AMBERLEYA. 277 
Littorina Phillipsii, Mor. and Lye. 
—  sulcata, Héb. and Desl. 
_ Weldonis, sp. n. 
—  eedilis, Mist. | 
—  Dorsetensis, sp. un., A. ) Bdilis-group 
— — — B. 
—_— — — C. 
— (? Trochus) pisolitica, sp. n. 
—  (? Trochus) recteplanata, Tawney. 
— (? Trochus) triarmata, Héb. and Desl. 
AMBERLEYA, Morris and Lycett, 1851. 
Shell turbinate, more rarely trochoid, rather thin, imperforate or nearly so; sub- 
elongate, frequently turrited, sutural space wide; ornamented with spiral bands, 
usually spinulose or nodular, some of which are prominent (Eucyclus). The 
interspaces are finely striated, the strixe being slightly oblique to the axis ; sometimes 
these fine lines are strong enough to represent fine axial ribs. Base rounded, 
spirally ribbed, and marked by fine radial striz. 
Aperture suboval, but varying according to age. In the early stage the columellar 
lip is nearly straight, and produced anteriorly so as to be almost veflewed at the 
extremity (like Purpurina). In the adult the aperture is more or less rounded, so as 
to become suboval or subcircular ; there is usually a considerable deposit of callus ; 
outer lip thin and often crenulate. 
208. AMBERLEYA CAPITANEA, Miinster, 1844, Plate XX1I, fig. 12. 
1844. Turzso caprrangus, Miinst. Goldf., Petref., pl. exciy, fig. 1. 
1852. — — os D’Orb., Terr. Jur., vol. ii, p. 341, pl. ccexxix, 
figs. 7, 8. 
1863. AmBERLEYA caprraNnea (7), Goldf. Lycett, Suppl., p. 95, pl. xli, fig. 1. 
1884. _ _ — Beeby Thompson, Upper Lias of 
Northants, p. 309, pl., fig. 3. 
Non Turzo caprranevs, Miinst. Morris and Lycett, Great Oolite Moll., 
pt. 1, p. 65, pl. ix, fig. 33. 
Bibliography, §c.—The type is stated to be from the Inferior Oolite near 
Grétz. D’Orbigny says that the species occurs everywhere along with Turbo 
subduplicatus in the Toarcian. No locality in Calvados is quoted by him. The 
form from the Great Oolite, doubtingly referred by Morris and Lycett to Mimster’s 
