232 THE CANADIAN ENTOMOLOGIST 



not reaching the costa. There are some longitudinal series of 

 dark fuscous spots lying chiefly near the costa and dorsum. At the 

 beginning of the cilia is a white costal spot; beyond it the apical 

 portion cf the wing is dark fuscous, the fuscous shade usually 

 extending downward to the dorsum. Cilia dark with a coppery 

 lustre and "a dark fuscous line through the middle. Hind wings 

 pale gray, closely irrorated with fuscous. Legs pale gray; tibiae 

 and tarsi of the first pair and tibiae of the second pair dark fuscous ; 

 tarsal segments tipped with fuscous. Abdomen gray. 



Expanse 12.5-13.5 mm. 



Locality. — Field, B.C. 



Type and two paratypes in author's collection; one paratype 

 in the collection of the Entomological Branch, Department of 

 Agriculture, Ottawa. 



Four specim.ens bred from larvae in webs on birch (Betula 

 glandulosa), Field, B.C. Larvae were also collected on alder at 

 Glacier, B.C.-, but no moths were reared. Larvae collected in 

 August, pupated in a few days, and the moths appeared in the 

 breeding jars in April and May of the following year. 



This species differs from the European S. heroldella, also a 

 birch feeder, by the distinct coppery lustre of the cilia. 

 Xyrosaris ochroplagiata, n. sp. 



Palpi white with under surface irrorated with blackish, except 

 towards apex. Face dusted; head pure white; antennae white with 

 fuscous annulations. Thorax white slightly dusted. Base of 

 wings irrorated with fuscous-tipped scales, blackish toward costa; 

 beyond this is a pale ochreous, almost undusted area, extending 

 obliquely from costa to dorsum, and broadening toward the dorsum, 

 occupying approximately one-fourth the wing area; remainder of 

 the wing covered with more or less deeply fuscous-tipped white 

 scales, mingled with patches of whitish and ochreous. Immediately 

 following the basal ochreous area, near middle of dorsum is a small, 

 curved, white streak, margined outwardly with a patch of scales, 

 darker tipped than general over the wing. A similar dark patch 

 on ccsta opposite. A white costal spot at beginning of cilia. 

 Several rows of very minute tufts of black scales; immediately 

 below ccsta, along middle of wing, just above fold, and one or two 

 of a fourth row below fold on outer half of wing; the largest tufts 



