262 THE CHICAGO ACADEMY OF SCIENCES. 



Sup., p. 244, 1850. CARLTON, Proc. Cal. Acad. Sci., IV, p. 51, 1869. An. Rep., 

 N. Y. State Mus., XXV, p. 37, 1871. INGERSOLL, Rep. U. S. Geol. & Geog. Surv. 

 Terr., 1874, p. 406; Bull. U. S. Geol. & Geog. Surv., I, p. 139, 1875. TODD, 

 Proc. A. A. A. Sci., XXVII, p. 234, 1878. HUETT, Nat. Hist. La Salle Co., p. 

 104, 1898. HUBBARD, Cat HARTMAN, Cat. Moll. Chester Co. STERKI, An. 

 Rep. Geol. Surv. Texas, III, p. 263, 1891. HENDERSON, 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). COOPER, Proc. Cal. Acad. Sci., IV, p. 153, 1870. COOPER, 

 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. CALL, Amer. Nat., XV, p. 784, 1881. 

 McGEE & CALL, Amer. Journ. Sci. iii, XXIX, p. 208, et sq., pi. V, figs. 5-11, 

 1882. 1 SAMPSON, Kas. City Rev. Sci., May, 1883.. p. 23. CALL, Bull. U. S. Geol. 

 Surv., II, p. 372, 1884. CHAMBERLIN & SALISBURY, An. Rep. U. S. Geol. Surv., 

 VI, p. 286, 1885. CALL, Bull. Wash. Coll. Lab. N. H., I, p. 53, 1885. COOPER, 

 An. Rep. Cal. State Min. Bu., VI, p. 245, 1886. KEEP, West Coast Shells, p. 

 122, 1887. KEYES, Bull. Essex Inst., XX, p. 71, 1888; Bull. Essex Inst, XX, 

 p. 83, 1888. COOPER, 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. McGEE, Rep. 

 U. S. Geol. Surv., XI, p. 448, 1891. COOPER, Proc. Cal. Acad. Sci., (ii) III, 

 p. 217, 1892; Zoe., Ill, p. 20, 1892. CALL, Proc. Ind. Acad. Sci., 1893, p. 150. 

 COOPER, Proc. Cal. Acad. Sci., Ser. 2, IV, p. 170, 1894. CALL, Proc. Ind. Acad. 

 Sci., 1895, pp. 138, 250; Proc. Ind. Acad. Sci., 1896, p. 250. DANA, Geology, 

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 Dept. Geol. Nat. Res. Ind., XXIV, p. 408, 1899. ?BEYER, Proc. Iowa Acad. 

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Limn&a desidiosa BAKER, Moll. Chi. Area, p. 265, pi. XXI, fig. 7, 1902 ; 

 Trans. Acad. Sci. St. Louis, XVI, p. 13, 1906. 



Lymncea jamesii LEA, Proc. Phil. Acad., 1864, p. 113; Journ. Phil. Acad., 

 VI, p. 161, pi. 24, fig. 77, 1866; Obs., XI, p. 117, pi. 24, fig. 77, 1867. SCUDDER. 

 Bull. Nat. Mus., 23, pp. 149, 201, 1885. 



Limnaa jamesii TRYON, Amer. Journ. Conch., Ill, p. 196, 1867. Con. 

 Hald. Mon., p. 104 (78), pi. 18, fig. 3, 1872. 



Limnophysa jamesii 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 1^4, 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 



1 Some of these should probably be referred to parva rather than to 

 modicella. 



