17 
tooth prominent and acute. The oesophagus is rather thin and of 
about equal width throughout the greater part of its length. At 
its base it forms an oval, muscular bulb. No valvular apparatus 
is found in this bulb, as the textfigure 1 1 seeminglv suggests. 
The nerve ring is situated somewhat cephalad to the middle of the 
oesophagus; it is rather 
indistinct and is not seen 
in the figure. 
The vulva is found 
somewhat in front of 
the middle of the body. 
As far as I have been 
able to ascertain, some 
minute vaginal giands 
are present. The ovar¬ 
ies are symmetrical and 
reflexed. The spicules 
are curved and rather 
thick in their proximal 
end, where they are pro- 
vided with a little knob. 
They are tapering rath¬ 
er quickly towards the 
middle, and their distal 
half is rather thin (PI. 
I, fig. 6). Accessory 
pieces present, the num- 
ber of which I have 
not been able to ascer¬ 
tain. Their distal part 
is forming a sheath; 
ventrally two apophyses 
with truncate ends are 
seen. Dorsally two others 
with acute tip and rath¬ 
er long. There are no 
Fig. 11. Spilopliora amokuræ. preanal papillæ. 
Vidensk. Medd. fra Dansk naturh. Foren. Bd. 73. 
