10 



POLYZOA. 



Teibe I. Aeticulata. 



Polyzoaiy branched, erect ; branches 

 cylindrical, with the cells arranged on all 

 sides Salicornariada'., 



Polyzoary branched, erect ; branches 

 flat, linear, with the cells on the same 

 plane Cellulariadm. 



Family I. Salicornaeiad^. 



8alicornaria (Cuv.). Surface divided into lo- 

 zenge-sliaped spaces, by ridges surrounding tlie 

 cells. 



S. farciminoides. Fig. 8 ; n.s. and mag. 



Family II. Cellulaeiad^. 



GeUularia (Pall.). Cells in two or three rows; 

 more than four between two joints^ contiguous, 

 perforated behind ; no bird's-head nor whip. 

 C. Peachii. Fig, 9 ; n.s. and mag. 



Menipea (Lamx.). Cell oblong, tapering down- 

 wards, not perforate behind; one or two birds'- 

 heads in front below the aperture. 



M. ternata. Fig. 10 ; ?i. s. and mag. 



