158 CRETACEOUS LAMELLTBRANCHTA. 



1842. Caedium gallopeovinciale, P. Matheron. Catal. Foss. du Depart, des 



Bouehes-du-Ehone, p. 155, 

 pi. xvii, figs. 1, 2. 



1844. Coebis coedifoemis, A. d'Orbigny. Pal. Franc. Terr. Oct., vol. iii, p. Ill, 



pi. celxxix. 



1845. coeeugata, E. Forbes. Quart. Journ. G-eol. Soc, vol. i, p. 239. 

 1850. d'Orbigny. Prodr. de Pal., vol. ii, p. 78. 



1854. Sph^ea J. Morris. Cat, Brit. Foss., ed. 2, p. 224. 



1855. Coebis G. Cotteau. Moll. Foss. de l'Yonne, p. 80. 



1856. F. J. Pictet and E. Renevier. Foss. Terr. Aptieu (Mater. 



Pal. Suisse, ser. 1), p. 76, pi. viii, 

 %• 3. 

 1859. — coedifoemis, J. Vilanova-y-Piera. Mem. geog.-agric. de Castellon, 



pi. iii, fig. 13. 



1865. coeeugata, H. Coquand. Mon. Apt.ien de l'Espagne, p. 116. 



1866. Fimbeia F. J. Pictet and G. Campiche. Foss. Terr. Cret. Ste. 



Croix (Mater. Pal. Suisse, 

 ser. 4), p. 279. 

 1869. PALiEocoEBis coedifoemis, T. A. Conrad. Amer. Journ. Conch., vol. v, 



p. 101. 

 1871. Sph^eea coeeugata, F. Stoliczka. Palaebnt. Indica, Cret, Fauna S. India, 



vol. iii, pp. 247, 252. 

 ? 1877. Coebis cf. coeeugata, G. Bbhm. Zeitschr. d. deutscli. geol. G-esellsch., vol. 



xxix, p. 240. 

 1897. coeeugata, K. Gerhardt. Neues Jalirb. fiir Min., etc., Beil.-Bd. xi, 



p. 186. 

 1899. Fimbeia A. Wollemann. Zeitschr. der deutscli. geol. Gresellsch., 



vol. Ii, p. 592. 



Description. — Shell large, stout, inflated, subglobular, slightly inequilateral, 

 height and length nearly equal. Anterior margin rounded, forming an angle with the 

 hinge-margin, and passing gradually into the ventral margin with which it forms 

 a regular curve. The ventral margin curves rapidly towards the posterior margin, 

 which makes an obtuse angle with the hinge-margin. Lunule flattened or depressed, 

 with a swollen lower margin which is separated from the rest of the valve by a 

 furrow. Escutcheon triangular, limited by a furrow which passes from the umbo 

 to the posterior margin. Umbones large, prominent, curved anteriorly. Ornamen- 

 tation consists of broad, strong, unequal, concentric ridges which are more numerous 

 on the middle than on the anterior and posterior parts of the shell. The concentric 

 ridges are crossed by numerous, small, radial ribs. 

 Measurements : 



(1) (2) (3) (4) 



Length 95 . 84 . 80 . 70 mm. 



Height 93 . 83 . 77 . 68 „ 



(1 — 1) Lower G-reensand, Atherfield. 



