26 SUPPLEMENT TO GREAT OOLITE MOLLUSCA. 
dwarfed testacea, collected by Mr. Moore from the upper portion of the Great Oolite in 
the vicinity of Bath. 
ACTEON PHASIANOIDES, Jyc. Tab. XLIV, fig. 28. 
Testa parva ovato-elongata, subleve, spira alta, turrieulata afractibus 5, superne con- 
vexis, inferne planatis, anfractu ultimo magno, ovato, basi tenerrime striato, apertura 
elliptia, columella recta, uniplicatéa. 
Shell small, ovately elongated, nearly smooth; spire elevated, turreted ; volutions 5, 
convex above, the sides flattened, and the sutures strongly defined; the last volution 
slightly exceeds half the entire length of the shell; itis ovate, its base having some delicate, 
regular spiral striations ; the aperture is elliptical, the columella straight, having a single 
plication. 
Possibly the entire surface may have had striations still more delicate than those at the 
base, but no traces of them remain ; the spire is larger, and the volutions are more inflated, 
than is usually seen in this genus. 
Geological Position and Locality. The Great Oolite of Minchinhampton, collected by 
E. Witchell, Esq. 
AcTEONINA BREVIS. ‘Tab. XLI, fig. 6. 
Under the title of Cy/indrites brevis, an immature and imperfect example was figured 
in the first part of the ‘Great Oolite,’ Monograph. ‘Tab. VIII, figs. 13, 13, a; the fine 
example now figured was collected by Mr. Whiteaves in the Great Oolite of Kirklington, 
Oxon., and exhibits in the more advanced stage of growth a change in the last volution, 
whose upper margin rises higher than those of the preceding volutions, thus rendering the 
vertex slightly concave, a change with which recent conchology presents many analogous 
instances. ‘The figure of the columella leaves no doubt that it is an Acteonina. 
AcTEonIna Kirxuinetonensis, Lyc. Tab. XLI, fig. 5. 
Testa ovato-cylindrica, elongata, levigata, spira obtusa, perspicua, anfractibus (4) 
depressis, columella ad basin cortorta, apertura inferne elongata, ovata. 
Shell ovately cylindrical, elongated, smooth ; spire obtuse, depressed, the upper margins 
of the volutions exposed and rounded ; columella contorted at its base, forming with ner 
lip an umbilical depression ; aperture narrow above, pyriform, lengthened, and rather 
pointed at its base. 
A lengthened cylindrical Acteonina, with an exposed, obtuse spire, which does not rise 
higher than the upper border of the last volution; a small specimen is, in proportion, 
