LYMNIDZ OF NORTH AMERICA. 4AU7 
1879. Limnea truncatula Miller. Mal. Blatt., n. s., I, p. 20. 
1880. Zur Biologie von Limnza auricularia L. Mal. Blatt., ii, II, p. 199. 
1881. Die Gruppe der Limnza truncatula. Mal. Blatt., 11, III, p. 77. 
1882. In Weissmanns Ueber die Dauer des Lebens, pp. 79-81. 
1886. Die Familie der Limneiden. Mart. & Chem., Conch. Cab. A continu- 
ation of Kister’s Monograph of 1862. 
Cockerell, Theodore D. A. 
1885. The Variation and Abnormal Development of the Mollusca. Science 
Gossip, XXI, p. 179. 
1887. Notes on Some Species of Inland Mollusca. Ann. Mag. Nat. Hist., 
V, MLV, p. 274. 
1889. The British Mollusca. Science Gossip, XXV, p. 44. 
1889, a. Limnza truncatula in Colorado. Nautilus, III, p. 9, May. 
1889, b. Preliminary Remarks on the Molluscan Fauna of Colorado. Journ. 
Conch., VI, p. 60. 
1889, c. Mollusca of Colorado, Nautilus, III, p. 21, June. 
1890. Critical Notes on some Land and Fresh-Water Mollusca. Journ. 
Conch., VI, p. 255. 
1893. Notes on the Conchological Society's New List of British Mollusca. 
Science Gossip, No. 338, p. 25, February. 
1900. See Pilsbry. 
1902. Notes on Limnea. Nautilus, XVI, pp. 95-96, December. 
1906. The Fossil Mollusca of Florissant Colorado. Bull. Amer. Mus. Nat. 
ust. SOX, p: 459; 
1908. The Miocene Species of Lymnza. Nautilus, XXII, p. 96. 
Coleman, A. P. 
_, 1899. The Iroquois Beach. Trans. Can. Inst. VII, pp. 29-44. 
P= 1901. Glacial and Interglacial Beds near Toronto. Journ of Geol., IX, 
No. 4, pp. 285-310, May-June. 
1906. Interglacial Periods in Canada. Mexico. Int. Geol. Congress. 
Colton, Harold S. 
1908. Some Effects of Environment on the Growth of Lymnza Columella 
Say. Proc. Phil. Acad., pp. 410-448. 
Conrad, 7. A. 
1846. Notices of Fresh-Water Shells, etc., of Rockbridge County, Virginia. 
Amer. Journ. Sci., ii, I, pp. 405-407. 
1866. Descriptions of American Fresh-water Shells. Amer. Journ. Conch., 
II, pp. 278-279. 
Cooke, A. H. 
1895. Mollusca. The Cambridge Natural History. Vol. III, MacMillan Co. 
Coolidge, William H., Jr. 
1908. See Walker, R. D. 
Cooper, J. G. 
1862. See Bland, T. 
1868. The Shells of Montana. Amer. Nat., II, pp. 486-487, November. 
1869. Notes on the Fauna of the Upper Missouri. Amer. Nat., III, pp. 
294-299, August. 
1870, a. The West-Coast Fresh-water Univalves, No. 1, Proc. Cal. Acad. 
Sci., IV, pp. 92-100. 
