243 
flexible, gradually setaceous, reaching the anterior border of 
the opercle; in the female rounded and rather stiff in their 
proximal half, distally flattened into a rather thick broad 
membrane, one border of which ‘is split into 3—5 long 
threads, the longest of which forms the end of the barbel 
and reaches to the middle of the pectorals. Mandibulary 
barbels far distant behind symphysis, extremely thin and 
nearly as long as pupil. Anal ceases before caudal, which is 
deeply forked, its lobes slightly pointed and shorter than 
the head. Ventrals reaching to second anal ray, pectorals 
Fig. 85. Hemisilurus moolenburghi n.sp. 9. 2 anterior, 
> 
n' posterior nostril. 3/4 n.s. 
which are slightly pointed and about '/, shorter than head, a 
little farther. Villiform teeth in the upper jaw in two broad, 
gently curved bands, the bands in the lower jaws are more 
curved and narrowing laterally. Vomerine teeth in two oval 
patches. 12 gillrakers, a little shorter than branchial filaments. 
Upper half greyish, lower half bluish pearl-colour, pectorals, 
ventrals and caudal more or less blackish, anal bordered with 
black. Length more than 500 mm. 
Nomen indig.: Silung buda (Djambi). 
Habitat: Sumatra (river Batang Hari!). 
