THE CHICAGO ACADEMY OF SCIENCES. 
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mile distant in the valley below, and here the only species yet found 
are Lymnea columella Say, Physa heterostropha Say, Planorbis bicari- 
natus Say, Vivipara decisa Say, Unio complanatus Solander, and Unio 
radiatus Lamarck. 
“The pond is two hundred feet above the bed of Farmington 
River.” 
Tryon says: “Besides the above two species I found a single 
specimen of Lymnea umbrosa Say, and several of L. desidiosa Say.” 
From the foregoing account it would appear that shurtleffi was 
a mutant of elodes, that being the only other species present (save de- 
sidiosa, which belongs to quite another group of Lymnzas). The short, 
acute spire, subcylindrical, compressed body whorl, the partly open 
umbilicus, and the long and narrow aperture are the principal charac- 
teristics of the race, which has not been seen from any other part of 
America. 
Galba reflexa! (Say). ~Plate XXX, figures 30, 31; plate XXXV, 
figures 3, 5-22; plate XX XVL., figures 1-11; plate XVIII, figure. 10. 
Lymneus reflexus Say, Journ. Phil. Acad., II, p. 167, 1821—Cooprr, Sh. 
Schoolcraft Exped., p. 154, 1834—KuirtTLaAnp, Zool. Ohio, p. 174, 1838.—Say, 
Binney Ed., p. 65, 1858. 
Limneus reflexus Say, Amer. Conch., IV, pl. 31, fig. 2, 1832—BInNEY, 
Reprint, p. 188, pl. 31, fig. 2, 1858. 
Limneus reflexus Say, Chenu, Bib. Conch., III, p. 44, pl. 7, fig. 4, 4a, 1845.— 
Kuster, Conch. Cab., p. 41, taf. 7, figs. 10-12, 1862. 
Limneus reflexa Forsts & HANLEy, Hist. Brit. Moll., IV, p. 182, 1853. 
Limnea reflexa Kennicott, Trans. Ill. State Ag. Soc. I, p. 595, 1855.— 
Utrrers, Trans. Ill. State Ag. Soc., I, p. 612, 1855—D’Ursan, Geol. Surv. Can., 
Rep. Prog., p. 242, 1859.—BeEtL, Geol. Surv. Can., Rep. Prog., p. 252, 1859.— 
Binney, Check List, p. 12, 1860.—WHITEAVES, Can. Nat. & Geol., VIII, p. 102, 
1863.—CARPENTER, Rep. Brit. Assoc., p. 673, 1864 (part)—Brinney, L. & F. W. 
Sh. N. A., II, p. 38, fig. 48, 1865—Tryon, Amer. Journ. Conch., III, p. 196, 
1867—A.pricH, N. Y. State Cab. N. H., XXII, p. 19, 23, 1868.—Currter, Kent. 
Sci. Inst., Mis. Pub., No. 1, 1868—Tryon, Con. Hald. Mon., p. 94 (68), 1872.— 
Byrnes, L. & F. W. Sh. Cin., p. 2, 1872.—Sows., Conch. Icon., XVIII, Lim., sp. 32, 
pl. 15, 1872 (not fig.) CARPENTER, Smith. Mis. Coll., p. 159, 1872.—Catkins, Proc. 
Ottawa Acad. Sci., 1874, p. 26; Cin. Quart. Journ. Sci., I, p. 243, 1874; Cin. 
Quart. Journ. Sci., I, p. 323, 1874.—Yarrow, U. S. Geol. Surv., W. 100th Merid., 
V, p. 942, 1875 —AucHEy, An. Rep. U. S. Geol. & Geog. Surv. Col., p. 268, 
1876—Pratt, Proc. Daven. Acad. Sci., I, p. 166, 1876.—WiuTTER, Quart. Journ. 
Conch., I, p. 386, 1878—WatckeEr, Journ. Conch., II, p. 330, 1879.—Sretn, Ind. 
Dept. Stat. & Geol., 1880, p. 458—Hazay, Mal. Blatt., i1, III, p. 17, 160, 1881.— 
tMany of the following references to reflexa undoubtedly include also such 
species and varieties as elodes, exilis and kirtlandiana, as well as others of this 
group, but there is no way of verifying the majority of them, 
