32 
Trematodes of North Queensland 
It contains a large vesicula seminalis, a long pars prostatica and a short 
cirrus which is thickly set with short straight delicate spines totally 
difierent from those on the external surface of the body. 
The vaginal sac is also elongated, being about two-thirds of the 
length of the cirrus-pouch. It is divided into a proximal and a distal 
part at the point where the uterus enters it, namely about one-third 
of its length from the posterior end. It is thick-walled but no trace 
of spines could be observed in it. 
The ovary lies near the posterior end of the cirrus-pouch on its right 
side and extends some distance beyond the pouch. It is oval with its 
long axis oblique and measures 0-29 x 0-21 mm. Immediately behind 
it lies the single sub-globular testis, which measures 0-41 x 0-36 mm. 
It is approximately median in position. The post-testicular space 
measures exactly 1 mm. 
Along the margins of the body in the region of the ovary and testes 
lie the yolk glands, which are arranged in an irregular row from the level 
of the anterior border of the ovary to the posterior border of the testis. 
There are about eight moderately large follicles on each side. 
There is no receptaculum seminis. The uterus fills the greater part 
of the post-testicular space and overlaps the posterior and left borders 
of the testis to a considerable extent. It passes up along the left border 
of the ovary and cirrus-pouch to enter the vaginal sac on its inner side. 
The numerous ova are thin-shelled and measure 0-022 x 0-011-0-012 mm. 
It is with some hesitation that this species is included in the genus 
Genolojxi, for although it is closely related to it yet there are a few 
important features of divergence. In the first place the body shape is 
entirely different. The presence of an elongated prepharynx, which is 
usually absent in the Monorchiidae, is also of some importance. The 
inverted ratio of the suckers may also be noted, while the configuration 
and position of the yolk glands are different. The relative position of 
the yolk glands, however, with regard to the ovary remains practically 
the same. 
Genus Sterrhurus Looss. 
Sterrhurus brevicirrus n. sp. 
(Plate IV, fig. 6.) 
A single specimen of this parasite was taken from the intestine of 
a grunter (Pomadasis hasta). It displays all the typical features of the 
genus Sterrhurus and it is difficult to differentiate it from the already 
known European forms. 
