169 
The glands mentioned here are enveloped in a muscular Sae. 
The paired. lateral glands which (fig. 3, 9, 10, 187) are visible in 
their whole length through the skin, arise before and above the 
median sac and thereafter are placed along the side with the ex- 
ception of the hindmost part behind the median glands. This is 
directed to the inner side and often cross that from the other side 
between the anal hill and the hindmost median paired glands (fig. 18). 
The cells of these very spacious glands are evidently glandular ; 
each cell containing a nucleus and globules of secrete. The lumen 
of the gland is filled with these globules. The. accessory glands as 
well as the above named bifurcate organ seem to discharge into 
a flat ,,vestibulum”. The genital opening (pl. V fig. 13) is a trans- 
verse split placed between a foremost (gf) and aåa hindmost (94) 
plate, both movable by thin articulation membranes; the front one 
is longer than the hindmost, which is short but broad. 
The Female Organs (pl. V fig. 7, 8, 9, 10; 11. 
Pl. VI fig. 41, 128% 13). 
The Ovaries etc. I have not been able to understand the 
structure of the ovary nor to find the cells from which the eggs 
arise. Behind, along the sides and above the intestine there is a 
great number of eggs at different stages of development; most of 
them seem to lie between the excretory tubes and to be more developed 
in one side than in the other side. The young eggs are provided 
with a distinct nucleus and nuclear body; between them there seem 
to be bands with small nuclei; the condition of my material has 
not made it possible to investigate the structure of these bands or 
their relation to the formation of the eggs. The protoplasma in the 
eggs gets partly transformed into small yolk balls especially in the 
largest, where only a little of the protoplasma is left unchanged; 
the nucleus is only very little and difficult to discover in the full- 
grown eggs. In sections I have seen narrow tubes with thick walls 
(fig. 134) and small nuclei among the eggs. Similar tubes are also 
found in the males(?). The oviducts (pl. V fig.110; pl. VI fig.11 od) 
