CHIEFLT OF THE UNITED STATES. 131 



oidal, dilutely purple within ; outer lip acute, rather sinuous ; columella thin, purplish, 

 somewhat twisted. 



Proe. Acad. Nat. Sci., 1864, p. 112. 



Hah. — Cumberland Gap, E. Tenn., Major S. S. Lyon, U. S. Engineers. 



My cabinet. 

 Diam. -32, Length '82 inch. 



EemarJcs. — A single specimen only was received, with a number of other Melanidcc, 

 from Major Lyon, Other specimens may differ. This one is dark brown on the 

 exterior and purplish inside, and without bands. Other specimens may possibly differ 

 in color and have bands. It has irregular small veins over the two last whorls. It 

 is closely allied to Melania [Qoniohasis) rufescetis (nobis,) but it is wider in proportion, 

 with sutures less impressed, and has a larger aperture. It differs also in not being 

 carinate on the upper whorls, the three specimens of ruf&scens which I have being all 

 carinate. In outline it is very near to elata Gould. The aperture is abou't one-third 

 the length of the shell. 



GONIOBASIS QUADRICIKCTA. PL 23, fig. 33. 



Testa lasvi vel obsolete plicata, subfusiformi, subcrassa, lutea, quadrivittata ; spira conoidea ; suturis 

 regulariter impressis ; anfractibus instar octonis, planulatis, superne angulatis ; apertura grandius- 

 eula, ovata, intus quadrivittata ; labro acuto, aliquanto sinuoso ; columella tenui et aliquanto 

 contorta. 



Shell smooth or obscurely folded, somewhat fusiform, somewhat thick, yellow, 

 four-banded; spire conical; suturis regularly impressed ; whorls about eight, flat- 

 tened, angular towards the apex ; aperture rather large, ovate and four-banded 

 within ; outer lip acute and somewhat sinuous ; columella thin and somewhat 

 twisted. 



Operculum ovate, rather thin, light brown, with the polar point near the left 

 edge. 



Proc. Acad. Nat. Soi., 1864, p. 112. 



Hah. — Coosa and Cahaba Rivers, Alabama, Dr. Showalter; East Tennessee and 

 North Georgia, Bishop Elliott. 



My cabinet and cabinets of Dr. Showalter and Bishop Elliott. 

 Diam. -37, Length -93 inch. 



Remarlcs. — I have about two dozen specimens before me from the different 

 habitats. Those from East Tennessee are shorter and not so well characterized, 

 having less marked bands, some even being without them. The best developed 

 are from the Coosa River. Two specimens from Fannin County, Georgia, have a 

 bright yellow epidermis without bands, and may belong to a distinct species. The 

 four folds are remarkably regular in this species. The two middle ones are near to 

 each other, and the lower of the two is smaller than the upper. It is allied to grata, 

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



