Translation 2783

202
. Bottle-nosed Dolphin (yursions truncatus montagu, 1821)
' The usual length of this dolphin in tue Black sea . is 255-250
cm (maximum 290-310. cm); correSponding figures for the Atlantic Ocean
are 2/0-230 ers and 350-390 cm.
, >, •
• -
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›
•
Pkte, 62, Atbainnin.
Pig. 62«
Bottle-nosed dolphin.
In external appearance the bottle-nosed dolphin somewhat
reeJembles•the common dolphin; but the body of the former is relatively
stduter, and the beak is moderately developed (it is smaller than in •
the common dolphin; and is separated from tue bulging forehead by a
well-marked groove.
The dorsal fin is tall, and the flippers are
medium-sized and convex on both the front and tile rear edges. The
upper jaw contains . from 20 to 25 pairs of teeth, and. the loWer jaw
from 18 to 22 pairs, totalling up to 90 teeth.
The.colour varies greatly, but the back is usually black or
dark-grey and the ventral side light-celoured; the bQundary between '
them is not always clearly evident.
The bottle-nosed dolphin is a dweller in temperate coastal
waters. lhose that are found.in the Indian Ocean frou .
tua lied Sea
and south Africa to tue Bay of Ben[2:al andAustralia, in the facific
Ocean from the south China sea to Australia and new zealand on the
west and to the American coast, from oalifornia to O aile, oh the east,
and in the Atlantic Ocean from Argentina to Brazil, are classified
as the subspecies T , .
t, aduncus Ehrenber c .;, 182. Ih the Atlantic
waters from 4 0 S to 45 0 n on the American coast and from the coasts
of Africa to Scandinavia, and also in the .F,altic, ...editerranean, and
Blaok Seas, dwells the subspecies Y. t. truneatus vontai;u, 1821. • fhe
• the eastern half of the northern part of tua £acific Ocean
animais in
(it is possible that this applies to the whole of tne'ocean )
sometimes classified as the independent species T. i1fl. Bal l, 1875.
are