PILOT-WHALE. 457 



given a full account of the anatomy of this species in the 

 " Transactions of the Zoological Society " (v.VIII. p. 235). 

 The Pilot- Whale attains a length of sixteen to twenty 

 feet, or even, it is said, of twenty-four feet. The 

 following are some of the dimensions of a female killed 

 in the Firth of Forth in April 1867, which we had the 

 pleasure of personally examining : 



In 1861, Dr. Gray described a skull received from 

 Bridport as specifically distinct, under the name of 

 G. incrassatus, and he has subsequently made it the type 

 of hislgenus Spharocephalus (P. Z. S., 1864, p. 244). 

 This skull, which is now in the British Museum, is, 

 however, so much water-worn that it seems unsafe to 

 consider it distinct until other similar specimens have 

 been procured. 



3 N 



