320 DESCRIPTIONS OF EARTHWORMS. 
of their genital organs. The spermatheca (fig. 3) consists 
of a large globular pouch and a long diverticulum, sho- 
wing several windings like a corkscrew ; however often this 
diverticulum is pourly developed, extending scarcely till 
the half of the pouch and is wound not at all or hardly 
so (fig. 3a). In four specimens, which I examined, both 
spermathecae of the dextral side presented such a faintly 
developed diverticulum; however it was also observed at 
the left side. 
The prostata also shows a divergency from the usual 
structure; it is a small, faintly lobed gland, of a rudi- 
mentary appearance, extending forward and backward not 
much beyond its muscular duct. I thought first to have to 
do with a species, which perhaps was allied with the japanese 
Perichaetae'), described by Beddard, which have the pro- 
stata entirely wanting; however in one of the four spe- 
cimens, which I examined, I found at the ventral side a 
well-developed prostata, extending as usually over three 
segments. It may be presumed therefore, that the other 
worms were not in a state of sexual maturity. 
In the other parts of its organisation no peculiarities 
could be observed; the eight and ninth septa are absent, 
those of segments XI, XII and XIII are rather thick. 
A bell-shaped gizzard occupies segments IX and X; a 
long, digitiform coecum lies in segment XXVI and extends 
forward over five segments. 
There are two pairs of tongue-shaped vesiculae semina- 
les in segments XI and XII, connected with each other 
and including the ciliated funnels. A large fan-shaped ovary 
is attached at the anterior septum of segment XIII. 
The specimens could not be referred to one of the Ma- 
layan Perichaeta-species already known, though three spe- 
cies from this region are described, which possess also two 
pairs of spermathecae with a long, wound diverticulum 
i.e. P. musica Horst (Java), P. longa Mich. (Sumatra) and 
1) Zoolog. Jahrbücher, Systematik, Bd. VI, 1893, p. 755. 
Notes from the Leyden Museum, Vol. XV. 
