﻿Fig. 



8. Pleurotoma Waterkeynii. No. 200, p. 275. 



a. Front view, nat. size ; from Potter's Bar. 



b. Back view, ditto. 



c. Part of the body-whorl, magnified. 



9. Pleurotoma callifera. No. 215, jo. 291. 



a. Front view, magnified ; from Highcliff. 



b. Side view, ditto. 



10. Pleurotoma callifera, var. monilifera. No. 215, p. 291. 



a. Back view, nat. size ; from Barton. 



b. Front view, ditto. 



11. Pleurotoma callifera, var. raphiurn. No. 215, p. 291. 



a. Back view, magnified ; from Highcliff. 



b. Side view, ditto. 



] 2. Pleurotoma fasciolata. No. 212, p. 286. 



a. Back view, shell of mid-growth, nat. size ; from Highgate. ■ 



b. Front view, adult shell, ditto ; from Railway Cutting, at 



Kilburn. 



13. Pleurotoma taeniolata. No. 210, p. 284. 



a. Back view, nat. size ; from Cuffell {Mm. Prestw.) 



b. Front view, ditto. 



c. Part of the body-whorl, ditto. 



14. Pleurotoma abnormis. No. 218, p. 294. 



a. Back view, nat. size ; from Highgate. 



b. Front view, ditto. 



15. Pleurotoma Volgeri. No. 199, p. 275. 



a. Back view, nat. size ; from Potter's Bar. 



b. Ditto, magnified. 



