FISHES OF THE PHOENIX AND SAMOAN ISLANDS 147 



shaped and narrower than pupil ; pectoral pale ; anal pale 

 except for a narrow diffuse darkish marginal line and a 

 submarginal one more diffuse across central portion ; 

 caudal pale except for a line of blackish pigment along 

 side of each ray, and upper and lower margins whitish ; 

 soft dorsal with a diffuse marginal black line behind or 

 below long filamentous ray and a jot-black submarginal 

 one separated from outer one by a white band, and from 

 black patch of body by a yellow or light band ; this sub- 

 marginal black line continues a short distance out the 

 long ray, forming a black line on its ventral margin ; 

 large black patch of body continues out center of fila- 

 mentous ray, upper margin of this ray white ; dorsal 

 rays XIII, 24 to 26; anal III, 21 to 22; scale rows about 



34 to 37 Chaetodon ephippium Cuvier 



24&. No large black patch occupying entire posterior dorsal area 

 of body. 

 25a. Caudal without a jet-black transverse band across middle 

 of fin. 

 26fl. Color pattern of about 18 rows of small blackish spots 

 arranged longitudinally and radiating posteriorly 

 from head ; caudal peduncle pale ; black band begins 

 at origin of dorsal, passes through eye, its width nar- 

 rower than eye but not extending on isthmus or 

 breast; pectoral pale; anal fin with a wide black 

 marginal band, then a yellow band, rest of fin, about 

 three-fourths of it, pale; caudal pale; black band 

 through eye continues as a marginal narrow line 

 on spinous dorsal and as a submarginal line on soft 

 dorsal, very edge of fin whitish ; dorsal rays XIV, 

 20 to 22; anal III, 15 to 17; pectoral 15; scale rows 



about 38 to 42 Chaetodon citrinellus Cuvier 



266. Color pattern of four to eight or more transverse nar- 

 row blackish bands across body with an anteriorly 

 directed angle near axis of body, fifth and sixth to 

 tenth bands progressively smaller, ending at a narrow 

 blackish or brownish line that extends from middle 

 of twelfth dorsal spine downward across middle of 

 anal base, curving posteriorly to end in a darker 

 patch just behind tip of last anal spine; transverse 

 bands do not meet ventrally but end a short distance 

 above ventral side of body ; posterior part of body 

 I)ale; caudal peduncle pale; a white-bordered black 

 band passes from nape through eye, its width at eye 

 being that of pupil, but wider above it ending in 

 diffuse pigment on lower part of opercular apparatus; 

 snout a little brownish; lips white; pectoral pale; a 

 diffuse pale-darkish area in anterior half of anal 

 fin, its margin white, then occurs a submarginal black 

 line; a faint transverse submarginal line on caudal 

 fin, its base a trifle i)igmented ; membranes between 

 dorsal spines brownish, intens'ely colored anteriorly; 

 dorsal rays XIII, 22 anal III, 16 to 17, scales about 

 29 to 30 Chaetodon mertensii Cuvier 



