180 CONTRIBUTIONS 
folds are only four in number, and are placed near to the 
base. 
The genus JWarginella does not seem to have been ob- 
served in a fossil state in Great Britain. Seventeen 
species are given in M. Deshayes’s Tables, nine of these 
are from Paris. From the Tertiary of Maryland Mr Con- 
rad has described one species, the denticulata. Professor 
Vanuxem presented me some years since with a specimen 
from Charleston, 8. C., taken from a bed of very recent 
Formation, (newer Pliocene Period,)—he did not deter- 
mine its species. I suspect it to be analagous with an 
existing species of the West Indies. 
FAMILY CONVOLUTA. 
GENUS ANOLAX.* = Roissy. 
A. gigantea. Plate 6. Fig. 193. 
Description. Shell ovato-elliptical, smooth ; substance 
of the shell thick ; suture scarcely visible ; spire conical, 
acute at the apex ; whorls four, flattened above ; columella 
smooth ; mouth ovate, three fifths the length of the shell, 
largely emarginate below and slightly so above ; inner lip 
id © 
* Ancillaria (Lamarck). I use the name of.4nolax on the authority 
of M. Brogniart. See Terrains du Vicentin, p. 63. 
Saas 
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