652 Coleopterological Notices, VII. 



the eighth, and the eleventh shorter than the two preceding, the 

 head more rapidly conical behind the ej'es, which are larger and 

 separated by less than ^ of their own width, and the fifth ventral 

 with a large, deep and subangular sinus at tip. The sheath of the 

 intromittent organ has two elongate and slender apical appen- 

 dages, and the posterior margin of the third segment has a small 

 bifurcate process at the middle. 



C. oruatuiu. — Elongate, convex and subrhomboidal, alutaceous, finely 

 punctate and pubescent as usual, the head black with the portions before the 

 eyes and a small spot behind the latter, pale testaceous; prothorax blackish 

 above and beneath, the flanks testaceous, the pale area extending obliquely in- 

 ward posteriorly to the median line near the base; basal parts blackish with a 

 large semi-isolated pale spot near each angle, a small spur of blackish from the 

 under surface also showing from above at the middle of the side margin ; elytra 

 pale ochreous, the suture feebly blackish toward base; under surface blackish, 

 the mes-epimera and median parts of the abdomen pale; legs pale and colored 

 as in versicolor. Head elongate, the post-ocular portion conical, feebly impressed 

 toward the median line except toward base, and with the sides perfectly 

 straight; neck abruptly constricted, the base feebly and evenly sinuate in arc 

 to fit the anterior margin of the prothorax; eyes large but only feebly convex, 

 separated by % of their own width ; antennae pale at base, missing in the type. 

 Frothorax distinctly longer than wide, campanulate, the sides arcuately sub- 

 prominent behind the middle; apex narrow and rounded; base transverse, with 

 the sinuations broad and feeble, the angles only moderate in size, very acute 

 and strongly everted. Scutellum much wider at base than long, the sides sin- 

 uate; apex strongly rounded. Elytra barely 3 times as long as wide, between 

 }^ and }4: wider than the prothorax and about 3 times as long; humeri longi- 

 tudinally swollen, rounded, the sides thence gradually convergent and very 

 broadly sinuate to near apical third, then broadly arcuate and more convergent 

 to the apices, which are narrowly and individually rounded ; disk of each with 

 feeble traces of three fine elevated lines, feebly, longitudinally impressed 

 within the humeri. Legs long and slender, the hind tarsi fully as long as the 

 tibise. Length 10.5 mm. ; width 2.75 mm. 



Idaho (Coeur d'Alene). 



The single representative of this species is a female, the notch 

 in the apex of the fifth ventral being small, deep and rounded ; 

 it is very distinct in coloration, the peculiar pattern of pronotal 

 ornamentation not being suggested by any of the variations of 

 verszcoZor, and, in that form, the eyes are much more approximate, 

 with the sides behind them broadly and just visibly sinuate. 



