6 
Limitaris has had rather a checkered history in the literature, as the 
synonymy shows, but it is a characteristic Oreohelix, and its near connex- 
ion with the widespread coopm'-series seems self-evident. Within this 
series, the 0. c. apiarium, recently described (Berry 1919, p. 198) from the 
Pacific side of the divide in Glacier National park, not many miles 
south of the type locality of limitaris , is easily the nearest of the named 
subspecies. The two are in fact very close, and it is entirely possible that 
the investigation of material from a wider range of localities may show that 
it is impracticable to draw any arbitary line between them. The lots so 
far seen, however, are readily separable upon grounds already outlined in 
a former publication. 1 
Oreohelix cooperi (W. G. Binney), vars. 
Material Examined 
No. of 
spec. 
Locality 
Collector 
Date 
Geol. Surv. 
Cat. No. 
1 
Moyie, B.C. 
W. Brodie 
July 27, 1916... 
“ 14, 1883... 
3034 
4 
Elk river, Crowsnest pass, B.C 
J. B. Tyrrell 
2880 
3 
Wigwam river. East Kootenay dist., 
B.C 
J. B. Tyrrell 
" 28, 1883... 
2879 
The three miscellaneous lots of Oreohelix here listed are all plainly 
referable to the general cooperi concourse, but it is doubtful whether the 
discovery of more complete material will show all to be referable to the 
same subspecies. The three specimens from Wigwam river in particular 
have an aspect all their own, but as only one of the three is a reasonably 
fresh shell, it appears inadvisable further to encumber the literature in 
their behalf. The Moyie shell is altogether different, resembling some of 
the shells from the writer’s Station V on the east side of the divide in Glacier 
National park, Montana, more than it does any other race of cooperi of 
which the writer is cognizant. 
Oreohelix strigosa canadica new subspecies 
Plate I, figures 6-7 
Description . The shell is of moderate size, broadly conical, with an obtuse 
apex. The surface is rather strongly satiny , but roughened by the irregular, 
coarse, and very crowded lines of growth. Spiral sculpture is represented 
by a few obscure and intermittent traces on the upper surface of the whorls, 
becoming wholly obsolete below. The periphery is strongly subangular, 
quite acutely so up to the body whorl, but becoming more obtuse near the 
aperture. The umbilicus is wide and well-like, contained about six times 
in the diameter of the shell, its interior visible to the apex, and its circular 
outline but little discommoded by the slight reflection of the inner lip. 
The outer lip is thickened and bevelled a little, but not reflexed. 
i Op. cit., p. 201. 
