Depth 11 4 to 11-1/3, compressed elongate body roughly pentagonal; 
head 2-4/5 to 2-9/10. Snout 1-2/3 in head; eye 9 to 10, 6 to 6-| in snout, 
li to 1-1/3 in interorbital, 2-2/3 to 2f in postorbital; maxillary not 
entirely concealed by preorbital; end of mandible extending beyond snout 
ln thick, spongy, somewhat flexible tip ■which rises above so upper jaw 
rests upon it and its upper profile continuous with that of lower jaw tip 
when mouth closes; canines long, strong, pointed, vertical; head flat above 
wide, deep, median, scaleless channel and small narrow elongate groove 
each side; space between these and outer margin of interorbital with longi¬ 
tudinally divergent striae; median channel narrows abruptly anteriorly and 
prolonged in narrow median groove to tip of beak. 
Scales 194 4 10 in lateral line; 22 above lateral line to dorsal 
origin; preopercle entirely finely scaled, opercle and top of head naked. 
Lateral line forms low keel on caudal peduncle. 
D. II, 18 to II, 20, second simple ray 3 to 3—l/5 in total head; 
A. I or II, 18 to 20, second simple ray 2—2/3 to 3^; least depth of caudal 
peduncle l-l/5 in eye; caudal forked, lower lobe longer and 2-2/5 to 2|r in 
total head; pectoral 3—1/3 to 3—4/5; ventral 3^, origin midway between 
* 
hind pupil edge and caudal base, reaches lj- to anal. 
Brownish above, silvery below. Opercles and under side of head 
white. Pins colorless, except upper half of dorsal which more or less 
dusky and caudal medially dusky to blackish at outer edge. Length 390 to 
462 mm. (Herre.) 
Philippines, Borneo. Very close to Strongylura crocodilus. 
apparently only differing in the end of its jaws, which may be a condition 
of youth. 
