EXPLANATION OF PLATE 5 



Fig. 1. Madripora solidu, n. sp., general view. X 1 Mi- 

 Fig. 2. Madripora solida, n. sp., cross-section of one of smaller branches. X 2. 

 Fig. 3. Siderastrea clarki, n. sp., general view of corallum. X 1%- 

 Fig. 4. Siderastrea clarki, n. sp., view of corallites. X 2. 

 Fig. 5. Thamnasteria sinuata, n. sp., general view of fragment. X 1%. 

 Fig. 6. Thamnasteria sinuata, n. sp., transverse section across corralites. X 2. 



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