Meerschwein, although the word is commonly used by sailors to designate all the smaller cetaceans, especially those numerous species which naturalists call "dolphins," it is properly restricted to the common porpoise of the British' seas (Phocaena communis, or P. phocaena).
I.-The Common Porpoise (Phocaena communis).
A third species, from the American coast of the North Pacific, has been described under the name of Phocaena vomerina, and another from the mouth of the Rio de la Plata as P. spinipennis.
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