SUPPLEMENT. 487 
and may be regarded as a slender micromorph of Lycett’s species. A single 
specimen from the Lower Limestone (below the Pisolite horizon) at Nailsworth. 
Cf. Ceritella minutissima, Lycett, Grt. Ool. Moll., Suppl., Plate 45, fig. 5. 
N.B.—Ceritellz of this group are not always easy to distinguish from the early 
stage of certain species of Nerina. 
444, CHRITELLA STOKENSIS, sp. nov. Plate XLIII, fig. 25. 
Description : 
Height : : ; . Omm. 
Body-whorl to total Helge ; : Oe OO: 
Spiral angle . : : EeeUe. 
Shell smooth and sub-globose, consisting of about ave whorls; apex sharp; the 
whorls of the spire are narrow and flat, with a close but distinct suture. There is 
a slight ledge on the posterior margin of the body-whorl, which is tumidly elongate, 
being very large in comparison with the spire. The aperture is oval-elongate, 
outer lip thin, columella curved, and terminating in a wide notch, which is slightly 
reflexed. 
Relations and Distribution.—This form differs completely from any species of 
Ceritella known in this country. A single specimen from the Lincolnshire Lime- 
stone at Stoke Lodge. 
445. CERITHINELLA, sp. Plate XLIV, figs. 5, 6a, 6b. 
The lower beds of the Lincolnshire Limestone have yielded some fragments of 
Cerithinella, a genus not hitherto noted in the East Midland district. In external 
ornamentation these specimens serve to remind me of Cerithinella Brodiet. The 
section (fig. 5) has slight indications of a fold in the outer wall as in Nerinella.* 
446. Nerina (NERINELLA) NEGLECTA, sp. nov. Plate XLIV, figs. 4a, 40. 
Description : 
Height ; : : é . 12mm. 
Spiral angle . ; a sos. 
Shell conical-elongate, turrited, with a somewhat convex spiral angle. 
Number of whorls about eight, narrow, without visible ornament, but much 
thickened at the posterior margin, so as to cause a marked increase or turreting of 
1 For an account of Nerinza (or Cerithinella) cingenda, Sowerby, figured on Plate XII of this 
Monograph, see ‘ Geol. Mag.,’ dee. iii, vol. i, p. 112, pl. iv, figs. 9 and 9a. 
