64 On new Cyclostomatous Bryozoa from Madeira. 
p. 34) needs a little modification by the addition of the 
following clause at the end :—“ or in lines extending at right 
angles to the direction of their elongate lateral troughs.” 
Frondiporide. 
Frondipora maderensis, J. Y. Johnson. 
Shortly stipitate, irregularly ramose; branches sometimes 
upright, usually spreading laterally and curving retrorsely, 
rarely meeting and uniting. The ultimate branches (tertiary 
or quaternary) are short and lobe-like. 
The fasciculate cells open at the truncate ends of the 
upright branches and lobes; the orifices extend along the 
upperside of the lobes, but are not continued upon the 
branches. ‘The orifices are pentagonal, and smaller ones are 
intermixed. The smallest lobes have only from one to three 
orifices ; on others the orifices are seen in two connate series, 
The branches are subtriquetrous, 7. e. they are broader 
at the front than at the back. The anterior surface is 
obscurely granular; the posterior surface is faintly wrinkled 
transversely and is finely punctate reticulately. When fresh 
from the sea the zoarium is coloured a pale yellow, which 
fades to white. 
The largest of the specimens rises vertically but a short 
distance above its base, and then spreads laterally 39 millim. 
in one direction and 27 millim. at right angles thereto. All 
the specimens, which have been many years in my possession, 
were either attached to dead individuals of the coral Madracis 
asperula, M.-E. & H., or were seated on sponges so attached. 
This coral is found in deep water off the coast of Madeira. 
Reference may be made to Mr. Busk’s figures of /7rondi- 
pora palmata, Bk. (Cat. Cyclost. Pol. B. M. pl. xx. figs. 4, 5). 
The describer was not certain as to the locality from which 
his specimens came, but he believed they were brought from 
Australia. 
The species now described differs from 2”, palmata in these 
respects :—(1) the fasciculi of orifices are not continuous 
along the branches, but are confined to the ultimate lobes ; 
(2) the orifices do not open upon a raised portion of the 
horizontal branch or lobe, but open at once on the front of 
the lobe or at the ends of the upright branches; (3) Mr. Busk’s 
fig. 5 represents the branch between the lobes with a pitted 
surface. In the new species no part of the branch is visible 
between the lobes, the front of the branches and lobes being, 
as stated above, broader in front than behind. No part of 
the zoarium has a pitted surface. 
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