SYNOPSIS OF THE ARRANGE3IENT OF FISHES. 173 



5. Sub-family Labrin^. Labrus. — Lips very thick and 

 fleshy ; teeth acute ; colours brilliant ; not silvered. 



Labrus. Head covered with scales ; operculum smooth ; 



ventrals small ; front incisors large. 



Labrus. Dorsal fin naked, not falcated ; lateral line abruptly bent. 

 Lachnolaimis. Dorsal fin with the anterior rays falcated. 

 Cheilinus. Dorsal, anal, and caudal fins scaled; lateral line interrupted. 

 Hemiulis. Dorsal fin low, equal, all the rays soft and branched. 

 Cychla. Mouth large, sub- vertical ; lower jaw longest, jaws protractile ; 

 fins naked. 



Crenilabrus, Body shorter, more compressed ; preopercule 



denticulated. 



Cymzdus. Caudal and pectoral fins rounded ; preoperculedenticulated. 

 Crenilabrvs. Caudal fin forked or lunated ; preopercule denticulated. 

 Chrotnis. Pectoral and anal fins very long and pointed ; caudal forked. 

 Cklorurus. Caudal forked ; fins scaly ; preopercule smooth. 

 Astronotus. Lower jaw longest ; mouth obtuse ; fins very scaly. 



PtEsioPS. Ventral fins very long and pointed ; teeth slender, 



equal, setaceous. 



Labristomus. Teeth as in Labrus ; nearly all the dorsal rays soft. 

 Chromis. Pectorals long and pointed ; teeth setaceous ; caudal lunated, 

 Cichlaurus. Mouth oblique ; caudal rounded. 

 Plesiops. Dorsal spines resembling finiets ; ventrals very long. 



* Mouth tubular or very long. 



GoMPHosis. Mouth slender, long, and permanently tubular, 



• * Mouth tubular by protraction ; fins covered by scales. 



Epibulus, Teeth as in Labrus ; scales large ; lateral line interrupted. 

 Clepticus. Body oblong ; head obtuse ; teeth obsolete ; lateral line 

 curved. 



Juris. Head and gill-covers destitute of scales. 



Halicores. A strong canine at the base of the upper jaw pointing 



outwards. 

 Julis. Dorsal fin elevated or falcated in front ; caudal rounded. 

 Icthycallus. Dorsal fin shortest in front ; caudal truncate or round. 

 ChLoricthys. Caudal lunated, the two extremities pointed. 

 Anamp is. Front incisive teeth flat, obtuse, and turned outwards. 

 Eupemis. Body slender ; head long ; lateral line oblique.* 



Family 3. MUGILID^. 



Muzzle obtuse, projecting beyond the mouth. 

 MuGiL. Cylindrical ; dorsal fins two, remote ; pectoral long. ■ 

 PoLYNEMus. Slender detached rays, like filaments, at the 

 pectoral fins. 



Family 4. MULLID^. 



Gill-covers smooth ; two long cirri under the chin. 



Mullus, Profile high^ sub- vertical ; head broad. 

 Vpeneus. Profile attenuated ; head narrower. 



* This singular type seems related to Hemiulis, Clepticus, and Julis ; its 

 situation is very doubtful. 



