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 



Fl g 3 2 - Opisthopterus macrognathus Blkr. 



and tongue. Gillrakers about 



3 0, StOUt, minutely spinulous . ' ^~^1, "' maxillary / ligament 



between them, s r supplemental bones, x 3- 

 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. 



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. 



i. Raconda russelliana Gray. 



Raconda russelliana Gray, Zool. Miscell. 1831, p. 9. 



Raconda russelliana Cantor, Journ. Asiatic Soc. of Bengal, XVIII. 1850, p. 1274. 



INDOAUSTRALIAN FISHES II. 7 



