8 MOLLUSCA. 
usculis ; ultimo amplo, declivo ; apice sub-central ; sutura bene im- 
pressa: apertura transversa, elliptica ; labro plerumque membra- 
naceo. 
Anima of an ochreous brown colour, with a tinge of green towards 
the foot, between which and the body is a slight furrow. ‘The mantle, 
which for the most part envelopes the shell, is mottled with black, and 
covered with longitudinal wrinkles, intersected by fine, transverse 
lines, and appears covered with minute granules when the animal is 
contracted. The rest of the body is covered with minute, interrupted, 
longitudinal lines, of a darker colour, assuming on the back and foot 
the appearance of fine squamiform plaits. Cervical tentacles long and 
slender ; oral ones about half as long, and like them dark slate-coloured ; 
on the back of the neck is a faint double groove, with a narrow white 
streak on each side. The foot is compressed and subcarinated poste- 
riorly, and has a slight canal extending from the shell nearly to the 
extremity. Respiratory orifice very large, near the upper and posterior 
portion of the mantle ; mucus-pore very near the extremity of the foot, 
on the upper side, quite small, but secreting considerable thin mucus, 
which gives the whole foot a glossy appearance. 
It differs from the animal of V. Lamarckw by the truncation of the 
corselet anteriorly, and by having the markings on the side of the 
neck longitudinal instead of oblique. 
Suett of a dull yellowish-green colour; apex of the spire sub-cen- 
tral, with three volutions, the last of which is disproportionately large, 
depressed, discoidal, the sutures very indistinct. Aperture sigareti- 
form; columella short, distinct, slightly reflected, blending inferiorly 
with the external lip, which is thin and membranous, doubling to the 
touch like moist paper; during life the lip has a clear, hyaline ap- 
pearance, but after death it becomes opaque, and chalky white within. 
There is a slight umbilical indentation. 
Diameter about half an inch; axis about one-third as much. 
Found by Mr. Couthouy at Roche de Empejia, Island of Madeira, 
at a height of 4200 feet. 
This species differs from V. Lamarckw in having more whorls to 
the shell. The animal is still more decidedly different. [s. Pp. c.] 
