GONIOBASIS. 



199 



78. Gr. Thorntonii, Lea. 



Goniobasis Thorntonii. Lea, Troc. Acad. Nat. Sci., p. 2G8, 18G2. Jour. Acad. Nat. 

 Sci., V, pt. 3, y. 320, t. 38, f. 168, March, 1803. Obs., ix, p. 142. 



Descriptioii.— Shell roughly folded, conical, rather thin, horn-color, 



without bands; spire conical; sutures irregularly and very much 



impressed; whorls slightly convex, clothed with distant bent folds; 



aperture rather large, rhomboidal, white within; outer lip 



Fig 391. 

 acute, sinuous; columella somewhat bent in and twisted. 



Operculum ovate, thin, brown, with the polar point one- 

 third from the base on the left of the centre. 



Habitat. — Tuscumbia; L. B. Thornton, Esq.: Florence, 

 Alabama; Rev. G. White. 



Diameter, -38; length, -87 of an inch. 



Observations. — Some dozen specimens, most of them imperfect are 

 before me. The number of whorls could not be ascertained — prob- 

 ably eight. The folds are large, distant and curving to the right; 

 about the middle of a whorl there is a line which decussates the fold, 

 making a node. It belongs to the group of which Melania (Gonio- 

 basis) custulata (nobis), may be cousidered the type, and it closely 

 resembles Lindsleyi, herein described, but diflers in not being cylin- 

 drical, in having larger and more distinct ribs and and a larger 

 aperture. The aperture is rather more than one-third the length of 

 the shell. I name this after L. B. Thornton, Esq., Attorney at Law, 

 Tuscumbia, who very kindly has sent to me many flue specimens from 

 his vicinity. — Lea. 



79. G. cancellata, Say. 



Melania cancellata, Say, New Harmony Disseminator, p. 2G0, Aug., 1829. SAY'S 

 Reprint, p. IG. BixxEV'S edit., p. 141. Binnky, Check List, No. 40. DElfAY, 

 Moll., N. Y., p. 93. Wheatlev, Cat. Shells, U. S., p. 24. 



Elimia cancellata, Say, Adams, Genera, i, No. 84 



Description. — Shell rather slender, attenuated; volutions convex, 

 with about twenty-six, reclivate, longitudinal, elevated lines, crossed 

 by about eighteen revolving ones, the eight or nine towards the 

 base crowded. 



Length, more than four-lifths of an iuch. 



Habitat. — Florida. 



Observations. — For this shell I am indebted to Captain Le Conte, 

 who informed me that he obtained it in St. John's Kiver. It diilers 



