48 CONCHOLOGIA CESTRICA. 
H. lineata, Say. 
Helix lineata, Say, Jour. Acad. Phila. 
H. lineata, en- 
larged |B BATH SW 1Su7. 
Fig. 79. lise 
Shell small, discoid, pale greenish yel- 
low; whorls 4, planulate above, concave 
beneath, with about fifteen revolving 
lines; aperture narrow-lunate, two pairs 
of teeth, within the outer lip; one pair 

visible, the other deeper; lingual mem- 
brane with 77 curving rows of 1I2-I-12 
teeth, each; buccal plate narrow, crescentic, anterior 
surface, with converging stria, 
Jaw of H. lineata. — { Morse. | 
Fig. 80. cutting margin smooth, with a 
g median projection. H.1, W. 
aioe 1s) E 

Lingual Dentition of H. lineata. — [Morse.] 
Fig, 81, 

Station, in cool wet places, under stones. Chester 
County; frequent. 
Sub-genus PUNCTUM, Morse, 1864. 
Shell exceedingly minute, discoid, umbilicate; aperture 
rounded; peristome thin, acute. 
P. minutissimum, LEA. 
Helix minutissima, Lea, Trans. Amer. Phil. Soct., 
IXs 1847. 
Shell very minute, depressed-turbinate, above, convex 
