210 GASTEROPODA OF THE INFERIOR OOLITE. 



more like those of other species from the Inferior Oolite. The number of spirals 

 is four. It probably represents apical conditions merely. 



145. Neein^a, cf. ELEGANTULA, D'Orbigny, 1850. Plate XIV, fig. 12. 



1850, NERiNiEA ELEGANTULA, D'Orh. Prodrome, i, p. 298. 



1852. — — — Terr. .Turass, vol. ii, p. 88, pi. ccliii, figs. 



5 and 6. 



Description. — Spiral angle about 12°, length 22 mm. The number of whorls 

 about fourteen, narrow, flat, and increasing by steps; the posterior margin of each 

 whorl is occupied by a prominent belt, the suture lying in the depression imme- 

 diately above. In the earlier whorls are two tuberculated spiral lines, the lower 

 one being the stronger ; these increase in number up to four, the one towards 

 the centre having the largest tuberculations. Section triplicate. Rare at Great 

 Ponton. 



N.B. — This concludes the list of triplicate Neringeas. The identification of the 

 species from the upper beds of the Lincolnshire Limestone at Weldon and Great 

 Ponton is far from satisfactory, and yet the fossils are too imperfect in the majority 

 of cases for one to venture on making many new species. The forms clearly have 

 Bathonian aflBnities, and yet are not exactly Bathonian species. The ornaments 

 in two or three cases are more of the nature of tuberculations than is usual with 

 species in the Inferior Oolite. 



Section D (Quadeiplicaive). 

 146. Neein^a ciNGENDA, PkHUps, 1829. Plate XIV, figs. 13 a~f, 14. 



1829 and 1835. Tueeitella cingenda, Sowerhy. Phillips, Geol. of Yorksli. 



Coast, p. 164, pi. xi, figs. 28 and 29. 

 1836. Nerin^ea CINGENDA, Phil. Bronn, in Neues Jahrbuch for 1836, p. 558. 

 1875. _ _ _ G-eol. of Yorksh. Coast, 3rd edition, p. 258, 



pi. xi, figs. 28 and 29. 

 1884. — — — Hudleston, iu Geol. Mag., dec. 3, vol. i,p. 110, 



pi. iv, figs. 3 and 4. 



Description. — Since this species exhibits a considerable amount of dimorphism, 

 both the proportions and external markings are subject to some variation. 

 Spiral angle (subapical) . . .7^ 



7^ 



