; width 3.4 mm. Cali- 

 fornia, (probably from the vicinity of San Francisco Bay). Levette 



subcyanea Lee. 



Antennae shorter and relatively thicker as usual, the third and fourth 

 joints about twice as long as wide; size smaller 14 



14 Form moderately stout ( 9 ), or narrower and with the elytra strongly 

 tapering (d 71 ), strongly convex and shining; vestiture rather long, 

 coarse and bristling, cinereous, darker, finer and more elongate- 

 hispid on the prothorax as usual; head with rather small but strong 

 and close-set but distinct punctures, the eyes moderately prominent; 

 antennae extending slightly behind the middle of the elytra (cf ), a 

 little shorter ( 9 ) ; prothorax about as long as wide, moderately 

 narrowed and constricted at apex, barely perceptibly and very 

 broadly tumid at the sides before the middle, finely but deeply, 

 sparsely punctate; elytra three times as long as the prothorax and 

 one-half to two-thirds wider, arcuately narrowing in about apical 

 third to the rather narrowly rounded apex, the punctures rather 

 coarse, deep, well separated, smaller but still rather strong apically; 

 color of the elytra throughout either intense blue-green, sometimes 

 faintly violaceous, or pale red-brown; abdomen less shining, unusually 

 densely punctulate. Length (cf 9 ) 5.8-8.0 mm.; width 2.25-2.9 

 mm. California (Trinity River in the Hoopa Valley, Humboldt 

 Co.). Abundant trinitatis n. sp. 



Form nearly similar but a little stouter and rather less convex and shining, 

 the coarse bristling vestiture similarly cinereous on the elytra and 

 under surface, but little darker anteriorly; head with moderate 

 dense punctures, which are in mutual contact or very nearly, the 

 eyes rather prominent; antennae nearly as in the preceding; prothorax 

 distinctly shorter than wide, moderately narrowed and deeply 

 constricted at apex, the ante-median tumidity at the sides broad and 

 feeble; punctures small but strong, moderately separated; scutellum 

 densely cinereo-pubescent; elytra nearly as in trinitatis in both sexes 

 though relatively a little shorter and broader, the punctures well 

 separated but less coarse and, toward tip, becoming very fine and 



