380
FIGURE 56. Op/egnathus punctatus and Myripristis
amaena (J. Randall).
Neomyxus leuciscus (Gunther, 1871)
BPBM 34788, 41 mm; only this one juvenile
collected in 1989; none seen in 1991 or 1992.
Family Polynemidae (Threadfins)
Polydactylus sexfilis (Valenciennes, 1831)
BPBM 34888, 191 mm. Occasional in lagoon
shallows. Uchida and Uchiyama (1986) ob-
tained specimens from depths of 1-27 m.
PACIFIC SCIENCE, Volume 47, October 1993
FIGURE 57. Abudefdufsordidus (J. Earle).
FIGURE 58. Chromis hanui and tail of Me/ichthys vidua
(J. Hoover).
Family Pomacentridae (Damselfishes)
Abudefduf abdominalis (Quoy & gaimard, Chromis ovalis (Steindachner, 1900)
1825) Figure 59
Plate lUG BPBM 35386, 2: 91-94 mm. The most abun-
Common on reefs both within and outside dant fish at Midway in reef areas outside the
the lagoon. lagoon between about 6 and 25 m, often in
Abudefdufsordidus Forsskal 1775 large aggregations. l.!chida and Uchiyama
F 57 ' (1986) reported specimens from the depthI~ure .. .. .. .. -----.Iilllge of 37-64 m. In SeQtember we notedFatrly-common-m-the-shallows-of-exposed , d' 'd I b 75 . TL II
r 'd h I I h b many III IVI ua s a out mm III ,usua y
reels outSI e t e agoon; a so seen at t e oat, h I 'th th b d It tt f
ramp in the lagoon. III sc 00. S, ~I, e su au. pa ern 0 a
broad bnght mdescent blue stnpe from upper
Chromis hanui Randall & Swerdloff, 1973 edge of eye to dorsal part of caudal peduncle,
Figure 58 broadly bordered above by yellow, this color
BPBM 34838, 2: 35-50 mm. Abundant on extending into the dorsal fin. In the main
reefs outside the lagoon, usually at depths Hawaiian Islands the adult color pattern has
greater than to m. been attained by September.