Ql'EENSLAND FISHES.— McCULLOCH. 169 



d. At least some of the opereles serrated. 



e. All the opereles serrated . . . . . . . . . . . . . . Amphiprion. 



ee. Only the preoperculum and sometimes the preorbital serrated. 

 /. 12-13 dorsal spines. 



g. Less than 30 transverse series of scales . . . . . . . . Dascyllus. 



gg. More than 30 transverse series of scales . , . , , . . . Lepidozygus. 



ff 17 dorsal spines .. .. .. .. .. .. Acanthochromis. 



dd. None of the opereles serrated. 



h. Lateral line not developed on the tail . . . . . . . . Chromis. 



hh. Lateral line almost complete . . . . . . . . . . Azurina. 



bb. Teeth more or less compressed. 



i. Lips greatly thickened, fimbriate, and curled back over the snout . . Cheiloprion. 

 u. Lips normal. 



j. Preoperculum serrated. 



k. Spinous portions of dorsal and anal scaly like the soft jDortions; suboperculum 

 and interoperculum entire . . . . . . . . . . Pomacentrus. 



1. Teeth biserial, truncate; soft dorsal short, often elevated; caudal deeply 



forked . . . . . . . . . . . . Subg. Pomacentrus. 



2. Teeth rounded ; preorbital notched ; caudal lunate Subg. Pseud opomacenxrus. 



3. Teeth uniserial ; snout and lower jaw scaly; spinous dorsal with membrane 



incised and lobed . . . . . . . . . . Subg. Parapomacentrus. 



4. Snout and lower jaw naked .. .. •• .. Subg. Amblypomacentrus. 



5. Snout scaly, lower jaw naked; teeth uniserial; membrane ol spinous dorsal not 



notched . . . . . . . . . . . . Subg. Eupomacentkus. 



6. As above, but menibrane of spinous dorsal deeply notched 



Subg. Brachypomacentrus. 

 kk. Spinous portions of dorsal and anal naked; suboperculum and interoperculum 

 serrated . . . . . . . . . . . . . . . . . . Daya. . 



jj. Preoperculum smooth. 



I. 30 or less transverse series of fjcales. 

 m. Suborbitals adnate to the cheeks. 



n. Suborbitals completely covered by scales . . . . . . Nexit.arius 



nn. Suborbital scales not well formed . . . . . . Nexilosus. 



tnm. Suborbitals not adnate to the cheeks. 



o. Teeth emarginate, in a single row . . . . . . . . Glyphisodon, 



1. Preorbital very narrow, snout rather acute ; 12 anal rays 



Subg. Glyphisodon. 



2. Preorbital broad, snout blunt, 10 anal rays . . Subg. Euchistodus. 



3. Lower pharyngeals quadrate . . . . Subg. Hemiglyphidodon. 



4. Scales above lateral line in 1 -2 rows . . Subg. Amblyglyphidodon. 

 00. Teeth not emarginate. 



p. Teeth in two rows . . . . . . . . . . . . Chrysiptera. 



pp. Teeth in one I'ow . . . . . . . . . . . . Hypsypops. 



II. More than 30 transverse series of scales . . . . . . . . . . Parma. 



aa. Teeth uniserial, movable, those of lower jaw confined to front portion. 



q. Vertical fins not elevated, caudal simply lunate . . . . . . . . Azurella. 



gq. Vertical fins much elevated, caudal lobas falcate . . . . . . Microspathodon. 



