058 
VERTEBRATA. 
GEEENLANDER SPEARING A NARWHAL. 
Other species o. spermaceti-wliale are mentioned as follows : 
Tlie Mexican Sperm-Whale, C. Colneti, an inhabitant of the North Pacific, the South Seas, 
and equatorial oceans, and often referred to the last species. 
The South Sea Sperm-Whale, G. polycyphus, is found in the Southern Ocean, and often 
spoken of as the Cachalot or Sperm-Whale. 
Genus KOGIA : Kogia. — This name is given by Dr. J. E. Gray to a form of whale with a 
shorter head, wdiich has been taken at the Cape of Good Hope. 
The Short-headed Whale, K. hreviceps, of Gray, is the only species, and has been described 
from a single skull in the Paris Museum. It has been regarded by some as the young of the 
Sperm-Whale. 
Genus PHYSETER : Phijse.ter. — This is the generic term applied by Linnssus and many sub- 
sequent writers to the Sperm-Whale, but it was originally applied by Artedi to the Blackpish, 
to which Dr. J. E. Gray has restored it in the British Museum Catalogue. 
The Blackfish of Gray, P. Tursio^ probably the Delpli'inus glohiccps^ or D. grampus of 
Ouvier, is of a black color ; one taken off the coast of Scotland was fifty-two feet long. 
THE DELPHmiD^. 
The Delphinid^ or DolpMm^ the family of which the Dolphin is the type, and which includes 
not only the Dolphin but the Porpoise^ &c., are more numerous than those of the other Cetacea. 
They are distinguished from the last family by the smaller and more proportionate head ; and in 
those species which have lost their upper teeth at an early age, by there being no regular pits in 
the gums of the upper jaw for the reception of the teeth of the lower one ; and also by the hinder 
part of the skull not being deeply concave and surrounded on the sides and behind by a high ridge. 
The Genus HYPEROODON, Hyperoodon^ presents several species: the Bottle-Head or 
Beaked-Whale, of Pennant, H. Butzkopf^ inhabits the North Sea. 
The Beaked Hyperoodon, H, rostratum, inhabits the North Sea. It differs from the last 
species in having the dorsal fin behind the middle of the back. It has been taken in the Thames 
and the Huraber, and skeletons exist in the museums of Edinburgh, Bristol, and Liverpool. 
