1885.] 'lightning' and 'porcupine' expeditions. 29 



Family XX. Naticid.e. 

 A. Operculum chitinous or horny. Natica, Risso. 



1. Natica sordida, Phil. Moll. Sic. ii. p. 139, t. xxiv. f. 15: 

 B. C. iv. p. 218 ; v. p. 215, pi. Ixxviii. f. 3. 



'Porcupine' Exp. 1869: St. 1, Dingle P., 6, 7, 9, 11, 13-16, 

 23, 45, 45«. 1870 : Atl. 2, 3, 3a, 9-11, 13, Setubal B., 24, off C. 

 Sagres, 26-30, 36 ; Med. C. de Gata, 45, 50, off Jijeh, 55, Benzert 

 Koad, Rasel Amoush, off Rinaldo's Chair, Adventure Bank. 



Distribution. British coasts from vShetland to Devon, Denmark, 

 Ostend? (Malzine), Bay of Biscay, N. Spain, S.W. France, through- 

 out the Mediterranean and Adriatic, and off Madeira ; 7-488 fms. 



Fossil, Pliocene : Red and Coralline Crags, St. Erth, ('ornwall. 

 Middle and South of Italy. Post-tertiary : Caithness, Lancashire, 

 and Cheshire. 



Synonyms numerous. Judging from De Blainville's short de- 

 scription of N. fusca in the ' Dictionnaire des Sciences Naturelles,' 

 I suspect that it was a reddish-brown and uniforndy coloured variety 

 of N. milleijunctata. The present species may have been N. Icevida 

 of Laskey, or possibly the problematical N. castanea of Lamarck, 

 which has been assigned to so many French species. Deshayes 

 considered Lamarck's species to be a variety of his N. monilifera, 

 our N. catena. On the whole it may be better to retain the well- 

 known name of sordida, instead of wearying conchologists by a 

 further and perplexed discussion as to the priority and appro- 

 priateness of the several other names which have been bestowed by 

 different writers on this rather common and extensively distributed 

 species. The N. sordida of Swainson appears to have been N. 

 pluiubea of Lamarck. 



2. Natica pallida, Broderip and Sowerby. 



N. pallida, Brod. & Sow. in Zool. Journ. vol. iv. (1828-29), p. 372. 



N. groenlandica, B. C. iv. p. 216 ; v. p. 215, pi. Ixxviii. f. 2. 



' Porcupine ' Exp. 1869 ; St. 14, 45, 58. 



Distribution. Arctic seas in both hemispheres, Iceland, Faroe I., 

 Scandinavia, Great Britain southwards to the Dogger Bank, Labra- 

 dor, Canada, and New England, N. Japan, ? Ostend {Malzine) ; 

 2-1290 fms. 



Fossil. Pliocene ? and Post-tertiary : Red and Norwich Crags, 

 Siberia (Schmidt), Iceland {Morch), NorAvay and Sweden, British 

 Isles, Labrador, Canada and New England ; 0-400 ft. 



Synonyms. JV. pusilla, Gould (not Say), N. livida. Bean, N. 

 boreaiis and perhaps N. suturalis. Gray, N. groeiilandica (Beck), 

 MoUer, probablv A. beverlii. Leach, N. gouldii, Philippi, N. alba 

 and N. lactea (Loven MS.), Philippi, aud A^. bulbosa. Reeve. I 

 have given this long list of names to show the confusion and 

 difficulty which is so apt to perplex students when trusting to 

 certain works. Phihppi has, in Kiister's edition of the ' Conchyliea 

 Cabinet,' mistaken, as well as Forbes and Hauley, the present 



