34 CONCHOLOGIA CESERICA, 
plate, slightly arcuate; anterior face, with broad ribs, 
denticulating each margin. H. 3%-4'%, W. 7-10, mill. 
Lingual Dentition of 8. amonodon. —[Morse. } 
Fig, 34, 
COOTER, 
Utne 

Station, under decayed bark and stones. Chester 
County; rare. 
S. hirsuta, Say. 
Helix, hirsuta; Say, Jour. Phil: icads Mao. Ione 
Shell sub-globose, pale brown, with sharp, rigid, hairs, 
S. hirsuta, 2tranged in oblique lines; whorls 5; aperture 
Bee very narrow, almost closed, by an elongated, 
= lamelliform, tooth, on the pillar lip, reaching 
from the centre of the base to within the 
junction of the lips, above, and covering the 
umbilicus; outer lip narrowly reflected, 
grooved, with a notch near the middle of its inner 
margin; base very convex. H. 4, W. 6, mill. 
Station, under loose bark of logs. Chester County ; 
abundant. 
Oxs.—In some localities, it nearly doubles the di- 

mensions here given. 
Sub-genus ANGUISPIRA, Morssg, 1864. 
Shell heavy, large, depressed-turbinate, solid, costate- 
striate, banded with colored stripes; umbilicus moderate ; 
aperture simple, without teeth. 
