TAB. XXXI. 
Notr.—The lines indicate the actual dimensions of the specimens. 
1. Pleurotoma obscurata. No. 220, p. 296. 
a. Front view of shell of mid-growth, nat. size ; from Bracklesham Bay. 
6. Back view of adult shell, ditto. 
. Pleurotoma curta. No. 230, p. 305. 
a. Back view, magnified ; from Alum Bay (Strat. No. 29, Prestw.) 
4. Front view, ditto. 
. Pleurotoma conifera. No. 198, p. 274. 
a. Back view, nat. size; from Bracklesham Bay. 
6. Front view, ditto; from Bramshaw. 
. Pleurotoma rotella. No. 223, p. 299. 
a. Back view, magnified ; from Highcliff. 
6. Side view, ditto. 
. Pleurotoma cedilla. No. 224, p. 300. 
a and J. Back views, magnified ;, from Barton. 
. Pleurotoma scalarata.- No. 219, p. 295. 
a. Back view, nat. size; from Bramshaw. 
6. Side view, ditto. 
. Pleurotoma granata. No. 234, p. 308. 
a. Front view, nat. size; from Highgate. 
6. Back view, ditto. 
c. Part of the body-whorl, magnified. 
. Pleurotoma Hantoniensis. No. 240, p. 315. 
a. Back view, shell of mid-growth, nat. size; from Lyndhurst. 
b. Side view, ditto, ditto; from Brockenhurst. 
c. Front view, adult shell, ditto. 
