262 THE CHICAGO ACADEMY OF SCIENCES. 
Sup., p. 244, 1850.—Cariton, Proc. Cal. Acad. Sci. IV, p. 51, 1869—An. Rep., 
N. Y. State Mus., XXV, p. 37, 1871—INGErRSOLL, Rep. U. S. Geol. & Geog. Surv. 
Terr., 1874, p. 406; Bull. U. S. Geol. & Geog. Surv., I, p. 139, 1875.—Tonpp, 
Proc. A. A. A. Sci., XXVII, p. 234; 1878\—Huett, Nat. Hist. La Salle Co., p. 
104, 1898—Hupparp, Cat—HartMan, Cat. Moll. Chester Co.—Sterxi1, An. 
Rep. Geol. Surv. Texas, III, p. 263, 1891—Hzrnperson, Nautilus, XX, p. 98, 
1907.—Cat. Coll. Nat. Hist. Eth. Prov. Mus. Victoria, p. 95, 1898. 
Limnophysa humilis Morse, Journ. Port. Soc. N. H., I, p. 42, 1864.— 
Currier, Amer. Journ. Conch., I, p. 294, 1865——Tryon, Amer. Journ. Conch., 
1, p. 256, 1865 (part)—Cooprer, Proc. Cal. Acad. Sci., IV, p. 153, 1870.—Coorrr, 
Proc. Cal. Acad. Sci., IV, p. 174, 1872—Lewis, Bull. Buf. Soc. N. Sci., II, p. 
135, 1874—HarTMAN and MICHENER, Conch. Cestrica, p. 65, 1874—PRIME, 
Forest & Stream, XV, p. 245, 1880.—Catt, Amer. Nat., XV, p. 784, 1881— 
MoGee & Catt, Amer. Journ. Sci. ii, XXIX, p. 208, et sq., pl. V, figs. 5-11, 
1882..—Sampson, Kas. City Rev. Sci., May, 1883, p. 23.—Ca.t, Bull. U. S. Geol. 
Surv., II, p. 372, 1884—CHAMBERLIN & SALisBuRY, An. Rep. U. S. Geol. Surv., 
VI, p. 286, 1885.—Catt, Bull. Wash. Coll. Lab. N. H., I, p. 53, 1885.—Cooprr, 
An. Rep. Cal. State Min. Bu., VI, p. 245, 1886-—Kerep, West Coast Shells, p. 
122, 1887—Keyes, Bull. Essex Inst., XX, p. 71, 1888; Bull. Essex Inst., XX, 
p. 83, 1888.—Coorrr, An. Rep. Cal. State Min. Bu., VII, p. 245, 1888; Zoe, I, 
p. 196, 1890.—GiLBErT, Mon. U.S. Geol. Surv., I, p. 298, 1890—McGes, Rep. 
U. S. Geol. Surv., XI, p. 448, 1891—Cooprr, Proc. Cal. Acad. Sci., (ii) III, 
p. 217, 1892; Zoe., III, p. 20, 1892—Catt, Proc. Ind. Acad. Sci., 1893, p. 150.— 
Cooper, Proc. Cal. Acad. Sci., Ser. 2, 1V, p. 170, 1894—Catt, Proc. Ind. Acad. 
Sci., 1895, pp. 138, 250; Proc. Ind. Acad. Sci., 1896, p. 250._-Dana, Geology, 
p. 966, 1896.—BakeEr, Journ. Cin. Soc. N. H., XIX, p. 83, 1897-—Catt, An. Rep. 
Dept. Geol. Nat. Res. Ind., XXIV, p. 408, 1899.—?Bryer, Proc. Iowa Acad. 
Sci., VI, p. 118, 1899.—LevrereTT, Mon. U. S. Geol. Surv., XXXVIII, p. 166, 
1899—BLaTcHLry and Assury, An. Rep. Dept. Geol. & Nat. Res. Ind., XXV, 
pp. 176, 226, 304, 1901—Norris, Proc. Ind. Acad. Sci., 1901, p. 118. 
Limnea desidiosa BAKER, Moll. Chi. Area, p. 265, pl. XXI, fig. 7, 1902; 
iirans. Acad.-Ser St. omss OV lapels. 1906: 
Lymnea jamesti LEA, Proc. Phil. Acad., 1864, p. 113; Journ. Phil. Acad., 
VI, p. 161, pl. 24, fig. 77, 1866; Obs., XI, p. 117, pl. 24, fig. 77, 1867—ScuDnDER, 
Bull. Nat. Mus., 23, pp. 149, 201, 1885. 
Limnea jamesii Tryon, Amer. Journ. Conch., III, p. 196, 1867.—Con. 
Hald. Mon., p. 104 (78), pl. 18, fig. 3, 1872. 
Limnophysa james Tryon, Amer. Journ. Conch., I, p. 255, 1865. 
SHELL: Of medium size, elongate-ovate or fusiform; periostra- 
cum light yellowish horn; surface shining, with distinct, rather coarse 
lines of growth and frequently very fine spiral lines; whorls 4% to 5, 
convex, the body whorl very large, flatly rounded; spire generally 
short, broadly or acutely conic, sometimes dome-shaped; sutures well 
impressed; nuclear whorls 114, resembling those of Galba cubensis in 
outline, the first whorl very small, the second very large, the sculpture 
of the post-nuclear whorls beginning gradually; aperture ovate or 
Some of these should probably be referred to parva rather than to 
modicella. 
