PLATE 11. 

 Fig. 31 — Cylichnostomum Tetracanthum, cepha- 

 lic extremity, male. 



" 32 — Cylichnostomum Tetracanthum, male, 

 natural size. 



'' 33 — Cylichnostomum Tetracanthum, fe- 

 male, natural size. 



" 34 — Cylichnostomum Nassatum, cephalic 

 extremity, female. 



" 35 — Cylichnostomum Nassatum, male, nat- 

 ural size. 



" 36 — Cylichnostomum Nassatum, female, nat- 

 ural size. 



'' 37 — Cylichnostomum Bicoronatum, caudal 

 extremity, female. 



'' 38 — Cylichnostomum Bicoronatum, male, 

 natural size. 



'^ 39 — Cylichnostomum Bicoronatum, female, 

 natural size. 



'' 40 — Cylichnostomum Eadiatum, cephalic 

 extremity, female. 



'' 41 — Cylichnostomum Eadiatum, female, 

 natural size. 



'' 42 — Cylichnostomum Eadiatum, female, 

 natural size. 



" 43 — Cylichnostomum Bicoronatum, cephalic 

 extremity, female. 



<< 44 — Cylichnostomum Bicoronatum, mouth, 

 female. 



" 45 — Cylichnostomum Labratum, cephalic 

 extremity, female. 



" 46 — Cylichnostomum Labratum, male, nat- 

 ural size. 



'' 47 — Cylichnostomum Labratum, female, nat- 

 ural size. 



PLATE 12. 



Fig. 48 — Cylichnostomum Alveatum, cephalic ex- 

 tremity, female. 

 *' 49 — Cylichnostomum Alveatum, male, nat- 

 ural size. 



Inserted 



between pages 



12S and 129 



