NEW MELANIDiE OF THE UNITED STATES. 351 



Diam - ' 34 ' Length -75 inch. 



Remarlcs.— Two specimens of this pretty little species were found 'among many 

 shells long since given to me by my friend, the late Prof. Vanuxem. It is allied 

 to Vamixemii (nobis), but may at once be distinguished by being without bands, 

 and being a larger and yellow species. The aperture is rather more than one-third 

 the length of the shell. 



Trypanostoma Carolinense. PI. 39, tic:. 221 



Testa lievi, couoidea, subcrassa, cornea; spira obtuso-conica; suturis imprcssis ; anfractibus septenis, 

 convcxiusculis ; apertura parviuscula, rhomboidea, intiis albida vel fuscescente ; labro acuto 

 sinuoso ; columella incurva incrassata et contorta. 



Shell smooth, conical, rather thick, horn-color ; spire obtusely conical ; sutures im- 

 pressed ; whorls seven, slightly convex ; aperture rather small, rhomboidal, whitish 

 or brownish within ; outer lip sharp, sinuous ; columella bent in, thickened and 

 twisted. 



Proc. Acad. Nat. Sci., 1S62, p. 27o. 



Hah. — South Carolina, Prof. L. Vanuxem. 



My cabinet. 

 Diam. -34, Length -76 inch. 



Remarks. — Among the mollusca brought long since by my friend, the late Prof. 

 Vanuxem, were about a dozen of this little species. The district of the State 

 was not given with the habitat. In some of the specimens there is a disposition to 

 put on a purplish mark on the inside of the base of the columella. In most of 

 the specimens there is a pale light line immediately below the suture. This species 

 is allied to simplex, herein described, but may be distinguished by its beino- more 

 slender, being a darker horn-color, and in having a more elongated aperture. The 

 aperture is about one-third the length of the shell. 



Trypanostoma Henryanttm. PI. 39, fig. 222. 



Testa carinata, attenuate, niueronata, termi, diaphana, pallido-cornea, evittata ; spirit regulariter atteuu- 

 ato-conica; suturis regulariter impressis; anfractibus denis, planulatis, ultimo medio re<mlariter 

 carinatis et striatis; apertura parva, subrliomboidea, intiis albida; labro valde acuto, sinuoso; 

 columella incurva et valde contorta. 



Shell carinate, attenuate, sharp-pointed, thin, semitransparent, pale horn-color, 

 without bands ; spire regularly attenuately conical ; sutures regularly impressed ; 

 whorls ten, flattened, the last one regularly carinate and striate in the middle; 

 aperture small, subrhomboidal, whitish within ; outer lip very sharp and sinuous ■ 

 columella bent in and very much twisted. 

 Proc. Acad. Nat. Sci., 1S62, p. 272. 



Hab.— Tennessee V Smithsonian Institution. 



