314 THE LAND SNAILS 
_lip simple or sharp, and the teeth are claw-shaped ; the 
jaw being devoid of ribs, having, however, a central pro- 
jection, as shown in Fig. 19,—( jaw of Helix inornata.) 
VITRINA LIMPIDA Gould. (Fig. 20.) Shell globular, 
very thin and fragile, transparent and shining. Whorls 
Fig. 19, two to three, the last, or body whorl, very 
large and expanded; no umbilicus; diam- 
Fig 2). eter nearly one-fourth of an inch. Animal 
greyish, or nearly black, and large com- 
QB pared to the size of the shell. The mantle 
extends from the aperture of the shell covering the back 
of the animal to the base of the tentacles, a portion ex- 
tending backward covering the spire. The animal is 
always very moist, and appears còvered with water. 
This species is probably carnivorous in its habits, as in 
confinement it has been noticed to feed on dead and even 
live earth-worms, while vegetable food has been rejected. 
It has been found in northern Vermont, in northern 
Maine, and near Portland, Me., quite abundant. Outside 
of the limits of New England this species occurs in the 
North-western Territory, and the northern parts of the 
United States bordering on Canada. It is generally found 
in open ground or low underbrush in damp places. 
HELIX ivornata Say. (Figs.21, 22.) Shell depressed, 
Figs-21,22. yellowish horn-color, smooth and shining- 
Waa Whorls five; lip simple and sharp, the lower 
~Z part reaching to the umbilicus, which is small. 
Within the lip there is a thick, white shelly 
deposit which tends to strengthen the fragile 
aperture. Diameter of shell less than three- 
fourths of an inch. Animal bluish black, disk whitish. 
_ At the termination of the tail there is a gland from which 
the mucus pours freely when the animal is in motion. 
