TAB. UXOX DX: 
Note.—The lines indicate the actual dimensions of the specimens. 
Higgs 
1. Pleurotoma constricta. No. 178, p. 256. 
a. Side view, natural size ; from Barton. 
6. Ditto of body-whorl, magnified. 
c. Front view, nat. size. 
2. Pleurotoma scabriuscula. No. 176, p. 254. 
a. Back view, magnified; from Highcliff. 
6. Side view, ditto. 
ce | Ditto; ditto. 
3. Pleurotoma verticillum. No. 177, p. 255. 
a. Back view, nat. size; from Barton. 
b. Ditto of body-whorl, and part of the spire, magnified. 
c. Front view, nat. size. 
4, Pleurotoma turgidula. No. 172, p. 251. 
a. Back view, nat. size ; from Alum Bay (Strat. No. 29, Prestw. ?) 
6. Side view, ditto. 
ce. Ditto — of the body-whorl, magnified. 
5. Pleurotoma tereticosta. No. 171, p. 250. 
a. Back view, nat. size; from Highgate. 
b. Ditto, magnified. 
Cc. Ditto, (var. soror), nat. size; from Southampton. 
d. .. Ditto, (ditto) magnified. 
6. Pleurotoma brevirostrum. No. 180, p. 258. 
a. Back view, nat. size; from Muddiford ? (A/us. Sow.) 
6. Front view, ditto. 
7. Pleurotoma nodulosa. No. 181, p. 260. 
a. Back view, nat. size; from Stubbington. 
6. Front view, ditto. 
c. Side view, magnified. 
8. Pleurotoma nodosaria. No. 182, p. 261. 
a. Back view, magnified ; from Southam) ton, 
6. Front view, ditto. 
