476 Messrs. Elwes and Edwards on 
defined band of the hind wing below; but I have no Labra- 
dor specimens in my collection of true semidea, though 
one lent me by Mr. Lyman, from Hudson Strait, is proved 
bythe clasp-form to be that species, and it therefore doubt- 
less occurs in Labrador as well. Subhyalina appears to 
be commonest in Labrador and Newfoundland, whence 
I have seen very large specimens in Mr. Godman’s col- 
lection. It may also be distinguished from semidea by 
the more rufous tinge of the fore wing below, and by the 
almost invariable presence of some white spots, rarely 
amounting to ocelli, on the under side. The clasps and 
tegumen of this species are figured by Aurivillius in the 
plate to his paper on the Lepidoptera of the Vega Expe- 
dition ; his fig. 6, that of the parts seen from above, is 
recognisable, but fig. 5, that of the parts seen from the 
side, is not satisfactory, because the drawing is too 
small to allow a proper expression of the character of 
the clasp ; the contour of the latter is well enough, but 
its apex is represented as simply acuminate. 
CE. beanii, n. 8. 
g. Wings subdiaphanous, very sparsely scaled. Upper side 
uniform rather pale smoky brown; costa, from the base, very 
narrowly pale grey, mottled with black; sex-mark present but 
indistinct. Under side: fore wing as above, but with costa 
narrowly, and the tip broadly, pale grey, mottled with blackish 
brown. Hind wing pale grey, closely mottled with blackish brown, 
the general direction of the dark markings being from the costa to 
the inner margin; fringes chequered. Entire clothing of the palpi 
blackish. Clasp of the semidea type. 
@. Similar but slightly larger. The hind tibie thickened and 
curved inwards at the apex; the basal joint of hind tarsi dilated 
and laterally compressed. Exp. fj 46mm., ? 52mm. 
This very distinct species is most nearly allied to 
(. semidea, from which it is easily distinguished by the 
blackish (instead of white) upper fringe of the palpi, the 
smoky colour of the upper side, and the absence of any 
tendency to the formation of a dark band on the under 
side of the hind wing. The modification of the hind 
tibia is a structural character, which will also dis- 
tinguish this species from any of its allies, though we 
have hitherto critically examined a single female only. 
