21S Catalogue of the 



Station. — Under side of stones — abundant. 



TIahitat. — West Indies ; Philippi ; also Pfeifier. St. Thomas 

 and St. John; Mus. Amh. Upper part of the hill opposite 

 Baker's, St. Thomas; T. B. ! 



G. (10.) Cylindrella ] Sp. indet. 



This species belongs to the genus Macroceramus of Guilding. 

 In shape and size it is not unlike JBulimus Kieneri Pfr. (Mon. 

 Hel. \W. II. No. 202. Ev. Conch. Icon. sp. 463,) from Honduras, 

 but the sutures are not crenulated, and the last whorl has a 

 single sharp keel at the base, somewhat similar to B. unicarina- 

 tns (Pupa) Lam. (Ed. Desh. VIII. p. 173. No. 10. Pfr. 1. c. No. 205. 

 Rv^ 1. c. sp. 468.) from Cuba. A Porto Rico species is ver}^ like 

 the St. Thomas shell, but is larger, and has the keel less deve- 

 loped. Cylindrella Hydeana Ad. Contrib. p. 23 {B. Gossei Pfr. 

 1. c. No. 206. Rv. 1. c. sp. 462), from Jamaica, is of the same gene- 

 ral character, but is much smaller, and has no keel. B. turri- 

 cida Pfr. (1. c. No. 207. Rv. 1. c. sp. 497,) from Cuba, and Cylin- 

 drella pontifica Gould (in Bin. Terr. JMoll. of U. S. II. p. 306,) 

 from East Florida, and also from Cuba, belong to the same 

 group. 



Station. — Under stones, and on rocks. 



Habitat. — Summit of the Hill opposite Baker's, St. Thomas ; 

 T. B. ! 



V. (7.) Achatina octona Chemn. IX. P. 2. p. lOO. t. 13G. f. 



1264. - - - . 1786. 

 JBidimus oclonus Lam. ed. Desh.VIII. p. 233. No. 21. 1838. 

 Achatina octona Pfr. Monog-. Ilel. Viv. II. p. 266. 



No. 65. - - - - 1848. 

 Rv. Couch. Icon. sp. 84. - 1849. 



Station. — Under stones, and among dead leaves : very com- 

 mon. 



Habitat. — "W. Indies ; Chemnitz ; W. Indies, S. America, 

 Pacific Is. ; Reeve. St. Thomas ; T. B. ! 



