68 EICELLAUIIDiE. 



AH the known species of Bicellaria, with the excep- 

 tion of the two that occur in Britain, are natives of the 

 Australian seas. 



Bicellaria ciliata, Linnseus. 



Plate YIII. figs. 1-5. 



Ciliated Coralline, Ell. Corall. 38, no. 5, pi. 20, figs. d. D. 



Sektularia ciliata, Lhm. Syst. ed. 10, 815, ed. 12, 1316. 



Cellulakia ciliata, Pall. Elench. 74: Flem. B. A. 540: Joknst. B. Z. 



ed. 2, 335, pi. Ivii. figs. 1, 2: Dalyell, Eem. An. Scotl. i. 



239, pi. xlvii.: D'Orhigmj, Pal. Fran9. Terr. Cret. v. 49. 

 Cellaria ciliata, Ell. S,- Sol. Zooph. 24 : LamUc. An. s. Vert. ed. 2, ii. 186. 

 BuGULA ciliata, Okoi, Lehrb. Naturg. 89. 

 Crisia ciliata, Lamx. Pol. cor. flex. 60 : Van Ben. Eeclierches, 51, pi. vi. 



figs. 9-11. 

 Bicellaria ciliata, 5/amy.Actinol. 459, pi. Ixxviii. fig. 2: Sitsk, B.M. Cat. 



i. 41, pi. xxxiv. : Smitt, CEfvers. K. Vet. Akad. Forhandl. 



1867, 288 & 333, pi. xviii. figs. 1-3. 



Zoarium of a pearly-white colour, forming delicate feathery 

 tufts ; dichotomously branched, branches curved inwards 

 at the extremities. Zooecia alternate, turbinate, enlarged 

 above, and narrowing off rather abruptly towards the 

 bottom, the inferior portion cylindrical, everted and free 

 at the top ; aperture elliptical, oblique ; 4-7 very long, 

 slender, incurved spines on the upper margin, and one 

 placed centrally immediately below the aperture ; one 

 or two spines on the dorsal surface. Avicula- 

 ria situated on the outer side of the cell, a ^^- ^^ 

 little below the aperture, small, with a ser- 

 rate beak. Ooecia pedunculate, helmet- 

 shaped, attached to the inner side of the cell. 



Pohjpide with 12-16 tentacles. Py-imary cell 

 jointed at the base to a short process from 

 the radical fibre, widening upwards, elongate; 

 aperture terminal, suboval, very slightly ob- 

 lique, with about 11 spines (woodcut, fig. 5). 

 Height commonly about | inch. 



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