9 8 



THE SEAS 



individuality, becoming merely appendages on their 

 wives ! (Fig. 17). 



In the Flying Fish, Exoccetus, it is the pectoral fins that 

 have become modified to offer an enormously large surface 





B 



Fig. 17. 



A. Female deep-sea Angler (Photocorynus spiniceps) with dwarf male * attached 



to head (x i f). B. Enlarged drawing of male showing attachment (x 6). 



to the air, and so act as gliders when the fish leaps out of the 

 water (Plate 38). Mr. E. H. Hankin says, " When starting 

 a flight Exoccetus does not jump out clear of the water as a 



