inhabiting the United. States. 385 
Synonyms AND REFERENCES. 
Polygyra auriculàta, Say. Nich. Encyc, Am. ed., 
Vol. IV. Journ. A. N. S. Philad., Y. 277. 
Polygyra avàra, Say. Nich. Encyc., Am. edit., IV. 
Journ. A. N. Na Philad., Y. 277. 
Helix avàra, Férussac. Hist. ti Moll. Pl Z5 
s fig. 2. 
Helix auriculàta, Férussac. Hist. des Moll. Pl. 
L., figs. 3, 4. 
Lamarck. Anim. sans Vert., 2d edit., VIII. 
Helix Sayii, Wood. Index Test. Sup. PUUWEL 
Mes prd. c sem 
DESCRIPTION. 
- Animal. Longer than the ith of the shell, 
acute behind, above granulated and blackish, beneath 
and each side white.* — : 
Shell. Depressed, very slightly convex above, 
below convex; epidermis brownish horn-color ; 
whorls more than five, a little rounded, crossed by 
numerous distinct, equidistant, oblique stris, the 
upper part of the last whorl near the mouth is sud- 
denly reflected from the preceding whorl and turned 
outwards, having a sharp carina on its inner edge, 
the lower part is slightly reflected, but attached; 
lip projecting in the upper part, somewhat reflected 
. in the middle, and appressed to the whorl and in- 
* Say, in Nichol ^. T. 3 lia, Americ edition, Vol. IV. 
VOL. IH, — NO. m. A9 
