PLATE XVI. 



Antedon acoela, n. sp. 



Fig. 1. Side view, 



Fig. 2. Dorsal aspect of a genital pinnule, 

 Fig. 3. The pinnule of the second brachial, 

 Fio-. 4. A pinnule from the middle of the aim. 

 Fig. 5. A young individual, 



