PLATE 48. 
Fic. 69—Noturus sialis Jordan. 
White River, Indiana. (Type, nat. size.) 
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RAS RY AN WS 
AY 
FiG, 69 (6)—Noturus gyrinus (Mitch.) Raf. 
Hudson River. (Nat. size.) 
FI. 69 (c)—Noturus gyrinus (Mitch.) Raf. 
Hudson River. (Nat. size.) 
