inhabiting the United. States. 419 
species, which has come under my observation, had 
a very peculiar conical protuberance on the superior 
part of the extremity of the foot. 
This shell, which has been long known in this 
country by the name which I have adopted, was 
indicated by name by Férussac, in his Tableau 
Systématique, as HeLIx levigdta, without descrip- 
tion or figure. Mr. Say’s description appeared in 
the “New Harmony Disseminator of Useful Know- 
ledge,” in 1829, but was almost unknown to natural- 
ists until recently republished. Dr. Griffith’s name, 
appended to specimens in the public cabinets of 
Philadelphia several years before having in the mean 
time obtained, it does not NEM to be proper to 
substitute another. 
37. HELIX INORNATA. | ut 
Plate XXI. ag. 3. 
. H. testa pdieskdo depen perforata, luteo-corneà, lerip ni- ni- 
tens; anfractibus quinque; aperturà transversá intus incrassata ; 
simplici tenui, acuto ; basi impresso. 
Synonyms AND REFERENCES. 
Helix inornàta, Say.. Journ, A. N. S. Philad., 
IL. 371. 
DESCRIPTION. 
Animal. Narrow, foot terminating acutely ; dark 
slate-color, glands of the surface not prominent. 
Shell. Depressed; epidermis yellowish horn- 
color, smooth, shining, with very minute striæ, not 
