PROSOBRANCHIATA. Li 
A short variety, (fig. 6 4), is also found, in which the whorls are angulated at the 
shoulder, the ribs are shorter, more numerous, and crowned with single, sharp, erect spines. 
Size.—Axis 4 inches; diameter, 2} inches. 
Localities—Bracklesham Bay. French: Grignon, Courtagnon, Parnes (fide Desh.), 
Hattencourt, Hermes (fide D’Orb.). Belgian: Brussels, Panisel, near Mons (fide Nyst). 
Section B. (Pullus sub-papillary) continued. 
b. Shell fusiform ; inner lip narrow ; columellar plaits few. 
No. 115. VotutTa unripLicata. Sowerby. Tab. XXIII, figs. 2 a—e. 
VoLUTA UNIPLICATA. Sow. 1850. Dixon’s Geol., &c., of Suss., pp. 107 and 188, t. 7, 
figs. 45, 46. 
— aneusta. Sow. 1850. Idem., t. 7, fig. 37. 
V. testd fusiformi, obsolete costatd, in juventd transversim tenuissime striata, ad basin 
obscure sulcatd, profunde emarginatd ; spird conicd, apice sub-papillari ; anfractibus de- 
presso-convextusculis, obtuse angulatis ; apertura oblongo-oval ; labro incrassato, intus levi ; 
labio angusto, crasso ; columelldé leviter arcuatd, uniplicata. 
Shell fusiform, faintly ribbed, obscurely sulcated towards the base, and deeply 
notched in front; spire elongated and nearly conical; pullus sub-papillary : whorls 
rather convex, flattened at the side, and obscurely angulated at the shoulder; in the 
young state they are ornamented with crowded, very fine, transverse striz. The ribs 
are prominent, thick, rounded, and produced nearly to the base; but on the last two or 
three whorls they become obsolete, and are replaced by a row of obscure, blunt tubercles 
placed on the angle of the shoulder ; the transverse striation is also lost, and the body 
whorl is smooth, except where the shallow, faint, basal furrows appear ; the aperture 
is of a lengthened oval shape; the outer lip thickened near the suture, rather sharp- 
edged towards the front, and smooth within ; the inner lip narrow and thick ; the colu- 
mella slightly curved, and furnished with one prominent fold, placed nearer to the 
anterior extremity than is usually the case. 
Fig. 2 @ is taken from the shell figured in Mr. Dixon’s work (t. 7, fig. 37) as 
V. angusta. 
This species, which appears to be well characterised, is not uncommon. 
Size.—Axis, 3 inches nearly ; diameter, 9-10ths of an inch. 
Locality —Bracklesham Bay. 
