MATERIALS FOR A FAUNA CANADENSIS. 497 



joint yellow, with snow-wbite hair ; head and thorax yellow, with 

 snow white hair ; palpi and abdomen yellow ; feet snow-white ; an- 

 terior wings snow-wbite, with some transverse luteous bands, the 

 apical ones maculose, imperfect ; at the apex of the posterior margin 

 are four black spots and some obsolete black streaks; posterior wings 

 snow-white. Length 8-13 millim. ; alar expanse 15-25 raillim. 

 St. Lawrence Eiver, Canada; "Washington ; Georgia. 



S. NiVEA, Hagen. — Brownish-black, with snow-white hair ; an- 

 tennae snow-white, the lower part annulated with fuscous, the basal 

 joint yellow, with snow-white hair ; head yellow, the disk brownish- 

 black, with snow-white hair; thorax brownish-black, with snow- 

 white hair ; palpi and feet pale ; abdomen luteous ; anterior wings 

 snow-white, with fuscous veins, at the apex transversely obsoletely 

 clouded; posterior wings snow-white. Length 15 millim. ; alar ex- 

 panse 28 millim. 



St. Lawrence Eiver, Canada. 



S. EESUBGENS, Walker. — Fuscous with whitish hair ; palpi and 

 feet fulvous, sprinkled with whitish hair ; anterior wings fuscous, 

 with white spots at the base and at the disk and apex of the apical 

 areoles ; posterior wings cinereous. Length 16 millim. ; alar ex- 

 panse 30 millim. 



St. Martin's Falls, Albany River, Hudson's Bay (Barnston.) 



S. ALBiDA, Walker. — Fuscous, with whitish hair ; lower part of 

 the antennae annulated with white ; palpi testaceous ; feet whitish ; 

 wings whitish, with testaceous veins. Length 13 millim.; alar ex- 

 panse 25 millim. 



St. Martin's Falls, Albany River, Hudson's Bay (Barnston.) 



8. INJUSTA, Hagen. — Luteous, with luteous hair ; antennae lute- 

 ous, subannulated with fuscous ; palpi with luteo-fuscous pile ; feet 

 and abdomen pale luteous ; anterior wings luteous, with ochreous 

 pile and cilia, the anterior margin a little obscurer at the base ; the 

 anal angle a little fuscous and ciliated with fuscous hair ; posterior 

 wings luteous, with pale cilia. Length 12 millim. ; alar expanse 

 23 millim. 



St. Lawrence River, Canada ; Chicago. 



S. iMMOBiLis, Hagen. — Fuscous with luteous hair ; antennae fus- 

 cous, the basal joint luteous ; palpi with fuscous hair; head and 

 thorax fuscous ; feet luteous ; abdomen fuscc-luteous ; anterior wings 



