PLATE 44. 



Pig. 70 — Silurus glanis, Linn. 

 European Catfish ; Sheatfl^h. 



Lake Neufchatel, Switzerland. 



Pyloric coeca (a> 

 Fio. 71 — Stizostethinm canadense (Smith) JordaD. 

 Reduced oue-half. 



l'yli>iic COECU ib) 



Fig. 72 — Stizostethium ealmoueum liaf. 



Reduced one-half. 



