113 



Figure 12, 13. Nucula Eightsii, Couthouy. 



Annals Lyceuin Natural History. 



Habitat, New South Shetland. 



Remarks. — A description of this new species of Nucula was read before the 

 Lyceuin during the last year, by Joseph P. Couthouy, Corresponding Member. 

 Mr. C. presumes this to be a new species, from its remote locality, and the fact 

 that it is neither alluded to by M. Des Hayes in his new edition of Lamarck, nor 

 figured by Sowerby in his " Illustrations of the Genus Nucula," which embody 

 all the new ones carried to England by Mr. Cumings, from the South Atlantic 

 and Pacitic Oceans. A few specimens only of this shell were picked up on the 

 shores of New South Shetland, by Dr. James G. Eights, of Albany, N. Y. 



Figure 14, 1.5. Venerupis Peruviana, Nobis. 

 Habitat, Coasts of Peru. 



Figure 16. Fissurell.v nigrita? Sowerby. 



Zoological Proceedings, p. 127,1834. 



Habitat, Tiger Bay, West Coast of Africa. 



Remarks. — Mons. Largilliert, of Rouen, France, sent me this shell, with the 

 following description of it made by a friend of his, who found a kw specimens 

 only at the above locality. " It was found in an animal having a black skin, and 

 a reddish-colored belly — of a very tough substance, and nearly as thick as the 

 hand. The shell is smooth on the back, and is entirely enveloped by the skin, 

 with the exception of a small hole. It is found in the crevices of rocks washed 



by the sea." 



It is a pure white within ; and the margin, which is entire, has the appearance 

 of having had a narrow strip of the external coating ground off, showing a white 

 margin around the base of the shell, externally. 



Figure 17, 18. Trichotropis costellatus, Couthouy. 



Boston Journal Natural History, vol. 2, pi. 3, f. 2. 



Habitat, deep waters of Massachusett's Bay. 



29 



