298 THE CHICAGO ACADEMY OF SCIENCES. 
in having bicuspid lateral teeth. The habitat of Stagnicola is quite 
different as a rule from that of the smaller Lymnzas, which prefer 
the banks of small streams and shore debris, where they may crawl 
out of water and remain in the air, while Stagnicola is partial to stag- 
rant pools, ponds and lakes, and is seldom found out of the water. 
The name Stagnicola was first used by Leach in 1819 in his proof- 
sheets. Jeffreys subsequently cited the name, in 1830, in Linn. Trans., 
using Limnea palustris as the type. In 1833 Fitzinger, in his Syst. 
Verz., established the name Limnophysa, but as he used the same type 
(L. palustris) as that selected for Stagnicola, Leach’s name must stand. 
Brehm used the name in Ornithology in December, 1830, but as Jef- 
frey’s paper was published in May, Brehm’s name becomes obsolete. 
The name Omphiscola was used by Rafinesque in 1819 for a group 
of shells which are thus described: “Differs from Lymnula (Lymnea’ 
Auct.) by its inferior lip being detached from the columella and divided 
from it by a long umbilicus. Family of Limnide. Many lacustrine 
and fluviatile species.” As many of the species of Stagnicola are fre- 
quently found with the inner lip thus separated (particularly reflexa), 
I quite agree with Dr. Dall that Omphiscola is the same as Stagnicola. 
As no type was cited by Rafinesque and as he lists no species under 
the genus, the name cannot be used, although it 1s older than either 
Stagnicola or Limnophysa. The characters used by Rafinesque have 
no importance, even specifically. 
GROUP OF GALBA PALUSTRIS. 
Galba palustris (Miller). Plate XXVI, figures 17-37; plate 
XXXIII, figures 1-25; plate XXXIV, figure 20. 
Buccinum palustre MULLER, Verm. Terr., II, p. 131, 1774—Baker, Science, 
n. s., XXVII, p. 943, 1908. 
Helix palustris GEMLIN, Syst. Nat., p. 3658. 
Limnea palustris Sows., Tank. Cat., p. 42, 1826—GouLp, Bost. Journ. 
Nat. Hist., III, p. 488, 1841—HaALpEMAN, Bost. Journ. N. H., IV, p. 468, 1844; 
Rupp’s Hist. Lancas. Co., p. 480, 1844.—Cpr., Rep. Brit. Asso., 1856, p. 222.— 
Binney, Check List, p. 12, 1860; Proc. Phil. Acad., 1861, p. 330—WHITEAVES, 
Can. Nat. & Geol., VI, p. 458, 1861—W4ILLIAMSON, Can. Journ., n. s. VI, p. 
327, 1861—WuHuitTEAvEs, Can. Nat. & Geo., VIII, p. 51, 1863—Commis. Geol. 
Can., p. 966, 1864—Cpr., Rep. Brit. Asso., 1864, p. 674—Brnney, L. & F. W. 
Sh. N. A,, II, p. 45, figs. 61, 65, 66, 1865——Tryon, Amer. Journ. Conch., III, 
p. 196, 1867; Amer. Journ. Conch., IV, p. 151, 1868—Currier, Kent. Sci. Inst., 
Mis. Pub., No. 1, 1868.—Coorer, Amer. Nat., III, p. 297, 1869.—Datt, Ann. Lye. 
Nat. Hist., IX, p. 340, 1870—Byrnes, Land & F. W. Sh. Cin., p. 2, 1872—Cprr., 
Smith. Mis. Coll., 1872, p. 160.—Tryon, Con. Hald. Mon. p. 97 (71), 1872; 
Proc. Phil. Acad., 1873, p. 286—SmitTH, Rep. U. S. Fish. Com., p. 701, 1874.— 
CaLkins, Cin. Quart. Journ. Sci., I, pp. 243, 323, 1874—-Yarrow, U. S. Geog. 
Surv. West 100th Merid., V, p. 942, 1875—GrLperT, 1. c., III, p. 100, 1875.— 
