226 NATURAL HISTORY OP 



Genus I. BicellariAj Blainville. {Bis, twice, and 

 cella, a cell.) 



Zoarmm erect, phytoid. Zooecia turbinate, or in the 

 form of a cornucopia, loosely united, more or less free 

 above. Aperture looking more or less upward, directed 

 obliquely inwards below ; inferior portion of the cells 

 subtubular usually, much produced, Avicularia, when 

 present, jointed and capitate. No vihracula. — T. H. 



1. B. ciLiATA, Linn. Plate XYII. fig. 6. 



Sertularia ciliata {Linn., BerJc., Turt.), Cellularia 

 ciliata {Pall, Bal.,Flem.,B'Orh., G. J., B.L., P. E. G., 

 JR. Q. C), Cellaria ciliata {E. and S., Larnk.), Bugula 

 ciliata {Chen), Crisia ciliata {Lamx., Temp., Van Ben.). 



Hab. : Cornwall, South Devon, Filey, Fleetwood, 

 Menai Straits {T.E.), St. Andrews {McL), Suther- 

 landshire {C. W. P.), Durham Coast {Eogg), Bangor, 

 Southport {A. 8. P.), Ilfracombe (P. E. G.). 



Ellis (CoralL, 38) names this species '' the Ciliated 

 Coralline.'^ It is a beautiful zoophyte of a pellucid 

 white colour, forming delicate tufts from \ — 1 inch in 

 height. On the upper part of each cell are 4 to 7 long 

 calcareous spines, which are easily detached when dry, 

 and one similar spine on the lower margin. Ellis 

 describes the spines as being like eyelashes. Their 

 bases are narrow, and seem to be jointed. 



Mr. Gosse (D. C, 144, plate vii.) describes and 

 figures this under the name Cellularia ciliata. He 

 describes the cells as " like a wineglass in form, with 

 the rim oblique. The spines are affixed by a joint to a 

 tubercle in the rim, and are four or five times as long 

 as the cells. The polyps have 12 tentacles." This 

 species also possesses avicularia, which are small and 

 have toothed beaks. ^'^The motions of this strange 



