•ORPOISES AND DOLPHINS 



305 



Whale to follow a leader as sheep do is taken advantage of in 

 its pursuit. It is said that the hunters, when driving the 

 animals towards the shore, only lance one or two and these, 

 maddened with pain, get panic-stricken, and rushing forward 

 to become the leaders finally strand on the beach and are 

 followed to their death by the rest of the herd. 



The Pilot Whale of the North Pacific, G. scammoni, is entirely 

 black, as indeed are G. indica of the Indian coast and G. 

 brachypiera of the north coast of America. The last species 

 mentioned, as its trivial name implies, has shorter pectoral 

 fins than other members of this genus, their length being about 

 one-sixth of the total body length. The other species are not 

 subject to distinction by external characters, their claims to 

 specific rank being based chiefly on differences of the bones 

 of the skull. 



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