NERINiEA. 209 



143. Nerin^a, cf. rsEUDOPDNCTATA, Cossmann, 1884, Plate XIV, figs. 10 a, 10 h, 



10 c. 



Compare 1851. Neein^a punctata, VoKz. Morris and Lycett, Great Ool. Moll., p. 35, 



pi. vii, fig. 10. 

 — 1884. Nerinjea pseudopunctata, Gossmann. Et. Bathonien, p. 210, pi. i, figa. 



18—20. 



Bihliu(jra2}hi/, c^r. — The type of Voltz and Bronn (' Jabrb.,' 1836, p. 559, pi. 6, 

 fig. 23) is an Upper- Jurassic species from tlie " Portlandian " of the Haute-Saone. 

 Mons. Cossmann considers that Morris and Lycett were in error in thus referring 

 the Bathonian fossil, which he renamed N. i)seudoi)unctafa. The specimens from 

 Great Ponton, whilst presenting many analogies with those from Minchinhampton, 

 are more elongate, and apparently less disposed in steps. I am induced, therefore, 

 to doubt the specific identity ; but as the specimens from the Lincolnshire Lime- 

 stone are much worn, a comparison of the ornaments cannot be instituted with 

 certainty. 



Description (partial). — The spiral angle is about 12° and regular; the whorls 

 are short (1 : 1*5), and the approximate length about 90 mm. Shell conical- 

 elongate. Whorls about twenty, the apical ones somewhat in steps, the later ones 

 flat and without any turriting. 



At an early stage (fig. 10 c) two granulated spiral lines occupy the space 

 between the sutural varices, the lowest having the largest granules. In the next 

 stage (fig. 10 h) there are three spirals, the middle one having the strongest 

 granulations or tubercles ; there are also finer intermediate lines not always 

 visible. Some traces of the ornaments above described are noticed in the larger 

 shells (fig. 10 a). The section is triplicate, and similar to that of the preceding 

 species. 



Relations and Distribution. — Diff'ers from the Minchinhampton N. punctata^ 

 which has a spiral angle of 18°, in its more elongate form. The ornaments are 

 well cut and almost like tubercles — not merely finely granulated lines, as is the 

 case with most of the Nerinasas of the Inferior Oolite. Occurs sparingly at Great 

 Ponton, where so many of the Gasteropoda resemble species from the Great Oolite. 



144. NERiNiEA, triplicate species. Plate XIY, fig. 11. 



Specimens which may represent the apical conditions of the species referred to 

 N. StricMandi occur sparingly at Weldon, but the spiral angle is wider in this 

 form. The granulations are finer than those of the 2)sendopunctata-g:vou\), and 



27 



