1917.] NATURAL SCIENCES OF PHILADELPHIA. 117 



secured a small collection in Sullivan County (Loyalsock Creek at 

 Shady Nook). August 4, 1916, Dr. Pennell and the writer visited 

 Chester County (East Branch of Big Elk Creek near Elk View, 

 West Branch of Big Elk Creek, and Little Elk Creek near Hickory 

 Hill). 



Salvelinus fontinalis (Mitchill). 



Trout Run and Cold Run. 

 Ameiurus nebulosus (Le Sueur). 



Pennsburg, Hosensack, Jordan Creek near Helfrich's Springs, 

 Indian and Swamp Creeks. 



Schilbeodes gyrinus (Mitchill). 



Saucon Creek and Lanark. 



Schilbeodes insignis (Richardson). 



New Tripoli, Lanark, Skippack Creek, Martin's Creek and Elk 

 View. 



Pimephales notatus (Rafinesque). 



Souderton, Swamp Creek, and Lehigh River south of Rittersville. 



Semotilus bullaris (Rafinesque). 



Jordan Creek near Helfrich's Springs and Lyon Valley, Indian 

 Creek, New Tripoli, Lizard Creek and Lehigh River. 



Semotilus atromaculatus (Mitchill). 



New Tripoli, vSwamp Creek, Vera Cruz, Lanark, Jordan Creek, 

 Lehigh River, Coplay, Fell, Lizard and Indian Creeks, Haj' and 

 Beaver Creeks near White Bear with tributary above, Fishing Creek 

 tributary near Miller's Gap, Keystone and above in Fishing Creek, 

 Cove Creek, Wister Island, Simmon's Run and North Branch, 

 tributary Conodoguinet near Lamb's Gap and below Simon's Run, 

 Joanna, Joanna Heights, and Shady Nook. 



Leuciscus vandoisulus \alenciennes. 



West Branch of Big Elk Creek and Little Elk Creek. 



Abramis crysoleucas (Mitchill). 



Pennsburg, Hosensack, Lanark, Jordan Creek, Souderton, Lehigh 

 River, Skippack, Indian and Swamp Creeks, Joanna. 



Notropis bifrenatus (Cope). 



Lanark, Lehigh River, Souderton and Bangor. 



Kotropis procne (Cope). 



Swamp Creek, Elk View, West Branch of Big Elk and Little Elk 

 Creeks, Wister Island. 



