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FAMILY Acanthuridae (SURGEONFISHES)
Acanthurus achilles Shaw, 1803
Hepatus achilles Fowler and Ball, 1925.
*Acanthurus blochii Valenciennes in C and V
1835
One specimen, BPBM 8989, 243mmSL,
speared by Randall on the ocean reefin 2 m on
28 July 1968. Usually identified as Acanthurus
mata (cuvier), but this is the oldest name for
the surgeonfish most authors have called A.
bleekeri Giinther (Randall, ms.).
*Acanthurus dussumieri Valenciennes in C and
V,1835
One adult individual was sighted by Ral-
ston from Makali'i in 131 m. Another was
photographed in· a mixed aggregation of
fishes dominated by Hemitaurichthys thomp-
soni (Figure 48).
Acanthurus glaucopareius cuvier, 1829;
Brock, Jones, and Helfrich 1965
Acanthurus guttatus Schneider in Bloch and
Schneider, 1801; Brock, Jones, and Helfrich
1965
Acanthurus nigricauda Duncker and Mohr,
1929
Hepatus nigricans Fowler and Ball, 1925.
These authors reported three specimens of
this surgeonfish from Johnston Island and one
from Wake Island, giving the lengths as 305 to
323 mm. Bishop Museum, however, has only
one Fowler and Ball specimen from Johnston
(BPBM 4286, 185mm SL, 253mm TL) and
three from Wake Island (BPBM 4285, 200 to
216 mm SL, 272 to 316 mm TL). Since there is
no other record of this species from Johnston,
we never observed it there, and the number of
. specimens and their lengths do not agree with
the text of Fowler and Ball, we admit to the
possibility of locality error for this species.
Acanthurus nigroris Valenciennes in C and V,
1835
Hepatus lineolatus (Bleeker), as reported by
Fowler and Ball 1925.
PACIFIC SCIENCE, Volume 39, January 1985
Acanthurus elongatus (non Lacepede), Gos-
line, 1955. It is odd that the wide-ranging
A. nigrofuscus (Forsskal) has not been found
at Johnston.
Acanthurus olivaceus Schneider in Bloch and
Schneider, 1801
Hepatus olivaceus Fowler and Ball, 1925.
*Acanthurus thompsoni (Fowler, 1923)
One adult individual photographed (Figure
48) from Makali'i in an aggregation of
Hemitaurichthys thompsoni.
Acanthurus triostegus (Linnaeus, 1758); Smith
and Swain 1883
~andall (1956) classified the Hawaiian and
Johnston Island populations of this wide-
ranging surgeonfish as Acanthurus triostegus
sandvicensis Streets.
Ctenochaetus hawaiiensis Randall, 1955;
Brock, Jones, and Helfrich 1965
Ctenochaetus marginatus (Valenciennes in C
and V, 1835)
Ctenochaetus cyanoguttatus Randall, as re-
ported by Brock, Jones, and Helfrich 1965.
Randall (ms.) has concluded that C. margi~
natus (Valenciennes), a new name for Acan-
thurus guttatus (non Bloch and Schneider)
Kittlitz, seems to be the same species as C.
cyanqguttatus.
Ctenochaetus strigosus (Bennett, 1828);
Fowler and Ball 1925; Randall 1955
Ctenochaetus striatus (non Quoy and
gaimard); Halstead and Bunker, 1954.
*Naso hexacanthus (Bleeker, 1855)
Observed by Randall and others from
Makali'i at depths of 46-164m. Two adults
observed at close range by Randall and Lobel
while diving with SCUBA outside the reef
northeast of the small boat channel in 18 m.