AMBERLEYA. 291 
numerous and variable, and, as the suture gapes very much, spirals are sometimes 
seen below the keels. 
The body-whorl is globose, the spirals, including those in the base, being 
sometimes twenty in number. The sub-eucycloid character of the spire is more 
or less lost. The two posterior spirals are more strongly tuberculated than the 
others. Fine axial striz are conspicuous in well-preserved specimens. Aperture 
ovate to subcircular, with a very short columellar lip. 
Relations and Distribution.—This shell approaches Amberleya (Turbo) Milleri, 
which is more trochiform, has a wider spiral angle, and a less gaping suture. 
There is, however, in Amb. turbinoides an amount of irregularity such as tends to 
the suspicion that the name may represent a group of aberrant forms rather than 
a distinct species. It also has affinities with Amb. densinodosa. From Turbo 
modestus, Héb. and Desl., it is clearly distinguished by the irregularity of the 
whorls of the spire. 
There are four specimens in my collection from Stoford and Bradford Abbas. 
224, Ampurteya (Turso) Sroppart, Tawney, 1873. Plate XXIII, fig. 11. 
1873. Turso Stoppart1, Zuwney. Dundry Gasteropoda, p. (29) 21, pl. ii, fig. 1. 
Cf. : — mopestus, Héb. and Desl. Foss. Montreuil-Bellay, p. 57, pl. iii, 
fig. 2. 
Bibliography, §c.—Mr. Tawney described his species from a single imperfect 
specimen in the Bristol Museum, smaller than the one figured above, and differing 
from it to a certain extent in the alternately stronger and fainter spirals. If the 
form figured in the plate is not fairly referable to Turbo Stoddarti, it may be 
accepted as an Inferior Oolite variety of Turbo modestus. 
Description : 
Length . : : . 30 mm, 
Length of body-whorl to total height . - 55: 100. 
Spiral angle : : : uc 
Shell turbinate, thin. Number of whorls about eight, convex, and ultimately 
globose; suture distinct. The ornaments consist of about ten fine and evenly 
nodulated spirals of nearly equal prominence, the interspiral striz being fine and 
regular. In some specimens are faint secondary spirals. 
The body-whorl is rather more than half the height of the entire shell, ventri- 
cose, and has about ten spirals, of which two pairs, on either side of a line of 
tubercles in the centre, are slightly distinguished from the rest (sub-eucycloid). 
There are about fourteen finely granulated spirals in the very full and rounded 
base. 
