ox SOME QUEENSLAND TREMATODES. 
399 
tunnels, cutting one pro])oscis longitudinally and showing the tunnels or 
sheaths filled with mucus and rhahdites. x 5S. P. c. Cavity in the 
proboscis. M. r. Mucus with rhahdites. Ex. v. Branches from the 
excretory vesicle. 
Fig. 21. — Transverse section through the proboscis chaml)er, excretory 
vesicle and excretory pore, showing the relations of the excretoiy 
vesicle to the proboscis chamber, x 15. Ph. ch. Proboscis cham])er. 
Fig. 22. — Transverse section a little further forward than the two 
foregoing, showing the excretory vessel leading from the vesi(de into 
the central cavity of one of the arms of tiie proboscis, x 15. Ph. 
Proboscis, cut obliquely. 
Fig. 23. — Transverse section passing through the three anterior arms 
of the proboscis, showing them lying in their sheaths or tunnels. x 
20. Fb. s. Proboscis sheath or tunnel. 
Fig. 24. — Transverse section cutting the cirrus sac in the region of the 
vesicula seminalis. X 73. 
Fig. 25. Transverse section through the cirrus sac in the region of the 
prostate. X 85. 
Fig. 26. — Horizontal longitudinal section showing the anterior arch 
of the excretory vessels, x 70. 
Typhloccelum reticulare, figs. 27-30 and 33. 
Fig. 27. — Horizontal longitudinal section showing nerve-cords and 
ventral network of nerves. X 70. 
Fig. 28. — Photograph of whole mount, focussed about the middle of 
its thickness, showing the characteristic dorso- ventral winding of the 
uterus. X 20. 
Fig. 29. — Horizontal section through the anterior end, showing the 
relations of the cerebral ganglia and pharynx, x 53. 
Fig. 30. — Transverse section about the middle of the body, showing 
the characteristic coils of the uterus. X 53. 
Allopyge antigones, figs. 31 and 32. 
Fig. 31. — Transverse section (somewhat oldique) through the pharynx 
and base of the “oral sucker,” showing the muscle-fil)res in the walls of 
the latter, x 56. 
Fig. 32. — Transverse section in the region of the ovary, showing the 
receptaculum seminis and “ shell-gland.” X 45. 
Fig. 33. — Typhloccelum reticulare, horizontal longitudinal 
section, showing the network of excretory vessels. X 6U. 
