LYMNEIDZ OF NORTH AMERICA. 343 
Length. Width. Aperture length. Width. 
27.00 11.00 14.00 7.25 mill. Type 
27.00 11.50 15.00 | a % 
Types: Collection Bryant Walker, two specimens, No. 14037. 
Typr Locatity: Lake Albert Lea, Minn. 
AntMat, JAw, Raputa and GENITALIA: Unknown. 
RancE: Minnesota. A race of the Transition life zone (humid 
division) and of the Upper Mississippian region. It has probably been 
called either reflexa or palustris by most collectors and its range may 
be widely extended when its characteristics are once known. 
RECORDS. 
Minnesota: Lake Albert Lea, Freeborn Co. (Hemphill; Walker ). 
GrotocicaL DistrRIBuTION: Unknown. 
Ecotocy: Not recorded. 
Remarks: Hemphilliana is suggestive of a widened out and short- 
ened up Galba exilis. The spire is flat-sided as in exilis, but the shell 
is wider and the aperture more expanded, as in reflexa. As far as 
known, it has been found only in Minnesota. Its chief characteristics 
are its short, wide, flat-sided spire and wide whorls. It somewhat 
resembles Galba lanceata Gould, but is wider with more flat-sided 
whorls and a longer, narrower and more oblique aperture. A good 
series of this race is a desideratum. 
Galba exilis (Lea). Plate XXXV, figure 4; plate XXXVI, 
figures 21-22; plate XX XVII, figures 1-11. 
Lymnea exilis Lea, Trans. Amer. Phil. Soc., V, p. 114, pl. 19, fig. 82, 1837; 
Obs., 1, p. 226, pl. 19, fig. 82, 1837.— WHEATLEY, Cat. Sh. U. S., p. 23, 1845.—Scup- 
per, Bull. Nat. Mus., 23, pp. 14, 201, 1885. 
Lymnea exilis ANTHONY, L. & F.-W. Sh. Cin., 1848.—SHAFFER, Shells Cin. 
Ohio (no date). 
Lymneus exilis KirtLtanp, Zool. Ohio, p. 174, 1838. 
Limneus exilis Ktsster, Conch. Cab., p. 40, taf. 7, fig. 9, 1862. 
Limnea exilis Binney, L. & F.-W. Sh. N. A., I, p. 40, fig. 50, 1865.—Sowe., 
Conch. Icon., XVIII, Lim., sp. 72, pl. 11, fig. 72, 1872.—Hazay, Mal. Blatt., i, 
III, pp. 17, 164, 1881—Jorpan, Nova Acta Ksl.-Leop.-Carol. Deutsch. Akad. 
Natur., XLV, p. 368, 1883. 
Lymnea reflexa var. exilis Jay, Cat., p. 270, 1852. 
Limnea reflexa var. exilis WALKER, Journ. Conch., II, p. 330, 1879. 
Limnea reflexa var. exilis Waker, Nautilus, VI, p. 32, 1892; Rev. Moll. 
Mich., p. 17, 1894.—Baxer, Moll. Chi. Area, II, p. 282, pl. 31; fig. 3; pl. 32; fig. 3, 
1902. 
Lymnea reflexa exilis BAKER, Bull. Ill. State Lab. N. H., VII, p. 105, 1906. 
Limnophysa reflexa attenuata BAKER (non Say), Journ. Cin. Soc. N. H., 
XIX, p. 84, 1897. 
Limnea reflera Sows., Reeve, Conch. Icon., pl. 5, sp. 32, b. 1872.—BAKER, 
Trans. Acad. Sci. St. Louis, XI, p. 17, pl. I, fig. 3, 1901. 
