460 Mr. W.H. Benson’s Conchological Notices. 
Argyreia and of an Ipomea (on which it banqueted voraciously, and 
which it could not have met with in its natural haunts,) it became 
greenish. When the excrement is emitted the head is withdrawn into 
the shell, the orifice in the mantle being exposed, whence the excre- 
ment falls over the foot, and the animal coming out immediately, it is 
passed by the action of the muscles under the sole to the posterior ex- 
tremity, where it is finally quitted. 
The corrugations of the upper part of the foot are parallel to each 
other and elegantly disposed; near the base they are discontinued, and are 
bounded by an impressed line and a ridge parallel with the edge of the 
sole. The motion of the heart is distinctly visible in the pericardium 
while the animal is crawling. The antrum penis is situated nearer to 
the head than in Stenopus cruentatus, forming an equilateral triangle 
with the bases of the upper and lower tentacula on the right side of the 
neck: the generative organ is retort-shaped and hyaline. The animal is 
hermaphrodite and may be found in reciprocal copulation like the snail. 
The pulmonary cavity occupies about half the last whorl when the ani- 
mal is in motion, and the ramifying vessels of its coat are visible through 
the shell; beyond it lies what appears tu be the liver, of a dark brown 
colour, lengthened out towards the spire. ‘The tumid part of the supe- 
rior tentacula is elongate, not globular, as in Helix aspersa, &c. 
Though the dead specimens of the shell are not unfrequent in uncul- 
tivated places of the Gangetic plain, from Calcutta to Cawnpore, I 
sought in vain during six years for live specimens until I discovered six 
congregated together on the prone face of a projecting rock on the summit 
of the great pile of Syenitic boulders at Banda in Bundelkhund, where 
they were protected by a screen of verdure which secured a damp atmo- 
sphere within. This was in the rainy season, and the animals were alert 
and copulating. Isubsequently received a specimen from the Hill Fort 
of Callinger, and I afterwards discovered a collection of them laid up in 
their dry-season quarters, and protected by their false opercula, in the 
crevices of ruinous masonry in the old fort at Rigmahal on the Ganges. 
In 1832 I brought to England specimens of these snails, some of 
which continued alive from December 1831, when I took them, until 
