294 THE CHICAGO ACADEMY OF SCIENCES. 



history is complete. It now inhabits the Nova Scotian, Canadian. 

 Hudsonian, Californian and Columbian regions. 



RECORDS. 



UNITED STATES. 



CALIFORNIA: Pacific Grove, Monterey Co. (Berry); near Monterey, 

 Monterey Co. (Ball). 



MICHIGAN: Alpena, Alpena Co. (Nason) ; Crooked Lake, Emmet Co.; 

 Pine Lake, eight metres, Charlevoix, Charlevoix Co. (Walker) ; Emmet, Grand 

 Traverse, Alpena, Macomb and Oakland Counties; generally distributed over the 

 state (Walker). 



NEW YORK : Braddock's Bay, near Manitau, Monroe Co., Lake Ontario 

 (Baker); Squaw Island, near Buffalo, Erie Co. (Miss Walker). 



WASHINGTON: Columbia River, Vancouver, Clarke Co. (Ball). 



BRITISH AMERICA. 



KEEWATIN : Attawapiskat River (Ball) ; Kawinogans Lake and Kanuchuan 

 River, Attawapiskat River; Ozhiski Lake; Wapicopa Lake, Winisk River (Whit- 

 eaves). 



ONTARIO: Ottawa, Carleton Bist. (Billings, Lea Coll.); Fort Francis, 

 Winnipeg River, Rainy River Bist. (Latchford). 



SASKATCHEWAN : Grand Rapids of Saskatchewan River, near Lake Winni- 

 peg (Ball). 



GEOLOGICAL DISTRIBUTION : Pleistocene. 



RECORBS. 

 UNITED STATES 

 MARL DEPOSIT 



INDIANA : Three-fourths mile southwest of Stewartsville, Posey Co. ; one 

 and one-half miles northwest of Petersburg, Pike Co. (Smith. Inst.). 



MICHIGAN: Kegomic, Emmet Co. (Slocum). 



MINNESOTA: Fergus Falls, Otter-tail Co. (E. P. Berkey). 



NEW JERSEY: White Pond, Sussex Co. (Pilsbry and Rhoads; Weller) ; 

 near Franklin, Sussex Co. (Say). 



NEW YORK: Herkimer Co., in calcareous tufa (Lewis). 



ALASKA. 



ALASKA: Left bank of Yukon River, below old Fort Yukon (Ball). 

 BRITISH AMERICA. 



NEW BRUNSWICK: Sawler's Lake, St. John, St. John Bist. (Ball). 



ONTARIO: Hemlock Lake, New Edinburg, east of Ottawa, in soft white 

 calcareous-argillaceous matrix (Ami) ; Ottawa, Carleton Bist. (Ball) ; Eagle's 

 Nest Lake, Lower Canada (B'Urban; Whiteaves). 



QUEBEC: Anticosti Island (Ball; Schmidt). 



ECOLOGY: Galbana prefers a habitat where the water is clear 

 and in more or less movement. 



REMARKS : Galbana is very little understood among conchologists, 

 probably on account of its being first described as a fossil. Is is very 

 common in many localities, has a wide range and is remarkably uni- 

 form. It has been mistaken for both Galba humilis and Galba humilis 

 modicella, but it is a much more solid shell. It is a more robust shell 



