CONCHOLOGIA CESTRICA. ae 
T. inflecta, Say. 
Fieliseintleetay Say, tjour. PhilivAcadsF..S., TL, 1827. 
Shell convex, brownish horn color, with fine, hair- 
like, projections; whorls 5, with very 7 inecta.— [B. & B.] 
minute, transverse, striz; suture not Fig. 31. 
much impressed; aperture three lobed, S 
very much contracted, bya deep groove 
behind the lip; lip white, narrow, re- 
flected over the umbilicus, with two 
acute teeth on the inner margin; the superior one in- 
flected ; the other, half way between it and the base, and 
separated by a profound sinus; parietal tooth long, 
arcuated; umbilicus covered, impressed. H. 7, W. 12, 
mill. 

Station, mountains, Pennsylvania. 
Sub-genus STENOTREMA, RarineEsque, 1819. 
Shell lenticular, or depressed globose, mostly pilose; 
whorls 4%-6, the last gibbous; base tumid; aperture 
long, and narrow; basal lips white; the superior nar- 
rowly reflected; the inferior similar, or presenting a 
notch, near the middle; no umbilicus. 
S. monodon, RACKET. mcrae 
Helix monodon, Racket, Linn. Trans., Fig. 32. 
XII, 1822. 
Shell sub-globose, depressed above, pale 
chestnut, minutely hairy ; whorls 5-6; aper- 
ture arcuate, contracted, by a deep groove, behind the 
_ lip, which is narrowly reflected, and 

aw of S.monodon, 
reaches to the base, partly, or wholly, [Morse. ] 
Fig, 33, 
closing the umbilicus; parietal tooth 
elongated; lingual membrane with 100 
rows, of 28-1-28, teeth, each; buccal 
C 

