120 ROYAL SOCIETY OF CANADA 
men and two single valves; and Dr. C. F. Newcombe, 1894, six single 
valves. 
MOLLUSCA. 
PELECYPODA. 
GRYPHÆA VESICULARIS, Lamarck. 
Ostrea vesicularis, Lamarck. 1806. Ann. Mus., vol. viii., p. 160, pl. 22, fig. 3; and 
(1819) Hist. An. Sans Verteb., vol. vi., p. 219. 
a ee Goldfuss. 1826. Petref. Germ., vol. i., p. 23, pl. 81, fig. 2. 
D’Orbigny, Pal. Franc., Terr. Crétac., vol. iii., p. 742, pl. 487, figs. 
1 and 2, but not figs. 6, 8 and 9. 
Ostrea convexa, Say. 1820. Am. Journ. Sc. and Arts, vol. ii., p. 42. 
Gryphea convexa, Morton. 1828. Journ. Ac. Nat. Se. Philad., vol. vi., p. 79, pl. 4. 
figs. 1 and 2, and pl. 5, figs. 1-3; also (1834) Synops. Org. 
Rem. Cret. Gr. U. S., p. 53, pl. 4, figs. 1-2. 
Gryphea mutabilis, Morton. 1828. Journ. Ac. Nat. Sc. Philad., vol. vi., p. 81, pl. 4, 
fig. 3: and (1834) Synops. Org. Rem. Cret. Gr. U. S., p. 53, 
pl. 4, fig, 3. 
Gryphea vesicularis, Meek. 1876. Rep. U.S. Geol. Surv., Terr., vol. ix., p. 20 (which 
see, for several European and U.S. synonyms, not included 
in this list), pl. 11, figs, 2 a, b, ec, and pl. 16, figs. 8, a-b. 
Howe Sound, Mr. J. Fannin, 1884: one lower valve, about fifty-one 
millimetres long and fifty-seven broad. It is ovately subtriangular in 
outline, broader than long, and its posterior side is produced and some- 
what pointed below. Nanaimo, V.I., two specimens; one a very gibbous 
lower valve, sixty-five mm. long and forty-two broad ; the other, seventy 
millimetres in length by forty-nine in breadth, with both valves pre- 
served in situ, but with a much less convex lower valve; both of them 
elongate subovate in marginal outline and almost equilateral. In two of 
the specimens the lower valve is strongly and regularly convex, but it is 
not lobed posteriorly by a distinct longitudinal groove or sinus on or 
near the front margin, in either of the three. 
‘These free and narrowly convex shells look very different to the 
broad, irregularly subhemispherical specimens, with a broad surface of 
attachment to the umbo of the lower valve, from the Fort Pierre group 
of the Dakota Cretaceous, which Mr. Meek referred with some doubt to 
O. vesicularis. Still they correspond fairly well with Goldfuss’ descrip- 
tion and figures of the typical form of that species, which he calls the 
“var. A.,’ and describes as “testa rostrata libera;” also with Morton’s 
figures of G. convexa, Say, and with one of Stoliezka’s figures (Cret. Faun. 
S. India, pl. 42, fig. 4) of O. vesicularis. 
