218 s. GOTO. 



portion -which ends with a mucronate apex, a middle portion oc- 

 cupying al)oiit half the whole length of the hody, and a posterior, 

 broad portion mostly free from the vitellariiim and carrying the 

 Suchers near its posterior margin. The innermost small pair of 

 suckers situated in a line witli the posterior halves of the others. 

 Chitinous pieces of the suckers as represented in fig. 3, PI. XIIT. 

 Inner pair of Itoolis solid, very much smaller than the outer, with 

 strongly recurved, pointed end and hcnt almost at a right angle at 

 the middle of theii* lenii-th, 0.03 mm. lonir if its middle hendintr he 

 straightened out. Outer pair solid, strongly recurved at the end, with 

 a large process a little distally from the middle of its length, 0.01) mm. 

 long (curvatiu'e not taken into account); their f(3rms as represented 

 in fig. 2, PI. Xiri. (JesopluKjus single only f(jr a short distance 

 posterior to the small pharynx, and sending out numerous lateral, 

 anastomosing: l.jranches durini»' the remainder of its leiiü'th. Two 

 pairs of main intestinal ininlis may be distinguished, the inner 

 of which corresponds to those of other species and reaches the 

 hinder end of the Ixjdy ; the outer on the other hand extends 

 only for about two-thirds of the whole length of the body from 

 a short distance behind the front end of the body close to the 

 lateral mar^-ins. All the four trunks are connected with each other 

 by numerous, closely anastomosing branches. Common tjenital opoiintj 

 near the hinder end of the anterior, slender portion of the body, just 

 behind the beginning of the inner pair of intestinal trunks. Ovanj 

 median, at aljout the middle of the whole length of the body ; its 

 windings very complicated, as represented in fig. 1, PI. XIV. Onduct 

 arising from tlie posterior right end of the ovar}^, thence proceeding 

 backwards and towards the left side, and almost reaching- the median 

 line of the l)ody suddenly turns dorsad and towards the right, and 

 continuing its course for a short distance, again turns dorsad, anteriad, 



