Mr. E. A. Smith on a new Species of Turbo. 397 between the shape of the polyps and the shape and disposition of the spines. Those species which have triangular spines have polyps with longer tentacles than those with cylindrical spines, with a greater tendency to become regular in shape, though there are some in which the polyp is very oblong in horizontal outline, as in A. tetrasticha (pi. iii. fig. 30). Very long tentacles are found in A. spinalis (figs. 25, 26). In very few instances the tentacles are found retracted, as figured by Lacaze-Duthiers ; in most cases they are simply con-tracted ; and in many species they are probably not retractile at all." Out of the twelve species whose skeletons are then described three only have their polyps noticed and figured, viz. Anti-pathes spiralis, A. picea, n. sp., and A.felix, Pourt. The plate contains twenty-five figures characterizing the spines and their disposition on twenty species, together with eight figures characterizing the appearance of the polyps on seven species. Thus this Report, of February 1880, adds hardly any thing more to our knowledge of the polyp of Antipathes than MM. Milne-Edwards and Jules Haime had stated in 1857; nor are we likely to get more until some one with equal ability studies the living Antipathes after the manner of Mr. Moseley's investigations of Millepora &c, published in the ' Philosophical Transactions.' XLTX. — Description of a new Species of Turbo, and a Note on the Occurrence of Rossia Owenii on the Coast of North Wales. By Edgar A. Smith. Turbo cepoides. Testa anguste sed profunde perforata, ovato-conica, pallide fusca, viridi strigata alboque variegata. Anfractus 7, valde convexi, superne leviter depressi vel subexeavati, incrementi lineis con-spicuis, irregularibus, sublamellosis ornati, striis spiralibus in-conspicuis et sulcis paucis superne sculpti. Apertura fere circu-lars, spira paulo brevior, intus dilute salmonea, margaritacea. Long. 80 millim., diam. max. 70 ; apertura 38 millim. longa. Hob. ? The colour of this shell calls to mind the greenish striping of an onion, from which circumstance I have imposed upon it the name cepoides. The ground-colour is a light yellowish brown; the lines of growth are of a peculiarly imbricating
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