398 
BULLETIN OF THE UNITED STATES FISH COMMISSION. 
bristles below posterior dorsal rays. Description based on an.example (No. 05034) 7.3 inches,long 
from Honolulu. 
Color in life (No. 03504), body and tins everywhere uniformly chrome-yellow; iris same color; 
pectoral sometimes with a tinge of golden over the yellow and the middle of side of bodv some¬ 
times lighter yellow; spine.on caudal peduncle white. Another example (No. 03537) had edge 
of spinous dorsal and anterior part of anal tin with a line of bright cadmium. Color in alcohol very 
pale yellowish white. This species is often dark olive in color, but. from Hawaii we have yellow 
examples only. 
We have 3 examples from Kailua and 8 from Honolulu, 1 of which is from the collection of Doctor 
Jenkins. These examples are 3.2 to 7.3 inches long. 
The young ( Zebrasoma rirgatum ), is thus described: 
Depth 2.33; D. iv, 31, its height 1.25 in depth; A. hi, 24; 14 teeth in upper jaw, lti in low'er; 
edges of upper teeth conspicuously lobed; lower teeth each with a strong median point, on each side 
of winch are 2 conspicuous notches; eye situated well back. 
Coloration of body brownish yellow crossed by about 25 straight bands of deeper color reaching 
the ventral region; head speckled with little blue spots, the end of snout being of a deeper color than 
rest of head; a more deeply colored band extending from nape across eye; 4 moderate bands extend¬ 
ing to lower part of body and touching posterior edge of eye, continuing to base of centrals, the second 
band reaching to base of anal; dorsal and anal deeply colored with clearer portions and yellowish 
bands obliquely parallel posteriorly; caudal brownish yellow, with the posterior part more deeply 
colored. Hawaii. 
Aeantliurus Jlavescevx Bennett. Zool. .Tourn.. IV, No. XIII, Art. Ill, 1828, 40, Oahu; Gunther Fische der Svidsee, IV 116, t»f. 
i.xxvi, 187.8 (Society and Sandwich islands; New Hebrides); Steindachner, Denks. Ak. Wiss. Wien, I,XX, 1900, 493 
1 Honolulu). 
Acanthurux rh&mbcus. Gunther, Cat., Ill, 342, 1861 (Sandwich Islands). 
/atmisoma agaiia Seale. Oe. Papers Bishop Mus. I, No. 3. 1900 (1901) 110. Guam. 
Sropas flavcsceiti s, Jenkins. Bull. T.\ S. Fish Comm., XXII, 1902 (Sept. 23,1903), 480 (Honolulu}; Snyder, op. eit. (Jan. 19,1904), 
533 (Honolulu. Puako Bay, Hawaii). 
Acanthurusrirgatus Vaillant A Sauvage, Rev. Mag. Zook, III, 1875, 283, Sandwich Islands. 
Genus 181. CTEN0CH7ETUS Gill. 
Teeth movable, strongly serrate; otherwise essentially as in Hepalus. Herbivorous species of dull 
coloration; 8 dorsal spines. ' 
Ctenodon S wain son, Class. Fish.. II. 255, 1839 (slrigosun) ; preoccupied. 
Ctenochsctus Gill, Proc. U. S. Nat. Mus., VII, 18S4, 277, 279 (strigosus). 
325. Ctenochaetus striatus (Quoy & < milliard). “Kali.'’ Fig. 171. 
Head 3.5 in length; depth 1.8; snout 1.8 in head; eye 4; interorbital 2.75; D. vm, 27; A. in, 25. 
Body deep, short, compressed; upper and lower profiles evenly convex; head deep, compressed, 
upper profile evenly convex from tip of snout to occiput; snout long, jaws low, vary slightly produced; 
lips thin, teeth slender, dilated, compressed at end, the outer side crenulate; margin of preopercle very 
oblique, angle below anterior margin of eye; interorbital space broad, elevated, convex; nostrils small, 
close together, anterior circular, with small, thin, fleshy flap, posterior short, slit-like; dorsal spines 
graduated to last, which is 1.65 in head; soft dorsal with rays of last third produced in a sharp point, 
sixteenth ray 1.25; anal spines graduated to last, which is 2; posterior anal rays produced in a point, 
thirteenth 1.2; caudal rather large, broad, deeply emarginate, upper and lower rays produced in points; 
pectoral broad, 3.25 in body; ventrals long, sharply pointed, 3.2 in body; ventral spine sharply pointed, 
2 in head; caudal peduncle compressed, its depth 2.35; caudal spine long, depressible in a groove, 3; 
scales very small, ctenoid; lateral line nearly concurrent with dorsal profile, running down behind to 
caudal spine; very minute scales on basal portions of vertical fins. 
Color in life (No. 03300), side coppery red with about 30 narrow pale blue, somewhat wavy, 
irregular longitudinal lines; head dark brown; dorsal much like side; anal solid bluish-black; Cauda 1 
