80 MEMOIRS OF THE CARNEGIE MUSEUM. 



Beaver River, Wampum, Lawrence Co. (G. H. Clapp & H. H. Smith). 



Connoquenessing Creek, Ellwood City, Lawrence Co. (G. H. Clapp & H. H. Smith; G. L. Simpson, Jr.); 



Harmony, Butler Co. 

 Slipperyrock Creek, Wurtemberg, La^vrence Co". 



Neshannock Creek, Eastbrook and Volant, Lawrence Co.; Leesburg, Mercer Co. 

 Mahoning River, Mahoningtown (Type locality), and Coverts, Lawrence Co. 

 Shenango River, Harbor Bridge and Pulaski, Lawrence Co.; Sharpsville, Clarksville, Shenango, and 



Jamestown, Mercer Co. 

 Pymatuning Creek, Pymatuning Township, Mercer Co. 



A llegheny-drainage : 

 Allegheny River, Aladdin, Godfrey, Kelly, and Templeton, Armstrong Co.; Tionesta and Hickory, 



Forest Co.; Warren, Warren Co.; Larabee, McKean Co. 

 Buffalo Creek, Harbison, Butler Co. 

 Conemaugh River, New Florence, Westmoreland Co. 

 Loyalhanna River, Idlepark and Ligonier, Westmoreland Co. 

 Crooked Creek, Rosston, Armstrong Co. 

 Little Mahoning Creek, Goodville, Indiana Co. 

 Sandy Creek, Sandylake, Mercer Co. 



French Creek, Utica, Venango Co.; Cambridge Springs, Crawford Co. 

 Conneaut Outlet, Conneautlake, Crawford Co. 

 Conneauttee Creek, Edinboro, Erie Co. 

 Leboeuf Creek, Waterford, Erie Co. 

 Brokenstraw Creek, Garland, Warren Co. 

 Connewango Creek, Russell, Warren Co. 



Monongahela-drainage : 

 Dunkard Creek, Mount Morris, Greene Co. 



Lake Erie-drainage: 

 Conneaut Creek, Springboro, Crawford Co.; West Springfield, Erie Co.^' 



Other localities represented in the Carnegie Museum : 



Lake-drainage: 

 Shiawassee River, Genesee Co., Michigan (B. Walker, donor) (Saginaw-drainage). 

 Raisin River, Tecumseh, Lenawee Co., and Grape P. 0., Monroe Co., Michigan (C. Goodrich). 

 St. Marys River, Rockford, Mercer Co., Ohio (C. Goodrich). 

 Swan Creek, Toledo, Lucas Co., Ohio (C. Goodrich). 



Ohio-drainage: 

 Mahoning River, Leavittsburgh, Trumbull Co., Ohio (Smith collection). 

 Tuscarawas River, Ohio (Holland collection). 

 Scioto River, Ohio (Hartman collection). 



Wabash River, Geneva, Adams Co., and Bluffton, Wells Co., Ind. (C. Goodrich). 

 West Fork River, Lynch Mines, Harrison Co., West Virginia; West Milford, Harrison Co., West ^'irgiIlia 



(W. F. Graham); Lightburn and Weston, Lewis Co., West Virginia. 



^ The specimens from Conneaut Creek, which flows to Lake Erie, are all typical, medium-sized 

 coccineum, with red nacre, which color is never found in the lake-form, and are not the latter (pauper- 

 culum). 



