80 U.S. NATIONAL MUSEUIVI BULLETIN 202 Vol. 2 



66. Top of head scaled forward to least interorbital width; 6 trans- 

 verse black bands on body; young with black saddle on dorsal 

 surface of caudal peduncle and black spot on anterior dorsal 

 spines, disappearing with age; snout 3.1 to 3.6 in head; dorsal 

 rays XIII,12 or 13; anal 11,12 or 13; pectorals ii,15 to 17; 

 lateral line with 20 to 22 tubular scales; gill rakers 8 to 10 + 

 1 + 14 = 23 to 25. 



A. septsmfasciatus (Cuvier and Valenciennes) 

 56. Preorbitals and suborbitals scaled; snout scaled in front of nostrils. 

 la. Caudal lobes with lengthwise brown band, middle rays pale; body 

 with 4 or 5 broad transverse brown bands from base of dorsal 

 narrowing ventral! y; transverse scale rows (upper edge of 

 gill opening to base of middle caudal rays) 29; upper part of 

 lateral Hne with 21 tubular scales; dorsal rays XIII, 12 or 13; 

 anal rays 11,12; pectorals ii,16; gill rakers 7 + 1 + 18 = 26. 



A. sexfasciatus (Lacepfede) 

 76. Caudal lobes without lengthwise band, only outer edge of outer 

 rays dusky brown; back sooty brown to lateral line, 3 vertical 

 brown or black bars extending ventrally from brown back, 

 another above pectoral base and one on caudal peduncle; 

 transverse scale rows (from upper edge of gill opening to 

 base of middle caudal rays) 24 to 26; upper part of lateral 

 line with 16 tubular scales, followed by 2 or 3 with pores; 

 dorsal rays XIII,12 (rarely 13); anal 11,13 (rarely 12); 

 pectorals ii,14 or 15; gill rakers 7+1 + 19 to 21 = 27 to 29. 



A. curacao (Bloch) 

 26. Teeth of jaws in two rows, long, slender, curved, and cylindrical; tips 

 compressed to rounded; teeth of inner row smaller fitting between 

 teeth of outer row; body elongate, robust; never with dark transverse 

 bars; snout, preorbital and suborbital naked. Subgenus Chrtsiptera 

 Swainson. 

 8a. Opercle with a pale spot. 



9a. A black spot at dorsal edge of base of caudal fin promiiient at all ages; 

 a narrow blue stripe from snout passes along dorsal edge of eye, 

 widening behind eye and continuing to base of soft dorsal, where 

 it surrounds a large oblong black spot; upper sides brownish, 

 lower sides pale yellowish, belly white; pel vies, anal, and caudal 

 fin pale hyaline; no dusky color on distal portion of caudal fin; 

 dorsal rays, XIII, 12 (rarely 13); anal 11,12 (sometimes 13); 

 pectoral rays ii,17 (rarely 16); gill rakers 8+1 + 12 to 14 = 20 to 23. 



A. leucoporaus (Lesson) 

 96. Entire basal third of caudal black; no broad blue stripe from eye to 

 dorsal; body brown, usually with a narrow white transverse bar 

 from 5th to 7th dorsal spines to anus and a second white ring 

 around anterior part of caudal peduncle, area behind pectoral 

 pale; these two bars may be absent but pale pectoral area always 

 evident; pelvics and anal dark brown or black; tips of middle 

 caudal rays dusky; dorsal rays XIII, 11 or 12 (usually 12); anal 

 11,12; pectorals ii,16 or 17; gill rakers 6 or 7+ 1 + 12 to 13 = 19 to 21. 



A. amabilis (De Vis) 



