258 
distance behind, with an anterior lip. Eye 3'/, behind corner 
of mouth, about twice in the convexity of the interorbital 
space, somewhat less in their distance ventrally; its lower half 
below level of mouth, which is subterminal. Distance between 
corners of mouth 2-2!/, in head. Height 5-5'/,, head 5'/,-5'/,, 
covered by soft skin above. Maxillary barbels originating at 
the corner of the mouth, their anterior part hidden in a 
suborbital slit, extending to the axil of the pectorals or some- 
what farther, mandibulary barbels longer than the eye. Dorsal 
with the first ray the longest, equal to head, its spine with 
a long filament, its osseous part nearly equal to head, flattened, 
with the hindborder denticulated, preceded by a broad but 
very short rudimentary spine. Adipose fin above the hindmost 
1/, of the anal, shorter than the eye. Anal nearly thrice in 
length, ventrals shorter than head without snout, not reaching 
on anal. Pectorals shorter than head, their strong, flattened 
spine, denticulated at its hindborder, equal to head. Caudal 
deeply emarginate. Villiform teeth in the upper jaw in a 
slightly curved band, those of the lower jaw in a horseshoe- 
shaped band. Vomerine teeth, separate from the oblong 
palatine patches, in a broad nearly quadrangular patch, the 
greatest breadth of which is more than 1'/, its length. Pearl- 
colored with a silvery hue, upper surface blackish, fins yellowish, 
distal part of dorsal, ventrals, pectorals and caudal blackish, 
pectorals sometimes entirely black. Length over 500 mm. 
Nomen indig.: Ikan juaro (Palembang, Banjuasin). 
Habitat: Java; Sumatra (Palembang!, Banjuasin); Borneo 
(rivers Mahakam, Barito!, Kapuas, Baram, Limbang). — Siam. 
In rivers. 
4. Pangasius nieuwenhuisi (Popta). 
Neopangasius Nieuwenhuisii Popta, Notes Leyden Museum XXIV. 1904, p. 180 
and XXVII. 1906, p. 30. 
Dd 7 Bee Or ab. oi ele = aoe 
Height 4, head 4°/,, covered by soft skin. Snout obtuse, 
broad, rounded, prominent. Eye 7?/,, situated behind te corner 
of the mouth and partly below it. Interorbital space convex, 
*/, in the length of the head. Maxillary barbels originating 
in a slit, commencing above the angle of the mouth and 
continued farther than hindborder of eye, the barbels nearly 
reaching base of pectoral. Mandibulary barbels */, of the length 
