344 'on somk trkmatode parasitks of Australian frogs, 



ventral sucker. The female duct now runs backwards, near 

 the middle longitudinal line of the body, forming a loop, the 

 receptaculum seminis uterinum (Fig. 79), filled with sperms, 

 and reaching a length of one-third that of the body. From 

 this point, the uterus proceeds in a number of loops, which 

 fill up, first, the right side of the body behind the testes, 

 then cross over near the ventral sucker and fill up the left 

 side in the same extent, the metraterm finally running along- 

 side the cirrus-sac to the genital chamber. 



The follicles of the vitelline glands are few in number, 

 and rather large in size, more or less pear-shaped. The right 

 and left groups are connected by a continuous band of 

 follicles, crossing the body in a dorsal position. There are 

 about 10 on each side. The two groups are situated at the 

 sides of the pharynx and oesophagus, and anterior and dorsal 

 to the intestinal limbs. 



The eggs, which fill up the numerous loops of the uterus, are in 

 va.st numbers. Thev are light brown in colour at first, becoming 

 dark brown by the time they reach the distal end of the uterus. 

 They are small in size, 0-0236 mm. long, by 0011 7 mm. broad; in 

 shape they are almost a flattened ellipse, with the long sides 

 approximately parallel to one another. 



In its affinities, this Australian species appears to stand nearest 

 to the two Asiatic species, Phurogenes gasfroporus Liihe, and P. 

 sphcericus Klein; being, perhaps, neare.stof all to the latter. While 

 agreeing with each of these species in the relative positions of the 

 testes and cirrus-sac, and in having the genital pore on a level 

 with the oral sucker, our species further agrees with P. spharicus 

 in the position of the excretory pore, in having the testes along- 

 side the ends of the intestinal limbs and in front of the ventral 

 sucker, and in the disposition of the uterine loops; dift'ering in 

 these respects from P. gastroportis, which lias the excretory pore 

 quite ventral, and the testes behind the end^i of the intestinal 

 limbs and alongside the ventral sucker. P. freycineti, in the 

 relatively smaller ventral sucker, differs from P. sphcricus (as 

 indeed frpm all other species of the genus) in the small size of the 



