LYMNIDA OF NORTH AMERICA. 485 
1844, b. Enumeration of the Recent Fresh Water Mollusca which are 
Common to North America and Europe, with Observations on Spe- 
cies and Their Distribution. Bost. Journ. N. H., IV, p. 468. 
1867. Description of a New Species of Limnza. Amer. Journ. Conch., 
III, p. 194. 
Hankinson, Thomas L. 
Y- 1908. A Biological Survey of Walnut Lake, Michigan. Rep. State Board 
Geol. Surv. Mich., 1907, pp. 153-288. 
Hambach, G. 
1890. A Preliminary Catalogue of the Fossils Occurring in Missouri. Bull. 
Geol. Surv. Missouri, I, pp. 60-85. 
Hanham, A. W. 
1899. A list of the Land and Fresh Water-shells of Manitoba. Nautilus, 
XIII, pp. 1-6. 
Hanley, Sylvanus. 
1853. See Forbes, Edward. 
Hanna, G. Dallas. 
1909. The Mollusca of Douglas County, Kansas. Gasteropoda. Nautilus, 
XXIII, pp. 94-96, December. 
Hannibal, Harold. 
1908. Formation of Epiphragm by Limneza Palustris (Miiller). Nautilus, 
MAT, ‘p:. 33. 
Harper, Geo. W. 
1895. Catalogue of Land and Fresh-water Shells found in the Vicinity of 
Cincinnati, Prepared for the Use of Beginners. Journ. Cin. Soc. 
N. H., XVIII, pp. 89-104. 
Harper, Geo. W., and Wetherby, A. G. 
1876. Catalogue of the Land and Fresh-water Mollusca Found in the Imme- 
diate Vicinity of Cincinnati. February. 
eleignise Gan Ds 
1892. See Dall, W. H. 
Hartmann, W. D. 
— A Classified Catalogue, with Synonyms, of the Terrestrial and Flu- 
’ viatile Testaceous Mollusks of Chester Co., Pa. (no date). 
Hartmann, W. D., and Michener, E. 
1874. Conchologia Cestrica. The Molluscous Animals and their Shells, of 
Chester County, Pa. Philadelphia. 
Hayden, F. V. 
1856. See Meek, F. B. 
1857. Notes on the Geology of the Mauvaises Terres of White River, 
Nebraska. Proc. Phil. Acad., p. 151. 
1860. See Meek, F. B. 
Hayden, F. V. 
1871. Preliminary Report U. S. Geol. Surv. of Wyoming and Portions of 
Contiguous Territories. Second An. Rep. Progress. 
1868. Notes on the Geology of Wyoming and Colorado Territories, No. 1. 
Proc. Amer. Phil. Soc.,.X; pp. 463-478. 
Hayden, F. V., and Meek,. F. B. 
1861. Descriptions of New Lower Silurian (Primordial), Jurassic, Cretace- 
