CATALOG OF FOSSIL FISHES IN THE CARNEGIE MUSEUM 359 
of the Scombresocide to the Atherinids is based on a number of resemblances 
which do not in my opinion indicate affinity. The Percesoces are more specialized 
than the Scombresocide in that spinous fin-rays are developed, and features in 
which the Atherinide approximate to the Scombresocide appear to have been 
evolved within the order Percesoces rather than to be those of the prototype of 
the group.” 
Family ATHERiInipz (Silversides). 
Genus RHAMPHOGNATHUS Agassiz. 
This genus, which is identical with Mesogaster Agassiz, is with difficulty 
distinguished from various existing Atherinine genera, such as Chirostoma, Men- 
idia, and Atherinoides. The modern forms are mostly marine and of small size. 
8. Rhamphognathus paralepoides Agassiz. 
1796. Esox sphyrena, G. 8. Volta, Ittiolit. Veronese, p. 107, pl. XXIV, fig 2 
(errore). 
1796. Hsox saurus, G. 8. Volta, zbid., p. 206, pl. I, fig. 2 (errore). 
1796. Ammodytes tobianus, G. 8. Volta, ibid., p. 220, pl. LIII, fig. 3 (errore). 
1818. Ammodytes tobianus, H. D. de Blainville, Nouv. Dict. d’Hist. Nat., Vol. 
XXVII, p. 360. 
1835. Rhamphognathus paralepoides, L. Agassiz, Neues Jahrb., p. 292 (name 
only). 
1839-44. Rhamphognathus paralepoides, L. Agassiz, Poiss. Foss., Vol. V, pt. I, 
p. 104, pl. XX XVIII, fig. 1 (R. pompilius on plate). : 
1876. Rhamphognathus paralepoides, F. Bassani, Atti Soc. Veneto-Trent. Sci. 
Nat., Vol. III, p. 186. 
1898. Rhamphognathus paralepoides, F. Bassani, Paleont. Italica, Vol. III, p. 81, 
pl. EXe fig 3: 
Type.—Imperfect fish; Paris Museum of Natural History. 
This species is not represented in the British Museum. One fine example in 
counterpart is preserved in the Bayet Collection, cataloged as No. 5241, 5241a. 
It has a total length of 19 em. and has all the fins intact. 
Family SpHyranipa (Barracudas). 
Genus SpHyrana (Artedi) Bloch and Schneider. 
A figure of the skeleton of Sphyrena is given by Agassiz in Vol. 5, pl. F, of his 
Poissons Fossiles. 
9. Sphyrena bolcensis Agassiz. 
1796. Hsox sphyrena, G. 8. Volta, Ittiolit. Veronese, p. 107, pl. XXIV, fig. 1. 
1796. Perca punctata, G. 8. Volta, ibid., p. 208, pl. LI, fig. 1 (errore). 
