12 FRCORDETT: 
and the migrations, partly from his own observations in North- 
ern Russia. But he has also extracted all that appeared to 
him to be of interest, from the considerable amount of literary 
matter concerning this animal, of which he has with great care 
compared ninety-five different articles (up to and including the 
year 1882)1. | 
2. Names. 
The Norwegian name for Myodus lemmus is, at present, 
generally Lemæn. The designation has changed with the times, 
and is as yet by no means the same in all the distriets of the 
country. 
As previously mentioned, the first name one meets with 
is Lomundr (18th Century). Subsequently Leem or Lemmer 
(Ziegler 1532) was employed; besides Lemmar or Lemmus (Olaus 
Magnus 1555); Lemmen (Kruger 1579); Lömmer or Lemminger 
(Peder Claussön 1599); Lemmer (Scaliger 1607); Leming, Lem- 
inger, Lemender, Lommer or Lomhunde (0. Wormius 1653), &e. &c. 
In his Norwegian Dictionary, Ivar Aasen” gives the follow- 
ing names to this animal, as employed in the various distriets: 
1 In respect to Norway, this species has, of late years, been treated 
of by the author in Nyt Magazin for Naturvidenskaberne (Christiania) 
22 B. p. 70 (1877), and 27 B. p. 224 (1882); also by Mr. Duppa Crotch, 
and the author, in Journ. of the Linnean Soc. 1878 (Vol. XIII, p. 
27, p. 83, p. 157 and p. 327), and by Mr. T. T. Somerville in Proc. Zool. 
Soc. Lond. 1891, p. 635. 
Finally, in 1891 (Nature, Vol. 45), Mr. Duppa Crotch has published 
a few remarks in reply to various writers in the same volume 
(Howard Collins, Professor Romanes, Matthieu Williams), concer- 
ning an explanation, previously advanced by him, of the migrations 
of these animals, ("the Atlantis Theory,” for which see his article 
in Journ. Linn. Soc. Vol. XIII, p. 27, 1878). 
? Ivar Aasen, *Norsk Ordbog med dansk Forklaring.” (Christiania 
1873). 

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