CATALOG OF FOSSIL FISHES IN THE CARNEGIE MUSEUM 379 
1835. Serranus ventralis L. Agassiz, ibid., p. 293 (name only). 
1839. Serranus ventralis L. Agassiz, Poiss. Foss., Vol. 4, p. 104, pl. XXIIIb 
(lower figure). (Imperfect fish; Paris Museum of Natural History). 
1839. Sparnodus elongatus L. Agassiz, ibid., p. 165, pl. XXVIII, fiowede 
1901. Sparnodus elongatus A. 8. Woodward, Brit. Mus. Cat. Fossil Fishes, pt. 
IV, p. 526. 
Type.—Imperfect fish; Paris Museum of Natural History. 
The following mentioned specimens in the collection are referable to this 
species: 4540, 4541, 4541a, 4542, 4542a, 4416, 4447. Nos. 4416 and 4542 are 
illustrated in the accompanying plates. 
Family PoMACENTRIDA. 
Genus. OponrEus Agassiz. 
To this extinct genus have been assigned two small-sized species from the 
Eocene of Monte Bolea, neither of which is represented in the collections of the 
British Museum, and only the following one is in the Carnegie Institute. 
41. Odonteus sparoides Agassiz. (Plate XCVII, fig. 1.) 
1839. Odonteus sparoides L. Agassiz, Poiss. Foss., Vol. IV, p. 178, pl. XX XIX, 
fig. 2. 
1876. Odonteus sparoides F. Bassani, Atti Soc. Veneto-Trent. Sci. Nat., Vol. IT, 
jaye h7Aoy 
1898. Odonteus sparoides, var. depressus F. Bassani, Palsont. Italica, Viol; SEL 
[Ob tstoy, lk WAL ies ates 
Type.—Imperfect fish; Paris Museum of Natural History. 
One example of this rare form is preserved in the collection, cataloged as No. 
4208. It is shown of the natural size in Plate XCVII, fig. 1. 
Division D. CHATODONTIFORMES. 
As Perciformes, but brain-case very short, and facial region of skull much 
produced, with terminal small mouth. 
Family CHmToponrTipé&. 
This group comprises about two hundred living marine species from the tropics, 
mostly of small size and remarkable for their singular forms and markings, and 
brilliant coloration. They are particularly abundant about volcanic rocks and 
coral reefs. 
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