GEOLOGICAL SURVEY
GEOLOGICAL SURVEY
GEOLOGICAL SURVEY
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BOYLE.] NORTH AMERICAN MES020IC INVERTEBRATA. 283<br />
Thetis (Sby.) Gabb. (1869.)<br />
Geol. Sur. Gal. Faleont., vol. 2, p. 186. Phila.,<br />
1809. W. M. Gabb.<br />
affinis iiom. prov. Whiteaves.<br />
(1884.)<br />
Geol. and Nat. Hist. Sur. Can. Mes. Foss., vol. 1,<br />
pt. 3, pp. 226, 227, pi. 30, figs. 4, 4a, b. Montreal,<br />
1884. J. F. Whiteaves.<br />
Formation: Cretaceous.<br />
Location: Bear Skin bay, Skidegate inlet.<br />
? circularis (M.&H.) Meek. (18760<br />
Kep. U. S. Geol. Sur. Terr., vol. 9, pp. 190, 191,<br />
pi. IT, figs. 8a-c. Wash., 1876. F. B. Meek.<br />
Formation: Cretaceous.<br />
Location: Near Black hills, on Choyeune river;<br />
also near the mouth of Milk river, on the Missouri.<br />
? circularis (M. & H.) White.<br />
(1879.)<br />
Eleventh Ann. Kep. U. S. Geol. and Geogr. Sur.<br />
'Terr., p. 206. Wash., 1879. C. A. White.<br />
Formation: Cretaceous.<br />
Location: Sage creek, Colo.<br />
circularis (M'. & H.) Whitfield.<br />
(1880.)<br />
Rep. Geol. Black Hills of Dak., p. 417, pi. 11, figs.<br />
22-24. Wash., 1880. &. P. Whitfield.<br />
Formation: Cretaceous.<br />
Location: Near the forks of the Cheyenne river,<br />
and near the mouth of Rapid creek, Black hills,<br />
Dak.<br />
? elongata n. s. Gabb. (1869.)<br />
Geol. Sur. Cal. Paleont., vol. 2, p. 186, pi. 30, figs.<br />
80,80a. Phila., 1869. W. M. Gabb.<br />
Formation: Cretaceous.<br />
Location: Vicinity of Cottonwoocl creek, Cal.<br />
Thracia (Leach) M. & H. (1865.)<br />
Paleont. Up. Missouri, Sinithson. Cout. Knowl.,<br />
vol. 14, No. 172, pp. 101, 102. Wash., 18G5.<br />
Meek & Hay den.<br />
? arcuata n. s. M. & H. (1860.)<br />
Proc. Acad. Nat. Sci., Phila., for 1860, p. 182.<br />
Phila., 1861. Meek & Hayden.<br />
Formation: Jurassic.<br />
Location: Southwest base of Black hills, Nebr. [S.<br />
Dak.]<br />
? arcuata M. & H. (1865.)<br />
Paleont. Up. Missouri, Smithson. Cont. Knowl.,<br />
vol. 14, No. 172, p. 102, pi. 4, fig. 8. Wash.,<br />
1865. Meek & Haydea.<br />
Formation: Jurassic.<br />
Location: Southwest base of the Black hills.<br />
gracilis (M. & H.) Meek. (1876.)<br />
Rep. U. S. Geol. Sur. Terr., vol. 9, pp. 224, 226,<br />
pi. 39, figs. 6a, b. Wash., 1876. F. B. Meek.<br />
Formation: Cretaceous.<br />
Location: Mouth of Judith river, Idaho Ter., on<br />
the Missouri.<br />
? occidentals n. s. Meek. (1858.)<br />
Trans. Albany Inst., vol. 4, pp. 43, 44.<br />
1858-1864. F. B. Meek.<br />
Formation: Cretaceous.<br />
Location: Nanaimo, Vancouver island.<br />
Albany,<br />
Thracia C on tinued.<br />
? occidentalis Meek. (1876.)<br />
Bull. U. S. Geol. and Geogr. Sur. Terr, vol. 2, No.<br />
4, p. 363, pi. 2, figs. 3, 3a. Wash., 1870. F. B.<br />
Meek.<br />
Formation: Cretaceous.<br />
Location: Nanaimo, Vancouver island.<br />
myaeformis n. e. White. (1879.)<br />
Proc. U. S. Nat. Mus., vol. 2, pt. 2, pp. 297, 298,<br />
pi. G, figs. 1, 2. Wash., 1880. Smithson. Misc.<br />
Coll., vol. 19. Wash., 1880. C. A. White.<br />
Formation: Cretaceous.<br />
Location: Bell county, Tex.<br />
myaeformis White. (1880.)<br />
Twelfth Ann. Rep. U. S. Geol. and Geogr. Sur.<br />
Terr., pt. 1, p. 23, pi. 17, figs. 2a, 6. Wash.,<br />
1880. C. A. White. '<br />
Formation: Cretaceous.<br />
Location: Bell county, Tex.<br />
? prouti (M. & H.) Meek. (1876.)<br />
Rep. U. S. Geol. Sur. Terr., vol. 9, pp. 225,226, pi.<br />
37, figs. 6a, 6. Wash., 1876. F. B. Meek.<br />
Formation: Cretaceous.<br />
Location: Mouth of Judith river, Idaho Ter., on<br />
the Missouri.<br />
semiplanatan.s. Whiteaves. (1884.)<br />
Geol. and Nat. Hist. Sur. Can. Mes. Foss., vol. 1,<br />
pt. 3, pp. 221, 222, pi. 29, figs. 5, 5a-c. Montreal,<br />
1884. J. F. Whiteaves.<br />
Formation: Cretaceous,<br />
Location: South side of Alliford bay; Bear Skin<br />
bay, Skidegate inlet; South island.<br />
subgracilis n. s. Whitfield. (1877.)<br />
U. S. Geogr. and Geol. Sur. Rocky Mt. Region;<br />
Prelim. Rep. Paleont. Black Hills, p. 36. Wash.,<br />
1877. R. P. Whitfield.<br />
Formation: Cretaceous.<br />
Location: Near French creek, on Cheyenne river,<br />
Dak.<br />
subgracilis Whitfleld. (1880.)<br />
Rep. Geol. Black Hills of Dak., pp. 419,420, pi. 11,<br />
figs. 29,30. Wash., 1880. R. P. Whitfield.<br />
Formation: Cretaceous.<br />
Location: Near French creek, on the Choyeune<br />
river, Black hills, Dak.<br />
? sublevis n. s. M. & H. (1860.)<br />
Proc. Acad. Nat. Sci., Phila., for 1800, p. 182.<br />
Phila., 1861.<br />
Meek & Hayden.<br />
Formation: Jurassic.<br />
Location: Southwest base of Black hills, Nebr. [S.<br />
Dak.]<br />
? subleevis M. & H. (1865.)<br />
Paleont. Up. Missouri, Smithson. Cont. Knowl.,<br />
vol. 14, No. 172, p. 102, pi. 4, figs. 4, '4a. Wash.,<br />
1865. Meek & Haydeu.<br />
Formation: Jurassic.<br />
Location: Southwest base of the Black hills.<br />
? sublevis (M. & H.) Whitfield.<br />
(1880.)<br />
Rep. Geol. Black Hills of Dak., p. 375, pi. 6,<br />
fig. 34. Wash., 1880. R. P. Whitfield.<br />
Formation: Jurassic.<br />
Location: Redwater valley, Black, hills,