GONIOBASIS. 



235 



Goniubasis Udicensis.— Shell carinate, obtusely conical, rather thin, 

 horn-color, without bands ; spire obtuse ; sutures impressed ; whorls 

 about six, flattened; aperture rather large, ovately rhomboidal, whit- 

 ish within ; outer lip acute, somewhat sinuous ; columella bent in 

 and somewhat twisted. 



Oparculum ovate, light brown, with the polar point near to the left 

 margin above the base. 



Habitat.— JAttlQ Uchee River, below Columbus, Ga. ; G. Ilalleubeck. 



Diameter, •24; length, -58 of an inch. 



Observations. — This is a very small species, nearly allied to Melania 

 (Goniubasis) proxima, Say, but may be distinguished by its smaller 

 size, its lighter color, its. shorter spire, and its having a raised 

 line above and below the carina on the upper whorls. The aper- 

 ture is rather more than one-third the length of the shell. — Lea. 



Goniobasis Barrattii. — Shell carinate, subfusiform, rather 

 thin, greenish or reddish horn-color,, obscurely banded, or 

 without bands ; spire obtusely conical ; sutures very much impressed ; 

 whorls seven, slightly convex, folded at the apex; aperture rather 

 large, subrhoraboidal, whitish or obscurely banded within; outer lip 

 acute, scarcely sinuous ; columella somewhat bent in and twisted. 



Habitat.— AhheviWe District, South Carolina; J. P. Barratt, M.D. 



Diameter, -25; length, -53 of an inch. 



Observations. — A number of specimens were sent to me by Dr. 



Barratt many years since. In outline all the specimens are very 



much the same, but they differ in some having the apical 

 Fig. 460. 



whorls obscurely plicate, while others are only carinate. 



All the specimens are carinate down to the last whorl. In 

 very few specimens can the bands be seen on the outside, but 

 usually two bunds are visible on the inside near the middle. 

 In some specimens four bands are observable. Usually the four 

 apical whorls are obscurely plicate. The apertui-e is more than one- 

 third the length of the shell. It is nearly allied to Melania (Gonio- 

 basis) te7iebrosa (nobis), but it is more slender, has higher carinae and 

 is plicate. I dedicate this to the late Dr. Barratt, from whom I have 

 formerly received many interesting specimens of the moUusca of 

 South Carolina and Georgia. — Lea. 



Goniobasis Catawbcca. — Shell short, conic, inflated ; the whorls 

 flat, the body convex, bright green polished ; sutures well impressed ; 

 whorls Ave or six, encircled in the middle with two raised lines; 



