140 



THREE CRUISES OF THE " BLAKE." 



446), of a light pink, fading- into white in the younger branch- 



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Fig. 440. — Stylaster filogranus. 





(Pourtales.) 



lets. The color is diffused through the entire thickness of the 

 corallum. Another common Stylaster is D'lstichojJora foliacea 





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Fig. 447. — Distichopora foliacea. ^- (Pourtal&s.) 



(Fig. 447), characterized by its small calycles, not placed in a 

 furrow, irregular lateral pores, and serrated edge. 



