314 NEW MELAiraXffii OF THE UNITED STATES. 



My cabinet and cabinet of Mr. Pybas. 

 Diani. -31, Length -82 inch. 



Remarks. — I found four specimens among numerous MelanidcB sent to me by Mr. 

 Pybas. It is allied to Melania (Goniobasis) Deshaysiana (nobis), but it is more slen- 

 der, has bands and has not the granulations of that shell on the upper part of the 

 whorls. It differs from Lyonii herein described, in having a longer aperture, being 

 thicker, not being striate, and in having bands. It is evident that this species usu- 

 ally has four well marked revolving bands, the two middle ones being approximate. 

 The broadest is at the bottom. In this character it is very like to Melania {Gonio- 

 basis) grata, Anth., and it reminds one of Melania (Goniobasis) laqueata, Say. In 

 one of the specimens an indistinct fifth band is observable. The folds are not very 

 strongly marked and do not extend to the body whorl. They are not very close, 

 are slightly curved and incline to the left. The aperture is more than one-third the 

 length of the shell. I dedicate this species with great pleasure to Mr. B. Pybas, of Tus- 

 cumbia, who has sent me many new mollusca from his vicinity. 



Goniobasis Duttonii. PI. 37, fig. 158. 



Testa plicata, conoidea, dilute rufo-lutea, crassa, bivittata ; spira conoidea ; suturis irregulariter inipressis ; 

 anfractibus instar septenis, subconvexis ; apertura ovato-rhomboidea, intus alb 9, et lato-vittata ; labro 

 aeuto, sinuoso ; columella incurva, incrassata et valde contorta. 



Shell folded, conoidal, pale reddish yellow, thick, double-banded ; spire conoidal ; 

 sutures irregularly impressed ; whorls about seven, somewhat convex ; aperture 

 ovately rhomboidal, white and double-banded within ; outer lip acute, sinuous ; colu- 

 mella bent in, thickened and very much twisted. 

 Proc. Acad. Nat. Sci., 1862, p. 266. 

 Jffab. — Maury County. Tennessee, T. K. Dutton ; Grayson County, Kentucky, 

 S. S. Lyon. 



My cabinet and cabinet of Mr. Lyon. 

 Diam. -38, Length -80 inch. 



Remarks. — This is a well marked species, allied to Pybasii, herein described, and 

 to Melania ( Goniobasis) laqueata, Say. It is a stouter shell than either, and may at 

 once be distinguished from them by its two well defined brown bands, the upper one 

 of which is the larger. The folds are rather indistinct, close, not curved, and inclining 

 to the right. The specimen from Maury County, Tennessee, is more robust, and has 

 a shorter spire than that from Kentucky. The aperture is about three-eighths the 

 length of the shell. I name this after Mr. T. R. Dutton, who sent it to me long 

 since with other mollusca from Tennessee. This must not be confounded with the 

 shell which I called Melania Duttoniana, Trans. Am. Phil. Soc. vol. 8, pi. 6, which 

 is really a LUhasia. 



