HYDIIOID ZOOPHYTES. 37 



length, fixed to the central stem, which is fixed by creeping 

 fibres to the surface to which it is attached. Thej are 

 transparent, narrow, and terminate in a ball, on which the 

 tentacula are very numerous, as many as forty-five having 

 been counted on a single head. The neck to each head is 

 glassy and wrinkled; they stand out from the stem in six 

 circles, at nearly equal intervals ; and the whole Zoophyte, 

 as figured in the ' Marine Zoology,' would form an elegant 

 design for a circular hat-rail. 



EUDENDEIUM RAMEUM. 



Of the genus to which this tree-like Zoophyte belongs, 

 Mr. Johnston gives the following technical description : — 



"Polypidom rooted by creeping fibres, erect and vari- 

 ously branched, the fibres cylindrical, tubular, filled with a 

 soft pulp. Polypes hanging from the extremity of every 

 branchlet, non-retractile, roundish, somewhat pedicled, 

 naked and fleshy ; the body encircled with a zone of fili- 

 form tentacula ; the mouth central and sub-tubular. 



" Eudendrium'^ is from two Greek words signifying the 

 adjective icell and the noun tree. 



E, rameum is found on shells and stones in deep water, 

 at Shetland, Scarborough, Northumberland, Whitehaven, 



