Vacghan. — Madreporaria. 



PLATE 2. 



Figs. 1, la, 16. Madrepora galapagensis, sp. nov., p. 63. Fig. 1, view of 

 a single branch, natural size ; fig. la, the same branch, X 2 ; fig. lb, a 

 calice, X 4. 



Figs. 2, 2a. Pocillopora diomedeae, sp. nov., p. 65. Fig. 2, general view of a 

 branch, natural size ; fig. 2a, calices, enlarged about 8 times. 



