Plate 13. 



Hawaiian deep-sea corals. 



Figs. 1, la. Desmophylluin cristagalli Milne Edwards and Haime. Fig. 1, side 

 view, natural size; fig. la, calice, X 2, of the same specimen. 

 2,2a. Cyathoceras diomedeae Vaughan. Fig. 2, side view, natural size; 



fig. 2a, calice, X about 2, of the same specimen. 

 3,3a. Coryophyllia alcocki Vaughan. Fig. 3, side view, natural size; 



fig.—. 

 3«, calice, X 21/2, of the same specimen. 



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