340 HISTORY OF BRITISH ZOOPHYTES. 
quosa. It is attached by tubulous fibrous roots, proceeding 
from various parts of the polypidom; and Ellis mentions 
that they are often hooked, to give it a firmer hold. The 
dichotomous branches are jointed at their base, as shown 
by Ellis (plate xx. fig. 4). What skill and kindness in all 
His works! ‘The ramifications are connected by some 
short pliant ¢wbuli, which serve as so many hinges to the 
branches. to play to and fro freely, and comply with the 
violent motions of the sea. These hinges seem to consist — 
of two short tubes, one to each row of cells, and are so 
firmly united to each branch that they seem insensibly to 
pass into the cells of each.” (H/iis.) Ovarian capsules not 
common. 
5. CettuLtarta Hooxert, Sir WV. J. Hooker. 
Hab. Found by Sir William Hooker at Torquay; and 
by Prof. E. Forbes in Zetland. 
This beautiful little coralline is of great rarity. It is 
thus described by Dr. Fleming :—“ Height upwards of an 
inch, dichotomously branched; branches straight, stiff, 
brittle, divaricate; the cells are protuberant dorsally, and 
their rounded top is nearly free, projecting laterally, giving 
the edge a remarkably jagged outline, and the pearly ovaria 
are rounded.” In addition, Dr. Johnston states that near 
