FISHES OF THE PHOENIX AND SAMOAN ISLANDS 85 



1&. Dorsal and aual fin not followed by fiulots, although in Scomhcroidcs several 

 fin rays may appear almost detached posteriorly. 

 3a. Shoulder girdle with a deep furrow uour its juncture with the isthmus, 

 and a fleshy projection above it. 



Trachurops crumenophthalmus (Blooh) 

 36. Shoulder girdle normal, without groove or projection. 



4a. Lateral line entirely unaimed, with a gentle curve over pectoral fin then 

 gradually approaching midaxls of body posteriorly. 

 5a. Depth of body 1^ to 21/2 in length ; lower jaw included ; anterior lobe 

 of dorsal and anal fins elongate or falcate. 

 Ga. Dorsal rays VII, 23 or 24; anal rays III, 22 or 23; gill rakers on 

 first gill ai-ch 9 or 10+1+15, totaling about 25 or 26. 



Trachinotus baillonii (Lacep&de) 

 66. Dorsal rays VII, 18 or 19 ; anal rays III, 17 ; gill rakers on first gill 



arch 5 or G+1+12 or 13 Trachinotus ovatus (Linnaeus) 



56. Depth of body about 3^4 times in standard length; lower jaw a trifle 

 longer than upper ; lobes of dorsal and anal fins not elongate or 

 falcate ; pectoral fin about length of mouth ; maxillary reaches to 

 under rear margin of eye; dorsal rays VI-19 (last seven rays appear 

 almost separated from one another) ; aual rays II-I, 24 (last seven 

 rays appear almost separated from one another) ; pectoral rays 

 about 16; gill rakers 7+1+19 on first gill arch. 



Scomberoides sancti-petri (Cuvier) 



46. Lateral line armed with keeled scales posteriorly, most highly developed 



on caudal peduncle. 



7a. Dorsal fin rays VIII-I, 30 to 32 ; anal rays II- 1, 25 or 26 ; about 60 



scales along straight portion of lateral line ; gill rakers on first gill 



arch 9+1+17 to 22 totaling 27 to 32 Caranx ferdu (Forskal) 



76. Dorsal soft rays fewer than 26, soft anal rays fewer than 23. 



8a. Lateral line gently arched over pectoral fin, length of this arch from 



upper angle of gill opening to where lateral line straightens out 



along midaxis longer than or as long as straight part of lateral 



line. 



9a. Dorsal and anal fins with anterior rays greatly elongate; last 



5 to 8 rays normal ; dorsal rays VIII-I, 21 ; anal II-I, 16 or 



17 ; scales along straight portion of lateral line about 42 ; gill 



rakers 7 or 8+1 + 16 or 17 ; breast and thorax naked. 



Caranx armatus (Forsk&l) 



96. Dorsal and aual fins without (Hongate rays; dorsal fin rays 



VIII-I, 23; anal II-I, 20; scales along straight portion of 



lateral line about 43: gill rakers on first gill arch 13+1+27; 



breast and thorax scaled Caranx lundini (Jordan and Seale) 



86. Lateral line with an abrupt arch over pectoral fin, length of this 

 arch from upper angle of gill opening to where lateral line 

 straightens out along midaxis shorter than straight portion, which 

 has keeled scales at least posteriorly. 

 10a. Forty to fifty scales along straight portiim of lateral line. 



11 fl. Body without cross hands except in young up to 3 or 4 inches 

 long; dorsal ray? VIII-I, 22 or 23; anal II-I, IS to 20 

 (usually 19) ; gill rpkers on first gill arch 7 or 8+1+17 or 

 18; scales along straight portion of lateral line 40 to 45; 



breast scaled Caranx melampygus Cuvier 



116. Body of adult with about 12 vertical brownish bands, first 

 through eye, second across rear of oi)erc]e past base of 



