252 PEOCEEDINGS OF THE MALACOIOGICAL SOCIETY. 



in 1853 (op. cit., p. 40). Poll's name was JDaphnmoderma. This 

 group had already been called Acar by Gray in 1847. 



Pero7moderma was proposed by Morch in 1853 for Tellma polita, Poll, 

 and other not congruous species. If adopted, it is probable this should 

 supersede the later EurytelUna, Fischer, 1887. 



Cerastoderma, Morch, 1853, based on Cardium edule and allied 

 species, was adopted by me in my Synopsis of the Cardiidse, 1900. 



Poll, considering the appliances available at his period, was a remark- 

 able anatomist, and relied much more on his detailed engravings to 

 indicate his discoveries than on his text. As the former preceptor of 

 the reigning monarch, he occupied a position in his community 

 analogous to that which Steenstrup held for many years in Copenhagen. 

 Funds for his profusely detailed anatomical copper-plates were always 

 at his disposal, and a careful study of them for the anatomy of 

 Mediterranean molluscs will often reveal facts not recorded in the 

 manuals of the present day. The third part of his work was 

 posthumously issued in 1826-7 by Delia Chiaje. 



The only disciple in his nomenclatural system I have noted is 

 Dumeril, in 1806, who modified it by adding arius to the generic name 

 of the shell to denote the animal ; Pleurotomarius being intended for 

 the animal of Pleurotoma, etc. The superiority of the Linngean system, 

 however, gave these methods no chance of survival. 



