50 CONCHOLOGIA CESTRICA. . 



of the shell ; aperture rounded, with the margin reflected, 

 flattened, white. H. 4^, W. 2, mill. 



Station, in grass fields, and often under stones, and 

 loose bark. Chester County ; common. 



L. fallax, SAY. 



Pupa fallax, Say, Jour. Acad. Phila. F. S., 



J. fallax. J J 



Fig. 103, V., 1825. 



Shell conical, acute ; suture deep ; whorls 6, 

 the last, one-third wider than the preceding 

 one, and more than half the entire length ; 

 aperture oval ; the margin sub-revolute, but not 

 flattened, unicolored ; columella rectilinear, 

 longitudinal. H. 4^, W. 2^, mill. 



Station, under bark, near Philadelphia. (Tryon.) 



L. armifera, SAY. 



Pupa armifera, Say, Jour. Acad. Phila. 

 Fig. 104. F. S., II., 1821. 



Shell oblong-oval; whorls 6; lip re- 

 flected, white, almost completing the 

 circle ; aperture nearly circular, cup- 

 form, with four, or more, teeth one on 

 the pillar lip, large, prominent, one near 

 the base, and two or three smaller ones, 

 on the outer lip; umbilicus small. H. 

 :, W. 2, mill. 



Station, among grass, and under chips 

 and stones, near streams. New Garden, Chester County ; 

 common. 



L. contracta, SAY. 



Pupa contracta, Say, Jour. Acad. Phila. F. S., II., 

 1822. 



