FISHERY BULLETIN: VOL. 78, NO. 2 



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Figure SS.—Camnx lugubris, 557 mm FL, 3.1 kg, St. John, U.S. Virgin Islands. 



dark color (especially on the scutes) and distinc- 

 tive configuration generally permit identification, 

 the fully scaled breast will provide separation 

 from C. ignobilis, the low number of scutes on 

 straight portion of lateral line (26-33) from C. 

 melampygus, and the high gill raker count (18-20 

 on lower limb) from C. sexfasciatus. This species is 

 found mainly around oceanic islands and is nearly 

 always encountered in the clear water of outer reef 

 environments. 



Fifteen specimens were obtained at Enewetak 

 for testing. These ranged from 488 to 910 mm FL 

 and weighed from 2.5 to 15.5 kg. Eleven were 

 nonpoisonous, two gave reactions of 1, one was a 2, 

 and one a 3. No specimens were collected at Bikini. 



Randall (1955a) reported a fish in one of two 

 specimens collected in the Gilbert Islands and 

 Randall ( 1967) found fishes in two of six specimens 

 from the Caribbean Sea. 



For the present food-habit study, 10 specimens 

 were obtained from Enewetak and Henderson Is- 

 land in the Pitcairn Group. Four had empty 

 stomachs, and the remaining six contained the 

 remains of fishes, one of which was a labrid. 



Caranx melampygus Cuvier and Valenciennes 

 (Figure 39): This is the most abundant jack of the 

 genus in Oceania; it is widespread in the tropical 



234 



and subtropical Indo-West Pacific and ranges to 

 the eastern Pacific as well. It is irridescent blue 

 along the back and median fins in life with a scat- 

 tering of small blackish spots on the head and body 

 except ventrally. The chest is completely scaled, 

 and there are 38-44 scutes in the straight portion 

 of the lateral line. 



Thirty specimens were collected at Enewetak, 

 417-722 mm FL, 1.4-6.8 kg, for the assay of cigua- 

 tera. Twenty-four were nontoxic, four gave a reac- 

 tion of 1, one was a 2, and one a 3. 



Six specimens from Bikini, 394-686 mm FL, 

 1.8-6.6 kg, were nontoxic. 



Randall ( 1955a) examined the stomach contents 

 of four specimens from the Gilbert Islands. Two 

 contained many small freshly ingested fishes 

 which were probably the result of a rotenone sta- 

 tion kill. Of the other two which were speared, one 

 contained the anthiine fish Mirolabrichthys tuka 

 (= Anthias pascalus) . Hiatt and Strasburg (1960) 

 found fish in the stomachs of two from the Mar- 

 shall Islands, one of which was identified as 

 Trachurops {— Selar) crumenophthalmus . Hobson 

 (1974) examined the stomach contents of six 

 specimens from Hawaii. One contained larval 

 fishes and mysids, a second had fish and shrimp 

 remains, and three contained well-digested frag- 

 ments at least one of which was fish. 



