FISHES OF THE PHOEISTIX AND SAMOAN ISLANDS 141 



faint vertical color bars, the first extending from lateral line 

 just behind pectoral to pelvics, and the second from eleventh to 

 thirteenth dorsal spines to origin of anal ; area between these 

 faint bars lighter thus causing them to stand out clearer; 

 pectoral fin pale; margin of anal and soft dorsal fins white, 

 then a narrow submarginal black line about width of white 

 margin ; caudal fin pale ; spiny dorsal pale. 



Chaetodcn kleinii Bloch 

 86. Pelvic fins pale. 



10a. Black band tJiat passes from supraorbital region through eye 

 continues veutrally on isthmus or breast, forming a bluish, 

 blackish, or brownish patch there and often meeting its fellow 

 from the other side, 

 llo. Upper center of body with a large black spot ; caudal fin pale 

 without distinct black transverse bands or lines. 

 12a.. In upper center of body a large black spot, through middle 

 of which passes lateral line; rest of body pale except 

 a black ring around caudal peduncle and wide black 

 baud beginning on supraorbital region of head and pass- 

 ing through eye, its width about equal to eye at eye, 

 thence to breast ; top of head dusky ; anterior part of body 

 with about six transverse black lines, most intense over 

 pectorals; pectorals pale; margin of anal white and pos- 

 teriorly a wide submarginal black band narrowing ante- 

 riorly and fading out before reaching spinous portion ; 

 anterior seven-eighths of anal fin pale dusky ; soft dorsal 

 similar to anal; spiny dorsal pale; dorsal rays XIII, 22 

 or 23 ; anal III, 18 to 20 ; scales about 40 to 44. 



Chaetodcn unimaculatus Bloch 

 12b. A roundish or oval whitish-bordered black spot, its diam- 

 eter about 1% length of snout, near middle of body, 

 crossed by lateral line at its upper margin ; two diverg- 

 ing (bluish in life) brownish curved bands descending 

 from near top of gill opening, one passing across base 

 of pectoral to origin of anal and the other behind pec- 

 toral to front third of anal fin; a similar but wider ver- 

 tical diffuse band across caudal peduncle; a white-bordered 

 brown (blue in life) band runs from nape through eye 

 to isthmus (this band narrower than eye), where more 

 distinct edges of this baud can be seen on the isthmus 

 and breast; all fins pale; dorsal rays XIII or XIV, 17 

 or 18 ; anal III, 14 to 16 ; scales 45 or 46. 



Chaetodcn bennetti Cuvier 

 11&. Upper center of body without an isolated round black spot; 

 caudal fin with one or two blackish transverse bands. 

 13a. Al)out five narrow blackish lines extending obliquely up- 

 ward and backward from head, and increased two or 

 three in number on soft dorsal, and at right angles from 

 the fifth line above about 11 blackish lines extend postero- 

 ventrally across body ; black band through eye meets 

 its fellow below, but nape is pale and band is wedge- 

 shaped above eye, in young this band meeting dorsally 

 in front of origin of dorsal fin ; pectorals pale ; anal with 

 a narrow submarginal black lino ; ba.-al half of anal black- 



