482 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 2 



PLATE 43 



Fig. 83. Dihemtstephanus brachyderus from Oligoplites saurus. Ventral 

 view. 



Fig. 84. D. brachyderus from same host. Enlarged view of anterior end. 



Fig. 85. D. brachyderus. Enlarged view of anterior end. 



Fig. 86. D. brachyderus. Cross sections through aperture of oral sucker. 



( 



