174 
PACIFIC SCIENCE, Vol. XIV, April I960 
Fig. 1. Auxis thynnoides Bleeker. 
Dorsal X-XI, 10-11, 8. Anal 12-13, 7. Gill 
rakers 10-11 + 1 + 32-36 = 43-48. Total 
length 262-290 mm. 
Body robust, fusiform, almost cylindrical in 
cross section. Snout short, pointed. Mouth mod- 
erate; gape to slightly past anterior margin of 
pupil. Each jaw with single row of small, weak 
teeth. Palatines and vomer toothless. Dorsal fins 
well separated. Dorsal interspace slightly greater 
than half the distance between origins of first 
and second dorsals. 
Vertebrae 20 + 19 = 39, including urostyle. 
First haemal arch on 8th vertebra; first closed 
haemal arch and first haemal spine on 21st ver- 
tebra. Haemal canal borne away from body 
of vertebra by pedicles [of Starks (1910: 97) 
= epihaemal processes of Kishinouye (1923: 
460)}. 
Body naked, except for corselet of scales. 
Corselet along lateral line extends beyond ver- 
tical through posterior end of second dorsal. 
Corselet 16—18 scale-rows wide below origin of 
second dorsal fin. Lateral line more or less un- 
dulating, without any pronounced arch. 
Body markings consist of 14-16 dark, nearly 
vertical bars over bluish background above 
lateral line. Bars often broken into spots. Dark 
continuous band over top of head and along 
dorsal margin of body. The band more or less 
uniform in width to end of second dorsal, 
whence it narrows posteriorly to base of caudal 
fin. Body below lateral line silvery white and 
free of markings or spots. 
Auxis thazard (Lacepede) 
Fig. 2 
This description is based on five specimens 
which are deposited at the POFI laboratory, 
Honolulu, Hawaii. 
Dorsal XI, 10-12, 8. Anal 13, 7. Gill rakers 
9-10 + 1 + 28-31 = 39-42. Total length 
272-283 mm. 
Body robust, more or less compressed lat- 
erally. Snout short, pointed. Mouth moderate; 
gape to well past anterior edge of pupil. Each 
jaw with single row of small, weak teeth. Pala- 
tines and vomer toothless. Dorsal fins well 
separated. Dorsal interspace less than half the 
distance between the origins of the first and 
second dorsals. 
Vertebrae 20 + 19 = 39, including urostyle. 
First haemal arch on 8th vertebra; first closed 
haemal arch and first haemal spine on 21st ver- 
tebra. Haemal canal borne away from body of 
vertebra by pedicles. 
Body naked, except for corselet of scales. 
Corselet along lateral line extends posteriorly to 
about two-thirds the distance from the origin of 
first dorsal to the origin of second dorsal. Lateral 
line only one or two scale-rows wide beneath 
second dorsal origin. Lateral line more or less 
undulating, without any pronounced arch. 
Body markings about 16 dark, oblique bars 
running posterodorsally and overlying bluish 
background above lateral line. Bars variable in 
number and often broken into spots. Dark con- 
tinuous band over top of head and along dorsal 
