LAND SNAILS. We7 
Faminy AURICULIDA. 
This section of the Inoperculata contains only 
two British genera: Carychium and Conovulus. 
The former is truly terrestrial, whilst the Cono- 
vuli live on the mud at the mouths of rivers, or 
in the sea, and were long regarded as marine 
animals, but they are truly pulmoniferous. 
The shell of Carychium is minute and ovate, 
with an oblong, three-toothed aperture; the 
shell of Conovulus is also ovate, but the pillar 
presents two or three plaits. 
Genus CARYCHIUM. 
,CarycHIUM MINIMUM — (the Minute Sedge 
Shell) (Pl. XI., fig. 135).—This is an excedingly 
beautiful creature, and the smallest of British 
snails ; it is yellowish-white, provided with two 
conspicuous black eyes, near together at the 
. base, and behind the tentacles. The dental 
formula is 242, | 
The shell is very minute, scarcely one-tenth of 
an inch long, oblong, white, shining, and finely 
striated transversely ; there are five whorls; the 
aperture is oval, with two teeth on the pillar, the 
margin is thickened and reflected, and presents 
a tooth projecting inwards in the middle of the 
outer lip. 
, N 
