129 



fastigiala, Bluraenbach'a Man., p. 273. Fleming's Brit. An., 

 p. 539. Celtaria plumosa, Ellis and Solander's Zooph., 

 p. 21. Crisia fastigiala, Templeton in Mag. Nat. Hist., 

 vol. 9, p, 468. Acamarchis plumosa, Johnston's Brit. Zooph., 

 p. 294, pi. 39. 



Hab. At short distances from the shore, on rocky. ground. 

 Polperro, rare. Falmouth, Miss Warren. 



This confervoid species attains the height of four inches, 

 but is more commonly found about two and half or three. 

 It is calcareous, of a delicate flesh colour, fading in death 

 to white, and is dichotomously branched. The branches are 

 slender, and composed of two rows of alternating cells, all 

 opening on the same surface. The cells are oblong, dia- 

 phanous, like porcelain, polished, with a spine cn the upper 

 and outer angle. The ovaries are pear-shaped and situated 

 over 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 

 impossible to decide on their specific characters; and it was 

 not till the examination of a tolerably perfect specimen shown 

 me by Miss Warren, of Flushing, that the specific characters 

 were identified. In old specimens the cells become obsolete 

 and the branches deformed and stunted. 



Dr. Johnston has arranged it as Acamarchis instead of 

 Ccllu/aria, but as the characters have a great degree of same- 

 ness in description as well as figure it is here united with 

 Cellnlaria. To the experienced naturalist, however, there 

 will appear characters which approach to Flustra, but not 

 more so than in C. avicularia, and both are here united 

 in one genus. 



FARCIMIA. 



Generic Character: Polypidotn rooted, plant-like, cal- 

 careous, diehotomous ; the branches cylindrical, regularly- 

 jointed, with immersed rhomboidal cells diverging from 

 the axis, disposed in quincunx, and opening on the suriacc; 

 the apertures lateral, plain, non-opei culate. 



FAIICIMIA SALICOKNIA. Branches composed of ono 

 cylindrical articulation, jointed only at their origins and 

 terminations ; surrounded with lozenge shaped cells. 

 Pi. xx., fig. 3. 



Coralliua fistulosa fragilis, Itaii, Hist., vol. 1, p. G5. 

 Bugle Coralline, Ellis' Coral., p. 40, pi. 23. Tubuiaria ba- 

 tulosa, Turton's Lin., vol. 4, p. (J(j6. fciewajt's E!em., vol. 2. 

 p. 4;j8. Cellularia farciminoides, Ellis and Colander's 

 Zooph., p. 26. Farcimia fistulosa, Fleming's Brit. An., 

 p. 534. Salicornia fistulosa, Templeton in Mag. Nat. Hist., 

 vol. 9, p. 4G9. 



