NORTH BRITISH TESTACEA. 395 



NAUTILUS. 



Animal not distinctly known. Shell univalve, di- 

 vided into several departments, communicating 

 with each other by an aperture or siphuncu- 

 lus. 



1. Beccarii. M. 



2. Beccarii perversus, M. 

 S. linearis. M. 



Fortobello Sands, not un- 

 common. 



From same place. 



A new species from Dun- 

 bar, rare. 



CYPR/EA. 



Animal a Limax. Shell univalve, involute, subo- 

 vate, smooth, obtuse at each end. Aperture ef- 

 fuse at each end, linear, extending the whole 

 length of the shell, and toothed on each side. 



1. Europaea. M. Rather plentiful at Dunbar, 



and to be met with spa- 

 ringly on most parts of 

 the coast. With all the 

 varieties, we are happy to 

 find, Mr Montagu is of 

 the same inion in re- 

 spect to this shell and the 

 fry as ourselvts. By this 

 meansCypraea arctica, Cy- 

 praea bullata, Bulla dia- 

 phana, and, in fact, Volu- 

 ta jonensis of Pennant, 



