G6 



BICELLAIIIID.E. 



Fig. 4. 



erect. The zorccia are essentially identical in character ; 



and such a species as D. spiniaera, Mac- 



Gillivray (woodcut, fig. 3), in a young 



state, when the cells are ranged in a single 



line, is hardly distinguishable from a 



Beania (woodcut, fig. 4). 



Throughout this family the cells are 

 loosely connected ; in Bicellaria, though 

 placed side by side, they are often really 

 disjunct. 



In some of the Bugula (e. g. B. Mur- 

 ray and) the branches are composed of 

 many rows of cells, and assume a some- 

 what Flustrine appearance; whilst such 

 forms as Bicellaria Alderi remind us of 

 the Cellulariida. 



Genus BICELLARIA, Blainville. 



Der. From bis, twice, and cella, a cell. 



BICELLARIA, Blainville, Diet. Sc. Nat 1830 : Gray : Busk, Ac. 

 OELLULARIA, Pallas (part.) : Fleming: Johnston: D'Orbigny. 

 CELLARIA (part.), Ell. & Sol. : Laink. 

 CRISIA (part),Lamouroux: Van Beneden. 



GENERIC CHARACTER. ZOARIUM erect, phytoid. 

 turbinate, or in the form of a cornucopia, loosely united, more 

 or less free above ; aperture looking more or less upward, 

 directed obliquely inwards beloiu ; inferior portion of the 

 cells subtubular, usually much produced. AVICULARIA, when 

 present, jointed and capitate*. No vibracula. 



IN Bicellaria the zoarium does not present the variety 

 of structures which we have in Menipea or Scrupocellaria ; 



* An exception IB presented by the Australian 2?. tuba, which possesses 

 a fixed aTicularium, borne at the top of a tall spinous process. 



