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7. Descriptions or Srx New Srecies or LAND SHELLS, FROM 
THE IsLAND oF Epon, MarsHatu’s Group, IN THE CoL- 
LECTION oF H. Cuming. By W. Harper Pease, 
Genus LAMELLINA, Pease. 
Shell imperforate ; whorls smooth ; columella twisted, and furnished 
with a lamelliform anterior plait and a spiral lamella on the colu- 
mellar lip ; last whorl with internal longitudinal lamelle ; outer lip 
simple, acute. 
LAMELLINA SERRATA. 
Shell minute, thin, lucid, fragile ; conically ovate; whorls five, 
convex ; aperture small, ovate, less than one-half the length of the 
shell ; a spiral lamella on the centre of the columellar lip and one at 
the base ; last whorl furnished with three longitudinal lamelle, ex- 
tending its whole length and disposed at equal distances from the 
outer lip, at about one-sixth of the circumference of the whorl apart ; 
edges of the lamellz serrated. 
TORNATELLINA NITIDA. 
Shell small, ovately turreted, thin, fragile, of a light horn-colour ; 
whorls six, rounded, last whorl flattened and slightly depressed 
around the middle; aperture small, ovate, less than one-half the 
_ length of shell; outer lip simple, acute, slightly contracted at the 
middle ; plait on inner lip prominent ; base of the columella slightly 
reflected over the umbilical region and furnished with one or two 
plaits or tooth-like projections. 
HypDROCENA FRAGILIS. 
Shell ovately conical, thin, light, turreted, perforate, of a light 
horn-colour, encircled by narrow reddish-brown bands which are 
sometimes interrupted, or ornamented with longitudinal flammules 
or blotches of the same colour ; whorls six or seven, convex, last 
whorl slightly angulated at the middle ; aperture oval ; outer lip thin, 
simple ; umbilicus entering by a grooved channel, over which the 
inner lip is slightly reflected. 
HELIX STRIOLATA. . 
Shell small, orbicular, thin, fragile, imperforate ; spire slightly ele- 
vated, convex beneath, and ornamented with minute revolving striz ; 
whorls five, rounded, slightly angulated at the periphery ; aperture 
lunate ; light horn-colour. 
VERTIGO NITENS. 
Shell cylindrically oval, thin, pellucid, imperforate, apex obtuse; 
minutely striated, striz longitudinal and slightly oblique ; whorls 
five, rounded ; sutures impressed ; aperture subquadrate, rounded at 
the corners ; lip slightly expanded and reflexed, furnished internally 
with three teeth, about equal distances apart, one of larger size, and 
bipartite on centre of columella, and one at the base, Colour white. 
