338 AUSTRALIAN ENTOZOA. 



EXPLANATION OF PLATE. 



Fig. 1. — View of the whole animal, stained with borax carmine and slightly 

 squeezed out under the cover-glass { x 18). 



Fig. 2. — Longitudinal section through the anterior end, showing the common 

 genital chamber, vagina and cirrus. The section is cut some- 

 what obliquely owing to a bend in the animal ( x 18). 



Fig. 3. — Transverse section through the middle of the oral sucker, showing 

 the everted pharynx ( x 70). 



Fig. 4, — Longitudinal section through the anterior end of the animal, showing 

 the everted pharynx ( x 18). 

 All the figures, except the hooks in fig. 1, were outlined under a camera 



lucida. 



Reference letters. 



c.g.c, common genital chamber. — dr., cirrus. — ej.d., ejaculatory duct. — 

 g.p., genital aperture, — int., intestine. — o.s., oral sucker. — ov., ovary. — 

 ovid., OYidnct. — ^/i. , pharynx. — s.<7., shell gland. — t^ d; tr^,testes. — ut., uterus. 

 — vag., vagina. — v.d., vas deferens. — vit., vitelline glands. — vit.d., vitelline 

 duct. — V.S., ventral sucker. — ves.sem., vesicula seminalis. 



