PLATE LVTII. 



Fig, A. Platytroctes apus (page 229). 

 Mid Atlantic, Station 107: depth, 1500 fathoms. 



Fig. B. Bathytroctes rostratus (page 227). 

 Off Pernambuco, Station 120: depth, 67.'5 fothoms. With enlarged view of scale. 



Fig. C. Xenodermichthys nodulosus (page 230). 



Soutli of Yedo, Station 232 ; depth, 345 fathoms, c, a piece of the skin, slightly 

 magnified, with four luminous nodules. 



i 



