A450 WILLIAM NiCOLL. 
nearer the bifurcation. Linton was somewhat doubtful of the 
identity of this species and hesitated to assign to it a specific 
name. JI therefore propose for it the name Lebouria 
obducta n. sp., and add the following short description. 
Length about ‘8 mm.; breadth half the length; oral 
sucker ‘12 mm.; ventral sucker oval, a little in front of the 
middle of the body, diameter *17 mm. (this is probably the 
short diameter, for in Linton’s figures the transverse dia- 
meter is always at least twice that of the oral sucker). 
Pharynx, length ‘06 mm. ; cesophagus short ; genital aperture 
a little behind intestinal bifurcation. Testes much larger 
than those of Lebouria idonea, irregularly shaped, in pos- 
terior third of body. Cirrus-pouch short, extending a little 
beyond the anterior border of the ventral sucker. Ovary 
transversely oval, on a level with anterior testis or a little in 
front, on right side. Yolk-glands only reaching intestinal 
bifurcation, not uniting in front but filling up space behind 
testes. Ova few (five to twenty) measuring ‘063 by ‘035 mm. 
From a comparison of these two species the genus 
Lebouria may be defined as follows: 
Small ALLOcREADIIN® with broad, flat, oval body. Ventral 
sucker oval, larger than oral sucker, situated about the 
middle of the body or a little in front of it. Cisophagus 
short, intestinal bifurcation midway between suckers. Hxcre- 
tory vesicle simple, short. Genital aperture median or 
slightly displaced, near the intestinal bifurcation. Testes of 
irregular shape, oblique or tandem, in the middle of the 
post-acetabular region, Cirrus-pouch short, not reaching the 
middle of the ventral sucker, containing a convoluted 
vesicula seminalis and ductus ejaculatorius, but lacking a 
well-differentiated pars prostatica, although prostatic cells 
are present. Ovary rounded, on the right side, on a level 
with anterior testis or immediately in front of it. Recep- 
taculum seminis and Laurer’s canal present. Yolk-glands 
extending in front of ventral sucker. Uterus short; ova few, 
thin-shelled, with small protuberance at the anopercular pole, 
measuring about ‘07 by ‘04 mm. 
