TROGLOTREMIM; 249 



It is not a uniform, straight cylinder 0*25 to 0*33 mm. in diameter, as 

 in Fasciolopsis buski, but even in fully extended flukes is typically 

 convoluted. It is i mm. thick in the middle, but in other parts varies 

 much from this. The posterior end of the cirrus sac is- at two-thirds 

 or more of the distance from ventral sucker to shell gland. In the 

 case of Fasciolopsis buski the posterior end of the sac only extends 

 half-way. 



Seminal Vesicle has a peculiar convoluted, saccular and angular 

 course, but the caecal appendage characteristic of the genus appears 

 to be absent ! 



Excretory System. The main stem gives off very regular transverse 

 branches which are well seen posteriorly. 



Eggs. 100 yu, by 73 yL6. Thin shelled. 



Habitat. Intestine. Mahommedan from Calcutta. 



[It is evident that a re-examination of fresh material is required 

 before the validity of all these species can be accepted. J. W. W. S.] 



Family. Troglotremidae, Odhner, 1914. 

 Genus. Paragonimus, Braun, 1899. 



Body egg-shaped or somewhat elongated, generally more broadly rounded in 

 front than behind. Covered all over with spear-shaped spines arranged in groups. 

 Gut caeca winding with dilatations or constrictions in parts. Ventral sucker in or 

 in front of the middle of the body. Excretory bladder cylindrical, very long and 

 broad, reaching in front to the bifurcation of the gut. The lateral excretory canals 

 join the bladder only a little in front of the excretory pore. Genital pore median 

 just behind the ventral sucker. Genital sinus duct-like. Cirrus sac absent. Male 

 terminal organs very small. Ejaculatory duct present. Testes and ovary deeply 

 lobed, the testes in or just behind the middle, the ovary somewhat laterally placed 

 just behind the ventral sucker. Uterus forms a coil behind the ventral sucker. 

 Eggs rather large, thin shelled, the ovarian cell still unsegmented on deposition. 

 Receptaculum seminis, small. 



Parasitic in the lungs of mammals, enclosed in cyst-like cavities, generally in 

 pairs. 



Type Species. P. westermanii in the tiger. 



Paragonimus ringeri,' Cobb., 1880. 



Syn. : Distoma ringeri, Cobb., 1880; Distoma pulmonale, Baelz, 1883 ; 

 Distomapulmonis, Suga, 1883. 



The body is of a faint reddish-brown colour and plump oval 

 shape. The ventral surface a little flattened ; 7-5 to 12 mm. in length, 

 4 to 6 mm. in breadth, and 3*5 to 5 mm. thick (in man). The oral 

 sucker (075 mm.) is subterminal ; the ventral sucker (0*8 mm.) 

 somewhat in front of the middle of the body. Pharynx spherical, 



