286 HISTORY OF BRITISH ZOOPHYTES. 



Genus VIII. EUCRATEA, Lamouroux. 



Gen. Char. " Polypidom confervoid, jointed, subcalcareous ; 

 the branches consisting of a single row of bent cells, the orifices 

 of which are on one aspect, oblique, subterminal or lateral." 



1. EUCRATEA CHELATA, Mils. (Plate XV. fig. 53.) 

 Hab. Brighton, Mr. W. W. Saunders ; Hastings, Mr. 

 Tumanowicz; Devonshire, Rev. T. Hincks; Scarborough, 

 Mr. Bean; Cork Harbour, J. V. Thompson; Ayrshire, D. L. 

 Ellis gives the following description of it: "This 

 beautiful coralline is one of the smallest we meet with. It 

 rises from tubuli, growing upon Fuci; and passes from 

 thence into sickle-shaped branches, consisting of simple 

 rows of cells, looking, when magnified, like bulls' horns 

 inverted, each one arising out of the top of the other. The 

 upper branches take their rise from the fore part of the en- 

 trance of a cell, where we may observe a stiff short hair, 

 which seems to be the beginning of a branch. The open- 

 ing of each cell, which is in the front of its upper part, is 

 surrounded by a thiu circular rim; and the substance of 

 the cells appears to consist of fine transparent shell or coral- 

 like substance." The cells taken separately are not unlike 

 a slipper, though the mouth would require to be a little 



