CRISIAD^E. 



9 



Alecto (Lamx.). Creeping, adherent, irregularly 

 branching ; cells horizontal, in one or more linear 

 series, with their extremities free. 



A. granulata. 

 major, 

 dilatans. Fig. 5 ; n.s. and mag. 



FAMILY II. 



Crisia (Lamx.). Cells in two rows, sub-alternate; 

 the orifice entire and terminal. 



C. eburnea. 



denticulata. Fig. 6 ; n.s. and mag. 



aculeata. 



geniculata. 



Crisidia (M.-Edw.). Cells in a single row; 

 the extremities free, diverging. 



C. cornuta. Fig. 7 ; n.s. and mag. 

 setacea. 



Sub- Order II. CHEILOSTOMATA. 



Polyzoary divided into distinct portions 

 or joints by flexible articulations . . . Articulate. 

 Polyzoary continuous and unjointed . . Inarticulata. 



