PLATE VI 



Fig. I. Female Sperm whale, Saldanha Bay, 1926. Note white um- 

 bilical splash, white lips, and throat grooves. 



Fig. 2. Male Sperm whale. South Georgia, 1926. Genito-anal region. 

 Note white umbilical splash extending on to flanks, corrugated sur- 

 face of body, post-anal ventral hump. 



Fig. 3. Male Sperm whales, Durban, 1930. Note white splash on flank 

 of farther whale ; on nearer whale corrugated body surface, dorsal 

 fin and smaller dorsal humps posterior to it. 



