168 Journal New York Ent. Soc, [Voi. ii. 



Size 30 mm. or less mustelinus. 



Size more than 30 mm. ...... gracilis. 



No white m^rks, bands smolcy roseicaput. 



No such oblique band. 



Transverse rows of whitish spots, dusky bordered . . . lembertii. 

 Transverse bands partly silvery white. 



Silver spots well fused, especially in outer band . . sequoiolus. 



Silver spots smaller, nearly separate or reduced . . behrensii. 



No silvery marks on wings. 



Size rather large (35 — 55 mm.) ..... inontanus. 

 Size small (less than 30 mm.) 



No red marks; color ocherous or partly stone color . hectoides. 

 With traces of transverse bands marked with bright red var. lenzi. 



H. ganna Hllbner. 



1804? — Boinliyx ganna Huebner, Eur. Schmett. Bomb., f. 215. 



1884 — J7^/>/ii/us con/usus Hy.Edwakds, Papilio, Vol. IV, p. 122. 



1S86 — Hepialus vic-glashani Hy. Edwards. Ent. Amer., Vol. II, p. 14. 



var. hyperboreus M'Oschlcr. 



1862 — Epialus liyperboretis Moeschler, Wien. Ent. Mon., Vol. VI, p. 129. 

 1864 — Hepialus pukher QxKoiv., Proc. Ent. Soc. Phil , Vol. Ill, p. 522. 



var. matthewi Hy. Edwards. ' 



1874 — ILpialus ?na/thinvi Hv. Edwards, Proc. Cal. Acad., Vol. V. p. 265. 



Ground color yellowish brown, dark brown [hyperboreus) or pale 

 yellowish brown with orange tints {jnattJiewi\ with irregtilar silvery 

 bands on primaries. These consist of a band which starts at base, 

 runs to costal third, then to internal margin before internal angle 

 and thence to apex ; it is angular and furnished with irregular 

 projections, sometimes broken into spots or partly absent. A 

 discal spot, one on basal third of internal margin and some marks 

 on middle of outer margin, all of which may be more or less reduced 

 or absent. Secondaries blackish, paler along costa and outer 

 margin. Expanse, 25-35 '''^"^• 



Habitat., Arctic and mountainous regions of Europe and North 

 America. 

 H. mustelinus ^'(/r/'a/v/. 



1864 — Hepialus mustelinus Pack.vrd, Proc. Ent. Soc. Phil., Vol. Ill, p. 393. 



1864 — Hepialus lahradoriensis PACKARD, Proc. Ent. Soc. Phil., Vol. Ill, p. 394. 



Brown ; primaries faintly mottled with paler brown with a 

 whitish somewhat irregularly outlined band along internal margin 

 and reaching from before internal angle to apex ; above it, along 

 the margin, a black shade. Expanse, 27 mm. 



Habitat, Labrador. 



