Genus Cyprcsa. 235 



mainly acquired in 1825 at the sale of the celebrated 

 Cabinet of Lord Tankerville, has been investigated. I have 

 also often visited the Liverpool Museum, where the Rev. 

 H. H. Higgins, Mr. T. J. Moore, and especially Mr. F. P. 

 Marrat, have laid me under much obligation. The well 

 selected collection of cowries, belonging to Mr. J. Michael 

 Williams of the same city, have also been inspected with 

 much pleasure and profit ; and last, but not least, Mr. G. B. 

 Sowerby, of Fulham Road, London, has rendered me much 

 assistance, and to him and all the above-named I would 

 return most cordial thanks. 



As opportunity offered, I have likewise inspected the 

 Natural History Museums in Paris, Brussels, Geneva, and 

 some other Continental cities and towns ; and, in the United 

 States, the Academies of Natural Science at New York, 

 Boston, the Smithsonian Institution, Washington, and 

 portion of the Philadelphian Academy Collections, on 

 which Mr. Tryon bases his volumes ; also that of Montreal, 

 Canada. 



The fine series of Australian Mollusca, collected and 

 exhibited by Dr. J. C. Cox, of Sydney, at the Indian and 

 Colonial Exhibition in London, during 1886, was also twice 

 attentively examined. 



The works of Messrs. Sowerby, Reeve, and Adams, 

 and the monograph of Cyprcea in Tryon's Manual of Con- 

 chology, by Mr. S. Raymond Roberts, have all proved of 

 the greatest service, and I also beg to tender my acknow- 

 ledgements for the aid afforded thereby. 



