SUPPLEMENT. 487 



and may be regarded as a slender micromorpli of Lycett's species. A single 

 specimen from tlie Lower Limestone (below the Pisolite horizon) at Nailsworth. 

 Cf. Geritella minutissima, Lycett, Grrt. Ool. Moll., Suppl., Plate 45, fig. 5. 



N.B. — CeriteUce of this group are not always easy to distinguish from the early 

 stage of certain species of Nerinaea. 



4i4t4i. Ceeitella Stoeensis, sp. nov. Plate XLIII, fig. 25. 



Description : 



Height . . . . .5 mm. 



Body-whorl to total height . . . 70 : 100. 



Spiral angle . . . . . 60°. 



Shell smooth and sub-globose, consisting of about five 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 

 Geritella known in this country. A single specimen from the Lincolnshire Lime- 

 stone at Stoke Lodge. 



445. Cerithinella, sp. Plate XLIV, figs. 5, 6 «, 6 h. 



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 Brodiei. The 

 section (fig. 5) has slight indications of a fold in the outer wall as in Nerinella} 



446. Nerin^a (Nerinella) neglecta, sp. nov. Plate XLIV, figs. 4rt, 4Z). 



Description : 



Height . . . . .12 mm. 



Spiral angle ..... 30°. 

 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 



^ For an account of Nerinvea (or Cerithinella) cingenda, Sowerby, figured on Plate XII of this 

 Monograph, see ' Geoh Mag.,' dec. iii, vol. i, p. 112, pi. iv, figs. 9 and 9r?. 



