Genus Physeter 



P. catodon : The Sperm Whale or Cachalot. All oceans. Male may 

 reach 60 feet, the female usually half the length of the male. This is 

 the whale that has suffered the relentless persecution of whalers, 

 always a coveted prize on account of its spermaceti-permeated blub- 

 ber, and its excretory ambergris. The most dangerous of whales. 



Subfamily Kogiinae 

 Genus Kogia 



K. breviceps: The Pigmy or Lesser Sperm Whale. Atlantic, Pa- 

 cific, Indian, and Antarctic oceans; about 10 feet. 



Family Ziphiidae 



Genus: Hyperoodon rostratus: The Bottle-Nose Whale. North 

 Atlantic, Mediterranean, South Pacific, and Antarctic; 20 to 30 feet. 



Genus: Mesoplodon: "The Cow Fish;" Atlantic, Pacific, and In- 

 dian oceans. 



Genus : Ziphiiis: The Two-Toothed Whale. All oceans. 



Genus: Tasmacetus: South Pacific. 



Genus: Berardius: Pacific. 



Family Monodontidae or Delphinapteridae 



Subfamily Delphinapterinae 



Genus: Monodon monocerus: Narwhal or Sea Unicorn. Arctic 

 seas south of the ice-field. The male is characterized by an immense 

 tusk, sometimes 9 feet long, projecting like a spear from the left 

 side of the bluntly-rounded muzzle. The tusk is spirally grooved, and 

 is the source of the horn of the unicorn of heraldry. Mottled in color, 

 and about 18 feet long. 



Genus: Delphinapterus leucas: The White Whale or Beluga. Re- 

 sembles the Narwhal in size, shape, and habitat, but the tusk is 

 absent. 



Family Delphinidae 

 Genus Globiocephala 



G. melas: Pilot Whale or Black-Fish or Ca'ing Whale. Temperate 

 or tropical seas. Rounded head with dorsal fin. Takes its name from 

 the fact that one whale or pilot leads the way of the sometimes huge 

 schools; about 25 feet. 



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