W. Nicoll 
347 
fhe anterior part of the body they are somewhat dorsal in position but 
on passing into the posterior part they become ventral. 
The transversely oval ovary measures 0'20 x 0T4 mm. and is situated 
exactly at the junction of the anterior and posterior parts of the body. 
The testes lie a short distance behind the ovary ; they are large and 
broad and stretch right across the whole breadth of the body. They 
are almost contiguous with each other and their diameter in the long 
axis of the body is 044 mm. The large shell-gland lies between the 
testes and dorsal to them. There is no receptaculum seminis but the 
initial part of the uterus, which is highly convoluted, is packed full of 
sperms. A long convoluted Laurer’s canal is present. 
The yolk glands fill up a large portion of the anterior part of the 
body, extending into the roiled edges almost to their margin. Their 
anterior limit is the intestinal bifurcation. Passing into the posterior 
part of the body they withdraw from the lateral fields and are entirely 
median. Behind the testes they again spread out to the sides of the 
body, separating as they do so and leaving a clear space at the tail. 
The uterus fills up the median field of the posterior part of the body 
and there are occasionally a few eggs in the anterior part as well. 
There are usually about 20 eggs which measure 01-0 102 x 0‘057- 
0'066 mm. The vagina is thick walled and considerably twisted. 
The bursa copulatrix, situated at the posterior end of the body, 
opens by a wide terminal aperture which is directed obliquely towards 
the dorsal surface. Through the aperture projects the comparatively 
large genital papilla. The large highly convoluted vesicula semioalis 
lies immediately behind the posterior testis. There is a wide and fairly 
long ductus. 
Genus Strigea Abildgaard. 
Strigea promiscua n. sp. 
Numerous specimens of this form were obtained from the intestine 
of a spotted owl (Ninox maculata ) and of a boobook (A. boobook). It is 
of moderate size, measuring 2‘3-3'5 mm. in length. The maximum 
breadth of the posterior part is as great as, usually greater than, the 
breadth of the anterior part, and is about a f of the length. The 
anterior portion comprises about | of the total length, and it is almost 
ovoid in shape. The posterior portion is more cylindrical. 
The oral sucker has a diameter of 047 mm. and is situated on the 
pointed anterior margin of the body. The pharynx is contiguous with 
