| 41. | The peristome ribs are well developed, being up to 2 mm high.
|
| 42. | The flattened peristome is up to 6 mm wide.
|
| 43. | The peristome is greatly reduced and bears smaller teeth.
|
| 44. | The flattened peristome bears ribs spaced 0.5 to 1 mm apart.
|
| 45. | The aperture or peristome of the shell may be simple or variously modified.
|
| 46. | The peristome is white, broadly expanded and reflexed.
|
| 47. | Peristome is continuous, somewhat expanded, little thickened.
|
| 48. | The peristome is continuous, not closely appressed at the upper left side.
|
| 49. | The peristome ranges in colour from green to red.
|
| 50. | The peristome is thin, though slrongly ribbed exteriorly.
|
