60 Mr. C. R. Narayan Rao on some 
Apparently they have no ductules leading them to the 
outside world, for none can be made out in sections. In 
respect of microscopic structure, their excessively thin wall 
is composed of cubical large cells and a few muscle-fibres 
circularly disposed. ‘The vesicles were empty. They must 
be degenerate spermathece, unusually placed far behind. 
The male organs comprise four pairs of large testicular 
sacs in segments 9-12. Each vesicle is a greatly lobulated, 
pyriform, spherical or oval organ, the anterior two are 
attached to the hearts in whose loop they lie just in front of 
septa 9/10 and 10/11, and the hinder two are attached to 
the posterior face of septa 10/11 and 11/12. I have noticed, 
in about three out of eight examples dissected, a fifth pair 
of seminal vesicles attached to the anterior surface of 
septum 11/12. Seminal funnels are large, placed in seg- 
ments 9 and 10-11 attached to the sacs. Testes are small 
brush-like organs, mostly free, attached to about middle of 
the anterior surface of septa 9/10 and 10/11. There are no 
prostates. The male aperture could be made out only in 
sectional preparations in the intersegmental furrow 21/22 
nearer to seta-line 0. 
There is a single pair of large spermathec in segment 14. 
Each is a stalked pyriform organ without diverticula. The 
duct enters the posterior face of septum 13/14. In addition, 
there may be a variable number of spermathecze on each 
side, behind segment 14 in the seta-lines a, >, and ¢ close to 
the posterior surface of septa 14/15, 15/16, 16/17. They 
are sessile, almost buried in the thickness of the body-wall. 
Each of these structures differs from the ampulla referred 
to in connection with the nepbridia by the muscle-fibres 
forming distinct spiral bands. In vertical sections of the 
body-wall in this region the apertures are made out. 
Asymmetrically situated behind segment 16 are occasional 
spermathecal vesicles, either only on one or both sides. 
The ovary and ovisacs are large, more or less spherical, 
soft, lobulated bodies, in segment 13 attached to the pos- 
terior surface of septum 12/13. No oviduct was made out. 
Female pore on segment 13 within the seta-space aa. 
Locality —Sandy banks of Rivers Harangi, Madapur 
(Coorg); Cauvery, Fraserpett (Coorg), and Sheravathy, 
Shimoga (Mysore). 
Type-specimen in the British Museum. 
Syntypes in the Hamburg and Indian Museums. 
Remarks.—This species and the three others described in 
this paper do not in the living condition possess a four- 
cornered body behind segments 12 or 13, but nearly a flat 
