84 BULLETIN 180. UNITED STATES NATIONAL MUSEUM 



Genus POLYDACTYLUS Lacepede 



Polydactylus Lacepede, Histoire naturelle des poissons, vol. 5, p. 419, 1803. [Type, 

 Polydactylus plumierii Lacepede (—Polyncmus virginicus Liuuaeus).] 



POLYDACTYLUS SEXFILIS (Valenciennes) 



Polpnemus sexfllis Valenciennes, in Cuvier and Valenciennes, Histoire naturelle 

 des poissons, vol. 7, p. 515, 1831. 



115195, Tau Island, reef at Siulagi Point, June 27, 1939, 4 specimens. 

 115194, Swains Island, reef, May 3 to 9, 1939, 2 specimens. 



POLYDACTYLUS PLEBEIUS (Bonnaterre) 



Polinemus plebeius Bonnateeee, Tableau eneyclopedique . . . Icbthyolcgie, p. 183, 

 pi. 74, fig. 309, 1788. 



115739, Tutuila Island, reef at Pagai, June 4, 1939, L. P. Schultz and Frank 

 Taiga, 1 si)ecimen. 



52476, Apia, Samoa, Jordan and Kellogg, 2 specimens. 



Family ACANTHOCYBIIDAE 



Genus ACANTHOCYBIUM Gill 



Acanthocybium Gill, Proc. Acad. Nat. Sci. Philadelphia, 1862, p. 125. (Type, 

 Cybium sara Bennett.) 



ACANTHOCYBIUM SOLANDRI (Cnvier) 



Cybium solandri Cxtviie, in Cuvier and Valenciennes, Histoire naturelle des 

 poissons, vol. 8, p. 192, 1831. 



115306, near Manua Islands, latitude 14°32' S., longitude 170°4' W., June 24, 

 1939, 1 specimen, caught by C. E. Stowe, U. S. N., sliip's cook, U. S. S. Bushnell. 



Family CORYPHAENIDAE 



Genus CORYPHAENA Linnaeus 



Coryphaena Linnaeus, Systema naturae, ed. 10, vol. 1, p. 261, 1758. (Type, 

 Coryphaena hippurus Linnaeus.) 



CORYPHAENA HIPPURUS Linnaeus 



Coryphaena hippurus Linnaeus, Systema naturae, ed. 10, p. 261, 1758. 



115308, near Manua Islands, latitude 14°32' S., longitude 170°4' W., June 24, 

 1939, 1 specimen caught by C. E. Stowe, U. S. N., ship's cook, U. S. S. Bushnell. 



Family CARANGIDAE 



KEY TO THE GENERA AND SPECIES OF CARANGIDAE FROM THE PHOENIX AND 

 SAMOAN ISLANDS BASED ON SPECIMENS IN THE NATIONAL MUSEUM (see 

 table 8) 



la. Dorsal and anal fins followed by a single finlet ; depth about 4l^ to 5 in 

 length, head about 414 to 5^^ in length. 

 2a. Dorsal rays VI-I, 25 or 26-2 ; anal rays II-I, 10 to 18-2. 



Elagatis bipinnulatus (Quoy and Gaimard) 

 2b. Dorsal rays VIII-I, 30 to 32-1; anal ray.s II-I, 26 to 28-1. 



Decapterus sanctae-helenae ° (Quoy and Gaimard) 



■ No specimen in National Museum from Plioenix and Samoan I.slands but included liere 

 for salve of completeness of key. 



