PLATE XLVII. 



1. Lepralia foliacea, p. 300; one of the chambers of 

 the foliated zoarium. 



2 ^ a young specimen clasping a stem. After 



Milne-Edwards. 



3. , normal zooecia. 



4. , var. /3 (bidentata) . 



5. EscHAROiDES ROSACEA, p. 336; from a remarkably 



fine specimen of Mr. Norman's, about nat. size. 



6. ^  , nat. size. 



7_ ^ adult zooecia. 



g ^ cluster of cells from the margin of a colony. 



9 ^ a young zooecium, showing the avicula- 



rium before it is inclosed by the secondary orifice. 



10. PoRELLA L7EV1S, p. 331, uat. sizc. 



1 1 . , zooecia. 



