THE CESTODA OF THE SCOTTISH NATIONAL ANTARCTIC EXPEDITION. 255 



PLATE II. 



Fig. 7. Entire specimen of Diliothrioceplialm molilis, n. sp. 



Fig. 8. Scolices of D. mobile's, n. sp. 



Fig. 9. Transverse section of pvoglottis of D. mobilis. 



Fig. 10. ,, through uterus and cirrus sac of D. moliilis. 



Fig. 11. Proglottis of Diliotlirioi-ephalus pygoscelis, n. sp. 



Fig. 12. Diagrammatic longitudinal section of proglottides of D. pygoscelis, showing position of sex 

 openings and uterine coils. 



Fig. 13. Metaeestode of Phyllolnthnuni sp., from blubber of Weddell's Seal. 



Fig. 14. Scolex of Phyllolotliiivm sp. 



Fig. 15. Larval Tetrarhynchus from the muscles of the Bonito. 



Fig. 16. Transverse section of larval Tetrarliyncliits through retractor muscles of proboscides. 



Fig. 17. Diagram of posterior end of larval Tetrarliynclius showing excretory bulb retracted. 



Fig. 18. Transverse section of larval TeirarTiynclius through retracted bulb, showing row of excretory 

 vessels. 



(ROY. soc. EDJN. TRAXS., VOL. XLVIII., 453.) 



