HELIX. 245 



It is found under, and in the interstices of wet, decay- 

 ing wood, under layers of damp leaves in forests, and 

 under fragments of wood on the borders of ponds. 



I have recently examined the original specimen of the 

 shell described by Mr. Say as Helix egena, and by him 

 deposited in the collection of the Academy of Natural 

 Sciences, in Philadelphia. I could not, on careful com- 

 parison, detect any difference between it and the de- 

 pressed variety of H. chersina. Mr. J. S. Phillips, the 

 obliging curator of the department of conchology in that 

 institution, joined me in the opinion that the two are 

 clearly identical. The European analogue of this species 

 is //. fidva ; and the resemblance to each other is very 

 close, so much so that some have considered them as 

 identical. 



72, HELIX EGENA, SAY. 

 PLATE XXII. a. FIGURE 3. 



T. minuta, sub-globosa, dilute rufa, arete perforata, stria- 

 tula ; anfractibus ad quinque rotundatis ; sutura profunda ; 

 apertura circular! ; labro simplici, sub-dilatato, ad umbilicum 

 reflexo. 



DESCRIPTION. 



SHELL minute, sub-globose, turbinate, rather solid, 

 pale rusty-brown, striated with numerous, faint lines of 

 growth. Spire elevated, having about five closely rcv< >1 v- 

 ing, well rounded whorls, separated by a very deep 

 suture ; periphery rounded ; base convexly rounded, and 



