RODENTIA: CRICETIDAE 563 



1896. Synaptomys helaletes gossii Merriam, Proc. Biol. Soc. Washington, 

 vol. 10, p. 60, Mar. 19, 1896. 



1897. Synaptomys cooperi gossi Rhoads, Proc. Acad. Nat. Sci. Philadelphia, 

 vol. 49, p. 307, June 1897. 



Type Locality. — Neosho Falls, Woodson County, Kans. Range. — Eastern 

 Kansas from Stafford and Woodson Counties (Cockrum, Univ. Kansas Publ. 

 Mus. Nat. Hist., vol. 7, No. 1, p. 196, Aug. 25, 1952) northward into southeastern 

 Nebraska, and central (Marion County) and southeastern (Henry County) 

 Iowa (Hall and Cockrum, Univ. Kansas Publ. Mus. Nat. Hist., vol. 5, No. 23, 

 p. 297, Nov. 17, 1952) ; west at least to Lancaster County, Nebr. (Fichter 

 and Hansen, Bull. Univ. Nebraska State Mus., vol. 3, No. 2, pp. 1-9, September 

 1947) , and east to Linn and Muscatine Counties, Iowa (Scott, Iowa State College 

 Journ. Sci., vol. 12, No. 1, p. 77, October 1937) . 



Synaptomys cooperi paludis Hibbard and Rinker 



1942. Synaptomys cooperi paludis Hibbard and Rinker, Univ. Kansas Sci. 

 Bull., vol. 28, pt. 1, No. 2, p. 26, May 15, 1942. 



Type Locality. — Bog area surrounding brooder pond No. 1, Meade County 

 State Park, 14 miles southwest of Meade, Meade County, Kan. Range. — Known 

 only from bog areas of Meade County State Park 



Subgenus MICTOMYS True 



1894. Mictomys True, Diagnoses of new North American mammals, p. 2, 

 Apr. 26, 1894. (Preprint of Proc. U. S. Nat. Mus., vol. 17, p. 242, Nov. 15, 

 1894.) (Type, Mictomys innuitus True.) 



Synaptomys borealis borealis (Richardson) * 



1828. Arvicola borealis Richardson, Zool. Journ., vol. 3, p. 517. 



1902. Synaptomys (Mictomys) bullatus Preblef , Proc. Biol. Soc. Washington, 

 vol. 15, p. 181, Aug. 6, 1902. (Trout Rock, near Fort Rae, Great Slave Lake, 

 Mackenzie District, Northwest Territories, Canada.) 



1907. Synaptomys borealis Osgood, Proc. Biol. Soc. Washington, vol. 20, 

 p. 49, Apr. 18, 1907. 



Type Locality. — Fort Franklin, Great Bear Lake, Mackenzie District, North- 

 west Territories, Canada. Range. — Athabaska-Mackenzie region of Canada 

 from west end of Great Bear Lake south to Peace River block in northeastern 

 British Columbia and Edmonton District in central Alberta; recorded also from 

 Brightsand Lake about 65 miles north-northwest of North Battleford, Saskatche- 

 wan (Anderson, Nat. Mus. Canada, Bull. 102 (1946), p. 144, Jan. 24, 1947). 



Synaptomys borealis dalli Merriamf* 



1896. Synaptomys (Mictomys) dalli Merriam, Proc. Biol. Soc. Washington, 

 vol. 10, p. 62, Mar. 19, 1896. 



1903. Synaptomys (Mictomys) andersoni J. A. Allen, Bull. Amer. Mus. 

 Nat. Hist., vol. 19, p. 554, Oct. 10, 1903. (Level Mountains, northern 

 British Columbia, Canada.) 



1927. Synaptomys borealis dalli A. B. Howell, North Amer. Fauna No. 50 



(June 30) p. 24, Aug. 5, 1927. 

 Type Locality. — Nulato, Yukon River, Alaska. Range. — Hudsonian Zone 

 in central and southern Alaska, southwestern Yukon, and northwestern British 



