PLATE 16. 



Ophiomastix coeallicola H. L. Clark. Mer, Murray Islands, Australia. 



Fig. 1. Aboral view. X 1.3. 

 2. Oral view. 



Ophiomastix lutkeni Pfeffer. Riu Kiu Islands, Japan. 



3. Aboral view. X 1.2. 



4. Oral view. 



Ophiocoma alexandki Lyman. Angeles Bay, Lower California. 



5. Aboral view. Nat. size. 



6. Oral view. 



Ophiocoma valenciae Miiller and Troschel. Zanzibar. 



7. Aboral view. X 1.5. 



8. Oral view. 



