FIELD BOOK OF MAMMALS 



Mountain Long-tailed WeaseL — Mustela longicauda oribasus 

 (Bangs). 

 Darker than typical longicauda but equal to it in size. 

 Upperparts dark brown, without any tinge of reddish, 

 darker about head; underparts buffy yellow; white on upper 

 lip and chin and on tops of feet. Total length, females, 15.6 

 inches; tail vertebrae, 6 inches; hind foot, 1.8 inches. Found 

 in the region about the head of Kettle River, British Columbia. 



Minnesota WeaseL — Mustela longicauda spadix (Bangs). 

 Resembling typical longicauda but darker, upperparts 

 chocolate-brown. Total length, males, 18.2 inches, females, 



14 inches; tail vertebrae, males, 6.6 inches, females, 5.3 

 inches; hind foot, males, 2.2 inches, females, 1.7 inches. 

 Found in "Edge of timber belt in Minnesota, along boundary 

 between Transition and Boreal Zones." (Merriam) 



Missouri WeaseL — Mustela primulina Jackson. 



A bright- colored member of the longicauda group. Darker 

 above than longicauda, underparts yellow, not buif . Upper- 

 parts Brussels brown; tail black- tipped ; chin white. Total 

 length, females, 13 inches; tail vertebrae, 5 inches; hind foot, 

 1.8 inches. Taken at Avilla, Jasper County, Missouri. 



Cascade Mountain WeaseL — Mustela saturata (Merriam). 

 Large, long-tailed, dark. Upperparts dark, raw umber- brown, 

 darker on top of head; brown spot at comer of mouth; 

 chin white ; underparts yellow to orange. Total length , males, 

 17 inches; tail vertebrae, 6.6 inches; hind foot, 1.9 inches. 

 Found in "Cascade and Siskiyou Mountains of Oregon and 

 Washington, northward into British Columbia. " (Miller) 



Mountain WeaseL — Mustela arizonensis (Mearns). 



Resembling longicauda in color and markings, but smaller. 

 Upperparts raw umber-brown, darker on head; underparts 

 yellow to orange, except for white chin and upper lip. 

 Total length, males, 15.4 inches, females, 14 inches; tail 

 vertebrae, males, 5.8 inches, females, 5.2 inches; hind foot, 

 males, 1.8 inches, females, 1.6 inches. Found in "Broadly, 

 the Sierra Nevada and Rocky Mountain systems, reaching 

 British Columbia in the Rock>^ Mountain region, but not 

 known north of the Siskiyou Mountains in the Sierra- 

 Cascade system." (Merriam) 



Black Hills WeaseL — Mustela alleni (Merriam). 



Resembling arizonensis but more yellow on upperparts, 

 which are golden to yellowish brown. Total length, males, 



15 inches; tail vertebrae, 5.5 inches; hind foot, 1.8 inches. 

 Found in the "Black Hills, South Dakota." (Merriam) 



California WeaseL — Mustela xafithogenys xanthogenys Gray. 

 "Size medium; tail long; face conspicuously marked with 

 whitish, but rest of head not black; underparts ochraceous. 

 Upperparts from back of head to terminal part of tail in 

 summer pelage raw umber-brown, tinged with golden; in 

 winter pelage, drab brown, without yellowish suffusion; 

 head always darker, becoming dusky over nose; a large 



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