GEOGRAPHICAL DISTRIBUTION. 15 ( J 



Vermont: Burlington, Colchester, and Shclburue, Chittenden Co. 

 Massachusetts: Grat'lon, Worcester Co.; Williamstowu, Berkshire Co. 



New York : Lake Champlain ; Ellenburg, Clinton Co. ; Westport and Elizabeth- 

 town, Ks.scx Co.; Fultou Lakes, Hamilton ami Herkimer Cos.; C niton, St. 

 Lawrence Co.; Port Jervis and Newburg, Orange Co.; Fishkill, Duchess 

 Co.; Fall.sburg, Sullivan Co.; Sherburne, Ghenango Co.; Cazenovia, Madison 

 Co.; Ithaca, Tompkins Co.; Berkshire, Tioga Co.; (Irnesee Piiver, Rochester, 

 Monroe Co.; Niagara, Niagara Co. ; Forestville, Chautauqua Co. 



New Jersey : Schooley's Mountain ; Orange ; Trenton. 



Pennsylvania : Bedford and Pattonville, Bedford Co. ; Windham, Bradford Co. ; 

 Hiunnielstown, Dauphin Co.; Carlisle, Cumberland Co.; Berwick, Columbia 

 Co.; Bainbridge, Lancaster Co.; Schuylkill River, near Philadelphia; Chester 

 Co. ; McKeau Co. ; Foxburg, Clarion Co. 



Maryland : Harford Co. ; Howard Co. ; Montgomery Co. ; Frederick Co. ; Wash- 

 ington Co. ; Garrett Co. ; Alleghany Co. 



District of Columbia : Eock Creek, Georgetown. 



Virginia : Clarke Co. ; Alexandria Co. ; Franklin, Southampton Co. ; tributaries 

 of Eappahannock Eiver, Stafford Co. ; James Eiver ; tributaries of James 

 River, Eockbridge Co. ; Lunenburg, Limenbiirg Co. ; Bath Co. ; Eeed Creek, 

 west of Wytheville, Wythe Co. ; Holston Eiver, Smyth Co. 



West Virginia : Williamsport, Grant Co.; South Branch of Potomac Eiver; Pat- 

 terson's Creek ; Petroleum, Eitchie Co. ; near White Sulphur Springs, Green- 

 brier Co. ; branch of Clinch Eiver, northern base of Clinch Mountains. 



North Carolina : Kiuston ; Newman's Fork, Blue Eidge, McDowell Co. 



Ohio : Marietta ; Cincinnati ; Yellow Springs ; Scioto Eiver, Columbus. 



Indiana : New Albany ; Fall Creek, Indianapolis. 



Lake Superior. 



Kentucky : Cumberland Gap, Josh Bell Co. ; Smoky Creek, Carter Co. ; Kentucky 

 Eiver, Little Hickman, Jessamine Co. ; Bear Creek, Grayson's Springs, Gray- 

 son Co. ; Mammoth Cave, Edmonson Co. 



Tennessee : Doe Eiver, Carter Co. ; Lineville Cave, near Blountsville, Sullivan Co. ; 

 Knoxville. 



For doubtful localities for C. Bartonii, see page 63. 

 VAR. robusta. 



Dominion of Canada : Humber Eiver and Don Eiver, Toronto ; Indian Creek, 

 Weston, Province of Ontario. 



New York : Forestville, Chautauqua Co. ; Genesee Eiver, Rochester, Monroe Co. ; 

 Sodus, Wayne Co. ; tributary of Racket Eiver, near Tupper's Lake, St. Law- 

 rence Co. ; Canton, St. Lawrence Co. ; Fulton Lakes, Hamilton and Herkimer 

 Cos. ; Natural Bridge, Jefferson Co. 



Maryland : Montgomery Co. 



Virginia : Fredericksburg. 



Illinois : Decatur. 



23. C. acuminatus. 



South Carolina : Saluda Eiver. 



24. C. latimanus. 



South Carolina : Columbia ; Greenville. 

 Georgia : Athens ; Milledgeville ; Eos well. 



