of British Mollusca. 127 



' Porcupine ' Mollusca, which Jeffreys, at the time of his 

 death, had carried as far as the Cerithiopsidge ; and I felt it 

 to be desirable to wait, as in case of such publication takino- 

 place I should be able to include species there recorded. 

 I now print the following paper, which brings the list of 

 British Mollusca on the descending arrangement as far as 

 the Cerethiopsidffi, which had been reached in Jeffrejs's 

 ascending classification. I shall not publish more. Revision 

 of arrangement and nomenclature is very desirable, but the 

 student, from the point to which I have brought him, will be 

 able to complete the list of known British Mollusca with little 

 difiiculty if he takes Jeffrejs's ' British Conchology ' as his 

 base, and adds the species since recorded, including those 

 procured bj the ' Porcujjine ' and other expeditions. The 

 following papers, which I believe to be almost, if not 

 quite complete, containing records of species added to the 

 British fauna, will be perhaps useful for this purpose : — 



(1) Jeffreys, J. Gwyn. — On the ' Valorous ' and other 



Mollusca, in which notes will be found with reference 

 to British species, Ann. & Mag. Nat. Hist. ser. 4, 

 vol. xviii. 1876, pp. 251 & 490, vol. xix. 1877, 

 pp. 153, 231, 317. 



(2) NOEMAN, A. M. — " On the Occurrence of Neomenia 



[So/enopus) in the British Seas," Ann. & Mao-, Nat. 

 Hist. ser. 5, vol. iv. p. 164. 



(3) Jeffreys, J. (iWYN. — " The Mollusca procured during 



the ' Lightning ' and ' Porcupine ' Expeditions, 1868- 

 70," Proc. Zool. Soc. 1878, p. 393, 1879, p. 533 

 1881, pp. 693 & 922, 1882, p. GoQ, 1883, p. 88, 

 1884, pp. Ill & 341, 1885, p. 27. 



(4) Jeffreys, J. Gwyn.— " New Species of C/ii(on lately 



found on the British Coasts," Ann.& Mag. Nat. Hist, 

 ser. 5, vol. vi. 1880, p. 31. 



(5) Murray, John.—" Exploration of the Faroe Channel 



inl880byH.M. hired Ship ' Knight Errant,' Proc. 

 Roy. Soc. Edin. 1881-2. The Mollusca by J. Gwyn 

 Jeffreys. 



(6) Jeffreys, J. Gwyn.—" Mollusca of the Cruise of the 



' Triton ' between the Hebrides and Faroes in 1882 " 

 Proc. Zool. Soc. 1883, p. 390; but the only stations 

 from which Mollusca are referred to in this paper, and 

 which are within the British area, are 1, 2, 10, 11, 13 

 the rest are in the Faroe Channel. 



(7) Marshall, J. T. — "On some new British Shells," 



Jouru. Conchol. vol. v. 1886-88, pp. 186 & 278. 



