LYMN IDA OF NORTH AMERICA. 377 
Ecotocy: Not recorded. 
Remarks: This small and enigmatical Lymnzid has been a puz- 
zle for several years. It was at first thought to be a small form of 
the protean palustris but that species does not range as far south as 
Virginia, and the present form is quite unlike the large shells of the 
northern states. It is apparently a new species, though belonging to 
the palustris group of the subgenus Stagnicola. 
Neopalustris may be distinguished from palustris by its uniformly 
smaller size, its more obese body whorl, rounder aperture, narrower 
inner lip and particularly by the long, flat slope of the upper part of 
the whorls. It bears a superficial resemblance to some small forms of 
palustris from England. <A special search should be made for this 
species in Virginia and adjacent states. 
GROUP OF GALBA CATASCOPIUM. 
Galba pallida (Adams). Plate XL, figures 1-5. 
Limnea pallida Avams, Amer. Journ. Sci., i, XXXIX, p. 374, 1840; Bost. 
Journ. Nat. Hist., III, p. 324, pl. 3, fig. 13,°1840; Amer. Journ. Sci., i, XL. opt 
268, 1841; Thomp. Hist. Vt., p. 153, 1842—Bett, Geol. Surv. Can., Rep. Prog., 
p. 252, 1859.—Binney, Check List., p. 12, 1860; L. & F.-W. Sh. N. A, II, p. 60, 
fig. 95, 1865——Morcu, Amer. Journ. Conch., IV, p. 35, 1868.—DatL, Proc. Bost. 
Soc. N. H., XIII, p. 248, 1870—Goutp, Inv. Mass., Ed. Binney, p. 481, fig. 
733, 1870.—JEFFREYS, Ann. Mag. N. H., ser. iv, X, p. 247, 1872.—Sows., Conch., 
Icon., XVIII. Lim., sp. 81, pl. 12, fig. 81 a, b, 1872.—Tryon, Con. Hald. Mon., 
p. 106 (80), 1872.—JrFrreEys, Journ. Conch., I, p. 16, 1874—Cressrn, Mal. Blatt., 
n. s., III, p. 82, 1881—MarsHatL, Rep. N. Y. State Mus., XLVII, p. 64, 1893; 
New York at World’s Fair, p. 512, 1894—Lertson, Bull. N. Y. State Mus., 
LXXXVIII, p. 55, 1905 (part). 
Limnea pallida Hatp., Mon. Lim., p. 45, pl. 13, figs. 11-13, 1842.—DeKay, 
Zool. N. Y., p. 69, pl. 4, fig. 67, 1843. 
Lymnea pallida WuHeEatLEy, Cat. Sh. U. S., p. 23, 1843—Jay, Cat., p. 270, 
1852.—Scupper, Bull. Nat. Mus., 23, p. 201, 1885. 
Limnophysa pallida Tryon, Amer. Journ. Conch., I, p. 255, 1865.—LeEwis, 
Bull. Buf., Soc. Nat. Sci, II, p. 135, 1874 (part). 
Limneus pallidus Kuster, Conch. Cab., p. 49, taf. 11, figs. 1-4, 1862. 
Limnea pallida’ Wuireaves, Can. Nat. & Geol., VIII, pp. 51, 103, 1863 — 
BEAUCHAMP, L. & F.-W. Sh. Onondaga Co., p. 4, 1886.—CKL., Journ. Conch., 
VI, p. 257, 1890.—Taytor, Ottawa Nat., VIII, p. 148, 1895. 
Lymnea pallida Lewis, Proc. Phil. Acad., p. 102, 1872. 
SHELL: Ovate-fusiform, elongated, rather solid; periostracum 
pale yellowish horn, sometimes semi-transparent; surface shining, 
growth lines heavy and very well marked, crowded, crossed by fine 
impressed spiral lines; whorls 5 to 51%, flatly convex, the body whorl 
1The following references are very doubtful; it has not been possible to 
verify them as in most cases the original specimens have not been preserved. 
Some of the records may have been based on the true pallida, while others 
undoubtedly refer to forms of obrussa, catascopium or palustris. 
