130 



Fh;. 4. TlniiMfi'Un. iniwh->/i, var. njiii-ata, n. Portion enlarged (x 20). Note the spines on the pre- 



opercular scales. 

 ., ">. Lejiiitot/oiyiu n'rrUli, Wright and Studer. (a) Small portion of colony nat. size ; (l>) part 



enlarged ( x 15) showing the dense armature and a partially retracted polyp. 



6. Chrysogorijia indica, n. sp. (x 1J). To show mode of branching and arrangement of polyps. 

 ,, 7. Acamptogorgia bebrycoidts, var. robusia, n. Fragment nat. size. 

 8. Acamptogorgia bebrycoides, var. robusta, n. Twig enlarged ( x 10). Note the short and 



cylindrical polyps and the almost horizontal operculnin. 



PLATE IV. 



Fiii. 1. Keroi : idi's yracitis, Whitelegge. Portion of colony nat. size. 

 ,. 2. Kerotides grac His, Whitelegge. Part of twig enlarged (x 10). Note the large and regularly 



arranged spicules. 

 ,, 3. Keroi-'idi'.i i/mcilis, Whitelegge. Portion of main stem enlarged ( x 10) showing the smaller 



and more indefinitely arranged spicules. 

 4. Parisis indica, n. sp. Branch nat. size. 



,, 5. Parisis indica, n. sp. Part of axis enlarged showing the clusters of epizoic Palythoa. 

 ,, 6. Sympodium tenue, n. sp. Colony (x 1) showing the support of siliceous sponge spicules. 

 ,, 7. Disticlwi>tilum yiwiJt', Verrill. Part enlarged ( x 10). Note the small scarcely projecting 



polyps. 



,, 8. Parisis indica, n. sp. Basal portion ( x 1) showing the disc of attachment. 

 ,, 9. Parisis indica, n. sp. Part of a branch enlarged (x 1|). Contrast the proportions of node 



and internode with those in fig. 8. 

 ,,10. Chironephfhya macrospiculata, n. sp. Terminal portion enlarged ( x 12). Note the enormous 



spindles of the ccenenchyma. 



,,11. Suberogorgia kt'illikeri, var. ceylonensis, Thomson. Branch nat. size. 

 12. Suberogorgia kollikeri, var. ceylonensis, Thomson. Portion enlarged (x 10). 



PLATE V. 



FIG. 1. Acantliomuricea ramosa, n. g. et sp. Terminal twig enlarged ( x 10). Side to which the polyps 



are directed. 



2. Stereacanthia indica, n. g. et sp. Part enlarged ( x 10). 

 ,, 3. Acamptogorgia circium, n. sp. Twig ( x 2). Note the spinose appearance. 

 4. Acantliomuricea ramosa, n. g. et sp. Reverse side of fig. 1. 

 5. Umbellula rosea, n. sp. Rachis nat. size. 

 6. Pleurocorallium variabile, n. sp. Portion enlarged ( x 12). Note the arenaceous appearance 



of the ccenenchyma and the stellate form of the polyps. 

 ,, 7. Juncella miniacea, n. sp. Colony nat. size. Note gall. 

 8. Acanthomuricea ramosa, n. g. et sp. Branch ( x 1-J). 

 9. Paratjorgia tplendens, n. sp. Branch nat. size. 

 ,,10. Astrogorgia rubra, n. sp. Terminal portion of twig ( x 10). 

 11. Ar-itt spinosa, n. sp. Part of twig enlarged ( x 14). Note the difference in the spiculation of 



contiguous portions ; also the enormous plate-like spicules. 



12. Juncella miniacea, n. sp. Part enlarged ( x 12) showing the characteristic polyps. 

 13. Stenella horrida, n. sp. Terminal twig enlarged ( x 12). Note the rugose appearance. 

 ,, 14. Parayori/ia >///<</'.., n. sp. Cluster of autozooids enlarged; also showing the arrangement of 



the siphonozooids. 

 15. Acanthogorgia aspera, Pourtales. Side and end view of polyps ( x 10). 



