EXTERNAL CHARACTERS OF BLUE WHALES 



309 



. . 6 7 8 



PERCENTAGE VALUE OF MEASUREMENT 



Fig. 45. Male Blue and Fin whales. Variations of measurement No. 13. 

 Anus to reproductive aperture. (Whales of all sizes.) 



/ 



~\ 



vN 



1 < 1 ■ n 



2 3 + 



PERCENTAGE VALUE OF MEASUREMENT 



Fig. 46. Blue whales. Variations of measurement No. 15. Dorsal fin, length at base. 



(Whales of all sizes.) 



Males. 



Females. 



