9,', 2 s. (io'JV). 



circular. I'osteriur sucker Hlightly cllipticii], with its loii;r(;r axis (lir(!(:t(!fl 

 antero-posteriorly and with a diameter equal to about one-fifth the 

 length of the body proper ; with a marginal membrane; and with i1.s 

 internal surface divided into areas like those of T. Nozawae, T. ovale, 

 and T. foliaceum. Hooks in one pair, in the position of those in the 

 species just mentioned, solid, straight, bifurcating at the proximal end, 

 with a pointed, free end and with a barlj-like process near it (fig. G, I']. 

 XXV); 0.111 mm. long. (In the specimen on which I made the 

 measurement, tlie hooks of the two sides were of uriwjual length, that 

 of one side being 0.122 mm. and that of the other 0.100 mm., thus 

 giving the average above recorded.) Mouth small, at the same plane 

 with the hinder end of the anterior suckern. Pharynx divided by a, 

 constriction into two unequal parts. Oesophagus very short. Jiites- 

 tinal trunks continuous with each other some distance in front of the 

 posterior sucker, enclosing an elongated, oval area a little less than half 

 as long as the whole body ; sending out numerous (about ten), denflri- 

 tic branches on the outer side and about as many shorter IjriincljcH on 

 the inner. Common genital openiufj a little Ixjhind the anterior sucker 

 of the left side, about midway between the iMteniJ margin of tlie body 

 and the pharynx. Penis of moderate length, club-shaped. Ovari/ at 

 the hinder end of the anterior third of the body, of a similar 

 form to that of T. foliaceum. Oviduct arising at the front end (A 

 the ovary in the median line, and thence proceeding forwards and 

 towards the left it is continued into the ootyp at the level of the bjiso 

 of the penis. fJlerus short, opcrjing into the gcriifjil atrium about mid- 

 way between its external pore and the bnsc of flic penis. VitcU.ariitm 

 confined to the lateral regions and tJie anterior lobe of the borly, only 

 accompanying the intestinal branches into the median region. I'aircd 

 yolk-ducts, yolk-reservoir, and virpuircA yolk-duct as in T. foliaceum. 

 Vafjiml opening alxjut ks much behind the common genital ofxjning iis 



