REPOET OK FISHES COLLECTED IK THE HAWAIIAK IRLAKDS. 
455 
of belly, then forming a gentle concave curve symmetrical with corresponding part of dorsal profile; 
month only very slightly oblique; posterior limb of preopercle almost vertical, lower limb horizontal, 
angle rounded; eye almost circular, anterior rim slightly before middle of head; center of pupil on 
level with opercular spine; interorbital convex; scales on snout extending a little below nostrils, 
several large ovate ones about nostrils; preorbital, lower part of snout, jaws, and maxillaries naked; 
first dorsal spine very short; third and fourth longest; third flexible at tip, not pungent, 1.8 in head; 
spines back of fourth regularly decreasing in length to last which is 0.3 of second; distance between last 
dorsal spine and first ray of second dorsal 2.5 in head; spine of second dorsal equal to sixth spine, 
2.8 in head; first branched ray longest, a little less than half of head, rays gradually decreasing in 
length to last, which is 3.5 in head; caudal deeply forked, lobes about equal, upper of 10 rays, lower of 
9; first anal spine very short, concealed within membranes about base of second, second equal to first 
branched ray of dorsal; others gradually decreasing in length to last, which equals last dorsal ray; 
pectoral pointed, upper rays longest; ventral pointed, second branched ray longest; lateral line parallel 
with dorsal profile, beginning above upper end of gill-slit; scales large, ctenoid, those of ventral parts 
rather larger than those of back; basal half of caudal scaled; other fins naked; dorsal depressible in a 
groove; tubes of lateral line with numerous (13 in largest examples) radiating branches on each scale; 
scale before upper end of base of pectoral with large lobe overhanging base of pectoral; scale above 
base of ventral with prominent tapering backward prolongation; barbels slender, short, not reaching 
posterior edge of preopercle, 1.75 in head. 
Color in life ( field Ko. 212 ) , head and body uniformly reel, fins brighter ; first dorsal tipped with white; 
belly lighter; iris light yellow; soft dorsal and anal with inconspicuous golden tinge on membranes. 
Color in alcohol, somewhat variable, most of the specimens with pale-yellowish ground-color; all 
have a well-marked bright yellow or white quadrate area saddled across anterior half of dorsal surface 
of caudal peduncle, reaching about half way down to lateral line on side. On specimens with most 
color present, dorsal fins and dorsal half of head and body much clouded with dusky; a band on head 
from below anterior nostril to middle of front rim of eye and appearing again back of eye on side of 
head; a dusky blotch on opercle before angle; on free part of side of body indistinct definite yellowish 
lines below lateral line and 2 above it following middle row of scales. 
Resembles P. xcinthospilurus (Bleeker) in possession of yellow blotch on front half of back of 
caudal peduncle, differing from P. chryserydros in confinement of blotch to fore half of peduncle and in 
much shorter barbels. Differs from P. xcinthospilurus in much shorter barbels and in shorter snout. 
