466 GASTEROPODA OF THE INFERIOR OOLITE. 
Genus—Actuon, Montfort, 1810. 
‘Shell oval, spirally striated; spire prominent, conical, sharp; apex reversed ; 
suture well-marked ; apertwre lengthened, entire, rownded at the base ; outer lip sharp, 
columella furnished with a-strong basal fold.’’—Fiscunr. 
In Tornatellea, Conrad, there are two folds, and the aperture is slightly 
notched at the base. 
411. Acrmon (TorNaTELLMA) PULCHELLUS, Deslongchamps, 1848. Plate XLII, figs. 
12 and 13. 
1848. ToRNATELLA PULCHELLA, Deslongchamps. Mém. Soe. Linn. Norm., vol. viii, 
p. 162, pl. xviii, fig. 4 
185? AcTEONINA PULCHELLA, d’Orbigny. ‘Terr. Jur., vol. ii, p. 169, pl. eclxxxvi, 
figs. 7 and 8. 
1895. TorNareELL@a PULCHELLA, Deslongchamps. Cossmann, Gastr. Terr. Jur., 
p- 14, pl. i, figs. 6—8. 
Bibliography, §c.—Deslongchamps described this species as having three 
columellar folds, though it might require an exceptionally well-preserved specimen 
to show them. He justly hesitated to make a new genus. D’Orbigny placed it 
with doubt under Actxonina, considering that the folds indicated by Deslongchamps 
might bring it within the range of Acteon. The species is not quoted as British 
either by Morris or by Hudleston and Wilson. 
Description : 
Height ; ; : +, 1mm: 
' Body-whorl to total heiahe . 60-3100: 
Spiral angle. : DO. 
Shell oval, apex acute; whorls from ave to six, a with tabulated edge, 
body-whorl large. The entire shell is marked with deeply cut strie, wide apart, 
and exhibiting punctations. Aperture sub-elongate, elliptical, columella short 
and marked with oblique folds two or three in number; indications of an anterior 
notch. 
Relations and Distribution—This is perhaps one of the best marked species 
belonging to the Tornatellide which the Inferior Oolite affords. Undoubtedly it 
belongs to Acton rather than to Actwonina, and to the section or sub-genus 
1 Measured at the back of the shell. 
