332 THE CHICAGO ACADEMY OF SCIENCES. 



mile distant in the valley below, and here the only species yet found 

 are Lymnaa 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 Lymncea 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 Lymnaeas). 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 1 (Say). Plate XXX, figures 30, 31 ; plate XXXV, 

 figures 3, 5-22; plate XXXVL, figures 1-11; plate XVIII, figure 10. 



Lymneus reflexus SAY, Journ. Phil. Acad., II, p. 167, 1821. COOPER, Sh. 

 Schoolcraft Exped., p. 154, 1834. KIRTLAND, Zool. Ohio, p. 174, 1838. SAY, 

 Binney Ed., p. 65, 1858. 



Limneus reflexus SAY, Amer. Conch., IV, pi. 31, fig. 2, 1832. BINNEY, 

 Reprint, p. 188, pi. 31, fig. 2, 1858. 



Limn&us reflexus SAY, Chenu, Bib. Conch., Ill, p. 44, pi. 7, fig. 4, 4a, 1845. 

 KUSTER, Conch. Cab., p. 41, taf. 7, figs. 10-12, 1862. 



Limn&us reflexa FORBES & HANLEY, Hist. Brit. Moll., IV, p. 182, 1853. 



Limnaa reflexa KENNICOTT, Trans. 111. State Ag. Soc., I, p. 595, 1855. 

 ULFFERS, Trans. 111. State Ag. Soc., I, p. 612, 1855. D'URBAN, Geol. Surv. Can., 

 Rep. Prog., p. 242, 1859. BELL, Geol. Surv. Can., Rep. Prog., p. 252, 1859. 

 BINNEY, Check List, p. 12, I860. WHITEAVES, Can. Nat. & Geol., VIII, p. 102, 

 1863. CARPENTER, Rep. Brit. Assoc., p. 673, 1864 (part). BINNEY, L. & F. W. 

 Sh. N. A., II, p. 38, fig. 48, 1865. TRYON, Amer. Journ. Conch., Ill, p. 196, 

 1867. ALDRICH, N. Y. State Cab. N. H., XXII, p. 19, 23, 1868. CURRIER, 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. SOWB., Conch. Icon., XVIII, Lim., sp. 32, 

 pi. 15, 1872 (not fig.). CARPENTER, Smith. Mis. Coll., p. 159, 1872. CALKINS, 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. AUGHEY, An. Rep. U. S. Geol. & Geog. Surv. Col., p. 268, 

 1876. PRATT, Proc. Daven. Acad. Sci., I, p. 166, 1876. WITTER, Quart. Journ. 

 Conch., I, p. 386, 1878. WALKER, Journ. Conch., II, p. 330, 1879. STEIN, Ind. 

 Dept. Stat. & Geol., 1880, p. 458. HAZAY, Mai. Blatt, ii, III, p. 17, 160, 1881. 



1 Many 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. 



