254 



LAND AND FRESH-WATER SHELLS OF N. A. [PART IV. 



cannot be exactly ascertained, but I think there must be about six. 

 The aperture is quite one-half the length of the shell. It is allied to 

 M. sordida (nobis) in outline, but maj^ easily be distinguished in color 

 and the gibbous swelling on the whorls. I name this after Mr. 

 Safford, to whose kindness I owe this and some other fine specimens 

 from Tennessee. — Lea. 



The following shell appears to be in every respect identical 

 with the above : — 



Melania virens. — Shell ovate-conic, smooth, rather thick; spire 

 Fig. 494. Fig. 494ri. rather obtusely elevated, with a somewhat 

 convex outline, and with sutures decidedly 

 impressed; color light uniform green, paler 

 towards the summit; whorls five only remain- 

 ing, and indications of one lost by truncation, 

 convex; aperture rather large, elliptical, blu- 

 ish within ; columella well rounded, not per- 

 ceptibly indented, and with a small, recurved sinus at base. 

 Habitat. — Alabama. 

 Diameter, -40 (10 millim.) : length, -87 of an inch (22 millim.). 

 Length of aperture, -42 (10 millim.) ; breadth of aperture, -21 of an 

 inch (5 millim.). 



Observations. — A broad species with an outline and proportions not 

 unlike a Paludina, to which genus its pale, uniform green color seems 

 to ally it. I am not sure that it should not be referred to that genus. 

 It cannot be compared with any known species. — Anthony. 



148. G. Newberryi, Lea. 



Goniobasis Newberryi, Lea, Proc. Acad. Nat. Soi., March, 20, 18G0. .Jour. Acad. 

 Nat. Sci., V, pt. .-J, p. 300, t. 37. f. 13.i, March, 1803. Obs., ix, p. 123. Binxev, 

 Check List, No. 174. BUOT, List, p. 38. 



Description. — Shell smooth, ovately conical, rather thin, dark brown, 

 triple-banded, yellow below the sutures ; spire somewhat raised ; sut- 

 ures much impressed ; whorls six, inflated ; aperture rather small, 

 ovately rounded, whitish and banded within ; outer lip inflated ; colu- 

 mella \Yhitish, incurved. 



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

 near the inner inferior edge. 



Habitat.— Upper Des Chutes River, Oregon Territory; J. S. New- 

 berry, M.D. 



