FISHEIS OF THE PHOENIX AND SAMOAN ISLANDS 103 



(— ; 11.8; 11.7; 12.0; 12.3; 11.5) ; length of base of anal fin 25.4 (26.2; 

 27.4; 26.4; 26.4; 24.6; 28.2) ; longest gill raker on first gill arch 5.3 

 (4.4; 5.2; 5.3; 4.3; 5.7; 5.2) ; anus to origin of anal fin 5.8 ( — ; 5.5; 

 5.7; 5.1; 4.8; 5.2); distance from tip of snout to the origin of the 

 spinous dorsal fin 36.7 (37.5) 36.2; 36.9; 38.3; 35.9; 36.2); distance 

 from snout to insertion of pectoral fin 27.8 (27.3; 28.8; 29.2; 30.1; 

 30.3; 28,6) ; distance from snout to origin of anal fin 57.9 (58; 58.5; 

 60.0; 58.3 ; 57.3; 57.3) ; longest rays of dorsal fin— fifth spine 15.8 (15.8; 

 17.2; 15.8; 15.7; 16.1; 15.5) ; first soft ray 15.7 (14.8; 13.6; 14.7; 15.9; 

 16.4; 14.9); longest rays of anal fin — third spine 10.4 (10.7; 11.5; 

 12.1; 11.2; 10.8; 9.7) ; first soft ray 12.5 (14.3; 14.8; 14.9; 12.9; 14.2; 

 11.2) ; longest pectoral fin ray 18.5 (20.7; 17.8; 18.9; 19.9; 19.7; 18.5) ; 

 longest pelvic fin ray 14.8 (15.2; 14.8; 14.8; 13.9; 13.9; 13.8) ; longest 

 caudal fin ray 29.3 (32.4; 29.5; 29.5; 30.1 ; 31.1 ; 30.2) ; length of middle 

 caudal fin rays 15.7 (16.7; 13.2; 20.7: 1G.7: 15.0; 15.3). 



Dorsal fin rays IX, I, 12 (IX, 1, 11 ; IX, 1, 12 ; IX, I, 12; IX, 1, 11 ; 

 IX, 1, 11; IX, i, 11) ; anal III, 12 (all HI, 12) ; pectoral 14, 15; 14; 14; 

 14; 14; 14); gill rakers on first gill arch 9 + 1 + 25 (10+1 + 23; 

 10+1 + 25; 8+1 + 23; 10+1 + 24; 8 + 1 + 23; 8 + 1 + 24); scales 

 6 + 53 + 10; (6 + 54 + 10; 7+54+11; 6 + 52+10; 6+53 + 10; 6 + 53 + 10; 

 6 + 53 + 10) ; predorsal scales 12 (12; 14; 12; 13; 12; 12) ; zig-zag row 

 of scales around caudal peduncle 24 (all 24) ; rows of scales from base 

 of last anal ray to midbase of caudal fin 12 (13; 12; 12; 12; 12; 12). 



The top of the head is blackish, not mottled as in K. sandvlcensis; 

 the back and upper sides blackish; tip of lower jaw blackish; the 

 inside of mouth anteriorly, tongue, and lower jaw with black pigment; 

 several black pigment cells on soft rays of anal and soft dorsal ; peri- 

 toneum blackish or heavily pigmented ; inside of opercular apparatus 

 dusky ; caudal fin with outer third of upper and lower lobes blackish, 

 this area narrowing into a wide band at tips of midcaudal fin rays; 

 upper and lower sides of caudal fin with blackish band; the whole 

 central portion of each lobe of the caudal fin with a wide blackish area, 

 and bordering these is a white band posteriorly, and sometimes dor- 

 sally and ventrally ; the young have the tips of each lobe blackish at 

 20 to 25 mm, standard length, and at 50 mm. the blackish central areas 

 are developed but the midaxis of the fin is whitish, in some adults the 

 central black blotches may almost meet at the midaxis of the caudal fin. 



Remarks. — This species differs from all other members of the genus 

 KuhUa in having a black central area in each lobe of the caudal fin 

 and a wide black margin posteriorly on the caudal fin, the regions 

 bordering these areas being whitish. 



Named in honor of Arthur Petit, pliarmacist's mate, U, S, N., who 

 helped me collect fishes on Canton and Enderbury Islands and assisted 

 me in many other ways. 



424599—42 8 



