PISCES. 131 



CicJila Bl., Schn, (excl. of some species). Maxillary teetli 

 small, thin, crowded, forming a broad "band, with no front row of 

 larger teeth. Body oblong. Scales small. Lateral line abruptly 

 deflected, or interrupted. 



a) With prseoperculum entire. Ckhla Heck. Habitus of Perca. 



Sp. Ciclila hrasiliensis, Perca hrasiliensis, Bloch IcJuJi. Tab. 310, fig. 2, &c. 



b) With prseoperculum denticulate. CvemcicJda Heck. Hahitm of Esox. 



Sp. CicJda saxatiUs, Sparus saocatilis L., Gronov. Mus, Ichth. 1, p. z^, ibid, 

 and Zoophl. Tab. VI. fig. 8 ; a brcvvn stripe behind the eye above the 

 operculum, and a black oval spot bordered with white in front of the 

 caudal fin ; from Surinam. 



Family XXIX. Pomacentrini. Inferior pharyngeal bone un- 

 paired, without longitudinal suture, with teetli conical or subulate, 

 acute. Dorsal fin single. Ventral fins placed under pectorals. 

 Scales large, ctenoid. Rays of branchiostegous membrane 4 — 6. 

 Pseudobrancliia\ Lateral line convex, ending at the termination of 

 dorsal fin. 



This family, which contains marine fishes alone, whilst the pi-e- 

 ceding consists of river-fishes, is also distinguished by the absence 

 of lips or folds of skin around the jaws. Cuvier I'eferred the 

 genera belonging to it to the Scicenoids ; Heckel first pointed out 

 their afiinity with the Lahroids, Ann. des Wiener Museums, 11. p. 330. 

 By far the greatest ntimber of species belong to the Indian seas. 

 Comp. H. ScHLEGEL and S. Mueller in Verhandelingen over de 

 Natuurlijke Geschiedenis der Nederlandsche Overzeesche Bezittingen; 

 Vischen,\.\. 17—25. 



Most of the species are striped with broad bands across the body, of 

 a white or darker colour, strongly contrasting with the ground-colour, 

 which in the first case is blackish, in the other white. They are all 

 small, or only of moderate size. 



i) Several rows of maxillary teeth. 



Heliases Cuv. Teeth thin, conical, those of front row larger 

 than the rest. Body compressed, broad. Praeoperculum with 

 margin entire. Branchiostegous membrane with five rays. Ventral 

 fins acuminate. Caudal fin forked. 



Sp. Heliases insolatus Cuv. et Val, Poiss. v. PI. 137, from the Antilles, one 

 of the few species of this family from the W. Hemisphere ; — Heliaces 

 cinerascens Cuv. et Val., Schi-eg. and S. Mueller 1. 1. PI. 6, fig. 5, from 

 Java, &c. 



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