PLATE LIV. 



Benthesicymus crenatus (p. 329). 

 Lateral view. 



a. Ophthalmopod. 



b. First antenna ; upper surface. 

 b". First antenna ; under surface. 



c. Second antenna. 



c". Second antenna ; second joint of peduncle showing the ancecerite and base of 

 the scaphocerite. 



d. Siagon or mandible, with metastoma, d", in position. 



e. First siagnopod. 



/. Second siagnopod. 



g. Third siagnopod. 



h. First gnathopod. 



i. Second gnathopod. 



