16 
Material Examined 
No. of 
Geol. Surv. 
spec. 
Locality 
Collector 
Date 
Cat. No. 
1 
Kananaskis, Alberta 
J. Macoun 
1885 
2917 
The specimen is fully as large as Glacier Park calif ornicum, but is light- 
er in colour, the striae are finer, it has a full half whorl more (4^), the whorls 
are much narrower, especially as seen from, the base, and the umbilicus 
is conspicuously wider and more funnel-shaped. Specimens of Pygmceum 
from Unity, Maine, are in more complete accord, but have rather coarser 
sculpture, a half whorl less, and are only about two-thirds as large. Some 
Ohio pygmceum at hand are even smaller than the Maine ones, are much 
flatter than the Albertan shell, and have nothing like so tremendous an 
umbilicus, but to judge from the measurements of specimens of this species 
given by Walker and others, both these last two lots may be below the 
average in size. The habitat is very far removed from the nearest prior 
record of pygmceum , and it may be that the peculiarities noted, if borne 
out in further material, are sufficient to justify some manner of separate 
recognition for the race. The specimen was previously examined by Dr. 
Sterki who determined it to be P. pygmceum. Its more important measure- 
ments are: 
Major diameter 1-6 mm. 
Lesser diameter 1-4 “ 
Altitude 1-0 “ 
Diameter umbilicus 0-48 “ 
Succinea avara Say 1824 
1824. Succinea avara Say,- — App, Long Exped., p. 260, pi. 15, f. 6. 
1885. Succinea avara Binney, — Man. Am. Landsh., pp. 31-33, 36,59, 337, 
339, 497, f. 366, 369. 
1893. Succinea avara Taylor, — Nautilus, vol, 7, p. 86 (recorded from 
Laggan, Alberta). 
1895. Succinea avara Taylor, — Ottaw’a Nat., vol. 9, pp. 176, 177 (recorded' 
from near Macleod and Little Bow river, Alberta). 
1906. Succinea avara Vanatta, — Nautilus, vol. 20, p. 95 (recorded from 
Field, B.C.). 
Material Examined 
No. of 
spec. 
Locality 
Collector 
Date 
Geol. Surv. 
Cat. No. 
6 
Swamp, Kananaskis, Alberta 
J. Macoun 
1885 
2938 
1 
Mossy marsh. North Fork Oldman 
river, Alberta 
J. B. Tyrrell 
Aug. 10, 1883.... 
2883 
