170 CALIFORNIA ACADEMY OF SCIENCES [Proc. 4th Ser. 



Carpenter, P. P., The mollusks of western North America. Smithsonian 

 Misc. Coll. No. 252, 1872. 



Clark, B. L., Fauna of the San Pablo group of middle California. Univ. 



of Calif. Pub. Bull. Dept. Geol. Vol. 8, No. 22, pp. 385-572, 1915. 

 Clark, B. L., The San Lorenzo series of middle California. Univ. of Calif. 



Pub. Bull. Dept. Geol. Vol. II, No. 2, pp. 45-234, 1918. 

 Clark, W. B., Correlation Papers, Eocene. U. S. Geol. Survey. Bull. No. 



83, 1891. 

 Clark, W. B., (and M. W. Twitchell), The Mesozoic and Cenozoic 



Echinodermata of the United States. U. S. Geol. Survey, Mon. No. 54, 



1915. 

 Conrad, T. A., Fossil shells from the Tertiary deposits on the Columbia 



River, near Astoria. <Am. Jour. Sci. 2d Ser. Vol. 5, pp. 432-433, 1848. 

 Fossils from northwestern America: Mollusca. U. S. Expl. 



Exped. App. I, pp. 723-729, pis. 17-20, 1849. 



Description of the fossil shells, Pac. R. R. Repts. Vol. 5, 



pt. 2, app. pp. 322-329, 1856. 



Descriptions of the Tertiary fossils collected by the Survey. 



<Pac. R. R. Repts. Vol. 6, pt. 2, No. 2, pp. 69-73, 1857. 



Report on the paleontology of the Survey. <Pac. R. R. Repts. 



vol. 7, pp. 189-196, 1857. 



Cooper, J. G., Report on the Mollusca by William Cooper, with notes by 

 J. G. Cooper. <Pac. R. R. Repts. vol. 12, pt. 2, pp. 369-386, 1860. 



Catalogue of California fossils. <7th An. Rept. State Mining 



Bureau, pp. 221-308, 1888. 



Cooper, J. G., Catalogue of California Fossils. Bull. 4, California State Min- 

 ing Bureau, pp. 1-65, 1894. 



Dall, W. H., Notes on some Tertiary fossils from the California Coast, 

 with a list of the species obtained from a well at San Diego, Calif., 

 with descriptions of two new species. <Proc. Calif. Acad. Sci. vol. 5, 

 pp. 296-299, 1874. 



A subtropical Miocene fauna in arctic Siberia. <Proc. U. S. 



Nat. Mus. vol. 16, pp. 471-478, 1893. 



A table of North American Tertiary horizons, correlated with 



one another and with those of western Europe. 18th An. Rept. U. S. 

 Geol. Survey, pt. 2, pp. 327-348, 1898. 



(and G. D. Harris), Correlation Papers: Neocene. Bull. 84, 



U. S. Geol. Survey, 1892. 



Contributions to the Tertiary fauna of Florida. Part 4, Pele- 



cypoda ; I, Prionodesmacea ; II, Teleodesmacea. Trans. Wagoner Free 

 Inst. Sci. vol. 3, pt. 4, 1898. 



Contributions to the Tertiary fauna of Florida. Part 5, 



Pelecypoda, concluded. <Trans. Wagner Free Inst. Sci. vol. 6, pt. 5, 

 1900. 



