Depth 5 4/5 to 7; head 3 2/5 to 3 7/10? width 1 2/5• Snout 3 4/5 
in head; eye 5 to 8, 2 1/5 in snout; maxillary reaches little beyond eye, 
length 2 1/5 in head; jaws equal, mouth only slightly oblique; teeth in 
broad bands in jaws, and in broad triangle on vomer with corners produced 
somewhat backward; front nostril in tube, remote from posterior and adjacent 
to upper jaw; interorbital 2 4/5 to 2 9/10 in head, broad, slightly concave. 
Gill membranes meet under middle of and joined within to isthmus under hind 
end of preopercle. 
Scales 120 to 130 in lateral series. Scales smooth, irregular, 
small and imbedded on breast and head. 
Dorsal VI - 12 to 14, third spine 4 2/5 in head, second branched 
ray 2 3/5? Anal 10 or 11, first branched ray 4, last ray 3? caudal b|, 
acutely rounded behind; least depth of caudal peduncle 2 1/6; pectoral 
ventral 2 1/8. 
Dark above and on upper 2/3 of side, contrasted white below from 
breast to caudal peduncle, and on lower part of cheeks and opercles. Dark 
meeting white on sides in very irregular line, with an upward streak of 
white on one side of caudal peduncle, spot on other. Three dark stripes 
slant downward and backward across face, middle one from below eye, lowest 
from maxillary, upper 2 boldly contrasted against white background. Lower 
jaw to across branchiostegals gray. Fins d ark. Ventral fins bordered 
pale and vertical fins with s1ight pale edges. Black area on upper caudal 
base bordered in front by pale semicircle to form imperfect ocellus, and 
pale mark on lower caudal base below. Caudal with 2 or 3 faint vertical 
rows of pale spots. 
Length 45 to 162 mm. (Nichols.) 
New Guinea. Apparently differs from Bostrvchus sinensis chiefly in 
the 2 conspicuous dark stripes on the lower side of the head. 
