NEW MELANIDyE OF THE UNITED STATES. 273 



They were supposed to be Melania neghcta, Anth., but they are not very closely allied 

 to the species which Mr. Anthony sent to me under that name, nor are they like his 

 figure, nor will they answer to his description. This species has a remarkably ex- 

 panded outer lip, unusually thickened inside of the edge. It is nearly allied to Whitei 

 herein described, but may be distinguished by being not quite so attenuate, having 

 rather more convexity in the whorls, having a larger outer lip and slightly differing 

 in the cut of the open channel at the base. The aperture is three-tenths the length 



of the shell. 



Trypanostoma Whitei. PI. 36, fig. 85. 



Testa lsevi, attenuato-eouica, crassiuscula, tenebroso-cornea ; spirii valde elevata ; suturis regulariter iin- 

 pressis; anfractibus instar novenis, convexiuseulis ; apertura parva, subrliomboidea, intus albida; 

 labro aouto, sinuoso ; columella inferne incrassata et contorta. 



Shell smooth, attenuately conical, somewhat thick, dark horn-color; spire very 

 much raised ; sutures regularly impressed ; whorls about nine, slightly convex ; aper- 

 ture small, subrhomboidal, whitish within ; outer lip acute, sinuous ; columella thick- 

 ened below and twisted. 



Proc. Acad. Nat, Sci., 1862, p. 173. 



Hal. — Lafayette County, and Marietta, Georgia, Rev. G. White ; Farland's Creek, 

 Mississippi, Dr. Spillman, and Tennessee, J. G. Anthony. 



My cabinet and cabinets of Dr. Spillman and Mr. Anthon}\ 

 Diam. -34, Length 1-8 inch. 



Remarks. — From the four habitats I have sixteen specimens. There is very little 

 difference between them. The tips are either striate or carinate. It is nearly allied 

 to Estabrooldi, herein described, but it is a smaller species, with a smoother and 

 darker epidermis, and has a smaller aperture and more twist at the base of the colu- 

 mella. The aperture is about three-tenths the length of the shell. I am indebted, 

 for many specimens, to the Rev. George White, after whom I name the species. 



Trypanostoma Estabrookii. PI. 36, fig 86. 



Testa laevi, attenuato-conica, subtenui, cornea ; spira valde elevata, superne carinata ; suturis regulariter 



inipressis; anfractibus instar denis, convexis; apertura parva, subrhomboidea, intus albida; labro 



acuto, subsinuoso ; columella alba et contorts,. 



Shell smooth, attenuately conical, rather thin, horn-color ; spire very much raised, 



carinate towards the apex ; sutures impressed ; whorls about ten, convex ; aperture 



small, subrhomboidal, whitish within ; outer lip acute, subsinuous ; columella white 



and twisted. 



Operculum subovate, dark brown, with polar point near to the basal margin. 



Proc. Acad. Nat. Sci., 18(52, p. 173. 

 Hal. — East Tennessee, President Estabrook, and Bishop Elliott ; near Cleveland, 

 Tennessee, Prof. Christy ; and Monroe Count}", Tennessee, J. Clark. 



70 



