32 



some of the new forms differing radically in coloration 

 from those earlier known. x 



Mr. True has recently described a new genus Myctomys 2 

 from Fort Chimo, Ungava, Labrador, which appears to 

 combine somewhat the characters of the genera PJienacomys 

 and Synapatomys. 



The Lemming Mouse, forming the still monotypic genus 

 Synaptomys, has had its known range remarkably ex- 

 tended, and furnishes a cogent commentary upon our lack 

 of knowledge of the mammalian fauna of even the long- 

 settled parts of the United States. A few years since this 

 species (S. cooperi) was positively known only from south- 

 ern Illinois, Indiana and Ohio, east of the Mississippi 

 River, though the type of the species was reputed to have 

 come from either New York or New England, or possibly 

 from New Jersey. Recently Dr. Merriam reported its oc- 

 currence in Maryland, in Virginia, in the mountains of 

 North Carolina, and at Alfred Centre, N. Y. 3 It has since 



1 The following have been recorded : 



Evotomys rutilus (Pallas). " Circumpolar regions." 



Evotomys gapperi (Vigors). Northern border of eastern United States. 



Evotomys gapperi oc/iraeezis Miller, Proc. Boston Soc. Nat. Hist., XXVI., p. 

 193, March 24, 1894. White Mts., N. H. 



Evotomys gapperi rhoadsi Stone, Am. Nat., Jan., 1893, p. 55. May's 

 Landing, N. J. 



Evotomys gapperi brevicaudus Merriam, No. 5, p. 66, July, 1S91. Black 

 Hills, South Dakota. 



Evotomys carolinensis Merriam, Am. Journ. Sci., XXXVI,, Dec, 1888, p. 

 460. Mountains of North Carolina. 



Evotomys dawsoni Merriam, Am. Nat., July, 1889, p. 649. Finlayson 

 River, N. W. T. 



Evotomys galei Merriam, N. Am. Fauna, No. 4, p. 23, Oct., 1890. Boulder 

 County, Colorado. 



Evotomys occidentalis Merriam, ibid., p. 26. Chehalis Co., Washington. 



Evotomys californicus Merriam, ibid., p. 26. Humboldt Co., California. 



Evotomys idahoensis Merriam, ibid., No. 5, p. 66, July, 1891. Salmon 

 River Mountains, Idaho. 



Evotomys fuscodorsalis Allen, Bull. Am. Mus. Nat. Hist., VI. , p. 103, 

 April, 1894. New Brunswick. 



2 Proc. U. S. Nat. Mus., XVII. , p. 2 (of advance sheet), April 26, 1894, 

 Type M. innuitus, sp. nov. 



3 Merriam, Proc. Biol. Soc. Wash., Vll, pp. 175-177, Dec, 1892. 



