MODIOLA. 97 
Distribution.—Perna-bed of Atherfield. Upper Greensand of Potterne. Chlo- 
ritic Marl of Warminster. ? Cenomanian of Wilmington (fragment only seen). 
Mopriona ruGosa, Mémer, 1836. 
1836. 
1841. 
1850. 
1867. 
1896. 
1900. 
Moproua ruGosa, I’, A. Rimer. Die Verstein. nord-deutsch. Oolithengeb., 
p- 93, pl. v, f£. 10. 
— _ -- Die Verstein. nord-deutsch. Kreidegeb., 
p. 67. 
Miry.us susruaosus, A. d’Orbigny. Prodr. de Pal., vol. ii, p. 81. 
Myritus (Mopiota) ruaosus, Ff. J. Pictet and G. Campiche. Foss. Terr. 
Crét. Ste. Croix (Matér. Pal. Suisse, 
ser. 4), p. 508. 
Moptoua ruGosa, A. Wollemann. Zeitschr. d. deutsch. geol. Gesellsch., 
vol. xlviui, p. 845. 
a _- = Die Biv. u. Gastrop. d. deutsch. u. 
hollind. Neoc. (Abhandl. d. k. preuss. 
geol. Land., N. F., pt. 31), p. 64. 
Remarks.—A specimen 45 mm. long, with the umbones broken, is in the 
Leckenby Collection (Woodwardian Museum), and belongs, I think, to this species. 
Type. 
From the Hilsthon of the Eligser Brink. 
Distribution.—Crackers of Atherfield. 
Moptona sussimpeiex (d’Orbigny), 1850. Plate XVI, figs. 7, 8, 9a, b, 10a, b. 
Moprota simpLex, G. P. Deshayes. In A. Leymerie, Mém. Soe. géol 
France, vol. v, pp. 8, 26, pl. vii, fig. 8 (non Mytilus 
simplex, Detrance, 1824; Passy, 1832). 
Myritus — A. @Orbigny. Pal. Franc. Terr. Crét., vol. in, p. 269, 
gny g if 
pl. ccexxxviii, figs. 1—4. 
Myriivus (Moptouus) stmpex, EF. Forbes. uart. Journ. Geol. Soc., vol. i, 
> 
p. 248. 
Miry.us sussimpxex, A. d’Orbiqny. Prodr. de Pal., vol. ii, p. 81. 
Myrixus curairis, F. J. Pictet and W. Rouw. Moll. Foss. Grés verts de 
Gentve, pp. 481, 551, pl. xl, fig. 2. 
Mopioua simPLex, J. Morris. Cat. Brit. Foss., ed. 2, p. 211. 
Myrinus subsImMPLEX, G. Cotteau. Moll. Foss. de l’Yonne, p. 94. 
Je 
~ 
= — F. J. Pictet and HE. Renevier. Foss. Terr. Aptien 
(Matér. Pal. Suisse, ser. 1), p. 114, pl. xvi, fig. 3. 
— = P. de Loriol. Anim. Invert. Foss. Mt. Saltve, p. 92, 
pl. xi, fig. 9. 
13 
