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 Radiatum, cephalic 
extremity, female. 
41—Cylichnostomum MRadiatum, female, 
natural size. 
42—Cylichnostomum MKRadiatum, 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. 
cc 
ce 
6c 
PLATE 12. 
Fig. 48—Cylichnostomum Alveatum, cephalic ex- 
tremity, female. 
49—Cylichnostomum Alveatum, male, nat- 
ural size. 
ce 
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