1896.] NATURAL SCIENCES OF PHILADELPHIA. 325 



such as that figured by Sowerby occur. They are either maculated 

 or unicolored. On Anagada a short, egg-shaped race is found. On 

 Necker Island the shells are pure white, but white ones also occur 

 at Ponce and Puna, Porto Rico. 



46a. Cerioncrassilabre Sallei P. & V.* Pl. XI, fig. 6. 



Small and cylindrical ; creamy, maculated on the terminal cone. 

 Alt. 19, diam. 7-5 mill. San Domingo (Salle). 



47. Cerion Antonii KUster. Conchyl. Cab., Pupa, p. 92, pl. 10, f. 7, 8. 

 Berbice (British Guiana). 



This species is unknown to us. 



Group of C. cydostomum. 



48. Cerion cydostomum Kuster.* Concb. Cab., II, p. 6, t. 1, f. 5, 6. 

 ? Ftipa Kusteri Pfr., Proc. Zool. Soc, 1852, p. 69. 



Cuba. 



49. Cerion pinerium Dall.* Proc. U. S. Nat. Mus. 1896, p. 6. 

 Isle of Pines. 



50. Cerion tenuilabre Gundl.* Malak. Bl., XVIII, 1870, p. 91. 

 Barigua en Baracoa, Cuba. 



50a. Cerion tenuilabre pygmaeum Pils. & Van.* Pl. XI, fig. 9. 

 Gibara, Cuba. 



51. Cerion microstomum Pfr.* Malak. Bl., 1854, p. 207, t. 3, f. 15, 16. 

 Punta Jiacos, Cayo Paredon Grande, Cuba. 



52. Cerion Cumingianum Pfr.* Proc. Zool. Soc, 1852, p. 68. 



Hab. ? 



53. Cerion Gundlacbi Pfr.« Zeitschr. f. Malak., 1852, p. 175, t. 1, f. 39-42. 

 Punta de San Juan, Cuba. 



Group of C. Martensi. 



54. Cerion Milleri Pfr.* Malak. Bl. XIV, 1867, p. 129 ; Novit. Conch., t. 84, f. 6-13. 

 Duck Key, Exuma group. 



55. Cerion Gruneri Pfr.* Zeitschr. f. Malak., 1847, p. 15. 

 Sagua de la Grande, Cuba. 



56. Cerion venustum Poey. Memorias, II, p. 30. 



Cuba. This species is unknown to us, and perhaps identical with 



C. Gruneri. 



67. Cerion Martensi Weinl.* Malak. Bl., IX, 1862, p. 164; Novit. Conch., t. 84, f. 

 3-5. 



Crooked Island, Bahamas. 



