MB. E. COLLETT ON MTODES LEMMUS IN NOEWAT. 327 



G. newtonii. G. veriis. 



millims. inillims. 



Least width of OS isehii 2| 11 



Length of femur 26 30 



Width in the middle 11 3 



Width of its lower extremity 5| 7| 



Fig. 6. 



D C E! A 



The femur of Gecko newtonii in four different aspects and of natural dimension. 



On Ml/odes lemmus in Norway. By Egbert Collett, Conservator 

 University Museum, Christiania, O.M.Z.S., &c. (Communi- 

 cated by Dr. J. Murte.) 



[Eead April 5, 1877.] 

 In the previous year's publications of this Society are some articles 

 by Mr. Duppa Crotch on the Norwegian Lemming {Myodes 

 lemmus)^. As the habits and the economy of this mysterious 

 little animal must always have considerable interest for any one 

 who has the opportunity of observing it in the state of nature, I 

 have considered that a few remarks on the same subject, being the 

 result of personal experience, may be deemed worthy of notice, 

 more especially as my personal observations in some respects differ 

 from the statements made by Mr. Crotch. The following notes 

 with some additions and abbreviations may be considered in the 

 light of a partial translation of an article of mine in a memoir on 

 the mammals of Norway, published in Christiania, March 1876t, 

 and are here communicated by the desire of my friend Dr. Murie. 



* 1. " On the Migration and Habits of the Norwegian Lemming," vol. xiii. 

 p. 27 (Sept. 19, 1876). 2. " Additional Note relative to the Norwegian Lem- 

 ming," vol. xiii. p. 83 (Dec. 15, 1876). 3. " Further Remarks on the Lemming," 

 vol. xiii. p. 157 (Feb. 28, 1877). 



t " Bemeerkninger til Norges Pattedyrfauna," p. 18 (Nyt Magazin for Natur- 

 videnskaberne, 22 B., Kristiania, 1876). 



