THE NAUTILUS. 141 



Physa ancillaria Say. Common at Square Lake inlet ; dredged in 

 Second Eagle Lake and Portage Lake on Fish River. A single 

 specimen was seen at Mt. Wissic, in Temiscouata Lake. 



Physa sayii Tappan. A large colony exists in the Caribou stream 

 at Caribou village, Me. A second locality is at the Third Falls on 

 Green River, New Brunswick. The shells are common below the 

 falls and of large size. 



Planorbis bicarinatus Say. Common in the St. John's River at 

 Fort Kent, in the First Lake on Green River New Brunswick, and 

 in the Fish and Aroostook Rivers, Maine. 



Planorbis bicarinatus aroostookensis Pilsbry. Has only been ob- 

 served in the towns of Woodland and Caribou, Maine. 



Planorbis bicarinatus portagensis Baker. It is apparently a deep 

 water form and is found in Fish River, Maine. Specimens of this 

 variety are also found in First Lake, Green River, New Brunswick. 



Planorbis companulatus Say. Common in Fish River Lakes, 

 Maine, and First Lake, Green River, New Brunswick. 



Planorbis defactus Sny. Salmon Brook, Aroostook County, 

 Maine, and First Lake, Green River, New Brunswick. 



Planorbis trivolvis Say. Is well distributed in the Fish River 

 Lakes and in the Aroostook River Lakes. It is represented in the 

 First Lake, Green River, New Brunswick, by a large form with the 

 whorls somewhat flattened. 



Of landshells, Succinea retusa Lea is common around Temiscouata 

 Lake. 



Polygyra albolabris Say, is common on Mt. Wissic, Temiscouata 

 Lake. 



Pyramidida striatella and Zonitoides arboreus seem to be common 

 in the Northern part of New Brunswick. 



Zooyenitis harpa Say, I have collected near Green Mt. on Green 

 River. 



Succinea ovalis Say is common at Grand Falls, New Brunswick. 



Polygyra monodon cava Pilsbry was collected at St. Leonards, 

 New Brunswick. 



When a complete survey can be made of the St. John's River 

 there will be many interesting varieties or mutations discovered. 

 This survey should be made before the lumber operators and the 

 sawmills have destroyed the most important lakes and tributaries. 



