PLATE XLVIL 



FIG. 



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 zocecia. 



4. - , var. /3 (BIDKNTATA). 



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



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



6. - , nat. size. 



7. - , adult zooecia. 



8. , cluster of cells from the margin of a colony. 



9. , a young zocecium, showing the avicula- 



rium before it is inclosed by the secondary orifice. 



10. PORELLA L.EV1S, p. 334, nat. size. 



11. - , zoceeia. 



