DESCRIPTION OF THE SPECIES FIGURED. 
Nerin#za oouitica, Witc., n. sp. Pl. I, fig. 1, la. 
Shell conico-cylindrical, whorls numerous, their height equal 
to four-fifths of the diameter, contracting rapidly towards the 
apex, slightly thickened at the suture, apex acute, aperture 
lengthened and narrow, channel elongated and curved, colu- 
mella solid, with one fold below the middle of the volution, 
one on the wall, and one on the posterior wall, height of 
_ perfect specimen 3} inches, spiral angle 12°. 
Locality.—Swift’s Hill, near Stroud, in marly limestone, 
below the Oolite Marl. 
Nerinza conica, Witc., n. sp. Plate I, fig. 2. 
Shell sub-conical, whorls broad, their height not exceeding 
one half of the diameter, slightly projecting at the suture, 
apex acute, spiral angle 18°. 
The examples in my possession are unfortunately imperfect 
at the aperture, and are in a crystalline condition, the character 
of the aperture and of the internal structure cannot therefore 
be ascertained, but the sub-conical figure and low projecting 
whorls will sufficiently distinguish the species. 
Locality.—Swift’s Hill, near Stroud, in the marly limestone 
bed. 
Nerina Oppetensis, Lyc. PI. I, fig. 3, 8a. 
Lycrtr has described this species in “The Geology of the 
Cotteswold Hills,” p. 123, and a fragment is figured on Pl. I, 
(fig. 6,) of that work, with a section of the interior. I think 
the interior of the specimen figured was much worn, hence the 
