872 REPORT OF COMMISSIONER OF FISH AND FISHERIES. [154 



PLATE III. 

 Dibothrium plicatum Rud. 



Fig. 1. Mature strobile after lying for a short time in sea water, from life, X 1£. 



Fig. 2. Young specimen found wholly inclosed in a cyst-like cavity of the rectinal 

 wall, from life, X 4. 



Fig. 3. Lateral view of head of same, X 4. 



Fig. 4. Posterior segments of adult strobile, from alcoholic specimen, X 10. The 

 sketch was made from a segment made transparent in oil of cloves, a, cir- 

 rus and cirrus bulb. The relatively large ova are plainly seen through 

 the transparent walls of the segment. 



Fig. 5. Ovum, alcoholic, X about 200. 



Fig. C. Longitudinal section through the postero-median part of the strobile; a, a, 

 cirrus bulbs in marginal prolongations; b, longitudinal muscles; c, ova; 

 d, granular masses, presumably testes, X 15. 



Dibothrium rugosum Rud. 



Fig. 7. Longitudinal section through ripe segments; a, fascicles of longitudinal 

 muscles; b, 6, partitions separating adjacent segments; c, ova filling 

 the interior of the segments; d, shred of connective tissue; other similar 

 shreds are shown lying among the ova, X 21. 



Fig. 8. Transverse section of a ripe segment ; a, lateral aperture ; 6, b, layer of fas- 

 cicled longitudinal muscles ; c, shred of connective tissue extending into 

 the interior of the segment which is filled with ova. 



Fig. 9. Transverse section of antero-median segment, near the point where the ova 

 first appears ; a, position of cirrus and its bulb ; b, vas deferens ; c, c, 

 layer of fascicled longitudinal muscles. 



Fig. 10. Ova, alcoholic, X 200. 



Anihobothrium lacinialum, sp. nov. 



Fig. 11. V&v. filicolle, head and neck from life, X 34. 

 Fig. 12. Var. brevicolle, head and neck from life, X 38. 

 Fig. 13. Var. filicolle, front view of head, compressed, from life, X 42. 

 All the figures made by Margaret B. Linton. 



