1940. _Clethrionomys gapperi rufescens_ R. W. Smith, Amer. Midland
Nat., 24:233, July, type from Wolfville, Kings County, Nova Scotia
(_nec Arvicola rufescens_ de Selys Longchamps, 1836, from
Longchamps-sur-Ger, Belgium).
The name _rufescens_, as applied by R. W. Smith (Amer. Midland Nat.,
24:233, July, 1940) to the red-backed mouse of Nova Scotia, seems to be
unavailable under the rules of the International Code of Zoological
Nomenclature, since it is a homonym of _Arvicola rufescens_ de Selys
Longchamps, 1836, which in turn is a synonym of _Clethrionomys
glareolus glareolus_ Schreber, 1780 (Ellerman and Morrison-Scott,
Checklist of Palaearctic and Indian Mammals, 1758 to 1946, p. 663,
November 19, 1951).