146 DR, W. NICOLL ON TREMATODE 
external to the intestinal diverticula, and extend from the 
posterior border of the ventral sucker to the middle of the 
anterior testis. The uterus, which is voluminous, bears a close 
resemblance to that of S. serrata, and the ova measure ‘039-047 x 
°019--020 mm. 
Family DicRoc@LIIpD&#, 
6. LyPEROSOMUM SCITULUM, sp.n. (PI. ITI. fig. 6.) 
Four specimens of this species were taken from the liver of a 
Purple-capped Lory (Lorius domicella). It is a greatly elongated 
form, measuring 6°8-7°2 mm. in length. The breadth is fairly 
uniform, but attains its maximum (‘8 mm.) across the ventral 
sucker. There are no cuticular spines. 
The oral sucker is almost terminal, and has a diameter of 
"45 mm.; the ventral sucker is slightly smaller, °42 mm., and is 
situated 1°33 mm. from the anterior end. The pharynx is con- 
tiguous with the oral sucker, and has a diameter of *14 mm. ; 
the cesophagus is about the same length. The narrow tortuous 
intestinal diverticula extend down the sides of the body to a 
distance of about 2 mm. from the tip of the tail. They are of 
unequal length, sometimes the right, sometimes the left being 
the longer. 
The anterior testis is separated from the ventral sucker by a 
space of 33 mm. The posterior testis lies about the same length 
behind the first, the latter being close against the right intestinal 
diverticulum and the former against the left diverticulum. 
They are oval bodies measuring about 25-33 mm. The space 
between the second testis and the ovary is equal to that between 
the two testes. The ovary is a transversely oval body situated in 
the middle line and measuring ‘21 x ‘24mm. The genital aperture 
lies over the intestinal bifurcation. The cirrus-pouch is fairly 
stout, and extends to the anterior border of the ventral sucker. 
It contains a highly convoluted, voluminous vesicula seminalis 
and a moderately long prostate and ductus. 
The yolk-glands are limited to an area on each side of the 
body about the level of the ovary. They are variable in extent, 
but as a rule their anterior limit is on a level with the second 
testis, while their posterior limit is about half as far again on the 
other side of the ovary. They are usually more extensive on one 
side of the body than on the other. They almost completely 
overlap the intestinal diverticula. The uterus is very highly 
convoluted, the loops being mostly transverse. It fills up almost 
all the posterior part of the body not occupied by the genital 
glands, which it does not overlap. It does, however, overlap the 
intestinal diverticula to a very considerable extent. The eggs 
-are extremely numerous, and measure °029x-019 mm. The 
older ones contain the characteristic miracidium larva. 
