186 



LAND AND FRESH-WATER SHELLS OF N. A. [PAET IV. 



59. G. Deshayesiana, Lea. 



Melania plicatuJa, LEA, Proc. Philos. Soc, ii, p. 14, Feb., 1S41. Philos. Trans., 

 viii, p. 182, t. 6, f. 41. Obs., iii, p. 20. Tkocst, Cat. Shells. Tenn. Jay, Cat., 

 4th Edit., p. 274. Catlow, Conch. Nomenc, p. 1S8. BitoT, List, p. 34. 



Melasma pUcatula, Lea, Chenu, Man. de Conchyl., i, f. 1998. Adams, Genera, i, 

 p. 300. 



Melania Deshayesiana, Lea, Philos. Proc, ii, p. 242, Dec, 1842. Philos. Trans., 

 ix, p. 24. DeKay, Moll. N. Y., p. 98. AVheatley, Cat. Shells, U. S., p. 2.>, 

 TuooST, Cat. Shells, Tennessee. Jay', Cat. Shells, 4th Edit., p. 273. Binney, 

 Check List, No. 88. Bkot. List, p. 34. 



Melania Deshayesii, Lea, Reeve, Mouog. Melania, sp. 330. 



Melasma Deshayesiana, Lea, Adams, Genera, i, p. 300. 



Fig. 302. Fig. 3G3. Fig. 3G4. 



Description. — Shell folderl, conical, thin, dark lioru-color; spire 

 rather elevated; sutures impressed; whorls 

 eight, rather convex, striate above ; aperture 

 rather small, elliptical, at the base somewhat 

 angular, within whitish. 

 Habitat. — Tennessee. 

 Diameter, -35 ; length, -85 of an inch. 

 Observations. — Dr. Troost and Mr. Edgar 

 both procured this species from Tennessee, but their labels do not 

 state the district. The ribs are numerous and close, and most indi- 

 viduals have two striae above, which, crossing the ribs, produce a 

 granulation. The mouth is about one-third the length of the shell. — 

 Lea. 



This species was described as j^^icatnla, but that name hav- 

 ing been preoccupied by Deshayes, Mr. Lea changed it to 

 Deshayesiana. It is very closely allied to crehricostata and 

 tenehrosa. 



Fig. 305. 



60. G. Abbevillensis, Lea. 



Goniobasis Abbevillensis, LEA, Proc. Acad. Nat. Sci., p. 2C8, 18u2. Journ. Acad. 

 Nat. Sci., V, pt. 3, p. 323, t. 38, f. 174, Mar., 18G3. Obs., ix, p. 145. 



Description. — Shell folded, conical, rather thick, chestnut- 

 color, shining; without bauds; spire conical, sutures linear; 

 whorls seven, somewhat convex, nearly flat, carinate and stri- 

 ate at the apex ; aperture slightly large, ovately rhomboidal 

 somewhat ochraceous witliin; outer lip acute, scarcely sin- 

 uous ; columella thickened and twisted. 



Habitat. — Abbeville District, South Carolina; J. P. Barratt, M.D. 



Diameter, '30 ; length, -03 of an inch. 



Observations. — This is a pretty species with very regular spire and 



