401 



two inches and a quarter in length and an inch and a half in its greatest 

 breadth. It is longitudinally subovate, but rather irregular in outline, 

 its umbonal region is prominent, and its surface shows impressions of 

 somewhat narrow, flexuous, radiating ribs." * 



These three specimens, and the two collected at practically the same 

 locality by Mr. Richardson, and referred to on page 175 of the second part 

 of this volume as " Hinnites or Spondylus (Sp. Undt.)," agree fairly well 

 with Dr. Stanton's description and figure of S.fragilis, but they are too 

 imperfect and badly preserved to be determined with much certainty. 

 Similar but better specimens, now in the Museum of the Survey, were 

 collected at Extension mine, near Nanaimo, by Mr. Harvey, in 1900, and 

 apparently in the same kind of rock. 



EXOGYRA PARASITICA, Gabb. 



Exogyra j)arasitica, Gabb. 1864. Geol. Surv. Calif., Palaeont., vol. i, p, 205, pi. 26, 



figs. 192 and 192 a, h ; and pi. 31, figs. 273 and 273 a. 

 Sa;o^yra (Sp. undt.) Whiteaves. 1879. This volume, pt. 2, p. 175. 



The single valve of an Exogyra from the entrance to Departure Bay, 

 referred to on page 175 of the second part of this volume, and two speci- 

 mens with both valves since collected at the Sucia Islands by Dr. Newcombe 

 (in 1896) are probably referable to E. parasitica, though in one of the 

 latter, a part at least of the attached valve is radiately costate. 



Gryph/EA vesicularis, Lamarck. 



Ostrea vesicularis, Lamarck. 1806. Ann. Mus., vol. viii, p. 160, pi. 22, fig. 3 ; and (1819) 

 Hist. An. Sans Verteb. , vol. vi, p. 219. 

 •. M Goldfuss. 1826. Petref. Germ., vol. i, p. 23, pi. 81, fig. 2. 



II ir D'Orbigny, Pal. Franc, Terr. Cretac, vol. in, p. 742, pi. 487, figs. 1 



and 2, but not figs. 6, 8 and 9. 

 Ostrea convexa, Say. 1820. Amer. Journ. Sc. and Arts, vol. ii, p. 42. 

 Gri/phcea convexa, Morton. 1828. Journ. Ac. Nat. Sc. Philad., vol. vi, p. 79, pi. 4, figs. 

 1 and 2, and pi. 5, figs. 1-3 ; also (1834) Synops. Org. Rem. Cret. 

 Gr. U. S., p. 53, pi. 4, figs. 1-2. 

 Gryphcea mutabilis, Morton. 1828. Journ. Ac. Nat. Sc. Philad., vol. vi, p. 81, pi. 4, 

 fig. 3 : and (1834) Synops. Org. Rem; Cret. Gr. U. S., p. 53, pi. 4, 

 fig. 3. 

 Gryphcea 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), pi. 11, figs. 2 a, b, c, and pi. xvi, figs. 8, a-h. 

 Gryphcea vesicularis, Whiteaves. 1896. Trans. Royal Soc. Canada for 1895, Second 

 Series, vol. i, sect, iv, p. 120. 



" Howe Sound, Mr. J, Fannin, 1884 : one lower valve, about fifty-one 

 millimetres long and fifty-seven broad. It is ovately subtriaugular in 



'Transactions of the Royal Society for 1895, Second Series, vol i, sect, iv, pp. 110, 111. 



