294 GASTEROPODA OF THE INFERIOR OOLITE. 
227. AmBERLEYA, cf. pIncuIs, Deslongchamps, 1860. Not figured. 
1860. Evucycnus prnauts, Desi. Bull. Soc. Linn. Norm., v, p. 145 (p. 30 sep. 
copy), pl. xi, fig. 7. 
Mr. Tawney found an indifferently preserved specimen of Amberleya at Midford, 
which he referred to Amb. (Turbo) princeps, Rémer. Recently Mr. Wilson has 
found another specimen, which is not calculated to throw much additional light on 
the subject. These fossils more resemble Hucyclus pinguis, Desl., than any other 
figured species. The calcareous beds at Midford are mainly within the Parkin- 
soni-zone. Hucyclus pinguis is quoted from the primordialis-zone. 
There are one or two other ill-defined forms of Amberleya, which I have 
concluded not to notice on the present occasion. 
Genus—Lirtorina, Férussac, 1821. 
Shell turbinate, thick, pointed, few-whorled ; aperture rounded ; outer lip acute, 
columella rather flattened, imperforate. 
Tectarius, Valenciennes, 1838. Shell muricated or granulated, sometimes with 
an umbilical fissure ; columella callous, partially toothed at the base. 
Echinella, Swainson, 1840. Shell granulated, thick; base of the colwmella 
toothed. 
From what has already been said, the true affinities of the shells about to be 
described are somewhat uncertain. They differ from the Amberleyas principally 
in having a small and thick shell. Most of them seem to have more affinity with 
Tectarius or Hchinella than with Littorina, nor can I in all cases strictly define 
the difference between Amberleya and Littorina. It must be understood that in 
the succeeding pages Littorina is used partly in a conventional sense. 
228. Lirrormna (HCHINELLA) Prator, Goldfuss, 1844. Plate XXIV, fig. 8. 
1844. Turso prmtor, Goldf. Petref., pl. exciv, fig. 8. 
Cf. also Turso Meriant, d@’Orb., non Goldf., T. J., ii, pl. ecexxxv, fig. 5, non 
figs, 2—4. 
Description : 
Length . : : : 25 mm. 
Length of body-whorl to total height . » on 200: 
Spiral angle ‘ Sess 
Shell pyramidal. Number of whorls about seven, flat, increasing under a 
regular spiral angle, and well separated by the suture. The ornaments consist of 
