PLATE VI. 



Figs. A, A'. Lepidothynnus huttonii, reduced in size, New Zealand. A. from a sketch ; 

 A', skeleton, from a photograph ; a. scale, nat. size. 



Fig. B. Branchiostoma pelagicum, 1 mm. long. Mid Pacific. 



Fig. C. Halaphya elongata, 26 mm. long, South Pacific. 



