90 U.S. NATIONAL MUSEUM BULLETIN 202 Vol. 2 



narrow blue lines on preorbital to lips, these lines sometimes evident 

 on eye also; narrow blue line extending forward on dorsal surface of 

 snout almost to tip, where it meets its fellow; suborbital and dorsal 

 row of preopercular scales with faint blue lines; head dark brown or 

 blacldsh except for opercle, which has a broad white vertical band; 

 opercular membrane with black spot between spines; body dark brown 

 on back and upper sides, contrasting with pale yellowish wliite on 

 lower sides, breast, and belly; a dark ocellus, as large as eye, on back 

 just below base of 11th to 13th soft dorsal rays; dorsal surface of 

 caudal peduncle dark blue, silvery, or blackish expanding into a large, 

 intense black spot on the dorsal base of the caudal fin ; scales of upper 

 part of sides with 1 or 2 small oblong or round blue spots (these often 

 indistinct in preserved specimens); spiny dorsal membrane dusky 

 basally, distal half pale, a narrow black line on its margin, free flaps 

 black or bicolored ; soft dorsal dusky basally on anterior portion only, 

 rest of fin pale; caudal base dusky, outer edges of outer rays with thin 

 brown or blacldsh line; anal entirely pale or with anterior margin 

 dusky, anus black; pel vies pale except outer edge of spine and first 

 ray dusky brown; pectoral pale with small dark brown or black 

 axillary spot and usually a narrow dark fine on dorsal half of its base. 

 Remarks. — This species is evidently very closely related to Abudefduf 

 amahilis De Vis but may be readily separated from it by the color 

 pattern. No intergrading individuals were noted among the several 

 hundred examined. 



ABUDEFDUF AMABILIS (De Vis) 



Plate 89. D 



Gh/phidodon amahilis De Vis, Proc. Linnean Soc. New South Wales, vol. 8, 

 p. 452, 1884 (type locality, South Sea Islands). 



SPECIMENS STUDIED 



Bikini Atoll: 14 stations, 79 specimens, 13 to 55 mm. in standard length. 



Eniwetok Atoll: 5 stations, 46 specimens, 32 to 61 mm. 



Rongelap Atoll: 3 stations, 14 specimens, 19 to 49 mm. 



Kwajalein Atoll: 11 specimens, 23 to 50 mm. 



Guam, 8 lots, 92 specimens, 14 to 54 mm. 



Rota Island, 10 specimens, 31 to 50 mm. 



Description. — Dorsal rays XIII, 11 or 12 (usually 12); anal rays 

 11,12; pectorals ii,16 or 17; transverse scale rows from upper edge of 

 gill opening to base of caudal rays 26 or 27, with 2)^ scales between 

 lateral line and origin of dorsal, 9 between lateral line and origin of 

 anal; upper part of lateral line with 17 to 19 tubular scales; gill rakers 

 6 or 7 + 1 + 12 or 13 totaling 19 to 21 (4 counts). 



