PLATE XXIV. 



Figure 1. A calicular view of a corallum of LATiMiEANDRA parvula, Duncan^ with long series, 

 natural size. 



2. Caryophyllia Gajensis. The corallum^ side view. 



3. The calice, slightly magnified (x 1*5) . 



4. MoNTLivALTiA Jacquemonti, D'Archiac & Haime. The corallum, natural size. 



5. Pachyseris exarata, Duncan. The corallum, natural size. 



6. A portion, magnified. 



7. Pachyseris afpinis, Duncan. A portion of the coral, natural size. 



8. A portion, magnified. 



9. PLEsiASTRiEA cosTATA, Duucan. A portiou of the coral, natural size. 



10. A calice, ohlique view, magnified. 



11. Antillia Indica, Duncan. The corallum and calice^ natural size. 



