50 MARINE POLYZOA. 



2. CARBASEA. 

 Cells contiguous ; on one side only of the frond. 



Flustra, sp. Linn. ; Johnst. Brit. Zooph. 345. 

 Carbasea, Gray, Cat. Brit. Rad. 103, 117, 1848. 



a. Aperture occupying the entire front of the cell or very nearly so, 



1. CARBASEA PAPYREA. PL L. fig. 1, 2, 3. 



Cells oblong, narrowed and truncate below, convex, unarmed, 

 Avicularia ? Ovicell ? 



Porus cervinus, Marsigl. Hist. Phys. de la Mer, 64. pi. 6. figs, 



25, 26. 



Eschara papyrea, Pall. Zooph. 56. 

 Flustra Carbasea, Ellis and Soland. Zooph. 14. pi. 3. figs. 6, 7; 



Turt . Gmel. iv. 663 ; Jameson, Wern. Mem. i. 563 ; Turt. Brit. 



Faun. 209 ; Stew. Elem. ii. 436 ; LamJc. Anim. s. Vert. ed. 2. 



ii. 221; Flem. Brit. Anim. 535; Grant, Edin. New Phil. 



Journ. iii. Ill ; Johnst. Trans. Newc. Soc. ii. 264. pi. 9. fig. 4; 



Templeton, ut sup. cit. 469; Roget, Bridgw. Treat, i. 165. 



figs. 63, 64; & 172. figs. 69, 70; Daly ell, Edin. New Phil. 



Journ. xvii. 413 ; Rep. Brit. Assoc. 1834, 603; Blainv. Diet. 



Sci. Nat. Ix. 415 ; Johnst. Hist. Brit. Zooph. ed. 2. p. 345. 



t. 63. figs. 1, 2. 



Flustra papyracea, Esper, Pflanz. Flust. t. 2. figs. 1-3. 

 Carbasea papyracea, Gray, List of Brit. Rad. 103. 

 Hab. Britain (north and east). 



2. CARBASEA PISCIFORMIS. PL LV. figs. 1,2; & Pl.LVI.fig.6. 



Cells, viewed behind, elongated, truncated at both ends, con- 

 tracted at the waist ; in front, pyriform, much expanded in the 

 middle, contracted at top and tapering downwards, slightly ex- 

 panding again at the end. Ovicells immersed, marked with 

 radiating lines. 



Hab. Tasmania, JB. M. 



3. CARBASEA ARMATA. PL XLIX. figs. 1, 2. 



Cells, viewed behind, oblong, narrowed and truncate below ; in 

 front oval, with a projecting angle on each side about the middle. 

 Marginal cells each with a large sessile avicularium on the outer 



side. Ovicell ? 



Hab. South Africa. 



The peculiar character of this species, and by which it is readily 

 distinguished from all others, consists in the presence upon each 



