[ 6 ] 



F I G. 20. 



HELIX Striata apertura compreffa tribus anfra(5llbus carinata. 



The ftriatcd fuboval mouth'd fnail of three fpires and a fliarp edge. 

 The colour light brown pellucid. 

 From the fame place as N° 18. 



F I G. 21. 



HELIX Subglobofa umbilicata ore fubrotundo margine fplnofo. 



The roundifti mouth deeply umbilicated fnail with a thorny margin, 



The colour brown pellucid. 



From Byfing Wood, near Faverfham — exceeding rare. 



F I G. 22. 



HELIX Umbilico profundo trium anfra6luum apertura fubrotunda. 



The fnail with three fpires, deep umbiUcus, and a roundifti mouth, 

 The colour white, opaque and glofly, 

 From Sandwich — not common. 



FIG. 23. 



HELIX Paludofa comprefia tribus anfraflibus ore rotundo reflexo. 



The bog fnail of three fpires, with the border of the round mouth 



reflecSted, 

 The colour white and opaque, 

 In marfliy ground near Faverfham — common. 



This elegant Shell is here engraved, as before, only defcribcd by Dacofta from Morton's 

 Norkhamptonfhirc, p. 417. 



FIG. 24. 



