THE CE8T0DA OF THE SCOTTISH NATIONAL ANTARCTIC EXPEDITION. 255 



Plate II. 



Fig. 7. Entire specimen of Dihothriurep/ialus mohi/is, n. sp. 



Fig. 8. Scolices of D. mohilis. n. sp. 



Fig. 9. Transverse section of proglottis of D. mohilis. 



Fig. 10. „ „ through uterus and cirrus sac of D. iiiohiHs. 



Fig. 11. "Proglottis of Diliof/irioi'epJialus pijr/nscelis, n. sp. 



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

 openings and uterine coils. 



Fig. 1.3. Metacestode of PhyUohathrittm sp., from lilulil.er of AVeddell's Seal. 



Fig. 14. Scolex of Phi/UohotJirnini. s]). 



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



Fig. 16. Transverse section of larval 'J'etrarhi/nchus through retractor nnuscles of prolioscides. 



Fig. 17. Diagram of posterior end of larval Tetrarhynchus showing excretory Indli retiacted. 



Fig. 18. Transverse section of larval Tetravhynchvs through retracted Lull), showing row of excretory 

 vessels. 



(ROY. SOC. EDIX. TRANS., VOL. XLVllL, AhZ.) 



