EXTERNAL CHARACTERS OF BLUE WHALES 



307 



PERCENTAGE VALUE OF MEASUREMENT 



Fig. 43. Blue whales. Variations of measurement No. 21. Skull, greatest width. 



-i ' r 



678 



PERCENTAGE VALUE OF MEASUREMENT 



Fig. 44. Blue whales. Variations of measurement No. 24. Tail, depth at dorsal fin. 

 Males. Females. 



7-2 



