8 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 
observed by the Agassiz party on St. Ignace Island in Nepigon Bay 
late in the summer of 1848, it may be that the bird.breeds on the 
northern shore of Lake Superior. 
Characteristic mammals of the Iludsonian zone in Ontario are: 
Rang ifer caribou, Microtus pennsylvanicus fontigenus , Phena- 
comys latimanus , Peromyscus canadensis umbrinus , and perhaps 
also Arctomys monax melanopus. The absence of deer and moose 
and their replacement by caribou is a feature especially characteris¬ 
tic of the Hudsonian fauna in eastern North America. 
The occurrence of the genus Chionobas at Nepigon is a further 
indication of the high northern affinities of the life of the region, as 
the butterflies of this genus are wholly confined to alpine and arctic 
or subarctic regions. 
o 
List of Mammals. 
Lepus sylvaticus mearnsi Allen. 
A cottontail taken at Toronto is recorded by Mr. Outram Bangs 
in his review of the eastern races of Lepus sylvaticus. 1 
Mr. Brooks writes that the cottontail is common at Guelph and 
that it has recently extended its range north nearly to Mount 
Forest. At Milton it is now common, though its regular occurrence 
dates from about 1888 only. 
t/ 
Lepus ame rig anus Erxleben. 
Abundant everywhere at North Bay, Peninsula Harbor, and 
N epigon. 
Abundant at Mount Forest (Brooks). Tolerably common in 
cedar swamps and pine woods at Milton (Brooks). 
Recorded by Gapper in 1830 from the region between York and 
Lake Simcoe. 
These rabbits are often killed by trains on the Canadian Pacific 
Railroad, and I found several mangled bodies on the track near 
Nepigon. In one, taken on October 5 at Peninsula Harbor, the 
white winter pelage was beginning to appear on the ears and 
buttocks. Others killed about two weeks later had nearlv com- 
pleted the moult. 
1 Proc. Bost. Soc. Nat. Hist., 1894, vol. 26, p. 409. 
