48 PEROMYSCUS. 



Subgenus Peromyscus. 



Peromyscus maniculatus argentatus Copeland and Church. 



Peromyscus canadensis argentatus Copel. and Church, Proc. Biol. 

 Soc. Wash., XIX, 1906, p. 122. 



Type locality. Grand Harbor, Grand Manan, New Brunswick. 



Geogr. Distr. Island of Grand Manan, New Brunswick. 



Genl. Char. Similar to P. m. abietorum but larger, color different; 

 pronounced dark patch in front of eye. 



Color. Upperparts slate-gray; dorsal line darker; underparts white, 

 base of hairs plumbeous; dark patch in front of eye; hands and feet 

 white; tail above black, beneath white. Type in United States Na- 

 tional Museum. 



Measurements. Total length, 179.5; tail, 87; hind foot, 21.5; 

 ear, 17.5. Skull: Greatest length, 26.4; basilar length, 20; palatal 

 length, ii ; zygomatic width, 13.7; mastoid breadth, n.i; intertem- 

 poral width, 4; length of nasals, 10.3; length of upper molar series, 3; 

 length of lower molar series, 3.4; length of, mandible, 16.4. Type in 

 the United States National Museum. 



Peromyscus maniculatus eremus Osgood. 



Peromyscus maniculatus eremus Osgood, N. Am. Fauna, No. 28, 

 1909, p. 47. 



Type Locality. Pleasant Bay, Grindstone Island, Magdalen Islands, 

 Quebec. 



Genl. Char. Similar to P. m. abietorum, but darker and with a 

 shorter tail. 



Color. Orbital ring and spot at base of whiskers dusky; upper- 

 parts russet and dusky mixed; underparts cream white; tail bicolor 

 above, beneath white. Ex type in United States National Museum. 



Measurements. Total length, 183; tail, 83; hind foot, 21; ear, 

 15.7. Skull: Occipito-nasal length, 26.1; Hensel, 19.6; zygomatic 

 width, 13.1; intertemporal width, 3.8; length of nasals, 10.7; length 

 of upper molar series, 4.1; length of mandible, 11.5, length of lower 

 molar series, 4. Ex type in United States National Museum. 



Peromyscus maniculatus borealis Mearns. 



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



XXIV, 1911, p. 102. 

 Hesperomys leucopus arcticus Mearns, Bull. Am. Mus. Nat. Hist., 



II, 1890, p. 285 (nee Coues). 

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



