ORTIIOPTERA OF NOVA SCOTIA. — PIERS. 225 



Pictou, Colchester, Cumberland, Hants, Kings, Annapolis, 

 Digby, and Yarmouth, with various subsidiary offshoots or 

 tongues, such doubtless as the valleys of the Shubenacadie, 

 Stewiacke, and Musquodoboit Rivers, etc., and probably 

 the district about the headwaters of rivers like the LaHave. 

 Generally it embraces the counties on Northumberland Strait 

 and the Bay of Fundy, with outlying areas in sheltered inland 

 districts. This region is probably most typical from Truro, 

 through the Annapolis Valley, to Yarmouth. Outliers of 

 the Canadian Zone will no doubt be found in some elevated 

 districts in this AUeghanian region. A detailed delineation 

 of the life zones of this province is greatly needed, and most 

 certainly should be prepared through the cooperation of 

 our local biologists. 



Thus we find in the western parts of the province a 

 number of species which are rare or wanting on the Atlantic 

 side and which are more southern in range. It is in this 

 western area that we are more likely to find species of Orthop- 

 tera which have not yet been reported from the province; 

 species which form the last northern outposts of some of the 

 New England forms. As Maine embraces similar life zones 

 to those of Nova Scotia, it is the common species in that 

 state which are most likely to be found extending into Nova 

 Scotia until they arrive at the northernmost limit of their 

 distribution. These considerations explain to a large extent 

 the variation in the relative abundance of certain species 

 in the eastern and western sections of our province, to which 

 reference will be made later. The passing out of species 

 of more southern range, and the lack of any augmentation from 

 species of more northern distribution, have made our orthop- 

 teran fauna a very scanty one when compared with that of 

 regions to the south of us. (See further remarks under 

 the heading "Number of species in Nova Scotia", page 233.) 



The distribution of Nova Scotian Orthoptera according 

 to life-zones may be very roughly and quite tentatively set 

 down as follows, although sufficient is not yet definitely 



