Catalogue of shells collected in California by W. P. Blake, with descriptions of the new species, pp. 22–28, <i>in</i> Blake, W. P. (ed.), <i>Description of the fossils and shells collected in California. Explorations and surveys for a railroad route from the Mississippi River to the Pacific Ocean. Appendix to the Preliminary Geological Report. Palaentology</i>. War Department, Washington, D.C., 34 pp.