114 U.S. NATIONAL MUSEUM BULLETUST 202 Vol. 3 



SPECIMENS STUDIED 



Bikini Atoll: 13 stations, 45 specimens, 43 to 172 mm. in standard length. 



Eniwetok Atoll: 4 stations, 8 specimens, 90 to 157 mm. 



Rongelap Atoll: 1 station, 1 specimen, 121 mm. 



Rongerik Atoll: 2 stations, 6 specimens, 96 to 135 mm. 



Kwajalein Atoll: 1 station, 6 specimens, 54 to 155 mm. 



Likiep Atoll: 1 lot, Univ. Washington, 1 specimen, 144 mm. 



Hota Island: 1 lot, 1 specimen, 152 mm. 



Description. — Dorsal fin rays III-ii,2 1 or 22 ; anal i,20 ; pectoral rays 

 i,12; branched caudal rays 5 + 5; gill rakers on first arch long, slender, 

 pointed 23 or 24 (in 3 counts) ; teeth, upper jaw 8, lower jaw 8; scale 

 rows from upper edge of gUl opening to base of middle caudal rays 

 39 to 43. 



Depth of body 1.9 to 2.3 ; length of head 2.3 to 2.5; both in standard 

 length. Snout 1.2 to 1.5; diameter of eye 4.2 to 6.6; least depth of 

 caudal peduncle 4.0 to 5.1; length of pectoral fin 2.5 to 3.4; length of 

 longest soft dorsal ray 2.5 to 2.9; length of longest anal ray 2.8 to 3.2; 

 length of middle caudal rays 1.9 to 2.5; interorbital width 4.1 to 4.7; 

 all in length of head. Angle of snout profile 29 to 35 degrees, snout 

 profile usually straight, sometimes slightly concave or convex. 



Teeth large, white, deeply notched ; no deep groove before eye below 

 nostril; interorbital slightly convex; third dorsal spine small, not 

 projecting above rim of groove; caudal peduncle armed with 3 or 4 

 rows (usually 4) of antrorse spines, 4 or 5 teeth in dorsal row, 8 to 10 

 in two middle rows, ventral row to 8 teeth; caudal peduncle 

 constricted; hind margin of caudal fin rounded in young, truncate in 

 adults. 



Color in alcohol. — Ground color of head and body pale yellowish 

 white; lips pale, white or yellow, faint bluish grey line just behind 

 lips around dorsal portion of mouth, not extending onto chin; inter- 

 orbital area usually dark grey (sometimes black) with 3 darker trans- 

 verse lines; dark band, slightly narrower than eye, extending from 

 lower edge of orbit, broadening ventrally to include base of pectoral 

 and extending posteroventrally to anterior two-thirds of anal base; 

 upper margin of this black diagonal body band pale; a light grey 

 (sometimes brown) line running from middle third of body band to 

 posterior dorsal base; area around anus black; broad black band 

 around caudal peduncle, lateral portion of this band extending for- 

 ward, including caudal peduncle spines and forming a triangular 

 shaped patch, the anterior margin of which usually has a broad light 

 silvery line; dorsal fin spines pale, membranes brown or black; soft 

 dorsal pale, translucent; caudal fin light dusky; pectoral fin base 

 black, rest of fin pale. 



Color in life. — Pattern as described for preserved specimen; ground 

 color of back light greyish brown; blue line around dorsal portion of 



