JORDAN AND JORDAN: FISHES OF HAWAII. 43 



Apogonichthys Bleeker. 

 Prcopercle entire; lateral line complete; teeth on palatines; gill-rakers 

 numerous; caudal lunate. 



269. Apogonichthys waikiki (Jordan and Evermann). (J. & E., p. 210.) 

 A rare little fish, found on the reefs. 



Synagrops Glinther. 

 {Melanosfoma Steindachner and Doderlein. Preoccupied.) 



270. Synagrops argyrea (Gilbert and Cramer). (J. & E., p. 218; G., p. 618.) 

 Deep sea. Rare. 



Note. 

 The genera or subgenera allied to Apogon, some of them of ciuestionable 

 value, are provisionally diagnosed in the following key: 



u. Jaws without distinct canine teeth. 



b. Anal fin long, its rays about II, 16; preopercle entire; dorsal spines six; scales large, about 



twenty-five; caudal fin forked {bleekcri) Arch.\mia Gill. 



bb. Anal fin short, its rays usually II, 8. 



c. Preopercle distinctly serrate on one or both limbs. 

 d. Caudal fin lunate or forked. 



c. Preopercle distinctly serrate on both limbs; dorsal spines seven {frenatm). 



Pkistiapogon. 

 ee. Preopercle serrate on posterior limb only. 

 /. Vomer and palatines with teeth. 



(/. Scales large, about twenty-five. 



/(. Dorsal spines six (f«6pj-) ; (.4//(/fi Oronow; Moiioi)rion Poey). 



Apogon. 

 /)/(. Dorsal spines seven or eight {fleuricui) . . .Ostorhynchus Lacepede. 

 gg. Scales small, thirty-five to fifty; dorsal spines six (kaloaoma). 



Lepidami.\ Gill. 



/f. Vomer and palatines tootliless iparvula) Brephamia^ Jordan. 



dd. Caudal fin convex, its peduncle rather long; scales large; dorsal spines six {fusca). 



Nectamia Jordan. 

 cc. Preopercle rigidly entire on both limbs. 

 i. Caudal fin rounded. 



j. Dorsal fins not connected at base. 

 k. Palatines with teeth. 



/. Lateral line complete. 



711. Gill-rakers few and small, aliout six; profile before dorsal S-shaped, 

 concave above eye; dorsal si)ines six. 

 n. Scales small, about forty; tongue with small teeth (a prion). 



Glossamia Gill. 



5 Brephamia gen. not'., Jordan. Type Aniia parvula Radcliffe. Differing from .\pogon in having 

 no teeth on vomer or palatines. 



