46 MARINE POLYZOA. 



Crisia plumosa> Lamour. Butt. Soc. Phil. 1812, iii. 185 ; Corall. 



62. 



Crisia fastigiata, Templeton, Ann. fy Mag. Nat. Hist. ix. 468. 

 Bicellaria plumosa, Blainv. Diet. So. Nat. Ix. 424 ; Act. 459. 

 Crisularia plumosa,, Gray, Brit. Rad. p. 111. 

 Hab. Britain. 



5. BUGULA DENTATA. PL XXXV. 



Cells biserial, oblong, rounded at each end. Aperture oval ; 

 three marginal spines on the outer side and one on the inner. 

 Avicularia lateral, capitate. Ovicell superior, cucullate (colour 

 blue). 



Acamarchis tridentata, Krauss, Zooph. d. Sudsee, p. 31. fig. 2. 

 Acamarchis dentata, Lamx. Exp. Meth. p. 6. tab. 5. fig. 1-3; 



Hist. Pol. Flex. p. 135. pi. 3. fig. 3. 

 Cellaria neritina, var. B., Lamk. ii. 191 . 

 Hab. Australia. New Zealand, Hooker, Lyall. Tasmania, 



Hooker. South Africa. 



Notwithstanding the difference in the number of spines on the 

 outer edge of the aperture assigned to this species by Lamouroux 

 and by Krauss, there can be little doubt but that they intend one 

 and the same species. The statement made by Lamouroux, that 

 his A. dentata is " d'une couleur plombee," is strongly confirma- 

 tory of this supposition. 



6. BUGULA MURRAYANA. PI. LIX. 



Cells multiserial, elongated, contracted about the middle and 

 downwards. Aperture oval, with two, three or four, incurved 

 marginal spines on the outer edge and one on the inner. A 

 strong, hollow, spinous process on each side of the top of the 

 cell, and a capitate articulated avicularium on the front of some 

 of the cells below the aperture. 



Flustra Murrayana, Bean, MSS. ; Johnst. Hist. Brit. Zooph, 



ed. 2. 347. t. 63. figs. 5, 6. 



? Sertularia spiralis, Olivi, Zool Adriat. 291. t. 6. f. 2. 

 Flabellaria spiralis, Gray, List of Brit. Rad. 106. 

 Hab. Britain (north and east). 



Fam. 9. FLUSTRAD^E. 



Polyzoary flexible, expanded, foliaceous, erect, sometimes de- 

 cumbent and loosely attached. Cells multiserial, quincuncial or 

 irregular. 



Flustra, Linn. ; Johnst. Brit. Zooph. ed. 2. 342. 

 Flustradae, Gray, Cat. Brit. Rad. B. M. 145, 1848 (part.). 



