CARD! UM. 205 



Cakdium, sp. Plate XXXII, fig. 16 a, b. 



1897. Cakdium, sp. cf. cenomanense, H. Woods. Quart. Journ. Geol. Soc, vol. 



liii, p. 389, pi. xxvii, figs. 23, 24. 



Internal casts, similar in form to G. cenomanense, d'Orbigny, are found in the 

 Chalk Rock of Cuckhamsley. A part of the shell is imperfectly preserved on one 

 specimen and is ornamented with fine radial ribs. A cast measures : height, 8 mm.; 

 length, 8 mm.; thickness, 7'5 mm. 



Caedium, sp. Plate XXXII, fig. 17 a — c. 



Two internal casts from the Chalk of Norwich (one of which was found by the 

 late T. G. Bayfield) are in the British Museum (Nos. L 19448, L 20103). The shell 

 is much inflated, so that the height and thickness are approximately equal ; the 

 height is considerably greater than the length. The umbones are prominent. 

 The postero-dorsal part of the shell is flattened and shows indications of fine radial 

 ribs. 



This species shows some resemblance to C. ventricosum, d'Orbigny, 1 but is 

 relatively higher. 



Sub-genus — Geanocaedium, W. M. Gabb, 18G9. 

 (" Geol. Survey California," ' Palseout.,' vol. ii, p. 266.) 



Caedium (Geanocaedium) peuuoscideum, Sowerby, 1817. Plate XXXII, figs. 18, 19; 



Plate XXXIII, figs. 1— 3. 



1816. Cardita tubekculata, /. Sowerby. Miu. Couch., vol. ii, p. 97, pi. cxliii. 



(Non Cardium tuberculatum, Linuaeus). 

 1S17. Cakdium proboscideum, /. Sowerby. Miu. Couch., vol. ii, p. 127, pi. clvi, 



fig. 1. 

 1835. — Centianum, J. de C. Sowerby. Ibid. (Systematical Iudex), vol. vi, 



p. 242. 

 1854. — proboscideum, J. Morris. Cat. Brit. Foss., ed. 2, p. 193. 



— — Gentianum, Morris. Ibid., p. 192. 



1866. - - proboscideum, F. J. Pictet and G. Campiche. Toss. Terr. Cret. 



Ste. Croix (Mater. Pal. Suisse, 

 ser. 4), p. 269. 



1 C. ventricosum is recorded from the Upper G-reeusaud (zoue of Pecten asper) of Lulworth by 

 Barrois ('Terr. Cict. Super, de l'Angleterre et de FIrelande,' 1876. p. 92 J. I have not seen auy 

 Euglish example of tbat species. 



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