28 THE NAUTILUS. 



Monroe Co.; Patterson's Creek, Mineral Co.; Potomac River, 

 Cherry Run (Pils.); Potomac River, Harper's Ferry (Walker). 



Wyoming : Yellowstone National Park (Stearns). 



Dominion of Canada — Quebec : Meaches Lake, Hull; Chaudiere 

 River; Chelsea (Pils.); Caprouge (Walker); Anticosti (Latchford); 

 Brome Lake, Knowlton (Whiteaves MSS). 



Ontario : Sparrow Lake, Simcoe District; Puzzle Lake, 40 miles 

 north of Napanee; Rideau River; Ottawa River (Pils); Little River, 

 Walkerville (Walker); Lake Simcoe (Stearns). 



Algoma: Dog River, north shore Lake Superior; Gores Bay, 

 Manitoulin Island, Lake Huron (Walker); Moose Factory, Hudson 

 Bay (Dall). 



Manitoba : Lake Winnipeg; Lake Manitoba (Christy). 



Nova Scotia : Dartmouth Lakes (Jones). 



Keewatin : Lake St. Joseph; Kawinogans River, Albany River. 

 Knee Lake (Whiteaves); Saskatchewan River, Grand Rapids (Dall.); 



New Brunswick : Kennebecasis River and elsewhere (Matthew 

 and Stead). 



Mexico : Yaqui River, Guaymas, W. Mexico (Stearns). See p. 



Bibliography. 



The following list includes all papers cited as authority for distri- 

 bution in the preceding part of this paper. It is no doubt imperfect, 

 as it embraces only such literature as has been accessible to the 

 writer. For the sake of brevity many other papers examined, which 

 afforded only duplicate records or simply a general " State " record 

 are omitted : 



Adams, C. B Shells of Fresh Pond. (Am. J. Sci. and Arts, 



O. S. XXXVI, p. 392, 1839.) 



Adams, C. B. — Catalogue of the Mollusca of Middlebury, Ver- 

 mont, and vicinity. (Am. J. Sci. and Arts, O. S. XI, p. 269, 184L) 



Aughey, Samuel Catalogue of the Land and Fresh-water Shells 



of Nebraska. (Bull. U. S. Geol. Survey III, p. 701, 1877.) 



Baker, F. C. — The Mollusks of Cedar Lake, Indiana. (Naut. 

 XVII, p. 113, 1904.) 



Baker, F. C. — A Catalogue of the Mollusca of Illinois. (Bull. 

 111. St. Lab. Nat. Hist. VII, p. 106, 1906). 



Beauchamp, W. M Land and Fresh-water Shells of Onondaga 



County and State of New York (1886). 



