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CHAP. XVII,] MAMMALIA. 203
Southern Hemisphere ;
ZalopJms (2 species), North Pacific, from
California to Japan, and the shores of Australia and New Zea-
land ; Humetopias (1 species), Behring's Straits and California.
Fossil Otariidce.— Eemains supposed to belong to this family
have been found in the Miocene of France.
Family 34.—TEICHECHID^. (1 Genus, 1 Species.)
Neotropical
Sub-regions.
Neahctic
Sub-regions.
4
General Distribution.
Pal^arctic
sub-hegions.
Ethiopian
Sub-regions.
Oriental
Sub-regions.
Australian
Sub-regions.
The Morse, or Walrus (Trichecus rosmarus), which alone
constitutes this family, is a characteristic animal of the North
Polar regions, hardly passing south of the Arctic circle except on
the east and west coasts of North America, where it sometimes
reaches Lat. 60°. It is most abundant on the shores of Spitz-
bergen, but is not found on the northern shores of Asia between
Long. 80° and 160° E., or on the north shores of America from
100° to 150° west.
Its remains have been found fossil in Europe as far south as
France, and in America as far as Virginia ; but the small frag-
ments discovered may render the identification uncertain.
Family 35.—PHOCID^. (13 Genera, 21 Species.)