LYMN^ID^E OF NORTH AMERICA. 303 



Limncea palustris var. nuttalliana Wood, Nautilus, p. 56, 1891. — Keep, West. 

 Amer. Sh., p. 314, 1904. 



Limnophysa palustris var. nuttalliana Cooper, Zoe., I, p. 196, 1890. 



Lymncea palustris var. nuttalliana Dall, Alaska Moll., p. 76, fig. 57, 1905. 



Lymncea 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, pi. 34, fig. 73, 1866; 

 Obs., pp. 115, 117, pi. 34, fig. 73, 1867.— Scudder Bull. Nat. Mus., 23, pp. 82, 

 149, 201, 1885.— Roberts, Rep. U. S. Geol. Surv. Wyoming, 1871, p. 468. 



Limnea haydeni Ingersoll, Bull. U. S. Geol. & Geog. Surv., I, p. 138, 1875; 

 Rep. U. S. Geol. & Geog. Surv. Terr., 1876, p. 405. 



Limncea haydeni Binney, Check List, p. 12, 1860; L. & F. W. Sh. N. A., 

 II, p. 44, fig. 59, 1865.— Tryon, Con. Hald. Mon., p. 98 (72), pi. 17, fig. 6, 1872.— 

 Walker, Nautilus, VI, p. 33, 1892 ; Rev. Moll. Mich., 1894, pp. 18, 22. 



Limnophysa haydeni Tryon, Amer. Journ. Conch., I, p. 251, 1865. — Call, 

 Bull. Wash. Coll. Lab. N. H., I, p. 52, 1885. 



Limnceus haydeni Clessin, Kuster, Conch. Cab., p. 390, taf. 53, pi. 10, 1886. 



Limncea sumassi Tryon, Con. Hald. Mon., p. 97 (71), pi. 17, 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. 



Limncea near sumassi Pilsery, Nautilus, XVII, p. 84, 1903. (?) 



Limnophysa sumassi Call, Bull. U. S. Geol. Surv., II, pp. 371, 403, 1884; 

 Bull. Wash. Coll. Lab. N. H., I, p. 52, 1885.— Gilbert, Mon. U. S. Geol. Surv., I, 

 pp. 210, 300, 1890. 



Lymncea sumassi Henderson, Univ. Col. Studies, IV, p. 180, 1907. 



Limnophysa palustris var. sumassi Cooper, J An. Rep. Gal. State Min. Bu., 

 VI, p. 245, 1888. 



Lymncea catasc'opium var. sumassi Dall, Alaska Moll., p. 78, 1905 (part). 



Limnea 1 PIngersoll, Bull. U. S. Geol. & Geog. Surv., I, p. 138, 1875; Rep. 

 U. S. Geol. & Geog. Surv. Terr., 1874, p. 405, 1876. 



Limncea rowelli Ckll., Journ. Conch., VI, p. 64, 1889. 



Limncea vahlii PWhiteaves, Ottawa Nat., XX, p. 117, 1906. 



Lymncea rowelli Henderson, Univ. Col. Studies, IV, p. 184, 1907. 



Limncea tryoniana ?Singley, Rep. Geol. Surv. Texas, IV, p. 188, 1892 ; 

 p. 314, 1893. 



Limncea palustris michiganensis Baker, Trans. Acad. Sci. St. Louis, XI, 

 p. 17, pi. i, fig. 5, 1901 (part).— Moll. Chi. Area, p. 276, pi. 32, fig. 5, 1902 (part). 

 — Blatchley and Daniels, 27 Rep. Dept. Geol. Nat. Res. Ind., p. 596, 1903 

 (part).— Daniels, 1. c, p. 636 (part). 



Limnceus sordidus Kuster, in Mart. & Chemn., Syst. Conch. Cab., ed. 2, 

 Limnseus, p. 58, taf. 12, figs. 15, 16, 1862. — Von Martens, Biol. Cent. Amer. 

 Moll, p. 379, 1899. 



Limncea zebra Taylor (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 



1 Ing-ersoll 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. 



