374 
BULLETIN OF THE UNITED STATES FISH COMMISSION. 
sharply pointed, 1.1; spine 1.6; scales large on side, small on head, caudal peduncle, and chest, and 
becoming very small on vertical fins; scales in oblique series at first above lateral line, in horizontal 
series below, lateral line running to caudal peduncle above at base of last dorsal rays. Described from 
example No. 04544, taken at Honolulu. 
Color in life (field No. 03406) : Ground-color of lower half of body, head, spinous dorsal and pecto- 
ral, citron-yellow; of caudal, anal, and ventrals chrome-yellow; interorbital orange; a chrome-yellow 
ocular bar deepening into orange above, edged on each side by a narrow black line, outside of which 
is a narrow light blue line extending from lower margin of interopercle to origin of dorsal; upper half 
of body, scaly sheath of dorsal, and caudal peduncle sooty gray, excepting 2 elongate white spots on 
lateral line, one below center of spinous dorsal, the other below origin of soft dorsal, the latter spot 
connected with the general yellow below by a short, broad yellow stripe; a narrow light blue band 
edged outwardly with a narrow black line along edge of dorsal and anal sheath; upper edge of soft 
dorsal and lower edge of soft anal black; caudal edged with light blue; base of each scale on anterior 
of side with a round reddish brown spot. 
Color in alcohol, upper surface deep blackish-brown; a brown band from occiput to eye edged 
with darker, which is continued below eye on interopercle as 2 dark brown lines; white band from 
first 2 dorsal spines separating dark band above eye and blackish-brown of back; a large white blotch 
on middle of side above and another below base of soft dorsal on back; a dusky band across caudal 
peduncle; basal portion of dorsal fin blackish-brown; margin of soft dorsal above with a narrow black 
line, another submarginal black line beginning on last half of spinous dorsal and running to posterior 
rays; below this and closer to it than it is to edge of fin, a gray line; caudal with a submarginal gray 
line; anal with a black line along edge of lower rays; edge of soft anal below narrowly blackish; a 
narrow black line from origin of spinous anal running out submarginally to posterior rays; above this 
a narrow gray line; middle of side, just below dark color of back, yellowish; each scale on side below 
with a dusky spot in middle; lower surface of body, head (except dark band), margin of dorsal, anal, 
caudal, pectoral and ventral, whitish. 
We have examined 19 examples obtained by Doctor Jenkins and 10 collected by us, all from 
Honolulu; length 3 to 5.5 inches. The Albatross also obtained examples at Honolulu, where the 
species is moderately common about the coral reefs. 
Chietodon quadrimacutatusa Gray, Zool. Miscell., 33, 1831-42, Sandwich Islands; Gunther Cat., II, 13, 1860 (Gray’s Type); 
Gunther, Fische der Siidsee, II, 38, taf. XXX, fig. A, 1874 (Sandwich Islands; Upolu); Steindachner, Denks. Ak. 
Wiss. Wien, LXX, 1900, 489 (Honolulu; Laysan); Fowler, Proc. Ac. Nat. Sci. Phila. 1900, 512 (Sandwich Islands); 
Jenkins, Bull. U. S. Fish. Comm., XXII, 1902 (Sept. 23, 1903), 474 (Honolulu); Snyder, op. cit. (Jan. 19, 1904), 531 
(Honolulu). 
301. Chastodon corallicola Snyder. Plate 46, fig. 1. 
Head, measured to edge of opercle 3 in length to base of caudal fin; depth 1.7; depth of caudal 
peduncle 3 in head; eye 2.4; snout 2.3; interorbital space 3. D. xm, 21; A. in, 18; scales 4-30-12. 
Anterior profile between snout and dorsal almost straight, with a slight convexity over eye; snout 
short, its length somewhat less than diameter of eye; jaws equal; teeth fine and brush-like; pseudo- 
branchiae very large; gillrakers on first arch 5+14, short and pointed; scales on top of head and 
on snout very minute, those on cheeks, opercles, and breast larger; width of scales near middle of 
body about equal to diameter of pupil, those on caudal peduncle greatly reduced in size; rayed 
portions of dorsal and anal closely scaled, the scaled area extending forward on spinous portion of 
dorsal fin, decreasing in height from near tip of eighth spine to base of first, leaving the membranes of 
the anterior spines largely naked; lateral line curved upward and constantly approaching the back 
until it disappears near end of dorsal fin, not extending on caudal peduncle, with 36 pores, scales very 
small. Except the first the dorsal spines are high anteriorly; height of second to sixth equal to distance 
between tip of snout and center of eye; height of first spine about equal to diameter of pupil; length 
of longest rays about equal to that of longest spines; membrane deeply notched between anterior 
spines, the notches growing shallow posteriorly as the scales approach edge of fin; second anal spine 
• a Chsetodon humeralis Gunther, Cat., II, 19, 1860, and Gunther, Fische der Siidsee, II, 40, 1874 (west coast of Central 
America; Sandwich Islands), is a species common on the west coast of Mexico, which has been, by error, recorded, with 2 
other species of the same region, as from the Sandwich Islands. 
