_ inhabiting the United States. 413 
Remarks. This species varies in the greater or 
less prominence of the spire, which sometimes is 
considerably depressed, and at other times rises into 
a sub-conical shape. The apex is, however, always 
obtuse, so that the young shells might be supposed 
to belong to another species, so different are they 
in shape from the mature shell. When fully grown, 
there are seven whorls complete, but usually the 
number does not: much exceed six. The epidermis 
is commonly shining, and the oblique stri: are nu- 
merous and distinct. The young shells are pellucid. 
The base of the shell within the aperture is thick- 
ened with a very white callus, which is seen from 
without. ‘The umbilicus is very small, and some- 
times quite closed. The lip, at its junction with the 
base of the shell is slightly.reflected. Herıx War- 
diàna of Lea, is undoubtedly the young of this species. 
The distinction in the animal, noticed by Dr. Ward, 
was afterwards ascertained by him not to exist. 
Mr. Say’s name should be retained for this shell, 
as his description was published several months 
before Férussac’s name appeared, and several years 
in advance of his figure. No other description than 
Say’s has hitherto been published. 
33. HELIX INTERTEXTA. 
Plate XX. fig. 2. 
s. sub-pyramidata, perforata, corned; anfractibus striatis, 
atriis AEA tissimis impressis, volventibus, intertextis 
anfra timo z albida, rufo-marginatá, cincto ; uw 
pli intus incrassato. - 
