Notes on Lingual Dentition of Mollusca. 



By W. Gr. BlNNEY AND THOMAS BLAN». 



No. I. 



Eeprinted from the Annals of the Lyceum of Natural History, Vol. IX., February, 1870. 



The illustrations given in this paper are from figures obtained 

 by the use of photographic negatives in a magic lantern, and 

 reduced bj photography. The negatives were taken by our 

 friend Mr. Sam. Powel, of Newport, E. I., to whom we are in- 

 debted for valuable aid in the study of lingual dentition. 



8uccinea ^iitCalliana, Lea. 



The specimen from which was taken the lingual membrane 

 liere figured was labelled by Mr. Lea. It was received from the 

 Smithsonian Institution. No locality is given for the specimen, 



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