350 
acute. Small teeth in the jaws in a short, slightly curved band, 
those on the vomer in a small subsemilunar patch. Brownish 
with a diffuse irregular cephalic, dorso-ventral, dorso-anal and 
caudal cross band. Fins, with exception of the adipose and 
caudal fin, blackish in their distal half. Length 256 mm. 
[After Bleeker; not seen by us]. 
Habitat: Sumatra (Palembang, Muara kompeh). — Siam. 
In fresh water. 
3. Bagroides macracanthus Blkr. 
Bagroides macracanthus Bleeker, Nat. Tijdschr. Ned. Indié, VII. 1854, p. 88. — 
Ichth. Arch, Ind. Prodr, I. Siluri, 1858, p. 137. 
Pseudobagrichthys macracanthus Bleeker, Atl. Ichth. Il. 1862, p. 50. 
Bagroides macracanthus Giinther, Cat. Brit. Mus. V. 1864, p. 91. 
? Leiocassis macropterus Vaillant, Notes Leyden Museum, XXIV, n°. 1-3, 1902, p. 58. 
Bagroides macracanthus Volz, Revue Suisse Zool. XII. 1904, p. 469. 
> Bagroides Vaillantii Popta, Notes Leyden Museum, XX VII. 1906, p. 228, footnote. 
Bs,73 Ds dl 7) A ena eno: 
Elongate, compressed. Height about 4; head about 5'/,, 
conical, acute, convex, longer than high and broad. Occipital 
process about thrice longer than broad at its base, straight, 
its slender end touching the much elongated slender smooth 
basal bone of dorsal spine. Eyes about 4?/,, somewhat more — 
than one eyediameter apart. Snout less than twice longer than 
eye, strongly convex and rounded, prominent. Lips fleshy. 
Width of mouth much less than twice the diameter of the 
eye. Six conspicuous mental pores in two rows, the anterior 
row consisting of two. Barbels slender, the nasal ones reaching to 
posterior part of eye, the maxillary ones to operculum, the man- 
dibulary ones to branchial opening, the mental ones still shorter. 
Height of dorsal slightly more than that of body, double its 
base. Its spine moderate, much longer than head, its hind- 
border with strong teeth directed upward. Adipose fin not 
free behind, but adnate at the back, commencing at a very 
short distance from the dorsal and more than 4 times 
longer than it. Anal convex, lower than body, opposed to 
middle of adipose fin and 4 times shorter than it. Pectoral 
spine not stronger than the dorsal one, but much shorter, its 
hindborder strongly serrated. Caudal deeply forked, its lobes 
acute. The teeth in upper jaw and on vomer in a subsemi- 
lunar band, those in the lower jaw obtuse, conical, the outer 
