132 CLASS XIV. 



To this genus belongs also, according to Hkckel, Sparus chromis L., 

 Chromis castanea Cuv., Helioses chromis nob., Rondelet De Piscibus, 

 p. 152, Cuv. R. Ani., ed. ill., Poiss. PI. 90, fig. i ; a small fish, of dark 

 brown or black colour, found in the Mediterranean Sea. Since this species 

 was the first that caused Cuvier to form the genus Chromis {Mem. du Mus. I. 

 p. 353) Heckel would allow it to retain the name Chromis. 



Dascyllus Cuv. Teeth conical, numerous. Body compressed, 

 broad. Prseoperculum denticulate. Branchiostegous membrane 

 with five or six rays. Caudal fin bilobed. 



Sp. Dascyllus aruanus, Ch(stodon aruanus L. Mus. Adolphi Frider. Tab. 33, 

 fig. 8, Bloch Ichth. Tab. 198, fig. 2 ; — Dascyllus niyer Bleeker, Pomci' 

 centrals trimacidatus Rueppel, from the Red and Indian Seas, &c. 



2) Single roio of maxillary teeth. 



OlypJiisodon Lac. Teeth equal, with margin acute, often ex- 

 sert. Branchiostegous membrane with six rays. Proeoperculum 

 with margin entire. Caudal fin forked or bilobed. 



Sp. Glyphisodon ccelestinus Cuv., Labrus sexfasciatus Lac. Poiss. ill. PI. 19, 

 fig. 2, Cuv. e< Val., Poiss. v. PI. 135; from the Indian Sea and Southern 

 Pacific ; with numerous other species from the eastern and some from the 

 western hemisphere. 



Pomacentrus Lacep. (excl. of species), Cuv. Teeth small. 

 Branchiostegous membrane with four rays. Prajoperculum den- 

 ticulate. Operculum entire. Caudal fin excised, or bifurcate. 



Sp. Pomacentrus pavo Lac, Cuv., Chietodon pavo Bloch, Ichth. Tab. 198, 

 fig. I. Cuv. R. Ani., ed. ill., Poiss. PI. 32, fig. 3 ; from the Indian 

 Sea, &c. 



Premnas Cuv. Teeth obtuse. Prgeoperculum denticulate. Sub- 

 orbital bone with one spine or two directed backwards. Branchio- 

 stegous membrane with six rays. Caudal fin rounded. 



Sp. Premnas trifasciatus Cx}V., Chcetodon hiactdeatus'BhOCB, Ichth. Tab. 2jg, 

 fig. 2, ScHLEG. and S. Mueller 1. 1, Tab. 5, fig. 5 ; Premnas semicinctus 

 Cuv. et Val. Poiss. v. PI. 133, fig. i ; both from the Indian Sea at the 

 Sunda Isles. 



Amphiprion Bl., Schn. (excl. of several species). Teeth coni- 

 cal, obtuse, small. Operculum, suboperculum and prasoperculum 

 striate, with margin serrate. Branchiostegous membrane with five 

 rays. Caudal fin rounded. 



Sp. Amphiprion ephippium Schn., Cuv,, Lutjanus Ephippium Bloch Ichth. 

 Tab. 250, fig. 2, at Java; — Amphiprion percula Cuv., Bloch Ichth, 

 Tab. 316, fig. 3 ; at Java, Sumatra and Celebes, &c. 



