97 
postorbital part of head. Maxillary about twice in head, nearly 
vertical, its ventral border denticulated in its anterior half, 
its broad caudal end reaching farther than the broad caudal 
end of the supplementary bone. Operculum rounded behind, 
oblique below, praeoperculum triangular. The distance between 
the origin of dorsal and caudal is a little longer than half its 
distance from snout. Origin of dorsal more than twice the 
length of the dorsal behind the vertical through origin of anal. 
Pectorals much longer than 
head. Scales deciduous, not 
or irregularly striated. Thirty 
to 33 sharp, keeled and curv- 
ed abdominal scutes. Teeth 
on jaws, palatines, pterygoids 
and tongue. Gillrakers about 
- 30, stout, minutely spinulous 
all round, much longer than 
branchial filaments, about as long as pupil. Silvery, except on 
the back, sometimes a dark patch on the upper part of oper- 
culum. Fins hyaline. Length up to 225 mm. 
Nomen indig: Lipiram (Javan.). 
Habitat: Java (Batavia! Tjilatjap!); Sumatra (Benkulen, 
Padang, Priaman); Singapore; Borneo (Sinkawang, Sampit, 
Sarawak, Matang). — Sea and estuaries. 
Fig. 32. Opisthopterus macrognathus Blkr. 
i Intermaxillary, 7 maxillary, 7 ligament 
between them, s s’ supplemental bones. x 3. 
6. Raconda (Gray) Cantor. 
(Cantor, Journ. Asiat. Soc. Bengal XVIII, 1850, p. 1274). 
Oblong, much compressed, belly very convex, abdomen 
feebly serrated. Scales moderate, thin, very deciduous. Lower 
jaw projecting, maxillary tapering behind and produced as 
far as gillopening in adults. Teeth minute, in the jaws in a 
single series, in velvety patches on palatines, pterygoids and 
tongue, none on vomer. Dorsal and ventral fins wanting. Anal 
long, with more than 80 rays, upper pectoral ray enlarged. 
Caudal deeply forked. Pseudobranchiae well developed. 
1. Raconda russelliana Gray. 
Raconda russelliana Gray, Zool. Miscell. 1831, p. 9. 
Raconda russelliana Cantor, Journ. Asiatic Soc. of Bengal, XVIII. 1850, p. 1274. 
INDO-AUSTRALIAN FISHES II, 7 
