! 29 
fostigiata, Blumunbach’s Man., p. 273. Fleming’s Brit. An., 
P. 539. Cellaria plurnosa, Ellis and Solaudcr’s Zooph., 
P> 21. Crisia fastigiata, Templeton in Mag. Nat. Hist., 
*°1. 9, p,468. Acamarchis pluuiosa, Johnston’s Brit. Zooph., 
P- 294, pi. 39. 
Hab. At short distances from the shore, on rocky ground. 
Dolperro, rare. Falmouth, Miss Warren. 
This confervoid species attains the height ot four inches, 
lint is more commonly found about two and halt or three. 
It is calcareous, of a delicate flesh colour, lading in death 
to white, and is dichotomously branched. The branches are 
lender, and composed of two rows of alternating cells, all 
°Pening on the same surface. The cells are oblong, dia- 
phanous, like porcelain, polished, with a spine on the upper 
a nd outer angle. The ovaries are pear-shaped and situated 
°Ver the apertures. This species is liable to so much dis- 
figuration that it is not easy at all times to detect it. I have 
procured many specimens in such a state that it was found 
^'possible to decide on their specific characters; and it was 
hot till the examination of a tolerably perfect specimen shown 
hie by Miss Warren, of Flushing, that the specific characters 
"'ere identified. In old specimens the cells become obsolete 
a hd the branches deformed and stunted. 
Dr. Johnston has arranged it as Acamarchis instead of 
De Uularia , but as the characters have a great degree of same- 
ness in description as well as figure it is here united with 
C cllula ria. To the experienced naturalist, however, there 
appear characters which approach to Fitistra, but not 
|h°re so than in C. avicularia, and both are here united 
l h one genus. 
FARCIMIA. 
® e «eric Character: Polypidom rooted, plant-like, cal- 
careous, dichotomous ; the branches cylindrical, regularly 
jointed, with immersed rhomboidal cells diverging from 
l he axis, disposed in quincunx, and opening on the surface; 
l fie apertures lateral, plain, non-operculate. 
^ARciMIA SALICORNIA. Branches composed of one 
c jlindrical articulation, jointed only at their origins and 
terminations ; surrounded with lozenge shaped cells. 
^1- XX., fig. 3. 
jCoraliina fistulosa fragilis, Raii, Hist., voi. 1, p. 65. 
Coralline, Ellis’ Coral., p. 46, pi. 23. Tubularia fi s - 
aiosa, Turtou’s Lin., vol. 4, p. 666. Stewart’s Elem., vol. 2. 
438_ Cellularia farciminoides, Ellis and Solander’s 
°opli., p . 26. Farcimia fistulosa, Fleming’s Brit. An,, 
&3 4. Salicornia fistulosa, Templeton in Mag. Nat. Hist., 
• 9 > p. 469. 
