320 PROCEEDINGS OF THE ACADEMY OF [1896. 



12. Cerion iostomum Pfr * Malak. B)., 1854, p. 204. 

 Southern Cuba. 



12a. Cerion iostomum Arangoi P. & V.* PI. XI, fig. 12. 

 Cienfu egos, Cuba. 



13. Cerion Sagraianum Pfr.* Zeitschr. f. Malak., 1847, p. 15. 



.S". marmorata Maynard, Contrib. to Sci., Ill, p. 12 (not of Pfr.!). 

 .S" marmorata polila Maynard, Contrib. to Sci., Ill, p. 14. 

 S. obscura Maynard,* Contrib. to Sci., Ill, p. 21. 



Cuba, Cayo Galindo, Cayo Piedra del Norte, Cardenas. 



There are two forms of C. Sagraiamim, one smooth (typical), the 

 other with fine riblets ; but the distinction does not seem to be of 

 subspecific value, being too variable in the series before us. The 

 cone of the spire is always minutely sculptured. The intergradation 

 of S: obscura Mayn. is established by specimens before us. 



14. Cerion maritimum Pfr.* Archiv f. Naturg., 1839, I, p. 353 ; Conchy]. Cab., t. 

 9, f. 10, 11. 



14a. Cerion maritimum sublaevigatum P. & V.* Proc. A. N. S., May 4, 1895, p. 

 209 ; Conchy]. Cab., t. 9, f. 12, 13. 



Matanzas, Cuba. 



15. Cerion incanum Binn.* Terr. Moll., II, p. 318 (1851). 

 P. detrita Shutt., mss. 



Florida Keys ; Eastern Cuba. 



16. Cerion hyperlissum P. & V.« PI. XI, fig. 10. 

 Cuba. 



Group of C. regina. 



17. Cerion Weinlandi 'Kurr' Martens.* Malak. Bl., VI, 1859, p. 207, Novit. 

 Conch., t. 84, f. 1, 2. 



Crooked Id., Bahamas. 



18. Cerion nudum Maynard.* Contr. to Sci., I, p. 29. 



Long Island. Near to C. Weinlandi, but smaller. 



19. Cerion incanoides P. & V.* Proc. A. N. S., May 4, 1895, p. 209. PI. XI, fig. 15. 

 Turks Island. 



20. Cerion regina P. &, V.* Proc. A. N. S., 1896, May 4, 208. PI. XI, figs. 23, 24. 

 Turks Island. 



20a. Cerion regina comes P. & Y* Proc. A. N. S., 1895, May 4, 208. 

 Turks Island. 



