Plate III. 



Fig. 17. Male. Front end. Apochr. 8 mm. Comp. 8. 



— 18. Male. Head. Apochr. 2 mm. Comp. 4. 



— 19. Female. Caudal end. Obj. C. Oc. 2. 



— 20. Female. Uterus and Vagina. Apochr. 8 mm. Comp. 4. 



— 21. Female. Vagina in profil. Apochr. 8 mm. Comp. 8. 



— 22. Male. Apochr. 8 mm. Comp. 8. After a preparation mounted in Canada-balsam, stained 



with Saffronine. 



— 23. Male. Limit between Oesophagus and Intestine. Apochr. 3 mm. Comp. 4. 



