80 THE CANADIAN ENTOMOLOGIST. 



rufous, the basal segments of the antenna, the legs except the parts 

 named, the base of the anterior coxfe, tlie middle and posterior coxae, a 

 spot at the base of the middle femora above, the apex of the posterior femora 

 and tibiae, and the abdomen except the basal plates ; clypeus emarginate ; 

 the eyes strongly converging below ; third segment of antennae about 

 one-fourth longer than the fourth; stigma at base pale. Length, 12 mm. 



Habitat. — Franconia, New Hampshire. 



This species is nearest to ruficolor, Nort., but differs in having the 

 apex of the posterior femora black above. 



Tenthredo frigida, n. sp. — $ Black, with the following parts yellowish- 

 white : clypeus, labrum, the mandibles except tips which are rufous, 

 cheeks, tegular, collar, a spot above anterior coxte, a line on pleurje, a 

 spot above posterior coxa?, a narrow margin to the sides of the basal 

 plates, the prosternum, the pectus, the anterior coxaj, the anterior 

 trochanters, and femora except a black line above ; remainder of legs 

 rufous except a black line above on the middle femora and the pos- 

 terior trochanters and a black spot at the base of the posterior femora 

 above, and the apices of the segments of the posterior tarsi black ; 

 the abdomen except the basal half of the first segment, rufous ; 

 costa rufous, stigma black ; veins black ; clypeus emarginate ; third seg- 

 ment of the antennai one-third longer than fourth; front deeply hollowed 

 out between the eyes ; eyes strongly converging below. Length, 10 mm. 



Habitat. — Mount Washington, New • Hampshire (Mrs. Slosson) ; 

 Olympia, Washington (Trevor Kincaid). 



This species is related to rubella, Cress , but differs in having the 

 four anterior femora with a black line above. 



Tenthredo pallicola, n. sp. — 9 Black, with the following parts yel- 

 lowish-white: the labrum, clypeus, the mandibles, the cheeks as far as the 

 middle of the eye, the front below the antenna, a narrow margin on the 

 inner side of the eye as far as their posterior margin, the collar, tegula?, 

 a broad oblique band on the pleuras, the ventral margin of the pronotum, 

 the posternum, the pectus at middle, a spot above the posterior coxa^, alj 

 the coxae and trochanters, the basal half of the anterior femora, and the 

 middle and posterior femora at base ; the following parts are rufous : the 

 remainder of the anterior and middle femora, tibiae, and tarsi, the pos- 

 terior femora and tibiae at middle, the apical segment of the posterior 

 tarsi, and the abdomen beyond the basal plates, except the sheaths 



