Bottie-nosed Dolphin 
a tooth on each side of the lower jaw at about the middle, 
female toothless. Skin very smooth and polished, uniform 
black all over with occasional lighter blotches. 
Range. North Atlantic, apparently a deep-water species. 
DOLPHINS AND PORPOISES 
Family Delphinide 
The smaller cetaceans, popularly known as dolphins and por- 
poises, compose this family. Properly speaking, the name dolphin 
belongs to those species which have a projecting snout, while 
porpoise refers to those with uniformly rounded head. With 
their usual perversity, however, our earliest settlers christened the 
commonest of these animals on our Atlantic Coast the ‘‘ porpoise,” 
while in reality it is a true dolphin, the same as the ‘‘ bottle- 
nose” of the coasts of Europe. 
Both dolphins and porpoises have a well-developed fin on the 
back and with one exception {the Grampus) have a large number 
of sharp teeth in both jaws. 
The other members of the family, the white whale and the 
narwhal are found only in the Arctic regions and are peculiar in 
many ways. Both lack the dorsal fin and the narwhal is devoid 
of teeth except for the single long protruding tusk. 
Bottle-nosed Dolphin 
Turstops tursto (Fabricius) 
Called also Porpotse on our Atlantic Coast. 
Length. 9 feet. 
Description. Stout, forehead sloping, beak short and depressed, 
back fin about midway between the nose and the tip of the 
tail. Colour plumbeous gray above, lighter on the sides, 
shading gradually into pure white on the under surface. Teeth 
22 in each jaw. 
Range. North Atlantic coasts from Maine to Florida and through 
the Gulf to Texas, also coasts of Europe. 
This is the most familiar cetacean of our Atlantic seaboard, 
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