THE CANADIAN ENTOMOLOGIST. H)7 



Male. — Antennae with joints 5-7 thickened, obovate, evidently longer 

 than wide ; 8-10 smaller, mutually similar, slightly elongate, and subequal 

 to, though slightly thicker than, the fourth. Pygidium rounded at apex, 

 the tip feebly subsinuate ; last ventral broadly, rather deeply impresso- 

 emarginate, the limiting angles prominent and somewhat deflexed. 



Female. — Antennae shorter, not passing the base of the elytra, 

 gradually incrassate, last ventral not emarginate. 



Described from a series of 9 $ 's and 2 $ ; s, taken at an elevation of 

 2,750 feet in Siskiyou Co., California, by Dr. F. E. Blaisdell, to whom it 

 gives me pleasure to dedicate the species. 



The present species is closely allied to lugubris, Ulke ( Utkei, 

 Beaureg), differing in the strongly shining head and thorax, and in the 

 genitalia. In lugubris the thorax, is relatively smaller, and it and the head 

 are as dull in lustre as the elytra. 



Atithonomus tridens, sp. nov. — Short, oblong, rufous, beak in great 

 part, and legs, except anterior thighs, testaceous; vestiture moderately 

 dense, consisting of small elongate scales varying in colour from whitish 

 through ochreous-brown to fuscous. Beak as long as the head and 

 thorax, sparsely pubescent, feebly punctate, striate, tip nearly smooth. 

 Antennae slender, pale throughout, inserted one-third from the tip, scape 

 nearly reaching the eye, joints all elongate, second equal to the two 

 following, third slightly longer than the fourth. Head coarsely punctate 

 and scaly, front a little concave, somewhat narrower than the width of the 

 beak, eyes prominent, convex. Prothorax scarcely one-half wider than 

 long, sides parallel and broadly rounded in basal half, strongly rounded 

 and moderately constricted in front ; apex half as wide as base, surface 

 densely, strongly punctate, with dorsal and infero-lateral vitae of broader 

 whitish scales, between which the scales are narrower, sparser and 

 ochreous in colour. Elytra nearly one-half wider than the pro- 

 thorax, sides parallel to apical third, tip conjointly rounded, concealing 

 the pygidium ; scales smaller and denser than on the prothorax, generally 

 pale in colour; each elytron with three somewhat broken bands, consisting 

 of spots of fuscous scales more prominent on alternate intervals, the first 

 running inward from the humerus to the suture, the other two converging 

 from the sides so as to enclose that area, which is subdenuded in signatus 

 and other allied species ; striae well impressed, intervals moderately 

 convex and feebly tuberculate beneath the dark spots in the basal region. 

 Beneath clothed with yellowish-white scales, abdomen pubescent, second 

 segment longer than the third, which is very slightly longer than the fourth 



