360 HISTORY OP BRITISH ZOOPHYTES. 



folds. The plaits or folds often unite and form cavernous 

 passages through the mass. The cells are small, and on 

 both surfaces of the sheet." (Couch.} 



2. ESCHARA FASCIALIS, PttttaS. 



Hab. Deep water. Isle of Wight, Pallas. 

 Much the same as the preceding, but the branches are 

 flat and narrow, and regularly subdivided. 



3. ESCHARA CRIBARIA. 



Hab. Deep water, in Berwick Bay. 

 This seems different from the preceding in form and size. 

 In length and breadth it is less than an inch. 



Genus XVIII. EETEPOEA, Lamarck. 



Gen. Char. Coral foliaceous, stony, fragile, netted: cells 

 opening only on the upper or inner side, short and not promi- 

 nent. Dr. Johnston. 



1. RETEPORA RETICULATA, Netted Coralline, Rev. Wil- 

 liam Borlase. 



Hab. Deep water, Cornwall. 



" Expanding to the extent of two or three inches ; more 

 or less cup-shaped, waved, uniting : the lobes are oval, 



