155 Records of the Indian Museum. [Voru2i; 
(vi) The zntestine forms a S-shaped curve lying partially 
embedded in the substance of the liver on the dorsal aspect. It 
begins on the left lateral aspect of the liver and, taking the 
curve just mentioned, emerges out of its wall from near the 
anterior end to the left. It then passes along the anterior border 
of the liver forwards and outwards to the right, being surrounded 
by a coil of the oviduct in its course, to end in the anus in the 
groove between the foot and the mantle. The portion which 
lies beyond the liver may be conveniently named rectum. 
IV. Reproductive System. 
(i) The hermaphrodite gland is an oval mass—more or less 
flattened from side to side and placed on the right side of the 
anterior end of the liver. The organ is connected to the liver 
by a flat strand of fibrous tissue. The retractor penis muscle 
passes over the outer side of the gland. 
Minute structure-—Under the low power the true glandular 
portion of the body lies in its distal end. It consists of a flattened 
mass o! more or less rounded acini held together by loose con- 
nective tissue. Each acinus gives rise to a duct which unites with 
others to form the oviduct. The oviduct is coiled and looped in 
various ways as it passes on, and then emerges from the glandu- 
lar mass after having received the vas deferens in the same. ‘The 
vas deferens seems to arise from the centre of the glandular mass, 
and passes outwards nearly to its proximal end where it opens 
into the oviduct. 
(ii) The albumen gland forms an elongated mass along the 
upper border of the hermaphrodite gland with which it is insepa- 
rably fused from the distal end. 
Minute structure —Tre gland consists of numerous irregular 
lobules separated somewhat widely from each other by loose 
connective tissue. Each lobule consists of an irregular mass of 
acini held together by a thin layer of connective tissue. ‘The acini 
open together into a short duct which ends in the main duct of 
the gland. The main duct passes along the upper border of the 
hermaphrodite gland and then turns downwards between the 
glandular mass and the coiled mass of oviduct to the lower border, 
where it seems to open into the oviduct. It also receives several 
ducts of lobules scattered along its course. 
(iii) The hermaphrodite duct is a short tube which forms a 
V-shaped loop as it emerges from the glandular mass and coils 
itself round the intestine to pass outwards, downwards and a little 
backwards, where it ends in the external genital aperture placed 
just behind and internal to the anus. 
(iv) The fens is enclosed in a penial sheath, which opens on 
the outer side of the base of the lower tentacles. ‘There is one 
simrothian gland, on the right sideonly. The penial sheath as usual 
gives attachment to a retractor penis muscle. A fine thread-like 
tubule, the flagellum, also opens into the penis, at its distal end. 
