BRITISH ZOOPHYTES. 39 



Mr. Norman remarks that " in every instance the 

 Zoophyte was found at the posterior portion of shells 

 occupied by living mollusca, where it received the 

 benefit of the aqueous currents caused by the mollusc, 

 which unwittingly performed the kindly office of 

 feeding its hungry neighbour/' 



Hab. : Shetland (A. M. K, C. W. P.). 



Genus III. Tueris, Lesson. {Turris, a tower.) 



Stems short, rooted by a filiform stolon, bearing the 

 polypites on their summits. Coenosarc invested by a 

 polypary. Polypites claviform, with scattered filiform 

 tentacles. Gonozooids free and medusiform. — T. H. 



The polypites of this genus diSer from those of the 

 other genera of the Clavidce in producing medusiform 

 gonozooids. On this account Prof. Allman (G. H. 259) 

 refers the genus to the family Turridce, which he has 

 established for it. 



1. T. NEGLECTA, Les. Plate II. fig. 3. 



Cyansea coccinea (Davis), Clavula Gossii {T. 8. W.). 



Hab.: Isle of Wight, Portland {Forbes), Tenby 

 {Davis), Ilfracombe (P. H. G.), Queensferry (T. S. W.). 

 Height 3^2 ij^- Polypites crimson, borne on short 

 stalks. Tentacles 12, the upper row of 4 long and 

 erect, the rest scattered, shorter, and bent upwards. 



The gonozooid of this species was for a long time 

 considered as a separate animal, and was called the 

 "ruby medusa. ^^ Mr. Gosse, in his "Devonshire 

 Coast," describes the medusae as resembling beads of 

 coral when brought up on the muslin of the net. The 

 manubrium is large and of a dull crimson colour. The 

 ovaries become orange-coloured, and the ova enclosed 

 of a rich purple hue. Mr. Gosse was fortunate in 



