1912.] NATURAL SCIENCES OF PHILADELPHIA. 47 



Catostomus nigricans Le Sueur. 



Cocalico Creek near Denver, Lancaster County; McKenny Run 

 and tributary North Branch of Two Lick Creek, Indiana County; 

 Neshannock River at Newcastle, Lawrence County. 



Erimyzon sucetta oblongus (Mitchill). 



Chester Creek near Cheney, Chester County; Walnut Hill, 

 Montgomery County; Neshaminy Creek near Langhorne, Mill 

 Creek at Wycombe, Guinea Creek, Bucks County; tributary of 

 Bushkill Creek at Belfast, Northampton County; Cocalico Creek 

 at Witmer's Mills, Lancaster County. 



Moxostoma aureolum (Le Sueur). 



Home, Elders, Little and Cowanshanoc Runs, branch of Big 

 Mahoning Creek, Grant and Pine Townships, Indiana County; 

 Erie, Erie County. 



Ameiurus lacustris (Walbaum). 



Erie. 



Ameiurus nebulosus ( Le Sueur). 



Chester Creek near Cheney, Chester County; Mill Creek and 

 quarry-holes at Gladwyne, Montgomery County; Long Neck at 

 Tinicum Island, Delaware County; Scott's Creek, and Mill Creek 

 at Wycombe, Bucks County ; Trout Run near Ephrata and Witmer's 

 Mills, Lancaster County; Cherry, McKenny and Simpson's Runs, 

 Indiana County. 



Noturus flavus Rafinesque. 



Two Lick Creek and Cherry Run, Indiana County. 

 Schilbeodes gyrinus (Mitchill). 



Big Neshaminy Creek at Etterton and near Long Pond, Bucks 

 County. 



Esox americanus (Gmelin). 



Long Neck at Tinicum Island, Delaware County; Scott's Creek 

 and near Penn Valley, Bucks County; Cocalico Creek at Witmer's 

 Mills, Lancaster County. 



I have examined several large examples of E. masquinongy at Erie, 

 taken in Presque Isle Bay. 

 Umbra limi (Kirtland). 



Meadeville, Crawford County. 



Umbra pygmaea (De Kay). 



Scott's Creek near Penn Valley and Guinea Creek, Bucks County. 

 Fundulus heteroclitus maorolepidotus (Walbaum). 

 Scott's Creek, Bucks County. 



