the genus Gineis. 475 
the insects fly easy to run upon, there was no difficulty in 
taking a large quantity. The amount of variation is not 
great, though the general appearance and band of the 
under side of the hind wing bring this species uncom- 
monly close to some specimens of taygete from Labrador ; 
yet I agree with W. H. Edwards in considering it distinct 
by reason of the absence of the rufous tinge, which that 
species shows on both surfaces. A few specimens of 
brucei have been taken by Mr. Bean on a mountain close 
to the Kicking Horse Pass, at about 8000 ft., but it seems 
to be comparatively rare there. It will no doubt turn 
up in other parts of the Rocky Mountains. 
CE. subhyalina.—I have had more difficulty in dealing 
with the synonymy of this species than any other, but 
after having compared the unique type of subhyalina, 
Curt., in Guénée’s collection, kindly lent me by M. 
Charles Oberthiir, the figure of crambis given by Freyer, 
the type of assimilis in the British Museum, from 
Repulse Bay, and several other specimens in the 
British Museum from various parts of Arctic America, 
as well as one from Hudson’s Straits, lent to me by 
Mr. Lyman, of Montreal, I have come to the conclusion 
that it is impossible to distinguish more than one species. 
It is true that the variation in size, colour, and distinct- 
ness of the band on the hind wing below is great, 
but not greater, or even so great, as that found in some 
other species I have already dealt with ; and, considering 
that all these supposed species occur in comparatively 
limited areas of Arctic America, which are very similar 
in point of climate, it would be more surprising if several 
species were found than only one, because there is hardly 
a case in which an essentially Arctic species like this has 
not a very wide range; this opinion is confirmed by 
Mr. J. Edwards’ examination of the clasps of some of 
the specimens differing most remarkably in appearance, 
including the type of subhyalina, in which, fortunately, 
a critical examination is possible without dissection. 
Several authors, including such good authorities as 
Moschler and Staudinger, have treated a species occur- 
ring in Labrador as semidea of Say, the typical habitat 
of which is in the White Mountains of New Hampshire. 
The latter species can be certainly distinguished from 
subhyalina, as Mr. J. Edwards has shown, by the form of 
the clasp (figs. 5, 9), and usually by the less distinctly 
TRANS. ENT. SOC. LOND. 1893.—pPaRT IV. (DEC.) 2K 
