290 GASTEROPODA OF THE INFERIOR OOLITE. 
222. AMBERLEYA (TuRBO) Mitizri, Wright, MS. Plate XXIII, fig. 5. 
Description : 
Length . . 15—25 mm. 
Length of body- wheel to fotal Rechte . 60: 100. 
Spiral angle : : ay LO2 
Shell conical, turbinate, rather thin. Number of whorls about eight ; apicals 
rather convex and smooth, remaining whorls but slightly tumid; suture well 
impressed. In the whorls of the spire the ornaments consist of finely tuber- 
culated spirals increasing in number up to about five; these are nearly equal in 
degree of salience, but in the penult the lower one slightly projects; fine axial 
costz and striz decussate the spirals. 
The body-whorl has about seven spirals, the upper ones being usually the 
most spinulose ; the two lower ones are more closely tuberculate, and constitute a 
slight double keel (sub-eucycloid). In the base are nearly a dozen spirals, slightly 
tuberculate and with fine intermediate axial striz. Aperture subcircular, with a 
short and rather straight pillar lip. 
Relations and Distribution—Through Amberleya densinodosa this turbinate 
species is connected with the eucycloid Amberleyas, whilst, on the other hand, it 
has obvious relations with the species next described. Although there are forms 
figured by Goldfuss, d’Orbigny, and others which approach Amberleya (Turbo) 
Milleri, it seems to stand out with sufficient distinctness to be accepted as a 
species of Amberleya which still retains some trace of the eucycloid character. 
It is fairly plentiful in the concavus-bed at Bradford Abbas. 
223. AMBERLEYA (TURBO) TURBINOIDES, sp. nov. Plate XXIII, fig. 7 and ? fig. 6. 
Description : 
Length . : . 25 mm. 
Length of body- ion to total mse 3 = 48,3100: 
Spiral angle ; : . 44°. 
Shell conical, subelongate, piaeneins Number of whorls about eight; those 
in the upper part of the spire are rather flat, but become angular towards the 
penult ; suture wide and finally gaping. 
The ornaments exhibit considerable variety ; in the middle stage the whorls 
possess four or five finely tuberculated spirals, the lowest being the longest and 
most prominent, forming a kind of keel. In the penult the spirals become more 
