PLATE XIII. 



Page. 

 Kij;. 1. I'ocillopora cegpitosa var. laysanengis, new variety. Coralliiin viewed from side, slightly 



reduced 88 



'2. PiiciUopora cespitosa var. laysanemis, new variety. Corallum viewed from above, slijihtly 



reduced 88 



3, 3a. Poclllopora cfsjntosa var. laysanenm, new variety. Two views of a third specimen. 



Fig. 3, side view of a branch, nat. size; fig. 3a, calices of the same, X about 7 88 



4. I'onllopoTa cexpilom. var. .ili/liij>iioniidef, new variety. Genera4 view of a corallum, very 



slightly reduced 89 



248 



