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



B. Eitmeta, Morch. Apex blunt. 



5. Cerithiopsis mf.tax.e, Delle Chiaje. 



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



C. inetaxa, B. C. iv. p. 217 ; v. p. 217, pi. Ixxxi. f. 4. 



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

 Rasel Amoush, Adventure Bank. 



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

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



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

 and Rhodes. 



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

 Ceritliiitm ruffulosum, Sowerby, C. subc;//indricum, Brasilia, and 

 C'. benoitianum, 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 irom 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 visual ; it has only three rows 

 of tubercles on eacii 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, Miiller. 



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. 18G9: 4, 23a, 2.5, Rockall Bank, 65, 89, The 

 Minch. 



Distribution. Norway {McJndreio and others), Sweden {Malm), 

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

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

 land {Mollei-), G. St. Lawrence (TTAiteaves), B. Fundy (Ferrill); 

 82-1022 fms. 



Fossil. Post-tertiary (./. G. J. and Thorburn), "VVick {Peach), Co. 

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



Cerithium arcticum, Morch, Cerithiopsis 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. Tiiroughout the Mediterranean, and the north-eastern 

 coasts of the United States of America; below low-watermark to 

 20 fathoms. 



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

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

 Rhodes, and Madeira. 



