210 
GEOGRAPHICAL ZOOLOGY, 
[part IV. 
extinct whales and dolphins having been described, most of them 
belonging to extinct genera. 
The Zeuglodontidte, an extinct family of carnivorous whales, 
with double-fanged serrated molar teeth, whose affinities are 
somewhat doubtful, are found in the older Pliocene of Europe, 
and in the Miocene and Eocene of the Eastern United States. 
Zeuglodon abounds in the United States, and one species reached 
a length of seventy feet, A species of this genus is said to have 
been found in Malta. Squalodon occurs in Europe and North 
America ; and in the latter country four or five other genera have 
been described, of which one, Sauwcetes, has been found also at 
Buenos Ayres. 
Order Vl—SIRENIA. 
Family 42. — MANATIDiE. (3 Genera, 5 Species ?) 
General Distribution. 
Neotropical 
SUB-REGIONS. 
NE ARCTIC 
Sub-regions. 
Pal^arctic 
SUB-KEGIONS, 
Ethiopian 
Sob- regions. 
Oriental 
Sub-regions. 
Australian 
Sub-regions* 
! 
(O 
! 
* 
— 
1 - 3 
| 1.2 
1 . 3-4 
1 
The Sea-cows are herbivorous aquatic animals living on the 
coasts or in the great rivers of several parts of the globe. Ma- 
natus (2 species) inhabits both shores of the Atlantic, one 
species ranging from the Gulf of Mexico to North Brazil, and 
ascending the Amazon far into the interior of the continent ; 
while the other is found on the west coast of Africa. Halicore (2 
species ?), the Dugong, is peculiar to the Indian Ocean, extending 
from Mozambique to the Bed Sea, thence to Western India and 
Ceylon, the Malay Archipelago and the north coast of Australia. 
Mytina (1 species), supposed to be now extinct, inhabited re- 
cently the North Pacific, between Kamschatka and Behring’s 
Straits. 
Fossil Sirenia. — Extinct species of Manatus have been found 
in the Post-pliocene deposits of Eastern North America from 
