THE LAND SNAILS OF NEW ENGLAND. 607 
SUCCINEA AVARA Say. (Fig. 47.) The shell of this 
species is smaller than the preceding, being only a quar- 
ter of an inch in length. The spire is quite long, pig 47, 
and the aperture is only half the length of the shell. 
The whorls are three in number, very convex, sep- 
arated by a deep suture. The color is greenish 
or grayish straw. The surface of the shell is usually 
covered with a coating of dirt, accumulated by the fine 
hairs that stud its surface. This character alone is suffi- 
cient to distinguish the species. Common in damp woods. 
Succrnga ovas Gould. (Fig. 48.) Shell very thin, 
pellucid, pale horn-color, polished, elongate. Spire 
short; aperture expanding in front. Length less pjg 4s, 
than half an inch. The shell is quite elastic, and 
so translucent that all the organs are plainly visible, A 
and the pulsations of the heart are distinctly seen. 
The animal is amber-colored, mottled with black dots. 
Inhabiting the Northern and North-eastern States. This 
species appears to be confined to the margin of pools in 
wet grass, and is often found clinging to the leaves of 
aquatic plants in ponds. 
The following species belong to a genus of which there 
are but two species, one belonging to this country, a 
the other to the old world. The two resemble Fig. 
each other very much, and are regarded as the Pe 
same species by many. 
ZUA LUBRICOIDES Stimpson. (Fig. 49.) Shell 
cylindrical, oblong, smooth, and brilliantly pol- 
ished; transparent, smoky horn-color. Whorls 
five or six, rounded. Length 4, of an inch; aperture 
oval; lip thickened; animal bluish-black. The shell 
a E Its usual haunt 
