CONTENTS OF VOL I. 



BY C. B. ADAMS. 



Page 

 Descriptions of forty-four new species and varieties of operculated land 



shells from Jamaica. September 1849. 1-14 



Catalogue of operculated land shells which inhabit Jamaica. - - - 15-16 

 Descriptions of supposed new species and varieties of Helicidiie from 



Jamaica. October 1849. 17-38 



Catalogue of species and varieties of Helicida; which inhabit Jamaica. - 39-41 

 New Auriculidffi which inhabit Jamaica. Oct. 1849. - - - - 41-42 

 Catalogue of Auriculidas which inhabit Jamaica. Oct. 1849. - - - 4^2 



Descriptions of supposed new species of freshwater shells which inhabit 



Jamaica. Oct. 1849. 42-15 



Catalogue of freshwater shells which inhabit Jamaica. Oct. 1849. - - 46 



Remarks on the distribution of the terrestrial and freshwater Mollusca 



which inhabit Jamaica. Oct. 1849. 45-50 



Remarks on the weight of the shells of certain species of Colimacea. 



Nov. 1849. 51-53 



Description of a supposed new species of Columbella. Jan. 1850. - - 53-54 

 Notes on the synonymy of certain marine shells. Jan. 1850. - - - 54-55 

 Descriptions of supposed new species of marine shells which inhabit 



Jamaica. Jan. 1860. 56-75 



Descriptions of supposed new species and varieties of terrestrial shells 



which inhabit Jamaica. Feb. 1850. 76-84 



Remarks on the origin of the terrestrial Molluscs of Jamaica. March 



1850. 85-87 



Description of a new genus of HelicidiE from Jamaica. March 1850. - 87-88 

 Description of Jamaieia, a new subgenus of Cyelostoma. March 1850. - 88 



Notes on certain species of the land shells of J.imaica. March 1850. - 88-90 

 Descriptions of supposed new species of laud shells which inhabit Jamaica. 



March 1850. 90-98 



Synonymy of Helix picturata Ad. 98-100 



Description of supposed new species of land shells which inhabit Jamaica. 



April 1850. 101-108 



Descriptions of supposed new species of marine shells which inhabit 



Jamaica. April 1850. 109-123 



Descriptions of new species of Partula and Achatinella. Oct. 21st, 1850. 125-128 

 Descriptions of new species and varieties of shells which inhabit Jamaica. 



Oct. 21st, 1850. 129-140 



Analysis of the group of species of Cyelostoma, which is represented by 



C. Jamaicense Chem. 140-148 



