670 THE LAND SNAILS OF NEW ENGLAND. 
grain! and this tiny shell encloses a pulsating heart, 
a lung, stomach, liver, and all the organs we find in the 
Fig.65. Figo. larger snails. The shell has six teeth 
within the aperture, those on the lower 
portion of the aperture being long 
| ridges running far within the shell. 
' This species is found under decaying 
leaves in woods, and sometimes under 
stones in open pastures. It has a wide distribution in the 
United States, though it is rarely met with on account 
of its exceeding minuteéness. 
VERTIGO stupLEx Gould. (Figs. 67, 68.) The shell 
ee, Fig-68- is quite long and cylindrical, 
<> having five whorls: The aper- 
wen ture is entirely devoid of teeth, 
we and has a sharp lip. Length 
i) È C] 7s of an inch. Found in all the 
: New England States, New York, 
and some of the Western States. 
VERTIGO DECORA Gould. Mr. L. L. Thaxter has found 
this species at Ascutney, Vermont. We learned this fact 
too late to prepare a figure of it. We may briefly state 
that it is something like V. Gouldii, though twice the. 
size of that species, and darker colored. It was first dis- 
covered in the region of Lake Superior, and one specimen 
has been identified from Great Slave Lake. 
fo a 
= The following group, though air-breathing, are am- 
ue phibious in their habits. The animal has only two ten- 
_ tacles, with no power to draw them within the head, as in 
oa those above described. The eyes, instead of being at the 
: tips of these tentacles, are at the base. 
_ CARYCHIUM EXIGUUM Say (Fig. 69) has an elongated 
