LYMNZEIDA OF NORTH AMERICA. R27 
p. 480, 1844.—GouLp, Agassiz’s Lake Sup., p. 244, 1850-——LapHam, Trans. Wis. 
State Ag. Soc., II, p. 368, 1852.—Mrtes, Geol. Surv. Mich., p. 237, 1860—DEan, 
Amer. Nat., XX VI, p. 18, 1892.—Huetr, Nat. Hist. La Salle Co., p. 104, 1898 — 
Topp, Proc. Iowa Acad. Sci., VI, pp. 124, 125, 1899—HartmMann, Cat. Moll. 
Chester Co.—HvusBBArRD, Cat. 
Limnophysa caperata Morse, Journ. Port. Soc. N. H., p. 42, 1864.—Tryon, 
Amer. Journ. Conch., I, p. 254, 1865.—Currier, Amer. Journ. Conch., I, p. 294, 
1865—HarTMANN and MICHENER, Conchologia cestrica, p. 66, fig. 127, 1974— 
Prime, Forest & Stream, XV, p. 245, 1880.—DeECamp, Kent. Sci. Inst., Mis. 
Pub., No. 5, p. 8, 1881—Catrz, Bull. Wash. Coll. Lab. N. H., I, p. 118, 1885.— 
Grant, Rep. Nat. Hist. Surv., Minn., XIV, p. 122, 1886—CaLt, Bull. Wash. 
Coll. Lab. N. H., II, p. 17, 1887—Kerrp, West Coast Shells, p. 122, fig. 110, 1887. 
Keyes, Bull. Essex. Inst., XX, p. 71, 1888; Bull. Essex. Inst., XX, p. 83, 1888.— 
Gitsert, Mon. U. S. Geol. Surv., I, p. 298. 1890.—Catt, Proc. Ind. Acad. Sci., 
103-6 pe 150, 1893 Proc. Ind: Acad. Sci:, 1895, p.. 138; Proc. Ind. Acad: Sai, 
p. 250, 1895; Proc. Ind. Acad. Sci., 1896, p. 250; Proc. Ind. Acad. Sci., 1896, 
p. 254.—BakeEr, Journ. Cin. Soc. N. H., XIX, pp. 83, 84, 1897—Ca.1, Rep. Dept. 
Geol. & Nat. Res. Ind., XXIV, p. 407, pl. 8, fig. 7, 1899—Norris, Proc. Ind. 
Acad. Sci., p. 118, 1901—BLatcHLEy and AsHLeEy, Rep. Geol. & Nat. Res. Ind., 
XXV, p. 176, 1901—KereEp, West. Amer. Sh., pp. 149, 314; fig. 129, 1904. 
Limnea umbilicata LAPHAM, Trans. Wis. State Ag. Soc., II, p. 368, 1852.— 
Mites, Geol. Surv. Mich., p. 237, 1860. 
Lymnea umbilicata Currier, Sh. Grand Riv., Mich., 1859. 
Lymnea umbilicata Lewis, Proc. Phil. Acad., p. 18, 1860; Proc. Phil. Acad., 
1872, p. 102 
Limnophysa umbilicata Lewis, Bull. Buff. Soc. N. Sci., II, p. 135, 1874. 
Limnea umbilicata D’ URBAN,’ Geol. Surv. Can., Rep. Prog., p. 242, 1859.— 
Bett,’ Geol. Surv. Can., Rep. Prog., p. 252, 1859.—Currier, Kent. Sci. Inst, 
Mis. Pub., No. 1, 1868—Atpricu, Rep. N. Y. State Cab. N. H., XXII, p. 23, 
1868.—JEFFREY’s Ann. Mag. N. H., Ser. 4, X, p. 247, 1872 (part) ; Journ. Conch., 
I, p. 8, 1874 (part) —BEAucHAmpP, L. & F.-W. Sh. N. Y., p. 3, 1886—MarsHALL, 
Rep. N. Y. State Mus., XLVIII, p. 642, 1895.—Srerx1, Ohio Nat., II, p. 286, 
1902. 
Limnea caperata var. umbilicata, Ottawa Nat., I, f. 58, 1882.*—Ottawa* 
Nat., IV, p. 56, 1890. 
Limnea caperata umbilicata Bratch. & DaAntiets, Rep. Dept. Geol. & Nat. 
Res., Ind., XX VII, p. 597, pl. 1, fig. 13, 1902.—DaniEts, Rep Dept Geo:. & Na.. 
Res. Ind., XXVII, p. 636, 1902.—BaxKer, Moll: Chi. Area., II, p. 272, pl. 30, 
fig. 19, text fig. 88, 1902—CHapwick, Bull. Wis. Nat. Hist. Soc, n. s, IV, 
p. 82, 1906; Nautilus, XX, p. 22, 1906. 
Lymnea caperata umbilicata BAKER, Bull. Ill. State Lab. N. H., p. 105, 1906. 
Limnea cubensis BAKER, The Museum, III, p. 154, 1897; Moll. Chi. Area., 
py 2s, 1898s Deans, Acad: Set. St, Louis, XI, p. 12; pl. 1; fig. 10,1901. 
Limnophysa cubensis BAKER (non. Pfr.), Journ. Cin. Sci. N. H., XIX, p. 
83, 1897. 
Limnea ferrissi BAKER, Moll. Chi. Area, p. 277, pl. 31, fig. 26, 1902. 
Lymnea smithsoniana Lea, Proc. Phil. Acad., 1864, p. 113; Journ. Phil. 

1These references may have been based on the true umbilicata, but in the 
absence of the specimens, these records are left under caperata, for the present, 
