CARDITD^. 53 



Protocardium discors^ Lamarck, 1 805 and 1807. 



Cardium disco7-s. 

 Ann. Mus. 180-5, vol. 0. p. 342; 1807, vol. 0. pi. xvii. figs. lO^ 10". 



Cardium Parisiense. 

 Prod. Pal. Strat. 1850, vol. 2. p. 387. 



Horizons and Localities. 



Upper Eocene. — Barton Beds. Barton. 



Middle Eocene. — BracMesham Beds. Pliintingbridge. 



Protocardituu Edwardsii, Deshaycs, 1860. 



Cardium semifiranulatum. 

 Coq. Foss. Paris, 1824, vol. 1. pi. xxviii. figa. C, 7, p. 174. 



Proiocardizim Edwardsii. 



Desc. Anim. sans Vert. 1860, vol. 1. p. 571. 



Horizon and Locality. 



Lower Eocene. — Thanet Sands. Heme Bay. 



Protocardium fraudator, De8ha3'es, 1860. 



Brotooardiumfraudator. , 



Desc. Anim. sans Vert. 1860, vol. 1. pi. liv. fig.^. 7, 8, p. .570. 



Horizons and Localities. 

 Oligocene. — Headon Beds. Brockenhurst. 

 Upper Eocene. — Barton Beds. Barton ; High Cliff', 

 ^liddle Eocene. — BrackUsham Beds. Bram.shaw. 



Protocardium Hantoniense (Edwards, MS.), A. von Koenen, 1807. 



Cardium Hantoniense. 

 PaliBontographica, 1867, vol. xvi. pi. xiii. figs. 7"-7', p. 1.54. 



Horizon and Localities, 

 Oligocene. — Headon Beds. Whitley Ridge ; Brockenhurst. 



Protocardium Homesi, Deshayes, 1860. 



Protocardium Hornesi. 

 Desc. Anim. sans Vert. 1860, vol. 1. pi. liv. figs. 9-11, p. -574. 



Horizon and Localities, 



Lower Eocene. — London Clay. Alum Bay (no. 4 Bed); Portsmouth. 



Protocardium Laytoni, Morris, 1854. 



Cardium Laytoni. 

 Quart. Journ. Geol. Sec. 1854, vol. x. pi. ii. figs. 1, 2, p. 1^. 



Horizon and Localities. 

 Lower Eocene. — Woohoich Beds. Upnoi ; near Heme Bay. 



Protocardium nitens, .1. Sowerby, 1813. 



Cardimn nilens. 

 Mineral C'onchology, 1813, pi. 14 (5 lower figures). (Sowerby Coll.) 



Horizon and Localities. 

 Lower Eocene. — London Clay. Primrose Hill ; Hampstead Well ; High- 

 gate; Holloway; Newnham. 



