LYMNZIDZ OF NORTH AMERICA. 303 
Limnea palustris var. nuttalliana Woop, Nautilus, p. 56, 1891.—Kerep, West. 
Amer. Sh., p. 314, 1904. 
Limnophysa palustris var. nuttalliana Cooper, Zoe., I, p. 196, 1890. 
Lymnea palustris var. nuttalliana Dati, Alaska Moll., p. 76, fig. 57, 1905. 
Lymnea palustris nuttalliana Berry, Nautilus, XXI, p. 123, 1908. 
Lymnea haydeni Lea, Proc. Phil. Acad., 1858, p. 166; Exp. in Nebraska, 
II, pt. 3, p. 724, 1859.—Journ. Phil. Acad., VI, pp. 159, 161, pl. 34, fig. 73, 1866; 
Obs., pp. 115, 117, pl. 34, fig. 73, 1867.—SCUDDER Bull. Nat. Mus., 23, pp. 82, 
149, 201, 1885——Roserts, Rep. U. S. Geol. Surv. Wyoming, 1871, p. 468. 
Limnea haydeni INGERSOLL, Bull. U. S. Geol. & Geog. Sune 1, ps 138) sioy 
Rep. U. S. Geol. & Geog. Surv. Terr., 1876, p. 405. 
Limnea haydeni Binney, Check List, p. 12, 1860; 1 & BOW. She Nae, 
II, p. 44, fig. 59, 1865 Tryon, Con. Hald. Mon., p. 98 (72), pl. 17, fig. 6, 1872.— 
Wa ker, Nautilus, VI, p. 33, 1892; Rev. Moll. Mich., 1894, pp. 18, ey. 
Limnophysa haydeni Tryon, Amer. Journ. Conch., I, p. 251, 1865.—CALL, 
Bull. Wash. Coll. Lab. N. H., I, p. 52, 1885. 
Limneus haydeni CLesstn, Ktster, Conch. Cab., p. 390, taf. 53, pl. 10, 1886. 
Limnea sumassi Tryon, Con. Hald. Mon., p. 97 (71), pl. 1%, fig. 5, 1872.— 
INGERSOLL, Bull. U. S. Geol. & Geog. Surv., I, p. 138, 1875; Rep. U. S. Geol. & 
Geog. Surv. Terr., 1874, p. 405, 1876. 
Limnea near sumassi Prtspry, Nautilus, XVII, p. 84, 1903. (=) 
Limnophysa sumassi Catt, Bull. U. S. Geol. Surv., II, pp. 371, 403, 1884; 
Bull. Wash. Coll. Lab. N. H., I, p. 52, 1885.—Grtpert, Mon. U. S. Geol. Surv., I, 
pp. 210, 300, 1890. 
Lymnea sumassi HENDERSON, Univ. Col. Studies, IV, p. 180, 1907. 
Limnophysa palustris var. swmassi COOPER, #An. Rep. Cal. State Min. Bu., 
VI, p. 245, 1888. 
Lymnea catascopium var. sumassi DALL, Alaska Moll., p. 78, 1905 (part). 
Limnea! ?INGERSOLL, Bull. U. S. Geol. & Geog. Surv., L,.p. 138; 18755 Rep: 
U. S. Geol. & Geog. Surv. Terr., 1874, p. 405, 1876. 
Limnea rowelli Cxut., Journ. Conch., VI, p. 64, 1889. 
Limnea vahlii ?Wuuiteaves, Ottawa Nat., XX, p. 117, 1906. 
Lymnea rowelli HENvERsoNn, Univ. Col. Studies, IV, p. 184, 1907. 
Limnea tryoniana ?S1nGLEY, Rep. Geol. Surv. Texas, IV, p. 188, 1892; 
p. 314, 1893. 
Limnea palustris michiganensis BAKER, Trans. Acad. Sci. St. Louis, XI, 
p. 17, pl. i, fig. 5, 1901 (part) —Moll. Chi. Area, p. 276, pl. 32, fig. 5, 1902 (part). 
—BLATCHLEY and DANIELs, 27 Rep. Dept. Geol. Nat. Res. Ind., p. 596, 1903 
(part) —Daniets, |. c., p. 636 (part). 
Limneus sordidus Kuster, in Mart. & CHEMN., Syst. Conch. Cab., Giaky 2 
Limnzus, p. 58, taf. 12, figs. 15, 16, 1862—Von MarTENs, Biol. Cent. Amer. 
Moll., p. 379, 1899. 
Limnea zebra TAytor (non Tryon), vide WALKER, in letter. 
SHELL: Varying from elongate to elongate-ovate, usually rather 
thin; color varying from pale brown to almost jet black; surface dull 
1Ingersoll says “near L. Rowelli Tryon, ‘Dr. James Lewis in letter’.” These 
were probably narrow forms of palustris, or possibly elodes. Rowelli has not 
been recorded authentically from Colorado. The same may be said of the 
record of Prof. Cockerell. 
