Gonostomatidae-— Grey 
463 
cular linings brown, inside of mouth pale ante- 
riorly and brown posteriorly. 
Largest specimen ( abdomen damaged ) , a fe- 
male with large ovaries. 
Counts and measurements are in close agree- 
ment with those found in published descriptions 
of this species. The body depth is possibly some- 
what greater in Hawaiian specimens and the 
count, in one, of 1 1 + 7 gill rakers is unique. 
These specimens represent the second Pacific 
record of G. atlanticum. The first capture was 
in the Marshall Islands area (Grey, I960). The 
species is probably more widely distributed in 
the central portions of the Pacific Ocean than 
is known at present. 
Cyclothone sp. 
MATERIAL EXAMINED: 3 specimens, standard 
length ca. 20.5, ca. 23, and ca. 23.5 mm., col- 
lected off the Mauna Loa lava flow, Hawaii, by 
Moore et al., June 3, 1950. 
Specimens all in poor condition; following 
characters common to all: first vav very close to 
ventral base, anus directly below it; VAV evenly 
spaced; color pale brownish, abdomen darker, 
myomeres outlined in darker pigment; on 1 
specimen a shred of skin with a few black spots 
remaining, its original position on body not 
determinable; 2 narrow vertical brown bars at 
extreme end of caudal peduncle, 1 above mid- 
line and 1 below mid-line; dashes of internal 
pigment at end of caudal peduncle; a series of 
6 internal brown spots along base of dorsal fin 
and 18 along anal base; ventral portion of body 
between ventral and anal fins, below muscula- 
ture, entirely colorless and transparent, the VAV 
photophores situated in this region; branchi- 
ostegal membrane with a narrow brown line at 
base and a broken line of brown pigment on 
edge, otherwise colorless; a bar of brown pig- 
ment curving down from pectoral base and ex- 
tending forward on isthmus. 
Specimen ca. 23.5 mm.: BR 8; VAV 4, possibly 
only 3 ( fourth at first anal ray ) . IV, AC, and OA 
all lost or damaged. Maxillary teeth subequal, 
becoming gradually larger posteriorly, first one 
not larger than those immediately behind it. 
Specimen ca. 23 mm.: BR 8, iv 13. vav 4, 
possibly only 3 (fourth at first anal ray). AC 
and OA mostly lost. Dorsal rays probably 12, 
anal rays probably 19. 
Specimen ca. 20.5 mm.: BR 7. IV and VAV 
mostly lost. AC 9 or 10, last one on caudal base. 
Last two VAV present, last at anal origin; if 
this photophore belongs to the AC series, the 
total number is 10. Gill rakers on first arch 
9+1 + 3 = 13, only 1 in angle. Vomer tooth- 
less. Palatines and pterygoids each with 3 micro- 
scopic teeth. Ventral fins undamaged, reaching 
to or slightly past anal origin. 
Both the poor condition of the Hawaiian 
specimens and the uncertain taxonomic status 
of species of the genus Cyclothone Goode and 
Bean prevent positive identification of these 
specimens. They are allied to C. signata Garman 
and C. alba Brauer ( pale coloration, a single gill 
raker in the angle of the first arch, no vomerine 
teeth) and are possibly identical with C. alba. 
However, C. alba was described with an AC 
count of 12 or 13, similar to that of C. signata , 
and the AC number is only 9 or 10 on the only 
Hawaiian specimen on which these photophores 
are preserved. The total number of gill rakers 
on the first arch is similar in all 3 forms, 13 in 
the 1 Hawaiian specimen on which they can be 
counted, 14—15 in C. signata and C. alba. C. alba 
and the Hawaiian specimens have 7-8 BR pho- 
tophores, in contrast to the 9 or 10 of C. signata. 
Both the first VAV photophore and the anus of 
the Hawaiian specimens are extremely close to 
the ventral bases. In C. alba these were figured 
by Brauer (1906: 80, fig. 30) as being placed 
somewhat more posteriorly. However, in speci- 
mens examined from the Atlantic (Florida), 
probably identical with C. alba, the first VAV is 
also closer to the ventral bases than shown in 
Brauer’s figure and this character may be a vari- 
able one. 
Although it is no surprise to learn that a light- 
colored Cyclothone inhabits Hawaiian waters, 
the only species of the genus hitherto reported 
from the area have been the dark-colored forms 
C. atraria Gilbert and C. canina Gilbert. 
Araiophos, NEW GENUS 
type SPECIES: Araiophos gracilis, new species. 
Eye normal, large. Snout shorter than orbit. 
Interorbital width at center of eye less than 
diameter of orbit or length of snout. Mouth 
