ANGITREMA. 



17 



if not vertical, iucline to the left, while those on Tuomeyi are irreg- 

 ular and incline very much to the right, the number ou the specimen 

 befoi'e me being five on half of the last whorl. It is closely allied to 

 Lithasia Florentiana, nobis, but differs much in the tubercles, in being 

 a heavier shell, less acuminate, in being thicker on the columella and 

 open in the channel. The Tuomeyi is much thicker above and below 

 on the columella, has the obscure band within, and the outer lip is 

 thickened and white inside the edge. 



This species and im^^erialis were accompanied by many specimens 

 of semigranulosa and Florentiana. The exact habitat was not men- 

 tioned. I have peculiar pleasure in dedicating this species to my 

 friend, the late Professor Tuomey, whose able report on the geology 

 of South Carolina and Alabama has justly gained him so much repu- 

 tation. — Lea, 



B. Body-whorl encircled above the aperture by two roivs of tubercles, of 

 which the inferior one is most prominent. 



5. A. Jayana, Lea. 



Melania Jayana, Lea, Philos. Proc, ii, p. 83. Philos. Trans., ix, p. 20. Obs., iv, 

 p. 20. Wheatley, Cat. Shells U. S., p. 25. Jay, Cat. Shells, 4th edit., p. 274, 

 BiXNEY, Check List, No. 154. 



lo Jayana, Lea, Brot, List, p. 29. Mai. Blatt., v, 115, 1860. 



Mdania rolulina, Anthoxy, Bost. Proc, iii, p. 263, Dec. 1850. Bixney, Check List, 

 No. 230. 



lo robuUna, Anthony, Reeve, Monog. lo, sp. 15. Cuexu, Man. Couchyl., i, f. 1970, 



Description.— ^\\q\\ tuberculate, subfusiforra, thick, pale horn-color; 

 spire exserted ; sutures linear 



Fig. 51. 



Fig. 50. 



and curved , whorls rather 

 convex; impressed in the 

 middle, surrounded by a 

 double series of tubercles; 

 columella incurved, thickened 

 above ; aperture trapezoidal, 

 whitish within. 



Habitat. — Caney Fork, De- 

 Kalb county, Tennessee. 



Diameter, -78; length, 1-20 inches. 



Observations.— Dv. Jay had two specimens of this species, and I 

 owe to his kindness the possession of one of them. It very closely 



L. F. W, S. IV. 2 



