CATALOGUE 



OP 



MARINE POLYZOA. 



Fam. 10. MEMBRANIPORID^E. 



Char. Polyzoary membranaceo-calcareous or calcareous, ex- 

 panded, encrusting, sometimes foliaceous, contorted and sub- 

 erect. Cells horizontal, quincuncial or serial. 



Flustra, Linn. 



Flustradse, Gray, Cat. B. M. 145, 1848. 



Celleporidae (part.), Johnston, Brit. Zooph. ed. 2. p. 263. 



SYNOPSIS OF GENERA. 



* Cells more or less open in front, with raised margins. 

 1. MEMBRANIPORA. 



** Cells disposed in a radiate manner ; closed in front. 

 2. LEPRALIA. 



