34 



DISCOVERY REPORTS 



15 IB 17 la 



Percentage of Total Length 



Fig. 37. Humpback whales. Variation of measurement no. 21. Greatest width of skull. 



Fig. 38. Humpback whale. Types of colour pattern. (After Lillie, 1915.) 



Table X. Humpback whales. Percentage occurrence of colour groups 



