STAURIDIID^E. 01 



suddenly shortened to less than the one-twentieth part 

 of its length when extended, drawing the capsule back 

 with it in its contraction / J 



A pencil of long fine vibratile cilia surmounts each 

 capsule, and keeps it, when the peduncle is extended, in a 

 state of constant movement. 



Hub. On an old anchor from 40 fathoms, 30 miles east 

 of Holy Island, coast of Northumberland (R. Howse) : on 

 shells of Fusus antiquus from deep water, Cullercoats (J. 

 A.) : on Cellepora pumicosa, Seaham Harbour (G. Hodge) : 

 Inch Garvie (T. S. W.) : on stone in a rock-pool, Firth of 

 Forth (G. J. A.). 



Family VI. Stauridiidss. 



POLY FIXES clavate or subcylindrical, ivith true and J\ilsc 

 tentacula, the former capitate, and disposed in one or 

 more verticils ; the hitter rigid, without capitula, and 

 probably serving as tactile organs. 



Genus CLADONEMA, Dujard'm. 



Der. K\ac v os, a branch, ;incl I'ijpa, a thread (tentacle). 



GENERIC CHARACTER. Steins s'unple or branched, rooteil 

 by a creeping filiform stolon, the ivhole invested by a poly- 

 par y ; polypites borne on the summit of the stems and 

 branches, clavate, with a single verticil of four capitate 

 tentacula placed immediately below the oral extremity, and 

 disposed in the form of a cross, and beneath these four 

 false tentacles or tactile organs, also arranged in a cross, 



