PERCID^. 
503 
with opercular apparatus about equal to the maximum depth of the 
trunk, which slightly exceeds one third the total length to the base 
°f the caudal fin. Anterior dorsal fin with 7 spines, posterior dorsal 
" ‘th 1 spine and 12 articulated rays, the third spine being stoutest 
a nd longest, its length somewhat exceeding half the depth of the 
trunk at its insertion ; anal fin with 3 spines and 8 articulated 
ra >'8, the spines being relatively short, the second stouter than the 
third but of equal length. 
Form. § hoc. Upper Eocene : Monte Bolca, N. Italy. 
3918. Well-preserved fish labelled by Agassiz, displaying all the 
fins except the pectorals. Enniskillen Coll. 
2095, P. 3918 a. More imperfect larger specimen, in counter- 
part, showing serrated suborbital plate. 
Egerton 4' Enniskillen Colls. 
19007. Imperfect distorted large specimen. Purchased, 1845. 
1913. Imperfect fish displaying fins, preopercular spines, and 
seven branchiostegal rays. Egerton Coll. 
P- 9461. Smaller specimen, in counterpart. 
Presented by the Earl of Aylesford, 184/. 
1913 a, P. 3918 b. Imperfect fish deepened by distortion, 
labelled “ Lutes gracilis, Ag.” by Agassiz. 
Egerton $ Enniskillen Colls . 
^7225. More imperfect small specimen, similarly distorted. 
Purchased, 1863. 
1913 b, P. 3918 C. Fragmentary remains of fish about 0 - 12 in 
length, in counterpart. Egerton & Enniskillen Colls. 
The following extinct species, not represented in the Collection, 
avo also been referred to this genus : — 
^tes macropterus, F. Bassani, Atti E. Accad. Sci. Napoli [2] vol. 
iii. (1889), no. 6, p. 51, pi. iv. fig. 5.— Lower Miocene ; 
Chiavon, Vicentin. [Imperfect trunk ; Zigno Collection, 
University Geological Museum, Padua.] 
Lates macrurus, L. Agassiz, Poiss. Foss. vol. iv. (1833-34), p. 29, 
pi. vi.— Middle Eocene (Calcaire Grossior) ; Sevres, Paris. 
[Imperfect fish ; Paris Museum of Natural History'.] 
Lates partschi, ,T. J. Heckel, Denkschr. k. Akad. Wiss., math.- 
naturw. Cl. vol. xi. (1856), pt. i. p. 265, pi. xv. fig. 1.— 
Middle Miocene; Breitenbrunn, Vienna. [Fragmentary 
fish ; Court Museum, Vienna.] 
