THE ANATOMY OF ONCHOLATMUS VULGARIS, BAST. 149 



Fig. 12. — Transverse section Jhrougli ventral gland, showincr nucleus. 

 X 350. Stain: Tliionin, eosin. 



Fig. 13. — Transverse section at, the level of the termination of the oeso- 

 phagus. Immature female. X 350. Stain : Safranin, picronigrosin. 



Fig. 14. — Part of a transverse section in intestinal region. Mature 

 female. X SOO. Stain: Tliionin, eosin. 



Fig. 15. — Part of a transverse section, same as 14. 



Fig. 16. — Transverse section through anterior testicular region, showing 

 the germinal syncytium. X 350. Stain: Tliionin, eosin. 



Fig. 17. — Transverse section through posterior testicular region, ductus 

 ejaculatorius, and intestine. X 350. Stain : Safranin, picronigrosin. 



PLATE 8. 



Fig. is. — Transverse section through ovarian caecum, containing ripe 

 ovum with yolk granules. X 350. Stain : Tliionin, eosin. 



Fig. 19. — Transverse section through ovarian region (first part) and shell- 

 gland. X 350. Stain : Tliionin, eosin. 



Fig. 20. — Transverse section through ovarian region (first part), and 

 uterus. X 350. Stain: Hscniatin, picronigrosin. 



Fig. 21. — Transverse section, showing gonenteric canal opening into 

 intestine. X 350. Stain: Borax -carmine, picronigrosin. 



Fig. 22.— Gonenteric canal (between the sections represented in figs. 21 

 and 23). X 350. 



Fig. 23. — Gonenteric canal opening into vagina, x 350. 



Fig. 24. — Transverse section through vulva. X 350. Stain : Borax- 

 carmine, picronigrosin. 



Fig. 25. — Immature female. Transverse section through gonocoel. x 350. 

 Stain : Tliionin, eosin. 



Fig. 26. — Immature female. Transverse section through gonoduct not far 

 from vulva. X 350. Stain: Safranin, picronigrosin. 



Ascaris clavata. 



Fig. 26 «, — Transverse section, ovarian region, x 350. Stain: Hsema- 

 toxylin, eosin. 



Fig. 27. — Transverse section, oviduct. X 350. Stain : Haematoxylin, 

 eosin. 



Fig. 28. — Transverse section, uterus, x 350. Stain : Hsematoxylin, 

 eosin. 



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