PLATE 44. 
VA \ AS 
A \ AR 
Fia@. 70—Silurus glanis, Linn. 
European Catfish ; Sheatfish. 
Lake Neufchatel, Switzerland. 
Pyloric cceca (a) 
Fie. 71—Stizostethium canadense (Smith) Jordan. 
Reduced one-half. 
Pylorie caeea (b) 
Fic. 72—Stizostethium salmoneum Raf. 
Reduced one-half. 
