Plate 20. 



1-6. Podophora atrata Agaes. 



1. Seen from actinal side. 



2. The same as 1 seen from actinal side denuded of its spines. 



3. The same seen from the abactinal side. 



4. Seen from the abactinal side, denuded of its spines. 



5. Seen in profile facing the odd posterior interambulacrum. 



6. The same denuded, facing the odd anterior ambulacrum. 



The odd anterior ambulacrum occupies the center of the upper part of figs. 1, 2, 3, 

 and 4. 



All figures are natural size. 

 Hawaiian Ids., A. Garrett Coll. 



