THE CESTODA OF THE SCOTTISH NATIONAL ANTARCTIC EXPEDITION. 



PLATK II. 



Fig. 7. Entire specimen of Diljotlirioceplidlus ////////.*, n. sp. 



Fig. 8. Scolices of D. moliili*. n. sp. 



Fig. 9. Transverse section of proglottis of D. m/ilnUx. 



Fig. 10. through uterus and cirrus sac of D. iiiol-llia. 



Fig. 11. Proglottis of Dihotlin'oce/i/iahts pygoscelis, n. sp. 



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

 openings ami uterine coils. 



Fig. 13. Metacestode of Pkyllobafhriitm sp., from MuMier of Wc-ddell's Seal. 



Fig. 14. Scolex of Phyllobothnvm sp. 



Fig. 15. Larval Tetrarliynchus fnnn the muscles of the Bonito. 



Fig. 1G. Transverse section of larval Tetrarhynchvs through retractor muscles of prohoscides. 



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



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

 vessels. 



(ROY. soc. EDIN. TRASS., VOL. XLVIII., 453.) 



