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 



