246 S. GOTO. 



their lengths. Phanjnx simple but sUghtly constricted in the middle, 

 short, cylindrical. Oesoplmjus very short. Intestinal trunks continuous 

 posteriorly a little in front of the posterior sucker, enclosing a 

 kidney-shaped area ; the posterior commissural limb very slightly 

 curved, with its convexity directed forwards; each intestinal trunk 

 with numerous, repeatedly bifurcating branches on the outer side, 

 but sending only a few branches on the inner, two of which 

 are longer than the others and send out secondary branches. 

 The foremost of these approaches its fellow of the opposite side 

 in the median line of the body and forms with it the figure of 

 two bows with their backs turned against each other, as in T. sinu- 

 atuin. Penis tolerably long, club-shaped. Ovanj in the hinder part 

 of the anterior half of the body proper, roundish, longer transverse- 

 ly than antero-posteriorly, deeply lobed. Oviduct arising at the front 

 end of the ovary in the median line, and thence proceeding at first 

 towai'ds the left and then more forwards, it is continued into the 

 ootyp. Uterus tolerably long, opening to the exterior just behind 

 the opening of the genital atrium, on the same plane with 

 the liinder end of the anterior sucker. Vitellariuin mostly con- 

 fined to the lateral regions of the body, but also extending into the 

 anterior, median lobe of the body, and wholly absent from the median 

 region except around the intestinal branches. Paired yolk-ducts 

 formed by the union of two large yolk-ducts as in the other species ; 

 uniting with each other and forming a yolk-reservoir at the front 

 end of the ovary a little on the left side of the median line. Unpaired 

 yolk-duct very short, connecting the yolk-reservoir Avith the oviduct. 

 Vaginal opening some distance behind the uterine opening and more 

 removed from the median line ; vaginal canal proceeding backwards 

 and towards the median line with numerous close convolu- 

 tions, forming a capacious, elongated flask-shaped receptaculum seminis 



