2G8 LAND AND FRESII-WATER SHELLS OF N. A. [PART IV. 



Observations. — A single specimen of this siDecics was sent to me 



some years since by ^Mr. Anthony, who collected it in Tennessee, but 



I am not aware in what part. I then thou2;ht it miirht be a 

 Fig. 512a. » » 



variety of Melania (Goniobasis) perfusca (nobis), but it is 



a smaller species with a longer aperture. It has the smooth, 



dark chestnut-brown and polished epidermis of Ildania 



(Goniobasis) nilens (nobis), but is larger and has a longer 



aperture. In the specimen before me there is a line of light 



brown below the suture. On the inside are two, obscure, brownish 



bands, but none are apparent on the outside. The aperture is nearly 



half the length of the shell. I name this after Mr. J. G. Anthony, 



who kindly sent it to me with other specimens. — Lea. 



168. G. Cahawbensis, Lea. 



Melania Cahaicbensis, Lea, Proc. Acad. Nat. Sci., \). 121, 1801. 



Goniobasis Cahawbensis, Lea, Jour. Acad. Nat. Sci., v, pt. 3, p. 223, March, 1863. 

 Obs., ix, p. 45. 



Description. — Shell smooth, somewhat fusiform, raised conical, 

 pointed, rather thin, dark horn-color, ol:)scurely banded ; spire some- 

 what raised ; sutures lino-like ; whorls eight, flattened above, the 



last rather large ; aperture rather small, ovate, whitish or 



* ' Fiff.5126. 



yellowish within; outer lip acute; columella arcuate, some- 

 what rounded at the base. 



Habitat. — Cahawba River, Alabama; E. E. Showalter, M.D. 



Diameter, -42; length, -84 of an inch. 



Observations. — This is a regularly formed, graceful species, 

 with very obscure bands. In three of the specimens these 

 bands are scarcely noticeable, but the fourth, which is the youngest, 

 has three bands well defined within the aperture. It is nearly allied 

 to Melania germana, Anth., but it is more elongate and has not the 

 cariuation of the middle of tiie whorl, nor the rhomboidal aperture. 

 The aperture is more than one-third the length of the shell. The 

 apical whorls are carinate. — Lea. 



169. G. Gabbiana, Lra. 



Goniobasis Gabbiana. LEA, Proc. Acad. Nat. Sci., p. 205, 1802. Jour. Acad. Nat. 

 Sci., V, pt. 3, p. 304, t. 37, f. 141, March, 1SG3. Ob.s. ix, p. 120. 



Description. — Shell smooth, subfusiform, rather thin, horn-color, 

 without bands ; spire slightly elevated, sharp-pointed ; sutures im- 



