PARASITES FROM THE SOCIETY’S GARDENS. 147 
7. LyPEROSOMUM DIREPTUM, sp.n. (PI. III. fig. 7.) 
Three fragments of this species were obtained from the liver 
' of a Crested Curassow (Crax alector). From these it was possible 
to get a fairly accurate idea of the whole animal. It is about 
9 mm. long and about ‘9 mm. broad at its broadest part, which 1s 
just behind the ventral sucker. The neck narrows rather 
abruptly, but the posterior part of the body gradually narrows to 
an acutely pointed tail. Ata distance of | mm. from the tip of 
the tail the breadth is less than half what it is behind the ventral 
sucker. There are no cuticular spines. 
The globular oral sucker measures °35 x °39 mm., the ventral 
sucker °46 x °42 mm., and the latter is 1-03 mm. from the anterior 
end. In one fragment belonging to a specimen apparently well 
over 10 mm. in length, the ventral sucker had a diameter of 
54 mm.and the maximnm breadth of the body was 1:1 mm. 
The pharynx is contiguous with the oral sucker, and measures 
-17x:14mm. There is practically no cesophagus, the intestinal 
diverticula branching out directly from the pharynx. The diver- 
ticula terminate a considerable distance from the tip of the tail, 
but the ends are obscured by the uterus, and could not be made 
out. 
The genital aperture lies immediately behind the pharynx. 
The small slender cirrus-pouch, *3 mm. in length, is slightly 
curved, and does not reach the ventral sucker. The testes are 
close behind the ventral sucker, the left being in advance, but 
only by the distance of its own diameter, so that the posterior 
border of one is on the same level as the anterior border of the 
other. They are almost globular, and their diameter varies from 
"24 mm. to °31 mm. 
The globular ovary is separated from the posterior testis by 
a space of 6 mm. It lies somewhat to the right side, and is 
rather larger than the testis, having a diameter of -34—41 mm. 
Behind it lies a small globular receptaculum seminis. The yolk- 
glands are much more extensive than in the preceding species. 
They reach from the level of the posterior testis to halfway 
between the ovary and the tip of the tail. They are more 
extensive on one side than on the other. The uterus is very 
voluminous and highly convoluted, but the convolutions are not 
quite so regularly disposed as in Z. seitulum. The very numerous 
eggs measure *025—028 x ‘019-021 mm. 
8. BRACHYCG@LIUM OBESUM, sp. n. (PI. III. fig. 8.) 
A few specimens of this species were obtained from the intestine 
of a Summer Snake (Contia estiva), which died in the Gardens 
on July 2nd, 1911.. They were all, unfortunately, in a very 
contracted state, and it was only with some difficulty that their 
internal anatomy could be made out. At first sight they appeared 
to be identical with B. salamandre, but their exceedingly small 
size-and the fact that even the smallest was.fully, mature, raised 
ets io 
