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Show 350 MR. R. BROWN ON THE MAMMALS OF GREENLAND. [May t they saw nothing of it, and it may be safely said not to be an inhabitant of the west coast, either within or outside of the uanisn possessions. , f From Upernavik southward, the Danes have been on the coast, either settled or trading, for at least 120 years, and during that time not a few collectors have visited the country ; but, notwithstanding all their exertions and those of the stationary officers of the government there, no specimen of this Mouse has as yet been obtained, nor do the Eskimo know of the existence of such. Murray has therefore taken too wide a generalization, when he portrays, on map Ixxxv. of his laborious and generally accurate work the 'Geographical Distribution of Mammals' (1866), p. 267, the distribution of the Lemming as extending right along the east and western shores of Greenland to the head of Baffin's Bay, on the supposition that it is a regular member of the Greenland fauna. I am inclined to look upon it as representing the extreme eastern limit of the Myodes torquatus, as the Myodes hudsonius is a climatic species representing the extreme western range of the former species. It is almost unnecessary to note, after what I have said, that Fabricius makes no mention of it in his ' Fauna Grcenlandica ;' and if it had been found, he, ever anxious as he was to add anything to the Greenland Mammals, would have been sure to have heard of it from the natives, credence in whose mythical zoology forms one of the few disfigurations of his work. Neither did Ingeifield, Sutherland, Kane, or Hayes see anything of it in Smith's Sound, or southward to the northern limits of the Danish possessions. In 1861, the natives at Pond's Bay, on the western shore of Davis's Strait, brought m e many skins of this species, which I ascertained to belong to the hudsonius form. For the sake of reference, the Arctic species may be classed as follows:- MYODES TORQUATUS, Pall. Var. hudsonius, Forst. Var. gronlandicus, Tr. 6. [Mus DECUMANUS, Pall. (1778). Mus norvegicus, Erxleben (1776). Grcenl. Teriak. The brown Rat was introduced as far back as the days of Fabricius by the Danish ships in the summer, and seemed likely to prove dangerous in houses ; but they gradually and periodically died out, as they could not stand the cold of the winter. Some years a°-o thev were again introduced, and still occasionally one is seen in the summer months in some of the warehouses from Upernavik to near Cape Farewell.] 7. [Mus MUSCULUS, Linn. Grcenl. Teriangoak (" the small Rat " ) . Its history as a colonist animal in Greenland is about the same as |