• ■ 

 CHIEFLY OF THE UNITED STATES. 163 



spire obtuse ; sutures very much impressed ; whorls very convex ; aperture nearly 



round and rather large ; outer lip expanded ; columella thickened and impressed in 



the middle. 



Proc. Acad. Nat. Sci., 1864, p. 113. 



Hah. — Georgia, Major John Le Conte. 



My cabinet. 

 Diam. -19, Length -30 ? inch. 



Remarhs. — A single imperfect specimen was brought from Georgia many years 

 since by my late friend Major John Le Conte, U. S. Engineer Corps. The two or 

 three upper whorls are wanting ; there were probably five in all. It was not de- 

 scribed at the time it was first brought, with the expectation of more and better 

 specimens being found. I have great pleasure in dedicating it to my late friend, who 

 was unremitting during his life in the promotion of the natural science of this 

 country. This little species is closely allied to curta, (nobis,) but it may easily be 

 distinguished by being more inflated, in having a rbunder aperture, and being a 

 thicker shell. The aperture reminds one of the genus Bulimus, and in this respect 

 resembles hulimoides, (nobis). The aperture is about one-half the length of the shell. 



Phtsa Traskii. PL 24, fig. 80. 



Testa valde inflata, parum obliqua, striata, subdiaphana, tenuissima, pallido-castanea ; splra parum pro- 

 ducta, apice acuto ; suturis impressis ; anfractibus senis, ultimo pergrandi et valde inflata ; apertura 

 late expanso ; labro acuto, subter marginem fusco-vittato ; columella medio impressa et magna plica 

 induta. 



Shell very much inflated, somewhat oblique, striate, semi-transparent, very thin, 

 pale chestnut color ; spire somewhat produced, pointed at the apex ; sutures im- 

 pressed ; whorls six, the last one very large and very much inflated ; aperture 

 broadly expanded ; outer lip acute and within the margin brown banded ; columella 

 impressed in the middle and furnished with a large fold. 

 Proc. Acad. Nat Sci. 1864, p. 11.5. 



Hob. — Rio Los Angelos, California, J. B. Trask, M. D. 



My cabinet and cabinet of Dr. Trask. 

 Diam. -45, Length -76 inch. 



Remarlcs. — This species is of a larger size than usual, having somewhat the outline 

 of an inflated hetervstropha, Say, but differs in being more inflated, in being thinner 

 and more vesicular. The fold in the columella is usually well defined, but is larger 

 in some specimens than in others. It is allied to fragilis, Mighels, but differs in color 

 and in having a well defined fold, that species being " without columella fold." It is 

 also allied to Warreniana, herein described, but is not so globose and has a larger and 

 better defined fold. The aperture is about eleven-fifteenths of the length of the shell. 



