302 THE CHICAGO ACADEMY OF SCIEN< 



1872.— Adams, Thomp. Vt, p. 169, 1842.— Morch, Amer. Journ. Conch.. IV. 

 1868. 



Limnceus expansus Klster, Conch. Cab., I, p. 39, taf. 7, figs. » 



Limnophysa expansa Tryox, Amer. Journ. Conch., I, p. 251, 1865. 



Lymncca expansa Wheatley, Cat. U. S. Shells, p. 23, 1845. — Jay, Cat., p. 

 269, 1852. 



Limncea palustris expansa Ckll., Nautilus, XVI. p. 96, 1902. — Baker, Moll. 

 Chi. Area, II, p. 277, 1902. 



Limnaus sufflatus Calkins, Ms. Baker, Moll. Chi. Area., p. 277, pi 

 fig. 2, 1902. 



Limnea fragilis Haldemax, Mon. Lim., p. 20, pi. 6, pi. 15, fig. 1, 1842 (not 

 of Linne).— DeKay, Moll. X. Y., p. 68, pi. 4, fig. 68, 1843.— Lapham, Trans. 

 Wis. State Ag. Soc, II, p. 368, 1853.— Kexxicott, Trans. 111. State Ag. Soc, I, 

 p. 595, 1855. — Hambach, Bull. Geol. Surv. Mis... I, p. 60, 1890. 



Lymncea fragilis Jay, Cat., p. 269, 1852. 



Limncca fragilis Ulffers, Trans. 111. State Ag. Soc, I, p. 612, 1855. — 

 Swallow, An. Rep. Geol. Surv. Missouri, II, p. 215, 1855. — Lapham, Proc. Phil. 

 Acad., 1860, p. 155.— Gabb., Proc. Phil. Acad., 1861, p. 309.— Blaxd & Cooper, 

 Ann. X. Y. Lye. X. H.. VII, p. 370, 1862.— Tryox, Proc. Phil. Acad., - 1863, 

 p. 149. — Cpr., Rep. Brit. Asso., 1864, p. 630.— Currier, Kent. Sci. Inst.. Mis. Pub. 

 Xo. 1, 1868. — Lewis, Amer. Journ. Conch., VI, p. 86, 1870. — Cpr., Smith. Mis. 

 Coll., 1873, p. 116.— Hartmax, Moll. Chester Co., Penn. 



Limnophysa fragilis DeCamp, Kent. Sci. Inst, Mis. Pub.. Xo. 5, p. 8, 1881. 



Lymncea fragilis var. corvus Park., Jay - , Cat., ed. 4, p. 269, 1852. 



Lymnca nuttalliana Lea, Proc. Amer. Phil. Soc, II, p. 33, 1841; Trans. 

 Amer. Phil. Soc, IX, p. 9, 1844; Obs.. IV, p. 9, 1848; Hayden's expl. Xeb., p. 

 724. 1859; Journ. Phil. Acad., VI, p. 160. 1866; Obs., XL p. 116, 1867. 



Lymncea nuttalliana Wheatley, Cat. L". S. Shells, p. 23, 1845. — Jay, Cat., 

 p. 270. 1852. — Scudder, Bull. Xat. Mus., 23, pp. 33, 43, 201, 1885.— Baker, Amer. 

 Nat., XL, pp. 329, 330, 1906. 



Limncea nuttalliana Carpexter, Rep. Brit. Asso.. 1S56. p. 198. 316. — Cpr., 

 P. Z. S., 1856, pp. 209, 220.— Bixxey', L. & F. W. Sh.. X. A.. II. p. 4.5. fig. 62, 

 1865. — Tryox, Amer. Journ. Conch., Ill, p. 196, 1867. — Cooper, Proc. Cal. Acad. 

 Sci., IV, p. 96, 1870.— Sowb., Conch. Icon., XVIII, Lim. sp. 70, pi. 11, figs. 70, 

 a, b, 1872 (the figures look like rozcelli Tryon).— Shimek, Bull. Lab. X. H. 

 Iowa Univ., I, p. 68, 1888.— Stearxs, Proc Xat. Mus.. XIV, p. 101. 1891 ; X. Am. 

 Fauna, VII, p. 274, 1893.— Taylor, Ottawa Xat., VTII, p. 148, 1895.— Stearxs. 

 Proc. Xat. Mus.. XXIV. p. 291, 1901.— Elrod., Nautilus, XV, p. 111. 1902 : Bull. 

 Univ. Mont., Biol. Series, Xo. 3, p. 173, 1902.— Pilsbry, Xautilus. XVII, p. 84, 

 1903. 



Limnoeus nuttallianus Kuster, Conch. Cab., I, p. 38, pi. 7, fig. 5, 1862. 



Limnea nuttalliana Carltox, Proc. Cal. Acad. Sci., IV, p. 51, 1869. — Cat. 

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



Limnophysa nuttalliana Tryox, Amer. Journ. Conch.. I, p. 250, 1865. — 

 Cooper, Proc. Cal. Acad.. IV, p. 153, 1870.— Call, Bull. Wash. Coll. Lab. X. H., 

 I, p. 52, 1885.— Keyes, Bull. Essex Inst.. XX. p. 70, 1888. 



Limncea palustris nuttalliana Baker, Moll. Chi. Area. II, p. 276, pi. 31, 

 fig. 6, 1902. 



