NERIN AA. 207 
140. Nerinma zonopHora, sp. nov. Plate XIV, fio. 7. 
Description : 
Spiral angle (regular) . ; : . War. 
Height of whorl to width : , 5 lg 119835 
Approximate leneth . : 50 mm. 
Shell cylindro-conical, turrited. Number of whios ls abeat fourteen, strongly 
concave, the principal depression median. Sutural carina prominent and 
extremely thick, the suture being in the centre of the carina. Columella 
? hollow, with closed umbilicus. The apical whorls present fine and very slightly 
granulated spiral lines; two in the earliest whorls, and increasing to four, and 
possibly more, lower down. The section is triplicate, and differs but little from 
that of N. Weldonis. 
Relations and Distribution.—Distinguished from N. Weldonis by the greater 
constriction of the whorls, which is median, and by the great thickness of the 
sutural belt; the whorls are longer and the spiral angle narrower than in 
N. Eudesii. It bears a certain resemblance to N. twmentisutura, Piette,’ but the 
internal section is very different. 
Rare in the Lincolnshire Limestone of Weldon. 
141. NeRin#a suscLaBra, sp. nov. Plate XIV, fig. 8 
Description : 
Spiral angle (nearly regular) . : . 12°—18°. 
Height of whorl to width : ; op i sdg25: 
Approximate length . . 70 mm. 
Shell cylindro-conical, subulate. Whorls acobalily fourteen, nearly flat ; 
sutural varix not prominent, merely a rim on the posterior margins. ‘The middle 
whorls are ornamented with four or five granulated spirals, which seem to die out 
gradually, the last two whorls being smooth. [The figured specimen shows the 
lines of growth in this portion of the shell.}| Umbilicus closed ; it is uncertain if 
columella be solid or not. Section triplicate, with one small anterior fold on the 
columella very low down. 
Relations and Distribution.—Differs from such forms as P]. XIV, fig. 6, in its 
greater smoothness of outline and freedom from turriting, and in some minor points. 
It approaches N. Sharmanni, Rig. and Sauv. (‘ Bathonien du bas Boulonnais,’ 
1 See Cogsmann, op. cit., p. 197, pl. xvii, figs. 49—51, where N. tumentisutura, though described 
in the text as a Pfygmatis, is figured as a triplicate Verinea. 
