1885.] 'lightning' and 'porcupine' expeditions. 61 



B. Eumeta, Morch. Apex blunt. 



5. Cerithiopsis mktax.e, Delle Chiaje. 



Murex meta.va, D. CK. Mem. iii. p. 222, t. xlix. f. 29-31. 



G. tneta.va, B. C. iv. p. 217 ; v. p. 217, pi. Ixxxi. f. 4. 



' Poicupiiip ' Exp. 1870 : Atl. St. Vigo B., Tangier B. ; Med. 50, 

 Rasel Amoush, Adventure Bank. 



Distribution. Slietland to the Land's End, Gulf of Gascony, 

 Mediterranean and Adriatic, Madeira, and Canaries ; 7-913 fms. 



Fossil. Pliocene : Red and Coralline Crags, Biot, Pisa, Calabria, 

 and Rhodes. 



To the list of synonyms given in ' British Conchology ' add 

 CeritJdum ruguJosiim, Sowerby, C. subcylindricum, Brusiua, and 

 C benoitianiim, Monterosato. 



The description and figure of Delle Chiaje are unmistakable. 

 Professor Martens says that the specific name ought to be metaxce. 

 He is right, and I have altered it accordingly. 



A specimen from the Bay of Naples, which was obligingly given 

 me by the late General de Stefanis, is almost needle-shaped, being 

 much more slender and narrow than usual ; it has only three rows 

 of tubercles on each whorl, the middle row being more prominent 

 than the two others. The first or apical whorl is slightly twisted. 

 Another specimen of the typical form is milk-white. 



6. Cerithiopsis costulata, MoUer. 



Turritellal costulata, Moll. Ind. Moll. Grcenl. p. 10. 



C costulata, B. C. iv. p. 272 ; v. p. 217, pi- Ixxi. f. 5. 



' Lightning ' Exp. St. 2, 5. 



' Porcupine' Exp. 18(39: 4, 23a, 25, Rockall Bank, 65, 89, The 

 Minch. 



Distribution. Norway (McJndreiv and others), Sweden (Mu/m) 

 Shetland {J.G.J.), between the Hebrides and Faroes ('Triton 

 Exp.), Iceland (Torell), off C. Farewell (' Bulldog' Exp.), Green- 

 land {Moller), G. St, Lawrence {Whiteaves), B. Fundy (Ferrill) 

 82-1622 fms. 



Fossil. Post-tertiary (J. G. J. and Thorburn), Wick {Peach), Co 

 Antrim {Hyndman, Waller, and J. G. J.) ; 60 feet to 25 fathoms 



Cerithium arcticum, MiJrch, Oerithiopsis nivea, Jeffr., and 

 Cerithium naiadis, Woodward. 



7. Cerithiopsis trilineata, Philippi. 



Cerithium trilineatum, Phil. Moll. Sic. i. p. 19.5, t. xi. f. 13 

 (1836). 



•Porcupine' Exp. 1870: Atl. St. 30 (young). 



Distribution. Tliroughout the Mediterranean, and the north-eastern 

 coasts of the United States of America; below low-water mark to 

 20 fathoms. 



Fossil. Miocene : North-west Germany, Vienna Basin and North 

 America {Olto Meyer). Pliocene: Red and Coralline Crags, Italy, 

 Rhodes, and Madeira. 



