292 
other by about their own length and contiguous with the lateral 
patches, which are about twice as broad as long, the whole 
ao forming one rather narrow, inter- 
7 
TY a gag Tate 9 Woy 
OE A A0a, vee Leet P79 Ph rupted, arcuate band. About Io stiff, 
Gy phere) flattened gillrakers, the longest about 
EL, */, of branchial filaments and shorter 
es than the eye. Brownish above, whitish 
aoe ete ee below, fins yellowish, base of pec- 
j “ torals bluish. Length over 500 mm. 
Nomen indig.: Ikan dukang (Palemb.). 
Habitat: Sumatra (Palembang, Djambi!); Borneo (Banjer- 
massin !). 
In rivers. 
13. Arius carinatus M. Web. 
Arius carinatus Max Weber, Nova Guinea IX. livr. 4. 1913, p. 537. 
Bi 0s Dah Ns Aa TOs ea err a aN eats 
Elongate; height under dorsal spine 4°/,—5'/,, 4'/, to 
almost 5 before that spine. Head 4— ,?/,, its width 1'/,—1'/, 
in its length, its profile ascends steeply, in full grown speci- 
he OSs 
Fig. 118. Arius carinatus M. Web. nat. size. 
mens nearly in a straight line from snout to dorsal. This line. 
is the more convex in its posterior half, the younger the 
specimens are. Headshields rugose, when older granular. Occi- 
pital process scarcely longer than broad at its base, sharply 
