U. S. NATIONAL MUSEUM 



PROCEEDINGS. VOL. 86 PLATE 54 



Ophioderma and OPHIOCOMA. 

 1, 2, ophioderma brevicaudum, Ophiocryptus stage, from station 12, Haiti (U. S. N. M. No. 

 E. 5437), aboral (1) and oral (2) views; 3, Ophiocoma pumila, young, from station 28, 

 St. John (U. S. N. M. No. E. 5559), aboral view; 4, Ophiocoma echittata, young, from 

 station 15, Haiti (U. S. N. M. No. E. 5514), aboral view; 5, Ophiocoma riisei, young with 

 naked disk, from station 17, Puerto Rico (U. S. N. M. No. E. 5522), oral view. All X 5. 



