472 FRANK E, BEDDARD. 
number of germinal cells, which probably serve for the 
nutrition of the ovum. My specimens were not sufficiently 
well preserved to enable me to make out how far there is an 
actual contact between the protoplasm of the ovum and of the 
nutritive cells. 
There are four pairs of spermathece occupying segments 
v—vit1; each is furnished with a single supplementary pouch 
of small size; this was conspicuous by reason of its yellow 
colour, and, as in P. sumatrana, was crowded with sper- 
matozoa. ; 
The septum to which the egg-sacs are attached is one of the 
specially thickened septa, of which there are six dividing seg- 
ments, vii—xv. The egg-sacs are attached close to the ceso- 
phagus, and where the cesophagus perforates the septum there is 
a space left, through which the egg-sac is prolonged, opening 
into the interior of the thirteenth segment and coming into very 
close relations with the funnel of the oviduct; the passage of ova 
into the egg-sac is facilitated by this, and by the fact that the 
two thick mesenteries which bound segment x1 are closely 
approximated, so that the actual cavity of the segment is much 
reduced. The part of the egg-sac nearest to its attachment 
forms a spacious cavity, undivided by trabeculz. I have noticed 
in this part masses of ovarian tissue containing germinal cells 
and eggs in all stages of development. ‘This fact appears to 
be contrary to the opinion advanced above, that the ovary 
of segment xtv in Eudrilus is really an ovary; but the egg- 
sacs of Pericheta contained only very small fragments of 
ovarian tissue, besides the developing ova, while the organ in 
Eudrilus was quite full of germinal cells in all stages of de- 
velopment. 
Nervous System. 
In figs. 2, 10 are illustrated the way in which the nerves 
arising from the ganglia are distributed to the body wall in 
Pericheta intermedia and in P. aspergillum. 
In both species, as Vejdovsky has mentioned for Dendro- 
beena (39, p. 85), the nerve courses in the interior of the body 
