104 ROYAL SOCIETY OF CANADA 
Ostrea glabra, Meek. 1876. Rep. U. S. Geol. Surv. Terr., vol. ix., p. 521, pl. 40, 
figs. 6, a-e. 
“s * White. 1883. Rev. Non-Marine Foss. Mollusc. North America, 
pls. 9, 10 and 11. 
West flank of Cypress Mountain (Assiniboia), July, 1859: three 
specimens of the thin-shelled, comparatively smooth, typical form of 
©. glabra, with small ligamentary area, and labelled No. 2, Ostrea 
Veleniana. 
‘Red Deer River” (Alberta), ‘‘southwest of the Hand Hills, and 
over the Lignite, Dr. Hector, June, 1859” : four specimens of the variety 
Wyomingensis, labelled No. 30, Ostrea cortex, two with high ligamentary 
areas. 
Battle River (Alberta), above the Elbow, July, 1858 : two specimens 
(one labelled O. cortex) with a very high ligamentary area, and certainly 
very closely resembling O. cortex, Conrad. 
CORBICULA OCCIDENTALIS, Meek and Hayden. 
Cyrena occidentalis, Meek and Hayden. 1856. Proc. Ac. Nat. Sc. Philad., vol. Viii., 
p. 116. 
Cardium multistriatum, Etheridge. 1861. In Hector’s paper in the Quart. Journ. 
Geol. Soc. Lond., vol. xviii., p. 425, but not C. multi- 
striatum, Schumacher. 
os ve Etheridge. 1863. No. 35 of the list on p. 243 of Capt. Pal- 
liser’s Report. 
Corbicula occidentalis, Meek. 1869. Proc. Ac. Nat. Se. Philad., vol. xii., p. 432. 
‘i i G. M. Dawson. 1875. Rep. Geol. & Resource. Reg. in vic. of 
40th Par., p. 183. 
a a Meek. 1876. Rep. U.S. Geol. Surv. Terr., vol. ix., p. 521, 
pl. 40, figs. 6, a-c. 
a a White. 1880. U. S. Geol. Surv., Contr. to Pal., Nos. 2-8, 
p. 75, pl. 21, figs. 3, a-c. 
oe es White. 1883. Rev. Non-Marine Foss. Moll. N. Amer., p. 31, 
pl. 17, figs. 6, 7, and pl. 23, figs. 1-6. 
ee “ Whiteaves. 1885. Contr. to Canad. Palæont., vol. i., pt. 1, 
p. 7, pl. 1, figs. 3 and 3 a. 
“Red Deer River, southwest of the Hand Hills and over the Lignite, 
Dr. Hector, June, 1859” : a small piece of argillaceous limestone, with an 
imperfect cast of the interior of a right valve of this species, two valves 
of Corbula subtrigonalis and a few characteristic examples of its variety 
perundata. The specimen is labelled “ Cardium multistriatum, Schum., and 
Venus,” but without number, though it probably corresponds to Nos. 35, 
36 and 37 of the list of specimens on page 243 of Captain Palliser’s report. 
