338 MEMOIRS OF THE CARNEGIE MUSEUM. 



Toxotes (living). ' Toxotes ' antiquus Ag. 



Body rhomboid. Body compressed, fusiform. 



Back declivous from dorsal to snout. Back convex from dorsal to snout. 



Dorsal with 4 to 6 graduated stout Dorsal with several weak spines fol- 



spines followed by shorter branched lowed by longer branched rays. 



rays. 



Anal longer than dorsal, with 3 stout Anal much shorter than dorsal. 



spines. 



"The distinctive characters are not patent in the fossil nor in the figure of 



' Toxotes,' so that I cannot give the systematic position of either the fossil you 



have sent me, or of the so-called ' Toxotes ' antiquus. Like so large a proportion 



of other fossil fishes uncertainty must remain for the present." (C/. Appendix, 



p. 345). 



Family Pomacentrid^. 



This is a family of marine fishes, with skeleton closely similar to that of the 



Chromidae and Labridse. The narial opening is single on each side, and the scales 



are usually ctenoid. 



Genus Odonteus Agassiz. 



13. Odonteus sparoides Agassiz. 



(Plate XLVII, fig. 1) 



1839. Odonteus sparoides L. Agassiz, Poiss. Foss., Vol. IV, p. 178, PL XXXIX, fig. 2. 

 1898. Odonteus sparoides var. depressus F. Bassani, Palseont. Ital., Vol. Ill, p. 83, 



PL VIII, fig. 2. 

 1911. Odonteus sparoides C. R. Eastman, Mem. Carnegie Museum, Vol. IV, No. 7, 



p. 379, PL XCVII, fig. 1. 

 Type. — Imperfect fish; Paris Museum of Natural History. 

 This is an extremely rare form, only a few specimens of which are to be found 

 in European Museums, and two in the Carnegie Museum. One of these has 

 already been figured in volume IV of the Memoirs, and the second example is 

 shown of the natural size in Plate XLVII, Fig. 1. It bears the catalog number 

 5307, and is probably an immature individual. 



Family Percid^. 



Teeth small and conical, usually extending over inner bones of the mouth; 



pre-operculum serrated. Lower pharyngeal bones nearly always separate. Spinous 



portion of dorsal fin usually as much extended as the articulated portion; anal fin 



usually with one to three, rarely five to seven spines, nearly equal, and opposite 



