NEW MELANIDiE OF THE UNITED STATES. 



affinities is Melania {Goniobasis) basalts (nobis), it having somewhat like irregular 

 elevations, but it is a smaller and thinner species with a greenish epidermis and thick 

 close bands. None of the four specimens before me have more than three perfect 

 whorls remaining, the upper ones (perhaps six originally) are worn off. The length 

 of the aperture is about one-half that of the shell. 



Goniobasis Lyonii. PI. 37, fig. 156. 



Testa plicata, superne striata et ad apicem carinata, luteola, subtenui, valde exserta ; spira attenuate, mu- 

 cronata ; suturis irregulariter impressis ; anfraetibus novcnis, convexiusculis ; apertura parviuscula, 

 subrhomboidea, intus albida ; labro acuto, sinuoso ; columella iueurva, incrassata, parum contorta. 



Shell folded, striate above, carinate at the apex, yellowish, very thin, very much 

 drawn out; spire attenuate, sharp-pointed; sutures irregularly impressed; whorls 

 nine, slightly convex ; aperture rather small, subrhomboidal, whitish within ; outer 

 lip acute, sinuous; columella bent in, thickened and slightly twisted. 

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



Hab. — Grayson County, Kentucky, S. S. Lyon. 



My cabinet and cabinet of Mr. Lyon. 



Diam - ,30 ' Length -92 inch. 



Remarks.— A single specimen of this species was among the Melaniche collected by 

 Mr. Lyon in the geological survey of Kentucky. It was accompanied by Melania 

 (Goniobasis) Deshaysiana (nobis), to which it is closely allied in some of its characters. 

 It differs in having two or three more whorls, in being more cancellate above, by the 

 strife decussating the longitudinal ribs, and particularly in the lower part of the colu- 

 mella being nearly straight, while that part in Deshaysiana is oblique to the right. 

 The ribs are pretty close and slightly curved, the inner margin of the outer lip is 

 slightly thickened. The aperture is rather less than one-third the length of the 

 shell. I dedicate this with great pleasure to Mr. Lyon, Civil Engineer and State 

 Geologist. 



Goniobasis Ptbasii. PI. 37, fig. 157. 



Testa plicata, valde exserta, luteola, tenui, vittata ; spira attenuata, umcronata ; suturis impressis; an- 

 fraetibus septenis, planulatis ; apertura ovato-rhomboidea, intus albida et vittata; labro acuto, sinu- 

 oso ; columella parum iueurva, parum incrassata et contorta. 



Shell folded, very much drawn out, yellowish, thin, banded ; spire attenuate, 

 sharp-pointed; sutures impressed ; whorls seven, flattened ; aperture ovately rhombo- 

 idal, whitish and banded within ; outer lip acute, sinuous ; columella slightly bent in, 

 somewhat thickened and twisted. 



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

 Hab. — Tuscumbia, Alabama, B. Pybas. 



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