of Pecten and Lima, will shortly be added those of Spondylus and Plicatula ; 

 the Family of Volutidge ^dll be comjiletcd in an early Part, by the Genera 

 Cymba and Melo. Part seven will contain, with other genera, all the remain 

 ing Bracliiopoda. 



GEOLOGISTS, who have long needed a Work hke the present to enable 

 them to compare their fossil specimens with the recent species of Shells, 

 will find iincoloured copies well adapted to that purpose. 



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The Linnean Society of London. 



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The Rev. Dr. J. Pye Smith, F.R.S. &c. 



Rev. L. Vernon Harcourt. 



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