374 Dr. J. Gwjn Jeffreys on Deep-sea 



XLV. — Additional List of the Deep-sea Mollusca of the Bay 

 of Biscay. By J. Gwyn Jeffreys, LL.D., F.R.S. 



After giving, in the last number of the l Annals,' a list of 

 the species of Mollusca procured by the French Expedition, 

 I said, "When M. de Folin has completed his examination 

 of the sifted material, other species will in all probability have 

 to be added to the list." This examination has now been 

 completed by M. de Folia, with his usual industry and care ; 

 and I subjoin a supplemental list, distinguishing in the same 

 way as before the new, northern, southern, and ' Porcupine ' 

 species. The present and former list give a total of 199 

 species, viz. 17 new, 9 northern, 2 southern, 169 ' Porcupine,' 

 and 2 ( Terebratula subquadrata and Odostomia nitidissima) 

 which are Atlantic and Mediterranean but not ' Porcupine.' 

 It will be seen that several of the species in the present list 

 are supposed to have been drifted from shallower water. This 

 may have been owing to the proximity of the explored area to 

 the shore, and to the consequent action of rivers and tidal 

 currents. 



Brachiopoda. 



1. Terebratula subquadrata, Jeffreys. Young. Proc. Zool. 



Soc. 1878, p. 402, pi. xxii. fig. 4. 



CONCHIFERA. 



2. Pecten similis, Laskey. A single valve ; probably drifted. 



3. Mytilus edulis, Linne. A valve of a young specimen. 



Same remark. 



4. Modiolaria marmorata, Forbes. Same remark. 



5. Area lactea, L. Same remark. 



6. Leda tenuis, Philippi. L. pygmcea, auct., not Von 



Minister. 



7. Nucula striatissima, Seguenza. 



8. Montacuta ovata, J. (MS.). 



9. Decipula ovata, J. 



10. Kellia symmetros, J. 'Valorous' expedition, 1750 



fathoms ; Norwegian Arctic expedition, 656 and 1 200 

 fathoms. 



11. Lassea rubra, Montagu. A single valve ; probably 



drifted. 



12. Woodia digitaria, L. Same remark. 



13. Tettina gladiolus, J. (MS.). 



