82 



NORTH AMERICAN FAUNA. 



[No. 37. 



its range shows comparatively little variation. Althongli markedly 

 smaller than rufescens it intergrades with that form wherever their 

 ranges meet, intermediate examples having been examined from 

 Tower and Two Harbors, Minn., and Lake of Bays, Ontario. Inter- 

 gradation with ignava seems highly probable, though not shown by 

 the material in hand. Murray Bay specimens have very much smaller 

 skulls than typical ignava from the Labrador coast, and no specimens 

 have been examined from the intervening region. Two specimens 

 from Nova Scotia show slight approach to ignava, the skins being 

 the same color except that the bases of the hairs on the back are 

 browner. The skull of one of these specimens is typical of canadensis, 

 the other is a little larger, with somewhat broader nasals and a well- 

 marked sagittal crest. 



A specimen from Porcupine Mountains, Mich., resembles cana- 

 densis m general coloration, but is extensively mixed with black 

 both above and below. Its skull is slightly longer than skuUs of 

 typical specimens from Quebec. A specimen from Mount Mansfield, 

 Vt,, and one from Columbia Falls, Me., (both without skulls), are pro- 

 visionally referred to canadensis, the former agreeing in color with 

 the typical form, the latter with the dark Nova Scotia form. Speci- 

 mens from southern Mackenzie and northern Alberta are practically 

 identical in coloration with the Quebec series, but their skulls average 

 longer and narrower, thus showing approach to ocliracea. A single 

 young specimen in very worn pelage from near the head of Finlay 

 River, British Columbia, seems referable to canadensis, but more ma- 

 terial from that region may necessitate its reference to ocliracea. 

 Woodohucks of this group are reported by Edward A. Preble as 

 occurring at Fort Grahame, on Finlay Eiver, and at Hudson's Hope. 



Specimens exawAned. — Total number, 45, as follows: 



Alberta: Athabaska Eiver (near Fort McMurray), 1; McLeod Eiver, 1; Peace 



River Landing, 2;^ Red Deer, 1;^ South Edmonton, 1. 

 British. Columbia: Finlay River (near head), 1. 

 Mackenzie: Fort Liard, 1; Fort Simpson, 6; Little Buffalo River, 1. 

 Maine: Columbia Falls, 1. 



Manitoba: Oxford House, 1; Trout Lake, 4; York Factory, 1. 



Michigan: Porcupine Mountains, 1;^ Whitefish Point, Chippewa County, 1.^ 



Minnesota: Aitkin, 1;^ Tower, 1; Two Harbors, 1. 



Kew Brunswick: Arthurette, 2;* Scotch Lake, 1. 



IQ'ortli Dakota: Pembina, 1. 



Nova Scotia: Newport, 2.* 



Ontario: Devils Portage, Mattagami River, 1;^ James Bay, 1; Moose River 



(near Hudson Bay) 2.^ 

 Quebec: Murray Bay, 7.^ 

 "Vermont: Mount Mansfield, 1. 

 "Wisconsin: Conover, 1.^ 



1 Collection Victoria Mem. Mus. 



2 Collection Field Mus. Nat. Hist. 



3 Collection Univ. of Michigan. 



< Collection Amer. Mus. Nat. Hist. 

 6 Collection Carnegie Mus. 



