Plate I. 



Fig. 1. Kophobelemnon intermedium, n. sp. Tip of colony enlarged, pro-rachidial 



surface ( x 6). 

 „ 2. Acis idex, n. sp. Complete colony, nat. size. 

 „ 3. Kophobelemnon intermedium, VL.^^^. Tip of colony enlarged, meta-rachidial 



surface ( x 6). 

 „ 4. Echlnogorgia flexilis, n. sp. Twig enlarged ( x 9). 

 ,, 5. Acis ulex, n. sp. Portion of twig enlarged ( x 12). 

 „ 6. AcAs pustidata, Wright and Studer. Terminal portion of twig enlarged 



( X 10) front view. 

 „ 7. Acis pustidata, Wright and Studer. Terminal portion of twig enlarged 



( X 10) back view. 

 „ 8. Echinomuricea andamanensis, n. sp. Twig enlarged ( x 15). 

 „ 9. Echinomuricea reticulata. Terminal portion of twig enlarged ( x 12). 



