44 MOLLUSCA FROM THE GREAT OOLITE. 
NatIca VERNEUILI, Archiac. Plate VI, figs. 6, 6a, 7, Ta. 
NatiIca VERNEUILI, Archiac. 1843. Mem. Soc. Géol. France, t. 5, p. 378, pl. 30, fig. 3. 
_ — Bronn. 1848. Index Palzont., p. 788. 
— _— D’Orb. 1850. Prod. Paleont., p. 299. 
NV. Testa subhemisphericd, spird elatd, anfractibus (5) angustis et convexiusculis, apicé 
acuto ; anfractu ultimo per magno, ventricoso ; aperturd magna semilunari; basi lata et 
rotundatd. 
Shell subhemispherical, spire elevated, whorls (5) narrow and slightly convex, apex of 
the spire acute, last whorl very large and ventricose, aperture large, semilunar, base wide 
and rounded. 
The planking has supplied the only good specimens of this rare species. It would 
also seem to occur in the calcareo-arenaceous beds of the upper portion of the formation, 
judging by the aspect of casts. Length 23 lines, breadth 22 lines. 
Locality. Minchinhampton. Eparcy, France. 
Natica Micuetini, Archiac. Plate VI, figs. 2, 2a, 3, 3a. 
Narica MicHELini, drchiac. 1843: Mem. Géol. Soc. France, t. 5, p. 377, pl. 30, fig. 1. 
— _— Bronn. 1848. Index Palzont., p. 785. y 
— — D Orb. 1850. Prod. Paleont., p. 299. 
NV. Testé ovata, spird parva, apice submamillato ; anfractu ultimo elonyato, basi lata ; 
apertura superne angustatd ; labro interno calloso conveviusculo. 
Shell ovate, spire small; apex submamillated, last whorl elongated, its base wide ; 
aperture narrow above ; lip somewhat thickened, straight, and convex. 
The straight border of the inner lip, its convexity, and the minute spire, sufficiently 
characterise it. The spire consists of 5 or 6 whorls, of which the first two or three form a 
minute mamillated apex. Our figures sufficiently represent the varieties of form, of which 
the more elongated is the most common. ‘The planking contains it not unfrequently ; and 
some beds in the upper limestones contain numerous casts, which can scarcely be referred 
to any other shell. 
Length of the globose variety 18 lines, width 16 lines; length of the elongated variety 
18 lines, width 13 lines. 
Locality. Minchinhampton. Eparcy and Sancerre, France. 
Natica amBieva. Plate VI, fig. 5. 
? CassIS EPARCYENSIS, Archiac. 1843. Mém. Soc. Géol. France, tom. v, p. 385, 
pl. 31, fig. 10. 
? ACTEONINA EPARCYENSIS, D’Orb. 1850. Prod. Paléont., p. 299. 
