142 MR JAMES COSMO MELVILL AND MR ROBERT STANDEN ON THE 



Hab. — Shore, Port William, Falkland Islands, January 31, 1904. 

 Indistinguishable from the European species. 



Section Siphonarioidea. 

 Family Siphonariidse. 



Siphonaria redimiculum, Reeve. 



Siphonaria redimiculum , Reeve, Conch. Icon., ix., pi. v., fig. 21 (1856). 



„ ,, „ E. A. Hmith, "Moll, of Kerguelen," in Trans. Royal Soc. 



Lond., 1879, p. 16. 



Hab. — Hearnden Water, Falkland Islands, shore, January 7, 1903; also trawl, 

 Port William, Falkland Islands, January 31, 1903 ; Gough Island, on the shore, 

 April 22, 1904. 



Order Pulmonata. 



Sub-order basommatophora. 



Family Auriculidse. 



Marinula nigra, Philippi. 



Hab. — Gough Island, on the shore, April 22, 1904. 



Class SCAPHOPODA. 



Dentalium eujpatrides* sp. n. (Plate, fig. 12). 



D. testa magna, nitidissima, tend, alba, paullum arcuata, polita, lineis incrementalibus concentrice 

 prsedita, versus apicem solum longitudinaliter obscure 1 multi-striata. Apice minimo, apertura rotunda. 

 Long. 63, diametr. antic. 5, diametr. post. 1 mm. 



A fine, glistening white species, of thin and fragile substance. The concentric incre- 

 mental lines of growth are frequent, and occasionally shown more plainly by staining 

 of straw-colour. Towards the apex the surface is longitudinally closely striate, these 

 striae extending for almost one-third of the total length. Some examples are straighter 

 than others ; the majority are slightly gracefully arched. The aperture is circular, 

 varying in diameter from 5 millimetres in the type, to 7 in one very broad specimen. 

 From the figure and description t by Dr W. H. Dall, his D. callipeplum seems akin 

 to our species. This was obtained in several stations in the West Indies during the 

 Blake Expedition, at between 100 and 200 fathoms. 



* €U7roTp('87)s, patrician. 



t Bull. Mus. Cornp. Zool. Harvard, vol. xviii., p. 419, pi. xxvii., fig. 126 (1889). 



