9^9 S. GOTO. 



circular. Posterior sucker slightly elliptical, with its lorjger axis directed 

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

 length of the body proper ; with a marginal membrane and with its 

 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 barb-like process near it (fig. 6, PI. 

 XXV); 0.1 11 mm. long. (In the specimen on which I made the 

 measurement, the hooks of the two sides were of unequal length, that 

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

 giving the average above recorded.) ]\IoiUh small, at the same plane 

 with the hinder end of the anterior suckers, rharijnx divided by a 

 constriction into two unecpial parts. (JesopliiKjus very short. Intes- 

 tinal trunliS 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), dendri- 

 tic branches on the (3uter side and about as many shorter branches on 

 the inner. Common (jenital openinu a little behind the anterior sucker 

 of the left side, about midway between the lateral margin of the body 

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

 the hinder end of the anteri(jr third of the bodv, of a similar 

 form t(3 that (^f T. foliaceum. Oviduct arising at the liv^nt end of 

 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 base 

 of the penis. Uterus short, opening into the genital atrium al)out mid- 

 way between its external pore and the base of the penis. Vitcllarium 

 confined to the lateral regi(3ns and the anterior lobe of the body, only 

 accompanying the intestinal branches into the median region. Paired 

 yolk-ducts, yolk-reservoir, and impaired yolk-duct as in T. j'ohacenm. 

 Varjinal opening about as much behind the common genital opening as 



