558 
ACTINOPTEKTGII. 
41994. Imperfect small fish. Purchased, 1870. 
P. 498, P. 3922. Imperfect fish in counterpart, shortened by dis¬ 
tortion, described by Agassiz as the type specimen of the 
so-called Pygaeus gihbus. Egerton EnnisJciUen Colls. 
The following species, which are not represented in the Collection, 
have also been ascribed to this genus, but they are very imperfectly 
known :— 
Pygceus dorsalis, L. Agassiz, Neues Jahrb. 1835, p. 302, and 
Poiss. Foss. vol. iv. (1838-42), pp. 16^, 255, pi. xliv. 
fig. 1.—Upper Eocene; Monte Bolca. [Imperfect fish ; 
Palaeontological Museum, Munich,] 
Pygaeus gigas, L. Agassiz, loc. cit. 1835, p. 302, and tom. cit. 
<>^'1838-44, pp. 16, 252, pi. xx. Sjoarus holcanus, G. S. 
Volta, Ittiolit. Veronese (1796), p. ccxliii. pi. lix, Lahrus 
'punctatus, G. S. Volta, ihiP. clxxxix. pi. xlvi. (errore). 
Lahrus rectifrons and L. punctatus, H. D. de Blainville, 
Nouv. Diet. d'Hist. Nat. vol. xxvii. (1818), p. 351.—Ibid. 
[Imperfect fish ; Paris Museum of Natural History.] 
Pygceus nohilis, L. Agassiz, loc. cit. 1835, p. 302, and tom. cit. 
1833-42, pp. 17, 253, pi. xliv. figs. 6, 7. Choetodon 
canus, G. S. Volta, op. cit. 1796, p. cclxx. pi. Ixv. fig. 1 
{errore'). —Ibid. [Imperfect fish; Palaeontological Museum, 
Munich.] 
Pygceus nuchalis, L. Agassiz, loc. cit. 1835, p. 302, and tom. cit. 
1838-44, j)p. 16*, 255, pi. xliv. fig. 2.—Ibid. [Ditto.] 
Pygceus ohlongus, L. Agassiz, t077i. cit. 1838-44, pp. 16*, 254, 
pi. xliv. figs. 3, 4.—Ibid. [Imperfect fish.] 
Pygceus zignoi, F. Bassani, Atti E. Accad. Sci. Napoli [2] 
vol. hi. (1889), no. 6, p. 93, pi. xvii.—Lower Miocene ; 
Chiavon, Vicentin. [Imperfect fish; Zigno Coll., Uni¬ 
versity of Padua.] 
Genus PROANTIGONIA, Eramberger. 
[Beitr. Palaont. Oesterr.-Ungarns, vol. ii. 1882, p. 130.] 
Syn. Metoponichthys, D. G. Kramberger, loc. cit. 1882, p. 104. 
An imperfectly known extinct genus comprising small species 
with large head and snout not much produced. Preoperculum 
with small spines at angle, and supraclavicle serrated. Spinous 
portion of dorsal fin much more elevated and extended than 
articulated portion ; pelvic fin-spine very large, accompanied by 5 
articulated rays. Scales thin, bearing few spinous tubercles. 
