Since this Catalogue was first published, considerable additions have been 

 made to the Collection. This circumstance, together with fho i.nporfeclions 

 of the first edition, have induced me to publish the present. 



In this I have added the authorities for the names of the species, and in a 

 few instances their sijnonymcs. In these additions it is probable that there 

 are errors, which I shall take it as a favor to have pointed out. 



For the benefit of young Collectors, I have annexed the classification of 

 Lamarck, including some of the fossil genera. I have also inserted Plates 

 and Descriptions of a few exotic shells in my possession, most of which are, 

 I believe, hitherto undescribed ; and concerning which I shall be happy to re- 

 ceive information. 



It will give me pleasure to exchange duplicate specimens, and I will receive 

 live and perfect shells, whether they are enumerated in this Catalogue or not, 

 and, as far as f am able, supply whatever may be desired in return. 



New. York. J^ovember 1, 183C, ^' ^' ''^^' ^^ Bond-strceti 



