82 The Shell-Collector’s Handbook. 
v. albida (Jeff.): Shell smaller, milk-white. (B.C., 
vol. 1, p. 116.) 
m. scalariforme (Jeff.): Shell smaller; whorls nearly 
disunited. (B. C., vol. i., p. 116.) 
LIMNZA GLABRA, MULL. 
SHELL an elongated cone, tapering, thin, glossy, with a 
few faintly marked longitudinal striations, horny or 
brownish ; whorls seven to eight; mouth elongate-ovate, 
not above one-third the length of the shell, and with a 
broad internal white rib; umbilical cleft very minute. 
Length of shell 1 inch. Animal dark slaty grey, spotted 
with black. 
Habitat.—Ponds and ditches. ; 
Vv. major (Gassies): Shell much larger. Length 
23 mill. 
v. elongata (Jeff.): Spire more produced, so as to 
alter the relative proportions of length and breadth. 
(B. C., vol. i., p. 118.) 
m. decollatum (Nelson): Spire decollated. 
