214 MEMOIRS ON THE COLEOPTERA 



Last dorsal (9 ) long and relatively more parallel, rapidly and obtusely 

 rounding at the apex and broadly, very faintly and gradually 

 sinuate medially; body larger and much stouter than in any of the 

 preceding species of this group, black, the abdomen black, the last 

 three segments dark and obscure rufous; elytra throughout brightei 

 rufous, the sutural and the lateral double beading, as well as the 

 extreme apices, black; vestiture inconspicuous, golden, unusually 

 short; legs black throughout; head very densely, rugosely sculptured 

 and dull, the eyes small: antennae ( 9 ) short and slender, deep black 

 throughout, but little more than half as long as the body, of the 

 usual structure; prothorax large, a little longer than wide, strongly 

 biconstricted, the median obtuse prominences conspicuous; punc- 

 tures small and close but with polished interspaces; elytra about 

 twice as long as wide, tapering, the larger punctures, scattered 

 among the very fine dense punctulation, smallei than usual; pu- 

 bescence rather sparse and very inconspicuous but arranged as in 

 aiireatus and allies; legs long and very slender. Length (9) 14.5 

 mm.; width 4. 8 mm. Oregon (Clackamas Co.) . . .oregonensis n. sp. 



" Black; head and thorax lanate; venter and elytra testaceous, the latter 

 entire. Length 12 mm.; width 3 mm. Oregon.". . . .vestitus Hald. 



12 Color testaceous, extremely minutely pubescent; head fuscous; 

 prothorax not at all longer than wide, bisinuate at the sides, the 

 lateral tubercle feebler than usual and obtusely rounded, the 

 surface convex, moderately constricted anteriorly and posteriorly, 

 vaguely canaliculate; elytra slightly punctulate, almost parallel, 

 the apex rounded; eyes small but rather convex, finely faceted; 

 antennae with the third and fifth joints equal, the fourth two-thirds 

 as long; the head is feebly narrowed behind but not rounded on 

 the sides. Length (9 ?) 15.0 mm. Yellowstone Basin. 



obtusus Lee. 



Color deep black throughout, except the elytra, which are very pale 

 luteo-albid, the suture and a lateral vitta at the upper part of the 

 flanks black, the elytral apex and also the abdomen black; head 

 very densely punctato-scabrous, with rather long and coarse but 

 not dense hairs, fusco-cinereous in color, the eyes small and but 

 feebly prominent, the sides behind them short, converging and 

 evenly though feebly arcuate; antennae (cf ) rather heavy, as long 

 as the body, the third joint much longer than the fifth; prothorax 

 shorter than in any other species, not as long as wide, almost as 

 wide at the feebly arcuate apex as at base, rather deeply bisinuate 

 at the sides, with the tubercle strong though very obtuse and broadly 

 rounded; apical dorsal constriction broad and shallow, the basal 

 deeper and more angulate, the median line barely at all impressed; 

 punctures fine, close, the pubescence as on the head, not concealing 

 the sculpture; elytra not quite one-half wider than the prothorax and 

 fully four times as long, rapidly tapering from the prominently 

 rounded humeri to the apex, finely, feebly and not densely punctate 

 and with very small and rather sparse, evenly distributed and very 

 inconspicuous hairs. Length (cf ) 1 1.8-12.0 mm. ; width 3.5-3.7 mm. 

 Washington State brevicollis n. sp. 



