DURING HIS SOJOURX IX THE WESTERN PACIFIC. 567 



PLATE LV. 



Fig. 10. View of the posterior proglottides of B. plicatus. x 8. 



Fig. 11. Calliohothrium aetiobatis n. sp. The whole tape- worm, showing end view of 

 head, x 12. 



Fig. 12. Side view of head of C. aetiobatis, showing the bifurcated hooks and tlie three 

 bothria. x 12. 



Fig. 13. Adelobothrium aetiubatidis, n. g. View of the entire worm, x 8. 



Fig. 14. End view of head of A. aetiobatidis, showing the rosteUum and the swollen neck 

 bearing four small suckers on its anterior surface, x 2-5. 



Fig. 1.5. A section of the same, showing how the rostellum is completely buried in the 

 intestinal wall of the Aetiobatin narinari. The swollen neck with two small suckers is shown. 



Fig. 16. Head of Falaia varani n. g. surrounded by remains of the lining of the 

 duodenum of its host Varanus indicus. x 4. 



Fig. 17. View of P. vai-ain. x 8. a. Entire worm, showing the grooved nature of the 

 middle proglottides and some genital pores. 6. Posterior end showing the outline of the 

 posterior proglottides. 



Fig. is. Transverse section of a very young proglottis of P. varajii, showing the deep 

 longitudinal furrows and the deeply stained longitudinal muscles, and the two longitudinal 

 water-vascular canals and a commencing genital duct upon each side. 



Fig. 19. Transverse section of a ripe proglottis of P. varani, showing the eggs in 

 clumps in ulero, and the scant remains of the reproductive organs, the penis is partially 

 protruded. 



Fig. 20. A longitudinal horizontal section through ripe proglottides of P. varani, showing 

 characteristic arrangement of eggs. 



Fig. 21. A longitudinal horizontal section near the anterior end of P. varani. x 20. 

 Showing the characteristic ladder-like arrangement of the deeply staining muscles. 



Fig. 22. Head of Phyllobothrium dipsadomorjihi n. sp. x about 12. 



Fig. 23. View of head of Coelodela kuvaria n. g. x about 12. 



PLATE LVI. 



Fig. 23 a. Diagram of the water-vascular plexus in the head of C. kuvaria, seen from 

 above. 



Fig. 24. A longitudinal horizontal section of the adult proglottides of C. kuvaria, showing 

 the valves in the excretory system. 



Fig. 2.0. An obliquely transverse section through older sections of C. kuvaria to show 

 the great space occupied liy the transverse excretory canal. 



Fig. 26. A longitudinal vertical section through C. kuvaria, taken through the most 

 posterior proglottides. 



Fig. 27. Three views of tlie head of Prosthecocotyle diomedeae Fuhrmann. a. Anterior 

 and dorsal view. h. Lateral view. c. Dorsal view. 



Fig. 28. Outline of middle and posterior proglottides of P. diottiedeae. 



