EXPLANATION OF PLATES. 
Puate 1. 
Fig. 1. Ophiomyxa flaccida (Say). Red form. Buccoo Reef, Tobago. Natural size. 
Fic. 2. Ophiomyxa flaccida (Say). Yellow Form. Buccoo Reef, Tobago. Natural size. 
PLatTE 2. 
Ophiothrix cerstedii var. lutea H. L. Clark. Buccoo Reef, Tobago. Natural size 
PiateE 3. 
Fic. 1. Ophioderma phoenium H. L. Clark. Buccoo Reef, Tobago. Natural size. 
Fic. 2. Ophioderma squamosissimum Lutken. Buccoo Reef, Tobago. Natural size. 
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