oe, 2 
5 
thought by 
— a 
376  Binney’s Monograph of the Helices 
ing nearly a continuous circle ; umbilicus large, 
| eitis: all the volutions. 
Extreme transverse diameter one tenth of an inch. 
—GzosenaPHicanL Disrrisurion. Inhabits Vermont 
and Massachusetts, is rather common in the neigh- 
bourhood of Boston. It has also been noticed in 
Ohio, and on the banks of the Missouri River as high 
as Council Bluffs... 
Remarks. This shell, described by Mr. Say as 
Hzrix minita, is undoubtedly identical with HELIX . 
pulchélla, Miuier ; for, although it is never supplied . 
with raised striæ or parallel ribs on the outer whorl, 
as is sometimes the case with that species, yet it 
agrees with it precisely in all other particulars ; and 
it is be observed, that this character. is by. ne 
means constant in the foreign shell. Though very 
minute, it is a beautiful species, and its form, which 
is seen to most advantage by the aid of a magnifying 
glass, resembles very much that of CycLosroma vól- 
vulus. It is commonly found under stones. 
Europe, but 1 am of opinion that it is a native 
species. It does not seem possible, that so small an 
animal, if naturalized near the sea-shore since the 
arrival of Europeans, should have been able to pene- 
trate to the remote points in the interior of the con- 
tinent where it is now found. TR 
