148 EOCENE MOLLUSCA. 
the latter, however, is a shorter, thicker, and coarser shell, with a proportionally longer 
spire; the columellar folds are four, more transverse, and nearly equally prominent ; the 
outer lip, in all stages of growth, is without plaits, and the inner lip, which is but little 
spread out, does not extend backwards beyond the suture. Brander’s shell (fig. 65) 
does not belong to this species ; and Lamarck, in fact, referred it to his V. spinosa, which 
is, however, a much less ventricose shell. It belongs to Mr. Sowerby’s V. spinosa, 
var. 3.; the latter is, as that gentleman suggested, a distinct species, and I have sepa- 
rated it under the name V. Solandri.  Brander’s Strom. dubius (fig. 68) is without doubt 
a young individual of the present species. 
Size.— Axis, 5 inches nearly; diameter 23 inches nearly. 
Localities—Barton Cliff and the corresponding formation in Alum Bay (Stratum 
No. 29, Prestwich.) Bracklesham Bay ? 
No. 88. Vo.tutTa Noposa. Sowerby. Tab. XIX, figs. 1 a—/. 
VotutTa Noposa, Sow. 1818. Min. Con., vol. iv, p. 135; t. 399, fig. 2; vol. 7, p. 6; 
t. 613, fig. 1. 
— — Defr. 1829. Dict. des Sci. nat., vol. lviu, p. 481. 
— _ Sow. 1850. Dixon’s Geol. &c., of Suss., p. 103; t. 5, fig. 23. 
—  opervexa? Beyr. 1853. Die Conchyl. des Norddeut. tertiar., vol. 1, p. 61; t. 3, figs. 
6a, 6,7 a, 6. 
V. testd ovato-acutd, obscure costatd, transversim sulcatd; spird elevatd, sub-conicd, 
apice acuto : anfractibus obtuse angulatis, bind serie spinarum nodiformium coronatis ; aper- 
turd angusta, in medio latiori ; labro ad marginem crenulato, intus plicato ; labio late ex- 
panso ; columella triplicata. 
Shell ovate, pointed, obscurely ribbed, transversely furrowed ; spire elevated, almost 
conical, with a small pointed apex; whorls, five or six, slightly convex, obtusely angu- 
lated at the shoulders; the ribs, which in the fully-grown shell are obscure and scarcely 
extend to the middle of the whorl, terminate at the shoulder in a row of blunt, nodiform 
spines ; a second row of blunt spines, corresponding with the first, runs round the sutural 
margin, but becomes almost obsolete on the last whorl. The space between the suture 
and the shoulder is moderately wide, slightly concave, obscurely sulcated ; the furrows on 
the whorls are narrow, concave, and separated by wide flat spaces, roughened by sharp 
conspicuous lines of growth. The aperture is rather narrow at each extremity, wider 
in the middle; the outer lip bluntly angulated towards the posterior extremity, crenu- 
lated on the margin, and plicated within ; the inner lip is spread over the front of the 
body-whorl, extending backwards to the spines on the preceding whorl, and much 
thickened; the columella is a little flattened, and furnished with three folds, the an- 
terior one of which is distant from the others, and large and prominent. 
The present species, founded on a specimen from Barton Cliff, is widely spread, 
and ranges downwards to our older Eocene formations; since the Volutes which 
