Some Forms o/Miis musculus, Linn. 165 



dwarfed race of Lagoa Santa, Brazil, that is even beginning 

 to lose the hinder molar (mentioned by me in ' Gnaver fra 

 Lagoa Santa/ 1887, p. 60, E Museo Lundii, vol. i.). Evidently 

 the Fseroe mouse is adapted as a rock-climber. On the 

 whole, Mus musculus seems to have a predilection for bird- 

 islands (cf. Ogilvie Grant's observations on the Salvage 

 Islands, 'The Ibis,' 1896, pp. 43, 52, &c.). I have not as 

 yet got any information from my correspondents regarding 

 the food of the mice in the bird-rocks of Myggeues; probably 

 they are feeding upon eggs and refuse from the bird-colonies. 

 At all events the mice are said to be abundant in the bird 

 cliffs. I do not remember to have seen anything about the 

 history of the introduction of Mus musculus into the Faeroes; 

 but evidently it has arrived there with the colonists of the 

 country, just as Mus sylvaticus into Iceland. That even 

 Mus sylvaticus may be carried about by men, in barrels with 

 corn, in waggons with peat, I have observed myself here in 

 Denmark." 



I think there can be little doubt that the mice from the 

 somewhat remote island of Myggenes, described by Herr 

 Winge, are identical with those from Naalsoe. So far as 

 one can judge without actual comparison, they seem to 

 agree in all their essential characters, namely, robustness and 

 colour, and also in the remarkable coarseness of their feet — 

 a modification, however, which has been probably brought 

 about by the rough nature of their haunts. 



It is interesting to remember that Landt tells us that at 

 the close of the eighteenth century there were no mice in 

 Myggenes. 



Colonel H. W. Feilden, C.B., who visited the Fseroes in 

 1872, tells me that the late Herr Mtiller, of Thorshavn, said 

 something to him about the islanders thinking there was a 

 second species of mouse in some of the islands, and that he 

 (Mtiller) had examined specimens, but could not differentiate 

 them from Mus musculus. 



Finally, in connection with the insular peculiarities found 

 in the Fseroese mice, it is interesting to recall the fact that 

 the Starling of the Faeroes and the Wren of Faeroe and Ice- 

 land also possess peculiarities, and have been described as 



