PEROMYSCUS. 49 



Cont. and W. Indies, F. C. M. Pub., VI, 1905, p. 146, No. 

 , 287 d., Zool. Ser. 



Peromyscus maniculatus arcticus Osgood, N. Am. Fauna, No. 19, 

 .1900, p. 33. 



Peromyscus maniculatus nebrascensis (Coues). 



Hesperomys sonoriensis var. nebrascensis Baird, Mamm. N. Amer., 



1857, p. 462 (nomen nudum). 

 Hesperomys sonoriensis var. nebrascensis Coues, N. Am. Rodent., 



1877, p. 79, (Specimens ex Deer Creek, Nebraska). 

 Peromyscus luteus Osgood, Proc. Biol. Soc. Wash., XVIII, 1905, 



p. 77 (ex Kennedy, Nebraska). 

 Peromyscus maniculatus nebrascensis Mearns, Proc. Biol. Soc. Wash., 



XXIV, 1911, p. 102; Osgood, N. Am. Fauna, No. 28, 1909, p. 77. 

 Type locality. Deer Creek, Nebraska. 



Peromyscus maniculatus osgoodi Mearns. 



Peromyscus maniculatus osgoodi Mearns, Proc. Biol. Soc. Wash., 



XXIV, 1911, p. 102. 

 Hesperomys leucopus nebrascensis Mearns, Bull. Am. Mus. Nat. 



Hist., II, 1890, p. 285. 

 Peromyscus texensis nebrascensis Elliot, Check-List Mamm. N. Am. 



Cont. and W. Indies, VI, 1905, p. 146, Zool. Ser. 

 Peromyscus maniculatus nebrascensis Osgood, N. Am. Fauna, No. 



28, 1909, p. 75. 



Type locality. Calf Creek, Custer County, Nebraska. 

 Dr. Mearns (/. c.) has, in his paper, called attention to the fact 

 that of the names of the above three species, the first two were pre- 

 occupied, viz. arcticus Mearns 1910 nee arcticus Saussure of Coues, 

 1877, and as this name is a synonym of Hesperomys maniculatus Wag- 

 ler, arcticus cannot be employed in the nomenclature of this genus, 

 and may not be used for the race from Fort Simpson, Mackenzie, 

 Canada, and for which he proposed the name borealis. The synonymy 

 of these three forms would therefore stand as given above. 



Peromyscus maniculatus hylaeus Osgood. 



Peromyscus hylczus Osgood, Proc. Biol. Soc. Wash., XXI, 1908, 

 p. 141. 



Type locality. Hollis, Kasaan Bay, Prince of Wales Island, 

 Alaska. 



Geogr. Distr. Islands and coast of southeastern Alaska, including 

 Prince of Wales, Kupreanof, Mitkof, and Admiralty Islands, and on 

 the mainland from Lynn Canal to Frederick Sound. 



