Y 4 
362 Binney’s Monograph of the Helices 
forests with other species, but more commonly in 
hill-side pastures, under flat stones, a situation where 
other species rarely occur. Two individuals are 
commonly found together. The hairy projections of 
the epidermis are not distinct on young shells, but are 
often wanting at every stage of growth. The ob- 
lique striz are so fine as hardly to be visible, and in 
some cases the shell appears to be glabrous. Very 
beautiful specimens, about one-fourth of an inch in 
diameter, with a dark, shining epidermis, oecur in 
Ohio. They are more globular, and as the same 
number of volutions are contained in half the space, 
they appear to have a larger number of whorls than 
the northern specimens ; but I do not see that they 
differ, essentially, in any respect. Great disparity of 
size is not uncommon in this genus. It is this varie- 
ty which Dr. Ward has named Hetrx Leaii. Varia- 
tions from the common form are rare. This species 
might, by reason of its open umbilicus, be placed in 
the next subdivision of the section ; but it is so near- 
ly allied to the succeeding species, that it is thought 
best not to separate them. Férussac has applied the 
specific name mónodon to Hrix wnidentata, Drapar- 
NauD; but as Rackett’s description appeared a year 
bufon Férussac’s synopsis, the latter could not right- 
fully appropriate this name, and it should be retained 
for our speia to which it was first applied. ` 
