Translation 2783

•
207.
•beir spread being one-third of the -body length. io upper and lower
jaws each have from ten to thirteen pairs of 1itase4ve, solidly-set
teeth with largo . roots. The jaws are provided wi .Li powerful muscles.
: Who body colour is variable. the dorsal side is-black or
grey-black, and the ventral side - including trie lower ja • , throat,
-and chin) is white. The white area narrows from in front to tile base
of. the flippers, and then at tiie level of the dorual fin it widens
again, covering a large part of the caudal section: In that part of
the white area a narrow black stripe ruer; from tae up,?er part of the
body. Where is usually a white patch near the eye, and a white stripe,
running downward and forward alons the side, is located behind the
doral fin.
Where are 50-52 vertebrae, and 11 or 12 pairs of ribs.
The killer whale is. counopelitan, being found from the Arctic -
to,tkAntarctic in both coastal' and pelaec waters. It avoids only
.areas with severe ice conditions.
In waters adjacent to the USSR killer,whales are found in the
White and Barents Seau, but'there are none in top Laptev, 2,ast Siberian,
and Black Seas. They • have been known to enter the Baltic Sea.
In the Par East they are found in the Sea of Jaoan, tue ;.3ea of Okhotsk,
the Bering Sea, and the southern part of the Chukchi bee-
- Genus LissodelphiP Gloger, 1811 (Right-whale Dolphins)
A characteristic of this genus of dolphins is their lack of
a doral fin, The body is spindle-shaped ana much elongated. The
head is small, and the fatty cushion or forehead is not very prominent;
the beak is narrow and of medium length, Each jaw contains' from 42
to 47 Pairs of small teeth, 3 mm in diameter.
P'
C .
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f) Cerols ro,11,1111 tri 2te.u.,(1,11}t.
2i.c. 66. Nortnern ric;h1;-whale il0lihi .
..■■■ -
*his conlains two species, iuentifii.yd ly tnoir colouring.
, bu ::"ocie;) in Lae"nortnorn of iacifjc Oc on
Lissoderilnis boresilis ,onlo, 1t8 -- is 14 to terce metres