11. 



A Very Fine Fossil lower jaw of an Elephant, dredged from off 

 the Dogger Bank, having all its teeth, in most perfect condition. 



Mr. G. B. SowERBY begs to announce, that he is actively 

 engaged in completing the second and third parts of the Species 

 CoNCHYLiORUM, of which all the plates are engraved, some are 

 printed off and coloured ; and all the manuscript is ready, a part 

 of that also being printed off; and that both will be completed as 

 quickly as the great outlay will permit. He is also preparing the 

 compleiion of his Genera of Recent and Fossil Shells, which 

 will not be delayed longer than is absolutely necessarj'. At the 

 same time he is collecting materials for an Illustrated Natural 

 History of British Testaceous Mollusca, to be published as 

 soon as possible afier his work on the Genera is c<impleted. A 

 Prospectus will shortly be laid before the Public, and in the 

 interval, he respectfully invites the communication of unpub- 

 lished information relating to the subject, and of new or rare 

 species. It is intended to give descriptions and figures of every 

 species of Shell, and of every Genus of Testaceous Mollusc. 



THE CHATHAM MUSEUM. 

 Mr. G. B. SowERBY has in his possession certain articles, prin- 

 cipally Crustacea, which were left with him for the Chatham 

 Museum, by J. V. Thompson, Esq., and which he will be happy 

 to deliver to the proper authorities. No application will be 

 replied to, if atten'led with any expense to G. B. S. 



George Odell, Printer, 18, Princes-street, Oxford-street. 



