LYMNZIDZ OF NORTH AMERICA. 419 
Rance: (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,’ fifteen miles from Portland, Cumberland Co. (Fuller; 
Morse; Putnam). 
Se 7 


BriTisH AMERICA. 
Quesec: Brome Lake, Brome District (Latchford; Taylor; Whiteaves). 
GEOLOGICAL DistTrRIBUTION: Unknown. 
Ecotocy: “Mighelsi is found in the lake feeding on conferve 
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 
1This 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, 
