Translation 2783

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10
The head is massive, with a blunt muzzle that bears smoath
vibriasae arranged in more than twelve rows, - The upper jaw contains
large downward-pointing canines, nossessed by both males and females.
There is no external ear pinna. There are 18 teeth.
The tail is a scarcely-noticeable cutaneous projection. The
lie under a layer of.skin and fat, there being no scrotum.
ihe female has two pairs of mammae.
There are warty,outgrowths on
testes
the neck, shoulders, and breast of adult males. The hair covering .
is sparse and predominantly rust-coloured. A peculiarity of internal
structure is a pair of sac-like evaginations in the pharyngeal region,
observed only in adult males.
The walrus is a typical dweller in the seas of tne North At-.
lantic, Pacific, and Arctic Oceans, i.e. of Arctic regions. The •
animals are bioloi,;ically assoaiated with ice-floe s .
and coastal resting-places.
DecauSe of serious diminution of walrus stocks in all
areas of their range, their economic value is restricted to fulfilment
of the needs of local native populations in the Arctic.
Pinnipedia.
The genus contains only one species.
TRUE OR EARLIAsS SEALS -- PHOCIDAA
The family Phocidae contains most of the suécies in the order
The range of body lengths is wide, from 120 to 650 cm.
In the great majority of seals there is little difference in body
. .
size between males and females. The most characteristic external .
features are: the rear flippers are extended behind the body, do not
articulate at the tarsal joint, and are hot usable for movement on .
a firn substrate; there is no external ear at all. The head is compressed
in front; the upper lip bears from six to ten rows of vib-
rissee with wavy ekes.
• , . •
The front and rear flippers are completely covered with fur
and have no cartilaginous fringe. The claws are well 'develope d .
are located at the edge of tac flippers. ale front flippers are '
shorter titan the rear ones.
and
The rear flippers arc capable of con7.
.siderable fan-like exuansion; the outer digits girst and • fifth) , of
the flippers are the most developed.
are covered with a layer of skin and fat.
The tail is short; te testes
The colourin,:; is extremely
varied, but the basic colour or most'seals is arey,' with vnrious