392 CALIFORNIA ACADEMY OF SCIENCES. 



LEAIA. LEPERDITIA. 



- LEIDYI Pack., 1882; 12th Rep. U. S. Geol. Survey Territories, p. 358, 



fig. 24. 



LEIDYI Jones, 1870; Geol. Mag., vol. 7, p. 219, pi. 9, fig. 11; also, Geol. 

 Mag., decade 3, vol. 1, p. 361, pi. 12, fig. 13. 



LEIDYI var. SALTERIANA Jones; Mon. Foss. Esther!; Pal. Soc., 1862, 



p. 119, pi. 1, fig. 2; also Geol. Mag., decade 3, vol. 1, 1884, p. 361, 

 pi. 12, fig. 13. Horton, N. S. 



TRICARINATA M. & W., 1868; Geol. Survey Illinois, vol.3, p. 541, 



figs. Bj, B 2 , B 3 . La Salle Co., St. Glair Co., Vermilion Co., Illinois. 



Coal Measures. 



TRICARINATA White, 1884; 13th Ann. Rep. Dept. Geol. Nat. Hist. 



Indiana, p. 167, pi. 39, figs. 10-13. 



LEPERDITIA Rouault, 1851; Bull. Soc. Geol. France, 2d series, vol. 8, p. 

 377. 



Cytherina ALTA Conrad, 1842; Geol. Rep. New York, 3d Geol. Dist. 

 (Vanuxem), p. 112. Abundant in the Tentaculite-limestone of 

 Albany, Schoharie, Green, Herkimer, Oneida and Cayuga counties, 

 N. Y.; also Greenfield, Ohio, Waubakee, Wisconsin, and Upper 

 Silurian of Wellington Channel in the Artie Regions, etc. The 

 syn. L. jonesi Hall is found in the Coralline-limestone of Scho- 

 harie and Herkimer counties of N. Y. Lower Helderberg. 



Cytherina ALTA? Hall, 1852; Pal. New York, vol. 2, p. 338, pi. 78, figs. 

 2 a-d. Referred to Leperditia jonesi Hall, idem., vol. 3, p. 372. 



JEQUILATERA Ulrich, 1892; The Amer. Geol., vol. 10, p. 365. High 



Bridge, Ky. Birdseye. 

 ALTA Jones, 1856; Annals and Mag. Nat. Hist., London, 2d series, 



vol. 17, p. 88, pi. 7, figs. 6, 7. 

 ALTA Jones, 1858; Annals Mag. Nat. Hist., London, 3d series, vol. 1, 



p. 250, pi. 10, figs. 10, 11. 



ALTA Hall, 1859; Pal. New York, vol. 3, p. 373, pi. 79 a, figs. 6 a-e. 



ALTA Meek, 1873; Pal. Ohio, vol. 1, p. 187, pi. 17, figs. 2 a, b. 



ALTA Jones, 1881; Annals Mag. Nat. Hist., London, 5th series, vol. 



8, p. 346. 



- ALTA Whitf., 1882; Geol. Wisconsin, vol. 4, p. 323, pi. 25, figs. 8, 9. 



ALTA Jones, 1884; Annals Mag. Nat. Hist., London, 5th series, vol. 



14, p. 343. 



ALTA Jones, 1890; Quart. Jour. Geol. Soc., vol. 46, p. 25, pi. 1, figs. 



6 a, b.; also Contrib. Micro-Palseont., p. 84, pi. 13, figs. 10, 11 a 

 and 11 b. 



AMYGDALINA Jones, 1858; Annals Mag. Nat. Hist., London, 3d series, 



vol. 1, p. 341. One mile west of 1'Original, Canada. Chazy. 



AMYGDALINA Jones, 1858; Geol. Survey Canada, decade 3, p. 97, pi. 



11, figs. 18, 19. 



AMYGDALINA Jones, 1881; Annals Mag. Nat. Hist., London, 5th series, 



vol. 8, p. 344, pi. 19, fig. 9. 



