38 
atozoids swarmed. In the hermaphrodite gland we have seen both 
spermatozoids and ova in different stages of development, but at 
different times.” 
KowALEWSKY (18) notices that both the ovary and two tubular 
glands which he regards as testes, communicate with the muscular 
eloacal cavity. The ovary is paired and situated above the dorsal 
vessel. The testes just mentioned originate as a single tube below 
the intestine about half way along the length of the body. It very 
soon divides into two, then turns upwards towards the dorsum 
and opens out into the cloaca. 
This is all that has hitherto been published on the subject of 
the genital apparatus of Neomenia. Concerning the same in Chae- 
toderma we have the facts described in a very different way by 
v. GRAFF and Hansen. v. GRAFF comes to the conclusion (5) - 
that the germinal vesicle of the ova takes its origin in the connec- 
tive tissue of tbe anterior part of the body, whereas the yolk is 
formed in the posterior body-region, also in the interstices of the 
connective tissue. Of the way in which the germinal vesicles and 
the yolk elements finally come together and travel outwards as ova 
v. GRAFF gives the following (hypothetical) description: The germ- 
inal vesieles, when set free, combine in the posterior body-region 
with several yolk-cells. They then pass dorsally into the uterus, 
which here begins as a narrow duct: they continue to grow and ac- 
cumulate in the enlarged part. From thence they pass when quite 
ripe one by one into the attenuated oviduct, which opens to the 
exterior in the upper wall of the pharynx, close to the chitinous tooth. 
In the posterior extremity of the body v. GRAFF describes two 
branchial sacs inwardly coated with a single layer of long cells 
with distinet round nuclei. We shall presently see that these sacs 
probably belong to the genital apparatus. 
wegian text into German (11, p. 148) of which an English extract has after- 
wards been given (12), a serious omission has occured. A line appears to 
have been overlooked, and as the german translation will have it, the cream- 
like fluid and spermatozoids are present not in the small vesicle but in 
the mucus-glands. 
