142 LAND XSB FRESH-AVATER SHELLS OF N. A. [pART IV. 



Goniohasis Tryoniana. — Shell granulose or striate, subfusiform, 



yellowish-brown or dark brown, thick, robust, banded, rarely not 



banded: spire obtusely conical; sutures irregularly im. 

 Fig. 264. 



pressed : whorls about six, the last very large ; aperture 



very large, ovately rhomboidal, much banded within ; outer 

 lip subcrenulate, scarcely sinuous ; columella slightly bent 

 in and scarcely twisted. 



Operculum ovate, rather thick, dark brown, with the 

 polar poiut near the left margin, above the base. 

 Habitat. — Oostenaula, near Rome ; Bishop Elliott : 

 Etowah River, Georgia ; J. Postell : and Oconee River and Tennessee 

 River ; Rev. G. White. 

 Diameter, -52; length, 1-01 inches. 



Observations. — I have a number of specimens from the above vari- 

 ous habitats, and they vary very much. Some are more obtuse than 

 others, and some are tuberculate, while others are only transversely 

 striate, close strife often covering the whole surface. Usually the 

 bands do not show on the outside, often giving the surface a clouded 

 appearance, while in the interior usually the bauds are well marked 

 and sometimes number as many as eight, but sometimes the aperture 

 is entirely white ; rarely the whole is purple inside, in which case the 

 exterior is very dark brown. The base of the columella is usually 

 yellowish outside. It is somewhat allied to Melania (Goniobasis) 

 Coosaensis (nobis), but that species is more constricted and has 

 a narrow aperture; The aperture is nearly one-half the length of the 

 shell. I name this species after Mr. G. W. Tryon, Jr., who has done 

 much to promote the study of malacology.— Lea. 



Goniobasis cjranata.—ShaW granulose, striate below, fusiform, 



banded, rather thick, shining, inflated, olivaceous or reddish ; 



Fig. 2G5. 

 spire depressed ; sutures irregularly impressed ; whorls about 



five, flattish, the last one very large ; aperture large, ovately 



rhomboidal, much twisted. 



Operculum ovate, rather thin, dark brown, with the polar 

 point near to the left margin above the base. 



Habitat. — Etowah River, near Canton, Georgia ; Bishop Elliott and 

 Rev. G. White. 



Diameter, -36 ; length, -70 inch. 



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

 Elliott and the Rev. Mr. White ; some are much more granulate than 



