HELMINTHES : COLOMBO MUSEUM. 187 



EXPLANATION OF PLATES 



Illustrating Dr. von Linstow's Paper on Helmintlies of Ceylon. 



g. vessel ; n. nerve ; c. cirrus-sac ; vd. vas deferens ; h. testis ; 

 ?;. vagina ; rs. reccptacidum mminis ; k. ovary; d. vitellarium ; 

 u. uterus ; s. male seminal vesicle ; sch. shell-gland ; sold, liaus- 

 torium. 



Plate I. 



Fig. 1. — Ascaris Jissicollis. Dorsal lip. 

 Fig. 2. — Same. Accessory lip. 



Fig. 3. — Ascaris coronata. Dorsal lip with accessory lips. 

 Fig. 4. — Pliysaloptera hrevis'pictilum, 6. Tail from below. 

 Fig. 5. — Spiroptej^a secretoria. Head ; /.free projecting secretory 

 filament. 



Fig. 6. — Spiroptera orca, 6. Tail from below. 



Fig. 7. — Same, ?. Immature egg. 



Fig. 8. — Same. Mature egg. 



Fig. 9. — Heterakis 2nisilla, 6. Tail from below. 



Fig. 10. — Strongylus digitatus, 6. Tail from below. 



Fig. 11. — Ankylostomwn mininuim. Head from the right side. 



Fig. 12. — Same, 6. Tail from the right side. 



Fig. 13. — Triclwcephalus discolor, 6. Tail from right side. 



Fig. 14. — Same, ?. An egg. 



Fig. 15. — EcJdnorJn/nchus teller. Anterior hook of rostellum. 



Fig. 16. — Same. Posterior hook. 



Fig 17. — Same. An egg. 



Fig, 18. — Lyperosomum squnmatiim, from below. 



Fig. 19. — Tristoinum megacotyle, from below. 



Fig. 20. — Same. Rod from the caudal sucker. 



Plates II. and III. 



Fig. 21. — Hymenolepis septaria. Transverse section. 

 Fig. 22. — Hymenolepis clausa. Transverse section. 

 Fig. 23.— Same. Hook. 



Fig. 24. — Hymenoleiris sjnnosa. Transverse section. 

 Fig. 25. — Same. Hook. 



Fig. 26. — Diorchis occlusa. Transverse section. 

 Fig. 27.— Same. Hook. 



Fig." 28. — Dai^ainea iJolycalcaria. Transverse section. 

 Fig. 29.— Same. Hook. 



Fig. 30. — Diploclietos volvulus. Transverse section ; on one 

 side the vas deferens is figured, on the other the vagina. 



2 C 8(17)05 



