EXPLANATION OF PLATE V. 
Fig. 1. Echinorhynchus agilis Rudolphi. Sketch of living specimen, male, flattened 
under compressor, enlarged 10 diameters. 
Fic. la. Another specimen, male, natural size. 
Fic. 2. Sketch of living specimen, female, flattened under compressor, enlarged 10 
diameters. 
Fic. 2a. Another specimen, female, natural size. 
Fic. 2b. Ova, enlarged 200 diameters. , 
Fic. 3. Outline of specimen with proboscis retracted, enlarged 25 diameters. 
Fig. 4. Outline of male, from C. obscurus, enlarged 15 diameters. 
Fic. 5. Posterior extremity of another male, showing bursa everted, enlarged 15 
diameters. 
Fic. 6. Hooks of proboscis; a, from first row; b, from second row; ¢, from third row; 
enlarged 150 diameters. 
Fic. 7. Echinorhynchus acus Rudolphi; outline of male, enlarged 20 diameters. 
Fic. 8. Male and female alcoholic specimens, natural size. 
Fics. 9 & 10. Specimens in sea-water, enlarged 2 diameters. 
Fic. 11. Specimen shown in Fig. 10, after lying some time in fresh water, enlarged 
2 diameters. 
Fig. 12. Outline showing proboscis parily retracted, retractor muscles and lemnisci, 
enlarged 15 diameters. 
Fig. 13. Anterior end of female, showing protruded proboscis and ova, enlarged 15 
diameters. 
Fig. 14. Tenia dilatata sp. nov. Head and anterior part of neck, enlarged 18 diame- 
ters. 
Fia. 15. Portion of neck, showing dilated folds, enlarged 18 diameters. 
Fic. 16. Outline of posterior segments, enlarged 4 diameters. 
Fic. 17. Rhynchobothrium tenuicolle Rudolphi. Outline of strobile, enlarged 2 diame- 
ters. 
Fiaq. 18. Head and neck of same, enlarged 30 diameters. 
Fria. 18a. Portion of proboscis, enlarged 350 diameters. 
Fia. 18). Hooks near apex of proboscis, enlarged 350 diameters. 
Figures 1, 1a, 2, 2a, 2b, 7, 9, 10, 11, 14,15, 16 from life; others from alcoholic and 
mounted specimens, 
All figures made by Mrs. Edwin Linton. 
508 [56] 
