398 BULLETIN OF THE 



V. Canadian Fauna. The next fauna to the northward of the 

 Alleghanian is the Canadian. The southern boundary of the Canadian 

 is hence, of course, the northern limit of the Alleghanian, which bound- 

 ary has been already defined. Its northern limit coincides very nearly 

 with the isotheral line of 57° F. The region to the northward of the 

 Alleghanian Fauna is unfortunately too little known to permit of a 

 very satisfactory determination of the northern boundary of either the 

 Canadian Fauna or of the faunas to the northward of the Canadian. 

 On the Atlantic coast the Canadian Fauna appears to embrace the 

 greater part of Newfoundland, nearly or quite all of Nova Scotia* and 

 New Brunswick, Northern New England, including the crests of the 

 Green Mountain ranges southward to Connecticut, the greater part of 

 the province of Quebec, including the Lower St. Lawrence valley as 

 far up as the city of Quebec, the southern slope of the Height of Land 

 in Northern Ontario, and the highlands on both sides of Lake Superior. 

 To the southward it also embraces as outlying islands the Adirondacks 

 of Northern New York, and the higher crests of the Appalachians 

 southward to Georgia. To the northward it probably extends nearly 

 to the summit of the Height of Land, and may embrace part of the low- 

 lands bordering the southwestern shore of Hudson's Bay. Its northern 

 boundary hence sweeps northwestward in the interior nearly or quite 

 to Fort Resolution, on the southern shore of Great Bear Lake. 



The Canadian Fauna, as above limited, may be characterized as fol- 

 lows. It is distinguished from the Alleghanian Fauna by the absence 

 of the species mentioned above as limited in their northward range by 

 that fauna, and by the presence in the breeding season of those men- 

 tioned in the first subjoined list ; from the Hudsonian Fauna by the 

 presence of those given in the second subjoined list, and by the absence 

 of those given in the first list under the Hudsonian Fauna. * It is 

 further distinguished by its forming the breeding haunts of a large pro- 

 portion of the Sylvicolidce, especially of the species of Dendrceca, 

 several of which are in summer mainly restricted to it. 



* Nova Scotia, zoologically considered, presents somewhat anomalous characters. 

 In summer a number of birds which are reported as either rare or accidental at Calais, 

 Me., are represented as common summer residents in Nova Scotia, while other northern 

 species breed there in numbers which do not usually breed at localities where the other 

 species referred to are summer residents. The half-insular position of Nova Scotia is 

 doubtless the explanation of the faunal peculiarities above mentioned. 



