THE PORPOISES, 
267 
Closely allied to the sperm whales are the pigmy whales, 
represented on the Californian coast by Kogia Floweri 
(Fig. 304), which is nearly three metres (nine feet) in 
length, with a conical head. 
The nar whale {Monodon rnoaoceros) is distinguished by 
the long, spirally-twisted, horn- like tusk of the male, formed 
of the left upper incisor, which becomes nearly three metres 
long, the female having no visible teeth; there being two 
rudimentary incisors which never appear through the gum. 
It ranges from the coast of northern Labrador to the Arctic 
Seas. 
To the family of dolphins and porpoises belong the white 
Fig. 305. — South American Manatee. From Liitken's Zoology. 
whale, or Delpliinapterus leucas, which ranges from the 
Gulf of St. Lawrence northward; the grampus {Grampus 
grisetis); the black-fish, of which there are two species, 
one GloMcephaliis melas, ranging north of New York, and 
the other, G, brachypterus, extending to the southward; 
and the porpoises, of which the most common on our coast 
is Phoccena bracliycium, the rarer being Phocmiia lineata. 
On the coast of Labrador, as well as northward, occurs the 
thrasher or killer {Orca gladiator), which has large teeth 
and a high dorsal fin; it attacks whales, gouging out the 
flesh from their sides. Certain extinct whales, judging by 
their fossil remains, were pygmies in size, while the Zeu- 
glodon of the eocene tertiary beds of Alabama was an enor- 
mous serpent-like whale, which must haye measured oye;' 
70 feet in lengin. 
