LYMNEIDZ OF NORTH AMERICA. 79 
UNGLACIATED AREA. 
Marl Deposits. Lakes Bonneville and Lahontan, Nevada and Utah; 
Coconino Co., Arizona. 
Charcoal Zone. ; New Mexico (Arroyo Pecos). 
Dry Salt Lake. New Mexico (near Eddy). 
Sandy Clay. Texas (Howard Co.). 
Pliocene. Tassajora Lake Bed, Alameda Co., Cal. 
Unclassified. Contra Costa and Alameda Counties, Cal.; South 
Platte River. 
SUMMARY. 
Species and varieties in englaciated area.................56. 17 
Species and varieties in unglaciated area.......:.....2.%0. ft 
oundtonlyaainenglaciated varea mms ce ieee emer oe 10 
Commonutos bothwaneass..oteusee oe eae eens eae ere 6 
C. BIBLIOGRAPHY. 
The following works have been consulted in the preparation of Chapter 
Ill: (See Bibliography at end of volume.) 
Adams, C. C., 1901; 1902, a; 1902; 1905.—Baker, F. C., 1910, d—Binney, 
1885.—Chamberlin, T. C., 1883; 1906—Coleman, A. P., 1901; 1906.—Cooke, 
A. H., 1895.—Dall, W. H., 1905, a, 1905, b—Fairchild, H. L., 1899; 1909.—Gil- 
bert, G. K., 1890.—Jordan and Kellogg, 1907.—Jordan, Hermann, 1883.—Leverett, 
Frank, 1895; 1899; 1902—Maury, C. J., 1908—Merriam, C. H., 1890; 1898; 
1910.—Pascal, L., 1891—Pilsbry, H. A., 1906.—Salisbury, R. D., 1902.—Scharff, 
R. F., 1907; 1909.—Simpson, C. T., 1895; 1900.—Tight, W. G., 1903.—Todd, J. E, 
1896.—Tryon, J. W., 1882—Upham, W., 1895 —Verrill, A. E., 1873—Walker 
B., 1900, b—Warren, G. K., 1875 —Wegemann, C. H., 1909. 
