20 
Fridtjof 
Nansen. 
[No. 7- 
Length of 
the animal 
in centi- 
metres 
Length of the 
reproductive 
organ or 
membrane 
Length of the" 
posterior 
male portion 
(or sterile 
portion in 
females) of the 
reproductive 
organ 
portion; they are mixed for 
some distance in the boun- 
dary between both portions, 
in such manner that testicular 
follicles (forming a continuation 
of the posteriorly situated 
testes) orxur along the exterior 
free margin of the membrane 
carrying the reproductive ele- 
ments, whilst ova are situated 
more interiorly (vide fig. 6) . 
4. Spent female with (about 
10?) empty ovarial capsules 
5. Hermaphrodite-male with 
testicular follicles occurring 
along the free margin of the 
whole reproductive organ 
(especially developed in the 
posterior portion, 6.7 ctm. in 
length); whilst in it's anterior 
portion (7.4 ctm. in length) 
young ova occur inside the 
testicular follicles, or are mixed 
with them 
6. Female with small spherical 
ova (2 mm. in length), and a 
few spent ovarial capsules. 
One ovum was 5 . 5 mm.in length. 
The posterior (male) portion 
of the reproductive organ is 
still rather prominent and has 
a distinct thick margin, but 
no longer contains sperma- 
tozoa 
31.6 ctm. 
32.0 ctm. 
15.5 ctm. 
16.2 ctm. 
32.4 ctm. 
1 5. 1 ctm. 
(about) 
6.5 ctm. 
5.3 ctm. 
6.7 ctm 
33 ptm. 
15.5 ctm. I 4.8 ctm. 
