PR0SERPIN-ID.13. 147 



ostraca; spire convexly conoidal, mucronate; whorls eight, 

 scarcely convex, the last not descending, furnished at its middle 

 with a sharp compressed keel, convex beneath, smooth and more 

 or less covered with a yellow polished callus ; aperture very 

 oblique, nearly triangular, modified by six lamellae, two on the 

 body of the penultimate whorl, one rather twisted on the colu- 

 mella, three on the basal part, of which the middle one is 

 stronger : peristome yellow, slightly thickened, obtuse. Greatest 

 breadth 23, least breadth 21, height nearly 12 mill. 



Proserpina Salleana, Cuming, 3Ius. 



Ceres Salleana, Gray in Proc. Zool. Soc. 1856, Apr. 



Pfr. Mon. Auric, p. 169 ; Nov. Conch, i. n. 158. 1. 125. f. 4-6. 

 Hub. State of Vera Cruz, Mexico (Salle). 



2. PROSERPINA, Gray. 



Shell imperforate, heliciniform, rather globular or depressed, 

 smooth, covered with a polished callous coat on the upper and 

 under surface. Columella one-toothed ; body of the penultimate 

 whorl furnished with one or more spiral plaits. Aperture lunate, 

 modified often by palatal plaits. Peristome simple, straight. 



Proserpina, Gray, 3ISS. 



Sowerby, Conch. Man. p. 237. 



Gray, Syn. Brit. Mas. 1840, p. 153 ; ed. 1842, p. 90. 



Jonas in Zeitschr. f. Malak, 1846, p. 10. 



Gray in Proc. Zool. Soc. 1847, p. 182. 



Pfr. Mon. Helic. i. p. xviii,iii. p. 289; Men. Auric, p. 169. 



C. B. Adams, Contrib. to Conch, no. 3. p. 41. 



Albers, Helic. p. 134. 



Herrmannsen, Incl. Gen. Malak. ii. p. 335. 



Jay, Catal, 1850, p. 117. 



Philippi, Handb. d. Conch, p. 147. 



Bland in Ann. Lye. New York, vi. p. 76. 



Poey, Memor. Hist. Nat. Cuba, i. p. 392. 



H. and A. Adams, Gen. rec. Moll. ii. p. 309. 



G uy in Proc. Zool. Soc. 1856, Apr. 

 Odontostoma, UOrb. Moll. Cuba, i. p. 237. 



Pfr. Mon. Helic. i. p. 11. 

 Ib'licinae et Helicis, sp., Auctt. 



This genus was first proposed by Dr. Gray as belonging to 

 Hi/icidee, and adopted by .Jonas *ind others. Nearly at th« 

 same time it was described by D'Orbigny under the nam. oi 

 Odontostoma (already preoccupied in Zoology), and ascribed 

 with doubt to the family of CychstomidcB. 



ii 2 



