1902, also Meandra strigosa (Dana), Vaughan 1919, 

 also !Meandrina cerebrum (Eliis and Solander), Mat- 

 thai, (1928). 



Described by Matthai (1928), pages 55-63. 



Dull yellow to greenish brown in color. Dome 

 shaped masses, smaller than D. labyrinthijormis. Val- 

 leys twisting, not all interconnected, wider and deeper 

 than D. clivosa. Walls between valleys wider than D. 

 clivosa, but rarely grooved as in D. labyrinthiformis. 

 If present, grooves narrow and shallow, and usually at 

 edge of coral. Septa continue over the walls. Bermuda, 

 Florida, the Bahamas and the West Indies. 



yiemispherical, evenly convex. Valleys sinuous, dis- 

 continuous, up to 9 mm wide, average 6 mm, about 5 

 mm deep. Colline up to 4.5 mm thick, average 2.5 mm. 

 Septa 15-20 per cm. Paliform lobes. Septal margins 

 dentate, sides spinulose. Septa exsert and arched over 

 colline. Colline rarely with shallow, narrow, grooves 

 at edge of corallum. Columella, closely twisted tra- 

 becule. 

 26. Colpophyllia amaranthus (Muller) . 



Described by Matthai (1928) pages 107-109. 



Small and light, slightly convex mass with short stalk 

 beneath. Valleys green, walk brown. Valleys fairly 

 short and straight, not interconnected, grooved above 

 with thin boundary ridges. Florida and West Indies. 



Small, massive, vesicular, tight, and slightly convex. 

 Short stalk beneath. Valleys discontinuous and fairly 

 straight, often short, width i5-20 mm, up to 3 5 mm at 

 edge of corallum. Depth of valley i5 mm average, up 

 to 30 mm, shallower between centers. Colline at base 

 up to 20 mm, average iO mm, swollen by vesicular 

 endotheca, grooved above. Qroove about 2 mm wide, 



85 



