22G THE CHICAGO ACADEMY OF SCIEN- 



Can. Rep. Prog., p. 252. 1859. — Binney, Check List, p. 12. l^CO. — ?L.U'Ham, 

 Proc. Phil. Acad.. 1860, p. 155.— PBlNNEY, Proc. Phil. Acad., p. 330, 1861. 1 — 

 Bell, Can. Nat. & Geol., VI. pp. 42, 46, 1861.— Whiteaves, Can. Xat. & Geol., 

 VIII, p. 103, 1863.— Tryon, Proc. Phil. Acad., 1863, p. 149.— Conn. Geol. Can., 

 pp. 969, 985, 1864.— Binney, L. & F. W. Sh. X. A.. II. p. 50. fig. - 

 Carrier, Kent. Sci. Inst., Mis. Pub., Xo. 1. 1868. — Smith and Prime, Ann. Lye. 

 X. H., IX, p. 378, 1870— Gould, Invert. Mass., Ed. Binney, p. 481, fL 

 1870.— Sowerby, Conch. Icon., XVIII, Lim., sp. 53, pi. 8, fig. 53, 1872.— Tryon, 

 Con. Hald. Mon., p. 106 (80), 1872. — Calkins, Proc. Ottawa Acad. Sci., p. 25, 

 1874; Cin. Quart. Journ. Sci., I, pp. 243, 323, 1874.— Smith, U. S. Fish Com. 

 Rep., 1872-73, p. 702, 1874.— Yarrow, U. S. Geog. Surv. 100th Merid., V, p. 944, 

 1*7.",. — Dawson. British X. A. Bound. Com., p. 349, 187.5. — Pratt, Proc. Daven. 

 Acad. Sci., I, p. 166, 1876. — Witter, Journ. Conch., I, p. 387, 1878.— Walker, 

 Journ Conch., II, p. 330, 1879.— Heron, Ottawa Xat., I, p. 39, 1880. — Stein, Ind. 

 Dept. of Stat. & Geol., 1880, p. 458.— Call, Amer. Xat., XV, p. 586, 1881.— 

 Christy, Journ. Conch., IV, p. 347, 1885. — Ottawa Xat., II, p. 264, 1885. — Beau- 

 champ, L. & F.-W. Sh. X. Y., p. 3, 1886.— H. F. Cpr., Random Xotes X. H., 

 Ill, p. 79, 1886.— Marsh, Conch. Exch., II, p. 104, 1887.— Shimek, Bull. Lab. 

 X. H. Univ. Iowa, I, pp. 68, 208, 1888; Amer. Geol., I, p. 151, 1888.— H. F. Cpr., 

 Cat. Sh. R. I., Ed. 2, p. 5, 1889.— Ottawa Xat, IV, p. 55, 1890.— Shimek, Bull. 

 Lab. Xat. Hist. Univ. Iowa, I, p. 200, 1890. — Walton, Proc. Roch. Acad. Sci., 

 II, p. 12, 1891.— Stearns, Proc. Xat. Mus., XIV, p. 101, 1891.— Pilsbry, Proc. 

 Phil. Acad., 1891, p. 320.— McGee, Rep. U. S. Geol. Surv., XL p. 461, 1891.— 

 Taylor, Ottawa Xat., VI. p. 33, 1892.— Walker, Xautilus, VI, p. 34, 1892 — 

 Dean. Amer. Xat., XXVI, p. 11. 1892.— Marshall, Rep. X. Y. State Mus., 

 XLVII, p. 65, 1893.— Stearns, X. A. Fauna, VII, p. 274. 1893.— Marshall, 

 X. Y. at World's Col. Exp., p. 512, 1894.— Walker. Rev. Moll. Mich., 1894, p. 

 17. — Pilsbry, Proc. Phil. Acad., 1894, p. 24. — Souyer. Xautilus. VIII, p. 65, 

 1894.— Taylor, Ottawa Xat, IX, p. 175, 1895.— Ottawa Xat.. IX, p. 156, 1895. — 

 Sargent, Xautilus, IX, p. 127, 1896. — Wiswall, Xat. Sci. Journ., I, p. 45, 1897. — 

 Shimek, Proc. Iowa Acad. Sci., V, pp. 35. 44, 1898. — Baker, The Museum, III, 

 p. 154, 1897; Journ. Cin. Soc. X. H.. XIX, p. 78, 1897; Xautilus, XII, p. 65, 

 1898; Trans. Acad. Sci. St. Louis, VIII, p. 89, 1898. — Todd, Proc. Iowa Acad., 

 VI, pp. 124, 125, 1898.— Walton, The Museum, IV, p. 133, 1898.— Baker, Moll. 

 Chi. Area., pp. 23, 24, 1898. — Hanham, X'autilus, XIII, p. 5, 1899. — Leyerett, 

 Mon. U. S. Geol. Surv., XXXVIII, pp. 173. 174, 1899.— Clapp, Xautilus, XIV, 

 p. 64, 1900.— Stearns, Proc. Xat. Mus., XXII, p. 135, 1900.— Baker, Trans. 

 Acad. Sci. St. Louis, XI, p. 10, pi. 1, fig. 11. 1901.— Shimek, Bull. Lab. X. H. 

 Univ. Iowa, V. p. 207, 1901 ; Amer. Geol., XXVIII, p. 353, 1901.— Stearns, Proc. 

 Xat. Mus., XXIV, p. 291, 1901.— Baker, Amer. Xat, XXXV, p. 662, 1901 — 

 Shimek, Geol. Surv. Iowa, p. 264, 1901. — Elrod, Bull. Univ. Mont, Biol. Ser., 

 Xo. 3, p. 173, 1902.— Sterki, Ohio Xat., II, p. 286, 1902.— Daniels, Rep. Dept 

 Geol. & Xat Res. Ind., XXVII, P- 636, 1902.— Baker, Moll. Chi. Area., p. 270, 

 pi. 30, fig. 18, text fig. 87, 1902; Shells of Land and Water, p. 43, fig. 1903; 

 Xautilus, XVII. p. 113, 1904.— Shimek, Bull. Lab. X. H. Univ. Iowa, V, p. 379, 

 1904.— Letsox, Bull. X. Y. State Mus.. LXXXVIII, p. 55, 1905.— Chadwick, 

 Bull. Wis. Xat. Hist. Soc, n. s., IV, p. 82, 1906.— Xautilus, XX, p. 22, 1906. 



Limnea caperata Hald., Mon. Limn., p. 34, pi. 11, figs. 1-8, 1842. — DeKay, 

 p. 69, pi. 4, figs. 66, 69, pi. 5, fig. 79, 1843.— Haldeman, Rupps. Hist. Lane. Co., 



