76 The Shell-Collector’s Handbook. 
transverse lines on the body-whorl giving it an angular 
appearance, crossed by numerous longtitudinal striz; 
whorls four ; spire short and acute; aperture ovate ; outer 
lip thin; inner lip reflected, forming a small hollow behind 
it. Length of the largest specimens 6 lines; breadth 4 
lines (= Limnea lineata, Bean. Loudon’s Mag. Nat. Hist. 
vol, vii, p. 493). 
v. succineformis (Jeff.): Shell shaped like a Succinea, 
and very thin; whorls 4; spire small and oblique. (B. C., 
vol. i., p. 106.) 
M. decollatum (Jeff.) : Shell more or less eroded ; spire 
truncate. (B.C., vol.i., p. 106.) 
M. sinistrorsum Jeff): Spire sinistral, rather solid ; 
spiral ridges well pronounced. (B. C., vol. i., p. 106.) 
M. scalariforme (Jeff.): Shell oblong, with deep and 
regular transverse striz ; whorls more or less disjointed; — 
suture very deep. (B. C., vol.i., p. 106.) 
LIMNAA AURICULARIA, LINN. 
SHELL globosely ovate, glossy, semi-transparent, yellowish 
horn-coloured, with deep and irregular lines of growth ; 
whorls four to five, the last one being very much swollen, 
and occupying at least §ths of the shell; spire very short 
and acute ; mouth vastly expanded, roundish-oval, oblique; 
outer lip expanded; inner lip reflected, and forming a 
small umbilical chink behind it; columellar fold strongly 
curved and sharp. Animal dull greenish-yellow, mottled 
with black, and spotted with milk-white, black, and yellow. 
Habitat.—Lakes, ponds, canals, marshes, and sluggish 
rivers. 
v.magna (Colb.): Shell larger; aperture narrower, 
outer margin nearly parallel to the columella, which is 
straight, the upper edge reaching the commencement of 
the spire, which is sharp. Length 32 mill. 
