Plate 33. 



1-3. Phormosoma hispidum A. Ag. 



1. Denuded plates of the actinal system (fragment) in prolongation of the odd interambuk- 



crum of a specimen from Station 3398. 



2. The same, seen from the interior. 



3. View of the interior of an imperfect specimen measuring 120 mm. in diameter, showing 



the lanterns and auricles and a number of the ambulacral branches ; all figures 

 • natural size ; Station 3400. 



