Bulletin, Vanderbilt Marine Museum, Vol. IV 



Plate 108. 



Pyrgopsis schneehageni (Pfeffer) : A, dorsal sketch showing also the outline of the 

 pen which is visible beneath the transparent skin; B, detail of ornamen- 

 tation on ventral cartilaginous ridge; C, ventral sketch of head; 

 D, profile of sucker from tentacular arm; E, typical sucker 

 from a sessile arm ; F, tentacular arm. Figures 

 A and C enlarged x 1 and % ; figures B, 

 D, E, and F all greatly enlarged. 



