ALSO BY THE SAME AUTHOR. 



Elements of Conchology ; 



An Introduction to the Natural History of Shells, and of the Animals which form them. 

 With 62 Plates of Shells and of the Living Animals by G. B. Soweebt and E. Miller. 



In 2 vols., price £2, 6s. coloured. 



Conchologia Systematica. 



A Complete System of Conchology ; in which the Lepades and Conchiferous Mollusea are 

 described and classified according to their Natural Organization and Habits. With 300 

 Plates of Shells by J. D, C. and G. B. Sowebby. 



Two vols. 4to, price £10 coloured. 



Conchologia Iconica ; 



Or, Figures and Descriptions of the Shells of the Mollusea, with Remarks on their Aflinities 

 Synonymy, and Geographical Distribution. The Drawings by G. B. Sowebbt, F.L.S. 

 Published Monthly in Parts, demy 4to, each containing eight plates, price 10». coloured. 



Part CCXXI. just published. 



