104. CRETACEOUS LAMELLIBRANCHIA. 
Mopiota, sp. 
1883. MopioLa PEDERNALIS (?), W. Keeping. Foss., ete., Neoc. Upware and 
Brickhill, p. 117, pl. vi, fig. 2. 
A portion of a left valve with the surface abraded, from the Lower Greensand 
of Upware, was regarded by Keeping as probably M. pedernalis, Romer. The 
imperfect character of the specimen makes this reference very doubtful. The shell 
also resembles M. autissiodorensis, Cotteau, from the Portlandian.’ 
Genus—CreENELLA, Brown, 1827. 
(‘Illust. Conch. Great Britain and Ireland,’ pl. xxxi, figs. 12—14.; ed. 2 (1844), p. 75, 
pl. xxiii, figs. 12—14.) 
CRENELLA BELLA (Sowerby), 1836. Plate XVII, figs. 12 a, b, 13 a—d. 
1836. Moprota seuua, J. de C. Sowerby. Trans. Geol. Soc., ser. 2, vol. iv, 
pp. 118, 158, 336, pl. xi, fig. 9. 
1844. Myrinus Cornuguianus, A. d’Orbigny. Pal. Franc. Terr. Crét., vol. in, 
p. 268, pl. ecexxxvu, figs. 1O—13. 
1845. — (Moprotus) Bexuus, EH. Forbes. Quart. Journ Geol. Soc, vol. i, 
p. 248. 
1850. Mrryius Cornuexianus, A. d’Orbigny. Prodr. de Pal., vol. 1, p. 81. 
1850. — BELLA, @’ Orbigny. Ibid., p. 138. 
1854. Moproua Bexua, J. Morris. Cat. Brit. Foss., ed. 2, p. 210. 
1855. Myrrius Cornuetianus, G. Cotteau. Moll Foss. de l’Yonne, p. 93. 
1858. — BELLUS, F. J. Pictet and EH. Renevier. Foss. Terr. Aptien (Mat¢r. 
Pal. Suisse, ser. 1), p. 118, pl. xv, fig. 10. 
1867. — — F. J. Pictet and G. Campiche. Foss. Terr. Crét. Ste. 
Croix (Matcr. Pal. Suisse, ser. 4), p. 502. 
1869. — —  P.de Loriol and V. Gilliéron. Mon. de ? Etage Urgonien 
Infér. du Landeron (Mém. Soc. Helvet. Sci. Nat., 
vol. xxiii), p. 17, pl. i, fig. 15. 
1871. Mopiona BELLA, F. Stoliczka. Paleont. Indica, Cret. Fauna 8. India, 
vol. ili, p. 372 (7 Crenella). 
1895. Myriius Cornvetrianus, G. Maas. Zeitschr. der deutsch. geol. Gesellsch., 
vol. xlvu, p. 266. 
1896. Mopioura Cornurniana, A. Wollemann. Zeitschr. der deutsch. geol. 
Gesellsch., vol. xlvin, p. 844. 
1900. — BELLA, A. Wollemann. Die Biv. u. Gastrop. d. deutsch. u. holland. 
Neocoms. (Abhandl. d. k. preuss. geol. Land., N. F., 
pt. 31), p. 69. 
1 De Loriol and Cotteau, ‘Mon. l’Etage Portlandien de Yonne’ (1868), p. 189, pl. xu, fig. 8. 
