2G2 THE CHICAGO ACADEMY OF SCIEN< ES. 



Sup., p. 244, 1850.— Carlton, Proc. Cal. Acad. Sci.. IV, p. 51, is*;-*. — An. Rep., 

 X. V. State Mas., XXV, p. 37, 1871.— Ingersoll, Rep. U. S. Geol. & Geog. Surv. 

 Terr., 1874, p. 406; Bull'. U. S. Geol. & Geog. Surv., I, p. 139, 1-7:.— Todd, 

 Proc. A. A. A. Sci., XXVII, p. 234, 1878.— Huett, Nat. Hist. La Salle Go., p. 

 104, 1898. — Hubbard, Cat. — Hartman, Cat. Moll. Chester Co. — Sterkj, An. 

 Rep. Geol. Surv. Texas, III, p. 263, 1891.— Henderson, Nautilus, XX, p. 98, 

 1907.— Cat. Coll. Xat. Hist. Eth. Prov. Mus. Victoria, p. 95, 1898. 



Limnophysa humilis Morse, Journ. Port. Soc. X. 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. X. Sci., II, p. 

 135, 1874. — Hartman and Michener, Conch. Cestrica, p. 65, 1874. — Prime, 

 Forest & Stream, XV, p. 245, 1880.— Call, Amer. Xat.. 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. X. 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, 

 p. 966, 1896.— Baker, Journ. Cin. Soc. X. H., XIX, p. 83, 1897.— Call, An. Rep. 

 Dept. Geol. Xat. Res. Ind., XXIV, p. 408, 1899.— ?Beyer, Proc. Iowa Acad. 

 Sci., VI, p. 118, 1899.— Leverett, Mon. U. S. Geol. Surv., XXXVIII, p. 166, 

 1899. — Blatchley and Asbury, An. Rep. Dept. Geol. & Xat. Res. Ind., XXX 7 , 

 pp. 176, 226, 304, 1901.— Xorris, Proc. Ind. Acad. Sci., 1901, p. 118. 



Limneea 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., 

 XT, p. 161. pi. 24, fig. 77, 1866; Obs., XI, p. 117, pi. 24, fig. 77, 1867.— Scudder. 

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



Limiicca jamesii Tryon, Amer. Journ. Conch., III. p. 196, 1867. — Con. 

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



LimnopJiysa jamesii Tryon, Amer. Journ. Conch., I, p. 255, 1865. 



Shell: Of medium size, elongate-ovate or fusiform; periostra- 

 eum light yellowish horn ; surface shining, with distinct, rather coarse 

 lines of growth and frequently very fine spiral lines; whorls -AJ/? 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 atbcusis 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. 



