TWO NEW TREMATODKS. 853 



available for comparison. Following the pharynx, and about as 

 long as it, is a wide tesoph^gus, which bifurcates about midway 

 between the pharynx and the ventral sucker: The divevticula firp 

 fairly uniform, but become somewhat sinuous towards theij- ter- 

 mination, whiph ijs '45 mm, from the end of the body. 



The excretory vesicle is Y-shaped, with a long median stem 

 reaching the middle of the body and two short limbs, the left of 

 whicli extends as far forwfird as the left testis. Owing to the 

 fact that sections could not be made, it was impossible to determine 

 whether Odhner's view with regard to the shape of tlie excretory 

 vesicle in the Dicrocoeliidpe holds good in this case. To all 

 appearance, howevei', the paired limbs are part of the vesicle, 

 Their walls stapd out as distinctly, and are about the samp 

 thickness, as those of the main stem. 



The testes lie not far behind the ventral sucker. They are two 

 transversely oval bodies, separated from each other by a distance 

 equal to their diameter, They are situated obliquely, the right 

 being about half a diameter in advance of the left, aud being 

 separated from the ventral sucker by a similar distance. They 

 measure '31 mm, in transverse diameter, The cirrus-pouch is of 

 small size and lies entirely in frojit of the veptral sucker, It 

 measures '29 x '13 mm., and contains a small convoluted vesicula 

 seminalis, a comparatively long jmrs prostatica, and a short narrow 

 ductus ejaculatorius. The gejiital aperture is uiedian, just over 

 the intestinal bifurcation, 



The ovary lies a considerable distance behind the testes, about 

 midway between them and the end of the body. It is oji the 

 right side overlying the fight intestinal diverticulum. Its outline 

 is transversely oval and it is much larger than the testes, 

 measuring "31 X "47 mm. There appears to be no receptaculum 

 seminis, or if present it is obscui'ed by the uterus. The yolk= 

 glands are situated chiefly in the neck, the sides of which they 

 almost completely fill. They extend on each side from the oral 

 suckei- to well behind the ventral sucker, but they ai'e more ex- 

 tensive on the left than pn the right. On the right they stop at 

 the level of the bifurcation of the excretory vesicle, although 

 there ax'e a couple of small follicles near the ovary. On the left 

 they extend slightly beyond the \c\e\ of the ovary. In the neck 

 the follicles spread well in towards the mid^line of the body, but 

 behind the ventral sucker they lie entirely to the outer side of the 

 intestinal diverticula. The transverse yolk-ducts cross the body 

 about the level of the testes, and the shell-gland Ijes just behind 

 the right testis. 



The uterus is moderately voluminous and is thi-OAvn intq 

 irregular narrow convolutions. It does not extejid much behind 

 the ovary, but in front it overlaps the intestinal diverticula, and 

 winding between the testes it passes forward on the left side of 

 the ventral sucker and makes a few shoi^t turns in front of the 

 sucker before passing into the short vagina. The eggs are small 

 and numei'ous, measuring •036-"039 x 'OIS-'OIQ mm. 



pRoc. Zooi,. See— 1912. No. LVIJ. 57 



