504 
ACTIXOPTEETGTI. 
Genus CYCLOPOMA, A gassiz. 
[Poiss. Foss. Yol. iv. 1833, p. 17.] 
Scarcely distinguisliable from Lates, but preoperculum Tvithout 
spine at angle, its serrations gradually increasing in size downwards 
and the lowest and largest directed forwards. 
The species of this supposed extinct genus are referred to Lates 
by P. Sleeker, Archiv. l^eerland. vol. xi. (1876), p. 263. 
Cyclop oma gigas, Agassiz. 
1796. XaJrws G. S. Volta, Ittiolit. Veronese, p. ccii. pi. xlix. 
{errore). 
1796. Scorpcena, G. S. Volta, ibid. pi. Ixxiv. 
1833. Cyclopoma gigas, L. Agassiz, Poiss. Foss. vol. iv. p. 18, pi. ii. 
Type. Imperfect fish; Paris Museum of IX'atural History. 
The type species, attaining a length of about 0’5. Length of 
head with opercular apparatus about equal to maximum depth of 
trunk and contained four times in total length of fish. Posterior 
dorsal fin with 1 spine and 10 articulated rays, anal fin with 3 
spines and 8 articulated rays. 
Form. Log. Upper Eocene : Monte Bolca, H. Italy. 
P. 9462. Very large specimen, in fragments, in counterpart. 
History unknown. 
P. 2093, P. 4278. More fragmentary specimen, 0*40 in length, in 
counterpart. Egerton ^ Enniskillen Colls. 
A stouter fish, with larger head, not represented in the Collection, 
has also been described as follows :— 
Cyclopoma spinosum, L. Agassiz, Poiss. Foss. vol. iv. (1833), 
p. 20, pi. i. Scorpcena scrofa, G. S. Volta, Ittiolit. 
Veronese (1796), p. cxlv. pi. xxxiv. (errore). —Upper 
Eocene; Monte Bolca. [Imperfect fish ; Paris Museum 
of Hatural History.] 
Cyclopoma (?) micracanthum (Agassiz). 
1796. Holocentrus macidatus, G. S. Volta, Ittiolit. Veronese, p. ccxxxiv. 
pi. Ivi. fig. 3 (errore). 
1796. Amia indica, G. S. Volta, ibid. p. cxlix. pi. xxxv. fig. 4 (errors). 
1818. Amia indica^ H. D. de Blainville, Nouv. Diet. d’Hist. Nat. vol. 
xxvii. p. 347. 
1835. Smerdis micracantJms, L. Agassiz, Poiss. Foss. vol. iv. p. 33, 
pi. viii. figs. 1, 2. 
