Plate XIX. 



1. Notamia bursaria, zooecia enlarged, p. 233. 

 )C 2. Flustra foliacea, nat. size. 2a, Zooecia enlarged, 

 p. 236. 



3. Flustra papyracea, nat. size. 3a, Zooecia enlarged, 1 



p. 236. 



4. Flustra Carbasea, zooecia enlarged, p. 238. 



5. Membranipora membranacea, zooecia enlarged, p. 



241. 



6. Membranipora pilosa, zooecia enlarged, p. 240. 



1 



