Plate 34. 

 1-3. Phormosoma hispidum A. Ag. 



1. Interior view of an imperfect specimen showing the imbrication of the interambulacral 



areas and the reverse imbrication of the actinal system and ambulacral zones in a 

 specimen measuring about 140 mm. in diameter ; Station 3400. 



2. A part of the actinostorae, seen from the exterior, from fragments of a specimen of 



about the diameter of fig. 1 ; Station 3332. 



3. The same fragment as fig. 2, seen from the interior. 



All figures natural size. 



fl 



