392 CALIFORNIA ACADEMY OF SCIENCES. 



LEAIA. LEPERDITIA. 

 LEiDYi Pack., 1882; 12th Eep. 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. SALTER I ANA Jones; Mon. Foss. Estherioe; 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. B„ B,, Bg. La Salle Co., St. Clair 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. 

 Cylherina 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 joneai Hall, idem., vol. 3, p. 372. 

 ^quilatera 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. 32.3, 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-Palaeont., p. 84, pi. 13, figs. 10, 11 a 



and 11 b. 

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



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

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



11, figs. 18, 19. 

 AMYGDALINA Joiies, 1881; Auuals Mag. Nat. Hist., London, 5th series, 



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



