68 Proceedings of the Biohgicdl Society of Washington. 



bordered with black and tipped with warm buff; tail beneath, ochraceous 

 buff mixed with gray; under parts white. Summer pelage: Upper parts 

 clay color or ochraceous tawny; lightly mixed with black; front legs 

 and feet ochraceous tawny; hind feet ochraceous buff; tail above, 

 tawny, bordered with black and tipped with ochraceous buff; under 

 parts white. 



Measurements. — Average of 9 adults (7 males, 2 females) from type 

 locality: Total length, 325 (314-344); tail vertebrae, 130.8 (119-141); 

 hind foot, 50.2 (48-52). Skull: Average of 8 adults (7 males, 1 female) 

 from same locality: Greatest length, 47.1 (46-48.3); zygomatic breadth, 

 26.6 (25.5-27.5); cranial breadth, 20.3 (19.9-21.1); interorbital breadth, 

 14.1 (13.3-14.7); least postorbital breadth, 14.4 (13.7-15.7); length of 

 nasals, 14 (13-15.6); maxillary tooth row, 8 (7.5— .4). 



Remarks. — In color, this race most resembles loquax, but it is distinctly 

 paler and also larger. It is an intermediate form, connecting loquax 

 with pallescens of the Souris River region. 



Specimens examined. — Total number, 61, from localities as follows: 

 Manitoba: Aweme, 17 ',^; Carberry, 3; Red River, 2. 

 Minnesota: Moorhead, 12 ^. 

 North Dakota: Grafton, 12; Grand Forks, 3; Larimore, 1; Lisbon, 1; 



Manvel, 1; Portland, 3; Wahpeteon, 3; Walhalla, 3. 



United States Department of the Interior, Fish and Wildlife Service, 

 Washington, D. C. 



' Stuart Griddle collection. 

 • Royal Ontario Mus. Zool. 

 < Nine in collection Carnegie Mus. 



