EXPLANATION OF PLATES. 



Plate 20. page of the 



description 

 Figs, i, ia, lb, ic, 2, 2a. Scriatopora hystrix Dana. Fig. 1, general view of colony from Murray Island, half 

 natural; figs, ia-ir, three branch terminals, each X3 (upper lips to calices are usually 

 more obvious). Fig. 2, part of Dana's type of the species, No. 346, U. S. Nat. Mus., natural 



size; fig. 2a, branch tetminal of the type, X3 73 



Figs. 3, 4. Scriatopora angulata Klunzinger, from Cocos-Keeling Island, natural size. Fig. 3, specimen 



from deep water of the lagoon; fig. 4, specimen from shallow water of the lagoon 74 



Plate 21. 



Figs. I, la. Pocillopora bulbosa Ehtenberg. Specimen so identified by Dana, No. 885, U. S. Nat. Mus. 



Fig. 1, general view, natural size; fig. la, part of a branch, X3 73 



Figs. 2, 3, 3a. Pocillopora damicornis (Pallas). Fig. 2, part of specimen so identified by Dana, natural 



size, No. 660, U. S. Nat. Mus. Figs. 3, 3a, specimens from Cocos-Keeling Islands; fig. 3, 



general view, X2/5 (photograph by Dr. F. Wood Jones); fig. 3a, a branch, natural size. 



Compare fig. 2 and fig. 3a 76 



Plate 22. 



Figs, i, ia, 2. Pocillopora dans Verrill. Fig. I, view of side; fig ia, view of top of specimen from Murray 

 Island, both natural size. Fig. 2, view of part of Verrill's type of species, natural size, No. 

 696, U. S. Nat. Mus 77 



Fig. 3. Pocillopora woodjonesi, new species. Side view of a frond, natural size. Enlarged view of the 



calices on plate 24, fig. 3 So 



Plate 23. 



Figs. I, 2, 2a. Pocillopora verrucosa (Ellis and Solander). Fig. 1, view of upper surface of part of speci- 

 men so identified by Dana, natural size, No. 695, U. S. Nat. Mus. Figs. 2, 2a, side view and 

 view of summit of a btanch of a specimen from Cocos-Keeling Islands; each natural size. ... 77 



Figs. 3, 4, 4a. Pocillopora elegans Dana. Fig. 3, view of upper surface of part of Dana's type, natural size, 

 No. 720, U. S. Nat. Mus. Figs. 4, 4a, view of summit and side of a branch from a colony from 

 Cocos-Keeling Islands, each natural size 78 



Plate 24. 



Figs. I, 2, 2a. Pocillopora eydouxi Milne Edwards and Haime. Fig. I, view, X1/2, of a specimen from 

 Murray Island. Figs. 2, 2a, specimen from Cocos-Keeling Islands; fig. 2, view of side, natural 

 size; fig. 2a, calices, X8 79 



Fig. 3. Pocillopora woodjonesi, new species. Calices X8. Side view of frond on plate 22, fig. 3 80 



Plate 25. 



Figs. I, ia, 2, 2a, 2b. Styloplwra mordax Dana. Fig. I, general view of Dana's type, natural size; fig. la, 

 calices, X4- Figs. 2, 2a, 2b, views of a specimen from Fanning Island; fig. 2, general view of 

 part of colony, natural size; fig. 2a, part of surface of branch, X3; fig. 2i, calices, X 8 81 



Plate 26. 



Figs. I, ia. Styloplwra pisiillata (Esper). Fig. I, general view of a colony, X1/2, from Murray Island; 



fig. ia, calices of the same specimen, X8 80 



Figs. 2, 3, 3a. Euphyllia glabrescens (Chamisso and Eysenhardt). Fig. 2, Dana's type of Euphyllia rugosa, 

 seen from above, natural size, No. 88, U. S. Nat. Mus. Figs. 3, 3a, views of a specimen 

 from Murray Island; fig. 3, general view, natural size; fig. 3a, calices, X2 82 



Plate 27. — Euphyllia fimbriala (Spengler). 



Figs, i, ia. Calicular views, natural size, of Dana's type of Euphyllia lurgida (No. 1893, Acad. Nat. Sci. 



of Phila.) 83 



Fig. 2. Calicular view, natural size, of Dana's type of Euphyllia mcandrina, No. 94, U. S. Nat. Mus. The 



specific identity of the two specimens seems obvious 83 



211 



