60 PROCEEDINGS OF THE MALACOLOGICAL SOCIETY. 



the same view ; but, as Dr. Murray is convinced that no sucli error 

 in the locality could possibly exist, I feel bound to withdraw that 

 opinion. The following species are common to the North Atlantic 

 and Station 164 : — 



Rissoa deliciosa, Jeffreys. 

 Bentalium ensicidus, Jeffreys. 



,, panormitaniim, Chenu. 



Ctispidaria teres, Jeffreys. 

 Poromya nearoides, Seguenza. 



Of these identifications I have no doubt whatever, and those of the 

 subjoined forms, also North Atlantic species, are probably correct, but 

 not absolutely certain, as the material at hand is insuiScient. 



Cadiilus propinqims, Sars., or C. curtiis, Jeff. 



Cylichna ovata, Jeff. 



DentaUum capillosum, Jeff. 



Scaphander gracilis, Watson. 



Scissurella crispata, Fleming. 



Seguenzia carinata, Jeff. 



In my report above mentioned (pp. 4 and 5) I have given a number 

 of instances of equally remarkable distribution. In the cases there 

 instanced only indivichial species are noticed. On the contrary, in 

 the series under consideration there are at least five species common 

 to the far-distant localities referred to, and it was this superior number 

 which to a great extent made Mr. Watson and myself sceptical. 



In conclusion I will call attention to a similar and very remarkable 

 case of distribution which has been recorded by Mr. Brazier.^ The 

 shell in question belongs to the well-known Mediterranean species, 

 Euthria cornea of Linnaeus, and was obtained alive by a relative 

 of Mr. Brazier, Mr. R. C. Rossiter, at Wagap, east coast of New 

 Caledonia. 



Geographical distribution is such a hopeless enigma that I dare not 

 venture to hazard any theory with regard to the present instances. 



EXPLANATION OF PLATE VIL FIGS. 1-7. 



Figs. 1, 2. — Scissurella Lytteltonensis. 

 ,, 3. — Photinula Suteri. 



,, 4, 5. — Acmaea Helmsi. 



,, 6, 7. — Lepeta? alta. 



1 Proc. Linn. Soc. N.S.AY. 1889, vol. iv. p. 117. 



