126 



CELLULARIA. 



Generic Character: Polypidom calcareous or membratro-* 

 calcareous, confervoid, divided sub-dichotomously, the 

 divisions narrow, composed of two alternating series of 

 oblong sessile cells on a single plane ; the apertures ter- 

 minal, oblique, facing one way and usually covered with 

 an operculum. Polypes ascidian. 



CILIATED CORALLINE. C. Ciliata. White, erect, 

 dichotomously branched ; cells distinctly alternate, all 

 opening on one side ; apertures oblique, with four or five 

 long bristles on the upper and outer margins. PI. xxiih, 

 fig. 1. 



Ciliated Coralline, Ellis' Coral., p. 38, pi. 20, fig. d D. 

 Sertularia ciliata, Turton's Lin., vol. 4, p. 685. Stewart's 

 E!em., vol. 2, p. 448. Cellularia ciliata, Flem. Brit. An,, 

 p, 540. Cellaria ciliata, Ellis and Solander's Zooph,, 

 p. 24, no. 6. Crisia ciliata, Lamouroux's Cor. Flex., p. 139, 

 Templeton in Mag. Nat. Hist., vol. 9, p. 468. Cellularia 

 ciliata, Johnston's Brit. Zooph., p. 290, pi. 38, fig. ] and 2. 



Hab. On Corallines and sponges, near the Eddystone 

 lighthouse ; not common. Mount's bay. 



This minute and delicate species grows in down-like tufts 

 to the height of half-an-inch. It is white, calcareous, and 

 dichotomously branched. The cells are distinctly alternate, 

 narrow at the base, and enlarged above; the apertures are all 

 turned on one side, and are very large, oblique, with four or 

 five hollow spines, which, when perfect, are about four times 

 as long as the diameter of the cell; these are situated at the 

 upper and outer labial rim. Over the apertures are helmet- 

 shaped pearly lids, which are raised in drying. 



CREEPING STONY CORALLINE. C. Scruposa. Creep- 

 ing, dichotomously branched ; cells in a double series 

 alternate; apertures round, unaroied, with a stout an^le 

 at the superior and external margin. PL xxiii., fig. 2. ° 

 Creeping Stony Coralline, Ellis' Coral., p. 38, no. 4, pi. 20, 



fig. c C. Sertularia scruposa, Turton's Lin., vol. 4, p. 685. 



Stewart's Elem., vol. 2, p. 448. C. Scruposa, Fleming's 



Brit. An., p. 539. Cellaria scruposa, Ellis and Solander's 



Zooph., p. 23, no. 5. Crisia scruposa, Lamouroux's Cor. 



Flex., p. 139. Templeton in Mag. Nat. Hist., vol. 9, p. 469. 



Cellularia scruposa, Johnston's Brit. Zooph., p. 291, pi. 38, 



fig. 5 and 6. Bellamy's Soulh Devon, p. 270. 



Hab. On the roots of sea weed, on Corallines, and on 



the back of the Corwich crab. Whitsand bay. Looe. 



Polperro. Lantivet bay. Fowey. Goran. Port Loe*. 



Mount's bay. 



