CYPRINA. Ill 



Pictet and Roiix ' to ^ '. ' yn/r;/.s/.s, LcyiiiL'rie, ami Ijy Pictet and Cainpiclie - to (J. 

 anijulafa, Sowerby. English examples were identified with G. arifjiilala by J. de C. 

 Sowcrby, Forbes, and Morris, but were regarded by d'Orbigny as belonging to a 

 distinct species which he named G. Sowerhiji, and mentioned as types the 

 specimens collected by Fitton from the Hythe Beds near Folkestone. G. Soiverbyi 

 also resembles G. neocomiensu, d'Orbigny.^ 



Bhtribution.—Hyihe Beds of Hythe. Sandgate Beds of Pailiam Pai-k. Lower 

 Greensand between Atherfield and Blackganff. 



^^"'"O' 



Cyfkixa (Venilicardia) ANCiULATA {Sowcrhij), 181k Plate XXII, figs. 1— i. 



Text-figs. 23, 24. 



1814. Venus angulata, /. Sowerhy. Min. Conch., vol. i, p. 14-5, pi. Ixv. 



1828. Cyprina angulata, J. Flcmimj. Hist. Brit. Animals, p. 4-14. 



1836. — — J. de C. Sowerhi/. Trans. Gcol. Soc, ser. 2, vol. iv, 



p. 240. 

 1850. — —A. d'Orbiyiuj. Proclr. de Pal., vol. ii, p. 161. 



1854. — _ /. Morris. Cat. Brit. Foss., ed. 2, p. 199 (farlim). 



1870. — — i^. Stoliczka. Palaeout. Indica, Cret. Fauna S. India, 



vol. iii, p. 19.3. 



Non 1868. — - A. Briart and F. L. Cornet. Meule de Bracqiicgnies 



(Mem. cour. et Mem. dcs Sav. t'trangers, 

 vol. xxxiv), p. 68, pi. viii, figs. 26—28. 



Description. — Shell large, sub-quadrate, rounded, very inequilateral, moderately 

 inflated. Anterior margin rounded, passing quickly into the ventral margin, 

 with which it forms a regular and continuous curve. Posterior mai'gin more or 

 less truncated, slightly or moderately convex, usually olilique, and forming an 

 obtuse angle with the postero-dorsal margin. Uml)ones large, broad, anterior. 

 A more or less distinct carina passes from the umbo to the ])ostero-ventral 

 angle, cutting off a postero-dorsal area, which slopes rather rapidly to the posterior 

 margin. Lunular region more or less depressed, not limited. Escutcheon narrow, 

 deep, limited by a sharp carina. 



Ornamentation consists of growth-lines. 



In the right valve the posterior cai'dinal tooth is large and divided ; the 

 median cardinal is smaller than the anterior cardinal, and in most forms adjoins 



1 Pictet and Eoux, ' Moll. Foss. Grcs verts de Geuuve ' (1852), p. 444, pi. xxxiv, fig. 1. 



2 'Terr. Cret. de Ste. Croix ' (1865), p. 221. 



3 ' Pal. Franc. Ten-. Cret.,' vol. iii (1847), pp. 98, 759, pi. cclxxi. Afterwards referred U< C. 

 bemensis, Lejmerie, see d'Orbignv, ' Prodr. de Pal.,' vol. ii (1850), p. 77. 



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