carixgjm:. 
433 
40525-26. Vertebral centra and thickened clavicles and other 
hones; Crag, Norfolk. Purchased, 1867 . 
^•1981. Similar remains, including so-called “butterfly hone”; 
Crag, Norfolk. Egerton Coll. 
£• 8992, P. 8995-98, P. 8998. Similar remains ; Norwich Crag, 
Southwold, Suffolk. Presented hy Lady Prestwick , 1896. 
P - 8024. Two thickened clavicles ; Norwich Crag, Easton Bavent, 
Suffolk. Purchased, 1897. 
£• 7381. Thickened hone. Prestwick Coll. 
p - 8704-07. P. 8736. Numerous similar thickened bones, including 
so-called “ butterfly bone ” figured by Newton, op. cit. 
1882, pi. xix. fig. 2 ; Forest Bed Series, near Cromer, 
Norfolk. Savin Co11 - 
Detached bones from the Lower Pliocene (Crag) of Antwerp, 
similarly thickened by hyperostosis, have been named Platax costatus, 
I ■ cuneus, P. pileum, and P. physeteroide, by P. J. ^ an Beneden, 
Dull. Acad. ltoy. Belg. [3] vol. i. (1881), pp. 119-125, figs. 1-5. 
Extinct species of this genus have also been described as follows, 
l)ut ar e not represented in the Collection : — 
Platax papilio, L. Agassiz, Neues Jahrb. 1835, p. 292, and Poiss. 
Foss. vol. iv. (1835-42), p. 245, pi. xlii. Chatodon papilio, 
6. S. Volta, Ittiolit. Veronese (1796), p. cxiv. pi. xxvi. 
fig. 1, and H. D. de Blainville, Nouv. Diet. d’Hist. Nat. 
vol. xxvii. (1818), p. 355.— Upper Eocene ; Monte Bolca, 
near Verona. [Imperfect fish ; Paris Museum of Natural 
History.] 
Platax pinnatiformif : Chcetodon ? pinnatifornm, H. D. de Blain- 
ville, loc. cit. 1818, p. 351. Platax, Cuvier & Valenciennes, 
Hist. Nat. Poiss. vol. vii. (1831), p. 239. Chcetodon pin- 
na tus, G. S. Volta, op. cit. 1796, p. xiii. pi. iv. (err ore). 
Platax altissimus, L. Agassiz, loc. cit. 1835, p. 291, and 
op. cit. vol. iv. (1839-42), p. 249, pi. xU.— Ibid. [Ditto.] 
Platax plinianus, A. B. Massalongo, Specimen Photogr. Anim. 
Foss. Agr. Veron. (1859), p. 29, pi. v. Ibid. 
Platax subvesper tilio : Chcetodon subvesperlilio, H. D. de Blainville, 
loc. cit. 1818, p. 352. Chcetodon vespertilio, G. S. Volta, 
op. cit. 1796, p. xxv. pi. vi. (errors). Platax macro- 
pteryyius, L. Agassiz, loc. cit. 1835, p. 291, and op. cit. 
vol. iv. (1839-42), p. 247, pi. xli a.— Ibid. [Ditto.] 
