| 11. | The shell shows well-marked crowded sinuous accremental striae.
|
| 12. | There are a few revolving striae at the base of the shell.
|
| 13. | The young of this species have folds and striae much more prominent.
|
| 14. | And in this strongly nodose variety the incremental striae are usually inconspicuous.
|
| 15. | The interstices of the ribs are spirally striated with fine transverse striae.
|
| 16. | Elytra present thin and shallow striae, almost absent in larger specimen.
|
| 17. | The varixlike striae on the last whorl are remarkable,"
|
| 18. | The forewings are dingy white with brownish overscaling and darker brown striae.
|
| 19. | The hindwings are light fuscous, with darker transverse striae.
|
| 20. | The forewings are pale grey with blotchy brownish grey striae.
|
