OF NORTH AMERICA. 



419 



RANGE: (Figure 47). Maine and Southeastern Canada. So far 

 as the writer has been able to determine, from an examination of 

 specimens, this race is confined to the Nova Scotian and the eastern 

 part of the Canadian regions and to the Boreal (Canadian) life zone. 



RECORDS. 

 UNITED STATES. 



MAINE: Cross Lake, Eagle Lake, Portage Lake, Square Lake Inlet, 

 Aroostook Co. (Cumings; Nylander) ; Second Eagle Lake (Longfellow; Mi- 

 ghels) ; Seabass Lake, 1 fifteen .miles from Portland, Cumberland Co. (Fuller; 

 Morse; Putnam). 



Distribution of 

 MIGHEL8I 



FIG. 47. 



BRITISH AMERICA. 



QUEBEC: Brome Lake, Brome District (Latchford; Taylor; Whiteaves). 



GEOLOGICAL DISTRIBUTION: Unknown. 



ECOLOGY: "Mighelsi is found in the lake feeding on confervse 

 growing on the rocks. The majority of the young shells are somewhat 

 elongated, while the old, senile forms are very broad. These old shells 

 are probably very sluggish in habit and when once located on a large 

 rock, find food plentiful and accordingly remain in this location all 

 summer. The current in the lakes is not strong enough to dislodge 



is evidently a typographical error for Sebago Lake. The record 

 has not been verified by the examination of specimens and it is not definitely 

 known whether this is the true mighelsi or a convex form of emarginata. 



