PLATE LXIII. 



Fig. A. Nettastoma parviceps (page 253). 

 South of Yedo, Station 232 ; depth, 345 fathoms. 



Fig. B. Nemichthys vifans (page 264). 



Mid Atlantic ; depth, 500 to 2500 fathoms. With separate view of head, twice natural 

 size. B', dentition of the upper jaw of the same specimen, four times natural 

 size ; B", terminal portion of the upper jaw of a specimen, showing the knob-like 

 termination, six times natural size ; B'", normal termination of tail. 



Fig. C. SyncqAobranchus hrevidorsalis (page 255). 

 Pacific, Station 218 ; depth, 1075 fathoms. 



