180 BULLETIN ISO, UNITED STATES NATIONAL MUSEUM 



226. Upper and lower lobes of caudal fin not differently 

 pigmented than rest of fin ; 3^^ or 4 scales above end 

 of lateral line. 

 23o. Five black bars on side of body ; suborbitals scaled 

 (on young of these species scales are not devel- 

 oped) ; preopercular edge scaled; preorbitals 

 naked ; top of head scaled to between nostrils. 



Abudefduf saxatilis (Linnaeus) 



23&. Six black bars on side of body; suborbitals scaled 



posteriorly ; preorbitals and preopercular edge 



naked; top of head scaled only forward to least 



interorbital distance. 



Abudefduf septemfasciatus (Cuvier) 

 2.1b. Body not consisting of black bars with pale interspaces 

 of about same width ; if bars occur they are white on 

 a generally black background. 

 24o. Preorbitals (area in front of. eye from rear edge of 

 maxillary forward ) scaled ; suborbitals and pre- 

 opercular edge scaled ; top of head scaled forward 

 in front of nostrils; teeth uniserial, rather large 

 and few in number ; no black spot at rear of 

 soft dorsal, but a black spot at upper base of 

 pectoral ; two scales above end of lateral line ; 

 color light brown, paler below ; outer rays of anal 

 dusky; dorsal rays XIII, 12; anal II, 13. 



Abudefduf curacao (Blocb) 

 24&. Preorbitals, suborbitals, and preopercular edge naked ; 

 teeth in one row, with smaller teeth inside and be- 

 tween larger ones. 

 25c. Opercle with a pale spot ; ground color usually 

 blackish or brownish with one or two pale bars 

 on body, seldom obscure; 1 to l^/^ scales above 

 end of lateral line. 

 26a. Color plain brown or blackish with a wide pale 

 bar on side of body under last half of pectoral 

 fin ; no black spot at upper base of pectoral, as 

 pectoral base is same color as body ; a black 

 spot at rear base of soft dorsal extending a 

 little on caudal peduncle but becoming obscure 

 after a standard length of 45 mm. is reached; 

 a black spot at rear base of spiny dorsal, also 

 disappearing at the same size ; basal two-thirds 

 of caudal fin brown, rest pale; top of head not 

 quite scaled to opposite nostrils ; dor.sal rays 

 XIII, 12 or 13; anal II, 13; gill rakers 8 or 



9+14 or 15 Abudefduf zonatus (Cuvier) 



26&. Body blackish with two narrow pale bars, one at 

 tips of pectoral fin and the other across front 

 of caudal peduncle, these bars, at least the one 

 under tips of pectoral, sometimes faint or ob- 

 scure ; pale opercular spot prominent, with a 

 blackish margin on opercle ; base of pectoral 

 dusky like body ; no spot at rear base of soft 

 dorsal; caudal fin with pale band across middle 



