410 PLIOCENE MOLLUSCA. 



Specific Characters. — Shell ovately fusiform, larger than A. subangulosa ; whorls 

 6 — 7, obtusely angulate towards the top forming a shoulder, finely striated ; costae 

 hardly perceptible (A. Bell); spire tapering; suture slight; inner lip reflected ; 

 plaits on the columella indistinct. 



Dimensions. — L. 15 mm. B. 6 mm. 



Distribution. — Not known living. 



Fossil : Coralline Crag : Gomer pit. 



Remarks. — This form was described by Mr. Bell in 1870 as a new species from 

 one or two specimens he had found at the Gomer pit, near Oxford. It was after- 

 wards figured by Wood as identical with the minute shell last described as C. sub- 

 angulosa. Mr. Bell, however, still considers them distinct. I have not the 

 material enabling me to express any opinion of my own, but in view of the doubt 

 as to whether either of them can be regarded as the equivalent of the Oligocene 

 fossil alluded to above, it may be well to keep the matter alive for further 

 consideration. 



Admete (Babylonella) gracilenta (S. V. Wood). Plate XXXIX, figs. 51, 52. 



1872. Cancellaria (Admete) gracilenta, S. V. Wood, Mori. Crag Moll., 1st Suppl., pt. i, p. 46, pi. iii, 



fig. 23. 

 1890. Cancellaria gracilenta, C. Eeid, Plioc. Dep. Brit., p. 239. 

 1912. Admete (Babylonella) gracilenta, Cossinann, Ess. Paleoconch. cornpar., vol. iii, p. 36. 



Specific Characters. — Shell small, ovate, narrowed at both ends ; whorls G, 

 convex ; ornamented by numerous fine, rather inconspicuous costse, intersected 

 and decussated by fine spiral ridges ; suture fairly deep ; mouth oval ; outer lip 

 thin, rounded, somewhat expanded ; inner lip reflected on the pillar with a small 

 umbilicus ; columella with three inconspicuous folds. 



Dimensions. — L. 10 — 15 mm. B. 6 — 9 mm. 



Distribution. — Not known living. 



Fossil: Coralline Crag: Sutton, Boyton, Kamsholt. Waltonian : 

 Little Oakley. 



Remarks. — The form represented under the above name was first considered by 

 Wood as a variety of Admete viridula, but was afterwards described by him as 

 specifically distinct, a view accepted by M. Cossmann, who includes it in the sub- 

 genus Babylonella. 



Admete (Babylonella) Wouweri, sp. nov. Plate XXXIX, fig. 50. 



Specific Characters. — Shell small, slender, fragile ; whorls convex, the last two- 

 thirds the total length ; ornamented by excessively fine and closely-set spiral 



