28 Calvin Goodrich 



Unid^ntifiablb Species 

 Gyrotoma habylonicum (Lea) 



Schizostoma Babylonicum Lea, Proc. Amer. Phil. Soc, IV, 1845, p. 167; Trans. 

 Amer. Phil. Soc, X. 1848. p. 04. pl. ix, fig. 514; Obs. Gen. Unio, IV. 1848. p. Q4, 

 pi. ix, fig. 54; Journ. Acad. Nat. Sci., Phila., V, n. s., 1862, p. 248; Obs. Gen. Unio, IX, 

 1863, p. 70; Lewis, Amer. Journ. Conchol., V, 1869-70, p. 166; Tryon, Monog. Strepom., 

 1873, pp. XV, 369; Lewis, Fauna of Ala., 1876, p. 22. 



Gyrotoma Babylonicum Lea, Chenu, Man. de Conchyl., I. 1859, f. 2, 021 ; H. & A. 

 Adams, Genera, I, 1858, p. 305; Binney, Check List, i860, No. 307; Brot, List, 1862, 

 p. 27; Paetel. Cat, 1888, p. .-^61. 



Gyrotoma lacta incisa (Lea), Hannibal, Proc. Malacol. Soc, X, 1912, p. 182. 



Description : Shell striate, somewhat fusiform, rather thick, chestnut-color ; spire 

 obtusely conical ; sutures impressed ; whorls flattened ; fissure small ; aperture large, 

 elliptical, somewhat flesh-colored within; columella smooth, angular at the base, thick- 

 ened above. — Lea. 



This species was described from one specimen and as from Tuscaloosa. 

 Like Lea's funiculatum and his showalterii of 1864 it is a deformity and 

 broken. The shell is now in the National Museum, being No. 119, 408. It 

 is very much shouldered and is lacking in color bands. The fissure is slightly 

 more oblique than in specimens of pagoda having unusually obHque fissures. 

 It is much more oblique than in the case of pmnilum which the shell of 

 babylonicum resembles. While the mollusk does not suggest incisiim in 

 form, the fissure is that of many specimens of this species. I feel tinable 

 to decide as to which of these species babylonicum belongs. The chief char- 

 acteristic upon which its specific position was established does not obtain 

 among thousands of Gyrotoma examined. It is unquestionably an abnor- 

 mal shell. If it should be decided that babylonicum is the same as pumilum 

 the latter species, described in i860, will go into the synonymy. 



Hinkley (2, p. 41) made this shell a synonym of wetuinpkaensls and the 

 latter the same as pyramidatum-. Whatever babylonicum may be it belongs 

 to the members of the genus occurring at Wetumpka, while pyramidatum 

 is the first species appearing in the river and does not go down to Elmore 

 County. 



Gyrotoma cylindraceum (Mighels) 



Schizostoma cylindracea Mighels, Bost. Proc, I, Oct. 1844, P- 189; Tryon, Monog 

 Strepom.. 1873. PP. xv, .361 ; Lewis. Fauna of Ala.. 1876, p. 23 ; Hinklev, Nautilus, 

 XVIII, 1904, p. 40. 



Gyrotoma cylindracea Migh., H. & A. Adams, Genera, I, 1858, p. 305. 



Gyrotoma cylindracea Mull., Binney, Check List, i860, No. 315. 



Gyrotoma cylindracea Gould, Brot. List, 1862, p. 27; Paetel, Cat., 1888. p. ^,62. 



Gyrotoma olivula excisa (Lea), Hannibal, Proc. Malacol. Soc, X, 1912, p. 181. 



Description: Shell nearly smooth, cylindrical, thick, with slight, revolving un- 

 dulations ; epidermis olivaceous ; spire ovate-conic, eroded ; whorls three or four, flat- 

 tened, shouldered; suture distinct, aperture oval; fissure deep and wide. — Mighels. 



The author gave Warrior River, Alabama, as the locality for his species. 

 Mr. C. W. Johnson informs me that the Mighels collection was destroyed 

 in the fire which burned the quarters of the Portland Society of Natural 

 History in 1854, another fire in 1866 destroying a second collection. The 



