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th. Another suborder (Zeuglodontia) is extinct. The Sirenia were formerly included in the Cetacea, but are now made a separate order.

One of the Cetacea.

A division of the Cetacea, including the right whale and all other whales having the mouth fringed with baleen. See Baleen.

Furnished with a process or a mouth like a beak; rostrate. Beaked whale (Zoöl.), a cetacean of the genus Hyperoodon; the bottlehead whale.

The appendages to the jaw in some Cetacea, and to the mouth or jaws of some fishes.

A cetacean allied to the dolphins.

A nostril or spiracle in the top of the head of a whale or other cetacean.

A cetacean of the Dolphin family, of several species, as Delphinus Tursio and Lagenorhyncus leucopleurus, of Europe.

A cetacean allied to the grampus; -- called also bottle-nosed whale.

Of or pertaining to the Cetacea.

One of the Cetacea, or collectively, the Cetacea.

The division of Cetacea which comprises the dolphins, porpoises, and related forms.

A genus of Cetacea, including the dolphin. See Dolphin,

The division of Cetacea in which the teeth are developed, including the sperm whale, dolphins, etc.

A cetacean of the genus Delphinus and allied genera (esp. D. delphis); the true dolphin.

A toothed delphinoid cetacean, of the genus Grampus, esp. G. griseus of Europe and America, which is valued for its oil. It grows to be fifteen to twenty feet long; its color is gray with white streaks. Called also cowfish. The California grampus is G. Stearnsii.

Having finlike appendages or flukes instead of legs, as a cetacean.

Any right whale, or whalebone whale. See Cetacea.

An arctic cetacean (Monodon monocerous), about twenty feet long. The male usually has one long, twisted, pointed canine tooth, or tusk projecting forward from the upper jaw like a horn, whence it is called also sea unicorn, unicorn fish, and unicorn whale. Sometimes two horns are developed, side by side.…

A subdivision of Cetacea, including the sperm whale, dolphins, etc.; the toothed whales.