PLATE V. 



Figs. A-D. Prymnothonus. A. 12 mm. long, North Pacific; B. 14 mm. long, North 

 Atlantic; C. 32 mm. long, reproduced from Voy. Sulph. Ichthyol., place 

 of capture unknown ; D. 44 mm. long, with separate view of dentition, 

 Antarctic. 



Fig. E. Ovum of a Scombresocid, 2| mm. in diameter Tropical Atlantic. 



