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GEOLOGICAL SURVEY

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116 NORTH AMERICAN MESOZOIC INVERTEBRATA. [BULL 102.<br />

Discina Continued.<br />

pileolus n. s. Whiteaves. (1889.)<br />

Geol. and Nat. Hist. Sur. Can., Cont. Can. Paleont.,vol.<br />

l,pt. 2, p,159, pi. 21, figs. 3,3a. Montreal,<br />

1889. J. F. Whiteaves.<br />

Formation: Cretaceous.<br />

Location: Rink Rapid, on the Lewes river, a<br />

tributary of the Yukon, lat. 60° 20,' long. 136°<br />

30', Northwest Territory.<br />

semipolita n. a. Whitoaves. (1884.)<br />

Geol. and Nat. Hist. Sur. Cau., Mes. Foss., vol. 1,<br />

pt. 3, pp. 352-354, pi. 33, figs. 9, 9a. Montreal,<br />

1884. J. F. Whiteaves.<br />

Formation: Cretaceous.<br />

Location: South side of Maud island.<br />

vancouverensis n. s. Whiteaves.<br />

(1879.)<br />

Gool. Sur. Can., Mes. Foss., vol. 1, pt. 2, p. 177,<br />

pi. 20. ttg. 6. Montreal, 1879. J. F. Whiteaves.<br />

Formation: Cretaceous.<br />

Location: Southeast of Ganges harbor, on Salt<br />

Spring or Admiralty island.<br />

sp. undet. Meek. (1877.)<br />

Rep. Geol. Expl. Fortieth Parallel, vol. 4, pt. 1,<br />

- pp. 99,100, pi. 10, figs. 3, 3a. Wash., 1877. F.<br />

B. Meek.<br />

Formation: Triassic.<br />

Location: Weber cation, Wasatch range.<br />

Discites (subgen. De Haan.) Meek. (1876.)<br />

Bep. U. S. Geol. Sur. Terr., vol. 9, p. 491. Wash.,<br />

1876. F. B. Meek.<br />

Discohelix (Duuker) Gabb. (1864.)<br />

Geol. Sur. Cal., Taleout., vol. 1, p. 119. Phila.,<br />

1864. W. M. Gabb.<br />

leana n. s. Gabb. (1864.)<br />

Geol. Sur. Cal.,Paleont., vol. 1, pp. 119, 120, pi.<br />

20, fig. 75. Phila., 1801. W. M. Gabb.<br />

Formation: Cretacecus.<br />

Location: Texas Flat, Placer county, California.<br />

Discoidea (Agas.) Conrad. (1850.)<br />

Jour. Acad.Nat. Sci., Phila., vol.'2, 2dser., 1850-<br />

1854, p. 40. Phila., 1850-1854. T. A. Conrad.<br />

occidentale n. s. Gabb. (1860.)<br />

Jour. Acad. Nat. Sci., Phila., vol. 4, 2d ser., 1858-<br />

1860, p. 398, pi. 68, flgs. 42-44. Phila., 1858-<br />

1860. Wm. M. Gabb.<br />

Formation: Cretaceous.<br />

Location: Oregon.<br />

occidentalis Gabb. (1876.)<br />

Proc. Acad. Nat. Sci., Phila., for 1876, pp. 323,<br />

324. Phila., 1876. Wm. M. Gabb.<br />

Formation: Cretaceous.<br />

Location: Oregon ? Or may be from Peru.<br />

Discorbina globularis (d'Orb.) Dawson.<br />

(1874.)<br />

Canadian Naturalist, vol. 7 n. ser., p. 255, fig. 1, c,<br />

p. 253. Montreal, 1875. G. M. Dawson.<br />

Formation: Cretaceous.<br />

Location: About twenty miles north of the fortyninth<br />

parallel, on the escarpment called Pembina<br />

mountain, Manitoba.<br />

Discoscaphites n. subgen. Meek. (1870.)<br />

Proc. Am. Philos. Soc., vol. 11, 1869-1870, p. 429.<br />

Phila., 1871. F. B. Meek.<br />

Ditaxia compressa (Goldf.) Credner.<br />

(1870.)<br />

Zeitsch. Deutsch. Geol. Ges., Baud 22, p. 220. Bar*<br />

lin, 1870.. H. Credner.<br />

Formation: Cretaceous.<br />

Location: Timber creek, New Jersey.<br />

Donax (Linn.) Gabb. (1869.)<br />

Geol. Sur. Cal., Paleont., vol. 2, p. 183. Phila.,<br />

1869. W. M. Gabb.<br />

fordii n. s. Conrad. (1869.)<br />

Am. Jour. Conch., vol. 6, Phila., 1869-1870,p. 102,<br />

pi. 9, fig. 25. Phila., 1870. T. A. Conrad.<br />

Formation: Cretaceous.<br />

Location: Haddonfield, N. J.<br />

fordii (Con.) Whitfield. (1885.)<br />

Mon. U. S. Geol. Sur., vol. 9, pp. 171, 172, pi. 23,<br />

fig. 1. Wash.,1885. R. P. Whitfield.<br />

Formation: Cretaceous.<br />

Location: Haddonfield, N. J.<br />

latus n. s. Gabb. (1869.)<br />

Geol. Sur. Cal.,Paleont., vol. 2, pp. 183,184, pi. 30,<br />

fig. 75. Phila., 1869. W.M.Gabb.<br />

Formation: Cretaceous.<br />

Location: Ten miles west of Griswold's, southeast<br />

of the Sheep Well, on the road from San Juan to<br />

Now Idria, Cal.<br />

Dosinia (Scopoli) Conrad. (1858.)<br />

Jour. Acad. Nat. Sci., Phila., vol. 3, 2d ser., 1855-<br />

1858, p. 325. Phila., 1855-1858. T. A. Conrad.<br />

alta n. s. Conrad. (1855.)<br />

Rep. Expl. aud Sur, R. R. R. Miss, river to Pacific<br />

Ocean. App. Prelim. Geol. Rep. of W. P. Blake.<br />

Pal., p. 9. Wash., 1855. T.A.Conrad.<br />

Formation: Eocene [Cretaceous],<br />

Location: Canada de las Uvas.<br />

alta Conrad. (1856.)<br />

Rep. Expl. and Sur. R. R. R. Miss, river to Pacific<br />

Ocean, vol. 5, App., p. 320, pi. 2, fig. 2. Wash.,<br />

1856. T. A. Conrad.<br />

Formation: Eocene [Cretaceous].<br />

Location: Canada de las Uvas.<br />

densata n. s. Conrad. (1858.)<br />

Jour. Acad. Nat. Sci., Phila., vol. 3, 2d sen, 1855-<br />

1858, p. 325, pi. 34, fig. 13. Phila., 1855-1858.<br />

T. A. Conrad.<br />

Formation: Cretaceous.<br />

Location: Owl creek, three miles north of the<br />

town of Hipley, Miss.<br />

depressa n. s. Conrad. (1860.)<br />

Jour. Acad. Nat. Sci., Phila., vol. 4, 2d ser., 1858-<br />

1860, p. 278, pi. 46, fig. 6. Phila., 1858-1860.<br />

T. A. Conrad.<br />

Formation: Cretaceous.<br />

Location: Eufaula, Ala.<br />

elevata n. s. Gabb. (1864.)<br />

Geol. Sur. Cal., Paleont, vol. 1, p. 167, pi. 30, fig.<br />

252. Phila., 1864. W. M. Gabb.<br />

Formation: Cretaceous.<br />

Location: Near Fort Tejon, Cal.

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