FISHES OF HAWAIIAN ISLANDS. 
385 
This species is abundant at Honolulu, where it was obtained by Jenkins, the Albatross , and by us. 
Steindachner and also Fowler had specimens from Honolulu, and the Albatross obtained it at Puako 
Bay, Hawaii. We have examined 28 specimens, all from Honolulu, ranging in length from 4 to more 
than 10 inches. Also found in Samoa. 
Acanthurus achillcs Shaw, Gen. Zool., IV, 383, 1803, no locality; Steindachner, Denks. Ak. Wiss. Wien, LXX, 1900, 193 
(Honolulu). 
Teuthis achilles, Fowler, Proe. Ac. Nat. Sei. Phila. 1900, 513 (Sandwich Islands); Jenkins, Bull. IT. S. Fish Comm., XXII, 
1902 (Sept. 23, 1903), 475 (Honolulu); Snyder, op. cit. (Jan. 19, 1904), 533 (Honolulu; Puako Bay, Hawaii). 
311. Hepatus olivaceus (Bloch & Schneider). “ Nae-nae Fig. 166. 
Head 3.76 in length; depth 2; eye 4 in head; snout 1.25; interorbital 3.25; D. ix, 24; A. 23. 
Body rather deeply ovoid, greatest depth at middle of pectoral; head deep, compressed, upper 
profile steep, convex; jaws slightly produced, lower inferior; mouth small, oblique; teeth broad, form- 
ing sharp cutting crenulate edge; margin of preopercle very oblique, angle below anterior margin of 
eye; interorbital space moderately elevated, broad, roundly convex; nostrils round, close together in 
front of eye, anterior a little below posterior, with small fleshy flap; last dorsal spines longest, about 
equal, eleventh 1.65 in head, seventeenth dorsal ray 1.5; third anal spine 2.1; seventeenth anal ray 
1.75; pectoral equal to head, pointed; ventral pointed, 1.2; ventral spine 1.8; depth of caudal peduncle 
Fig. 166 . — Hepatus olivaceus (Bloch & Schneider) . From a Formosan specimen. 
2.5; caudal deep, broad, upper rays long, produced, pointed; caudal spine depressible in a groove, 3.25 
in head; scales very small, crowded, ctenoid; lateral line arched, nearly concurrent with dorsal profile 
of back. 
Color in life (field No. 03384), general color olivaceous, breast slightly bluish, a white stripe edged 
with black running straight back from upper angle of opercle to a point below sixth dorsal spine; dor- 
sal nearly black, membranes slightly bluish; caudal nearly black, same as dorsal, posterior one-third 
white, edged with black, this white band extending from fourth ray at top to fourth ray at base, 
forward edge of band crescent-shaped; anal same as dorsal; ventrals edged with black, membranes 
mottled with blue; pectoral same as ventrals, except posterior third, which is dirty white; iris black, 
with inside edge of bright yellow. 
Another example (field No. 03009) orange olivaceous, a brownish blotch on humeral region 
inclosing an oblong area of body-color; caudal peduncle more orange, the spine dusky; lips dark; 
dorsal greenish-olive at base, the margin black; anal similar but colors brighter; caudal yellow at 
base, a lunate white border on middle rays, tips of lobes dusky; pectoral yellow, dusky at base and 
on anterior rays; ventrals blackish brown; iris yellow, with black on upper and lower parts. 
Field No. 03512 had body, head, and caudal dark brown in life; caudal with pale orange tinge 
along edge of upper and lower lobes in front, and a large white crescent along the emarginated portion 
narrowly edged with black. 
F. O. B. 1903—25 
