slightly larger than O. diffusa. Found in Bermuda and 

 the West Indies, not so far in Florida. 



Branches more open and irregular than O. Diffusa, 

 often over i foot high. Larger branches ii to 20 mm 

 in diameter in large specimens. Corallites usually cir- 

 cumvallate, low and scarcely exsert. Curved costal 

 striations cross circumv alleys. Calices average 4 mm 

 ranging from 3-5 mm in diameter. 



39. Oculina varicosa Lesueur. 

 Described by Verrill (1902), page 173. 



The largest of the ivory corals up to 2 feet high. 

 Branches fewer and longer than O. diffusa and O. vari- 

 cosa, and main part much wider. Cups swollen at 

 base, except on smaller branches, with bottom 10 mm 

 or more across, and top 3.5 mm. Comparatively rare, 

 found in Bermuda and occasionally on the Florida 

 Reef and in the West Indies. 



'Branching irregular, arborescent, main trunk up to 

 50 mm, branches lon(j, crooked and tapering. Corallites 

 mammiform, bases less swollen at tips of branches. 

 Costal striae well developed, about 24, sometimes lack- 

 ing on larger branches. Septa 2 4 to 36, rarely more in 

 large corallites. Calices 2.75 io 3.50 mm in diameter, 

 rarely 4 mm, bases of corallites up to 12 mm wide and 

 8 mm hic^h. 



40. JAeandrina meandrites (Linnaeus) , (Plate 29) , 

 Also Pectinia meandrites, (Matthai, 1928) . 

 Described by Matthai (1928), pages 161-166. 

 Forms large boulders, flat or rounded, up to over 1 



foot. Valleys long and twisting but not all intercon- 

 nected, about 10 mm wide, 8 mm deep. Wall has 

 groove about 2 mm wide and about 4 mm deep. About 

 7 larger septa per cm, over 1 mm thick, no teeth on 



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