January, _Myodes obensis_ on the 13th February. Both
species were afterwards frequently brought on board by
Chukches, and during the winter lemmings were seen not
unfrequently running on the snow. _Myodes obensis_ appeared
to be more numerous than the other species. It is singular
that all the nine specimen of _Myodes torquatus_ I obtained
during the winter were males. Differing from both these
species, _Arvicola obscurus_ does not appear to show itself
above the snow during winter. Of the latter I got eight
specimens from the village Tjapka, lying between Yinretlen
and Behring's Straits. I afterwards got another from the
village Irgunnuk, situated five English miles east of
Yinretlen.

[Illustration: MARMOTS FROM CHUKCH LAND. ]

"The more uncommon land mammals wintering in these regions
are the _wolf_ and the _wild reindeer_. Footprints of the
latter were seen on the 23nd March, in the mountain region,
fifteen to twenty miles south of Yinretlen. According to
the Chukches' account some few reindeer remain on the hills
along the coast, while the greater number migrate
southwards towards winter. Besides these, two other mammals
live here during winter, though they are only seen during
summer and autumn, because they hibernate the rest of the
time. These are the _land bear_ and the _marmot_ (_Arctomys
sp._). We saw no land bear, but on the 8th October
Lieutenant Hovgaard and I found traces of this animal two
or three English miles from the coast. The Chukches say
that the land bear is not uncommon in summer. The marmot
occurs in large numbers. It was brought on board for the
first time by a Chukch, and the following day I myself saw
it sitting on the top of a little hill, where it had its
dwelling.

"Besides the animals enumerated above the natives talked of
another, which is called by them _nennet_, and is said to
live by the banks of rivers. According to their description
it appears to be the common _otter_. As at most places
where the lemming is common the _weasel_ (_Mustela
vulgaris_, Briss.) is also found here. I got from the
Chukches two skins of this animal. Whether the beaver
occurs in the part of Chukch Land which we visited I cannot
say with certainty. It is probable, because the Chukches
informed me that there was found here a weasel which has