CHiETODONTIDiE. 
559 
The following species have been described but are not repre- 
sented in the Collection : — 
Proantigonia longirostra, D. G. Eramberger, Had Jugoslav. Akad. 
vol. cvi. (1891), p. HO. Metoponichthys longirostris , 
D. G. Eramberger, Beitr. Paliiont. Oesterr.-Ungarns, 
vol. ii. (1882), p. 104, pi. xxiv. fig. 1. — Upper Miocene ; 
Dolje, Croatia. [Type species of Metoponichthys. Im- 
perfect fish ; Geological Museum, University of Agram.] 
Proantigonia octacantha , D. G. Eramberger, loc. cit. 1891, p. Ill, 
pi. ii. fig. 1. Metoponichthys octacanthus, D. G. Eram- 
berger, loc. cit. 1882, p. 100, pi. xxiv. fig. 2. — Ibid. [Ditto.] 
Proantigonia radobojana, D. G. Eramberger, loc. cit. 1882, p. 131, 
pi. xxvii. figs. 5, 6. — Upper Miocene ; Radoboj, Croatia. 
[Type species. Ditto.] 
Proantigonia steindachneri, D. G. Eramberger, loc. cit. 1882, 
p. 132, pi. xxvii. fig. 7, and loc. cit. 1891, p. Ill, pi. ii. 
fig. 2 (scale only). — Ibid. [Ditto.] 
Genus EPHIPPUS, Cuvier. 
[Itegne Animal, vol. ii. 1817, p. 335.] 
Snout short, with upper profile parabolic owing to hyperostosis 
of cranial roof ; no palatine or vomerine teeth ; preoperculum finely 
serrated but without spine. Pectoral fins small, not falciform; 
dorsal fin deeply notched between spinous and articulated portions, 
the former not scaly but comprising 8 or 9 spines, of which the 
m >ddle are the- longest ; 3 anal fin-spines ; caudal fin truncate or 
slightly emarginate. Scales small and regularly arranged. 
Existing in the tropical Atlantic and Indian Oceans. 
Ephippus rhombus (Blainville). 
1796. Chcetodon mesoleucus, G. S. Volta, Ittiolit. Veronese, p. xli. pi. x. 
fig. 1 ( errore ). 
1796. Chcetodon chirurgus , G. S. Volta, ibid. p. clxxvii. pi. xliii. 
(errore). 
1818. Chcetodon chirtirgus, H. D. de Blainville, Nouv. Diet. d’Hist. 
Nat. vol. xxvii. p. 853. 
1818. Chcetodon rhombus, H. D. de Blainville, ibid. p. 353. 
1823. Chcetodon rhomboides, J. F. Kruger, Gesch. Urwelt, pt. ii. 
p. 671. 
1842-44. Ephippus longipennis, L. Agassiz, Poiss. Foss. vol. iv. pp. 15, 
225, pi. xl. [Imperfect fish ; Paris Museum of Natural Ilistorv.] 
1859. Ephippus longipennis, A. B. Massalongo, Specimen Photogr. 
Anim. Foss. Agr. Veron. p. 34, pi. ix. 
