240 MEMOIRS OP THE CARNEGIE MUSEUM. 



Localities in Pennsylvania represented in the Carnegie Museum: 



Oliio River, Shippingporl and Industry, Beaver Co.; Neville Island, Allegheny Co. 



Other localities represented in the Carnegie Museum: 



Lake-drainage: 



Lake Erie, Vermilion, Eric Co., Ohio; Ea Plaisance Bay, Monroe Co., Michigan (C. Goodrich). 

 Sandusky River, Fremont, Sandusky Co., Ohio (C. Goodrich). 

 Maumee and Erie Canal, Lucas Co., Ohio (C. Goodrich). 



Ohio-drainage: 



Oliio River, Toronto, Jefferson Co., Ohio; Parkershurg, Wood Co., West Virginia; Portland, Meigs 



Co., Ohio. 

 West Fork White River, Riverside, Greene Co., Indiana (J. D. Haseman). 

 Wabash River, New Harmony, Posey Co., Indiana (A. A. Hinkley). 

 Levisa Fork Big Sandy River, Prestonsburg, Floyd Co., Kentucky. 



Tennessee-drainage : 

 Tennessee River, Florence, Lauderdale Co., Alabama (H. H. Smith). 

 Bear Creek, Burleson, Franklin Co., Alabama (H. H. Smith). 

 Paint Rock River, Paint Rock, Jackson Co., Alabama (H. H. Smith). 

 Holston River, Hodges, Jefferson Co., Tennessee. 

 Clinch River, Sol way, Knox Co.; Edgemoor and Clinton, Anderson Co.; Black Fox Ford, Union Co.; 



Clinch River Station, Claiborne Co.; Oakman, Grainger Co., Tennessee. 



West of Mississippi: 

 Meramec River, Meramec Highlands, St. Louis Co., Missouri (N. M. Grier). 

 Marais des Cygnes River, Richhill, Bates Co., Missouri (W. I. Utterback). 

 James River, Galena, Stone Co., Missouri (A. A. Hinkley). 

 White River, Cotter, Baxter Co., Arkansas (A. A. Hinkley). 



Black River (H. E. Wheeler) and Spring River (A. A. Hinkley), Black Rock, Lawrence Co., Arkansas. 

 Ouacliita River, Arkadelphia, Clark Co., Arkansas (H. E. Wheeler). 

 Verdigris River, Wagoner, Wagoner Co., Oklahoma (F. B. Isely). 

 Bayou Pierre, De Soto Par., Louisiana (L. S. Frierson). 



Distribution and Ecology (See fig. 25) : Type locality, Ohio River (Rafinesque) 

 (Vanatta says "Falls of the Ohio"). 



In Pennsylvania this species is rare, and turns up only in the Ohio below 

 Pittsburgh. The few specimens I found there, were found in and below riffles, 

 probably washed out of shells-banks above them. 



According to Simpson (1900) this form is generally foimd in the Mississippi- 

 drainage, but crosses over into the lake-drainage in southern Michigan, Lake 

 Michigan, and Lake Erie (Sterki, 1907a, Walker, 1913, and our localities). How- 

 ever it has not been found on the Pennsylvanian shores of Lake Erie.^^^ In Ohio 



"' Call (1885) mentions it from western New York which extreme eastern extension might refer to 

 Lake Erie. Marshall (1895) quotes it from Buffalo, but from an entirely unreliable source. 



