F. J. Meggitt 
277 
ves. Vestibule. 
v.c. Canal joining dorsal and ventral vessels. 
v.d. Vas deferens. 
p.ff. Yolk-gland. 
PLATE XX. 
Fig. 1. The whole strobilus. stained, x 22. 
Fig. 2. Reconstruction from sections of the female genital ducts. 
Fig. 3. Mature egg, stained, x 374. 
Fig. 4. Dorsal view of a stained preparation of a proglottis with mature sexual organs. 
X 150. 
Fig. 5. RosteUum retracted, x 185. 
Fig. 6. Rostellum protruded, x 185. 
Fig. 7. Scolex. x 189. 
Fig. 8. Stained preparation of a proglottis, nearly ready for detachment, x 120. 
PLATE XXI. 
Fig. 9. Freehand reconstruction of the excretory system. x77. 
Fig. 10. Longitudinal vertical section through a proglottis, x 565. 
Fig. 11. Freehand reconstruction of the nervous system. x77. 
Fig. 12. Transverse section of the head through the rostellum and suckers, x 352. 
Fig. 13. Cirrus sac of Amoebotaenia sphenoides. x 750. 
