38 CONCHOLOGIA CESTRICA. 
Z. levigatus, Prr. 
Helix levigata, Pfr., Mon. Hel. Viv., I, 1848. 
Z. teoiganis. Shell globosely depressed, thin, green- _ 
ish horn color; whorls 5, closely striate 
above, smooth, and shining, beneath ; 
last whorl rapidly expanding; aperture 
rounded-lunular; lip simple, much thick- 
ened, within the base, and slightly re- 
flected, around a moderate umbilicus. 
H. 9, W. 18, mill. 
Station, mountains. Sunbury, Penn- 
sylvania. 

Z. inornatus, SAY. 
i Helix inornata, Say, Jour. Acad. Phila. F. 
Z. inornatus. 
[Bee Sth 182%: 
Shell much depressed, smooth, shining, 
pale yellow; whorls 5, flattened above; 
aperture transverse; lip thin, acute, with an 
internal, white, deposit; umbilicus small, 
deep, HG, W. 16) mall: 
Station, in woods. Lancaster County, 

Pennsylvania. 
Z. subplanus, BINN. 
Helix subplana, Binn., Bost. Jour. Nat. 
Z. a Hist., Wy. 1842. 
Shell small, planulate, above, and be- 
neath, greenish-brown, shining; whorls 
5%, fine striate, near the apex; aperture 
transverse; lip simple; umbilicus small, 
round, and deep. H. 6, W. 18, mill. 
Station, mountains. Western Pennsyl- 
vania. 

