327 
4. Hemipimelodus borneensis (Blkr.). 
Pimelodus borneensis Bleeker, Nat. Tijdschr. Ned. Ind. II. 1851, p. 430. 
Hemipimelodus borneensis Bleeker, Ichth. Arch. Ind. Prodr. I. Siluri, 1858, 
p. 238. — Atl. Ichth. II. 1862, p. 43. 
Hemipimelodus borneensis Giinther, Cat. Brit. Mus. V. 1864, p. 176. 
Bogs Dt 75 AS 1re—20; \P. it. 910; V. 6. 
Elongate. Height 5—5?/,, head 4—4'/,, its breadth 11/,—11/, 
in its length. Rostro-dorsal profile of head and neck convex. 
Head granulated above, occipital process keeled, triangular, 
longer than broad, extending on to the short basal bone of 
the dorsal spine. A long median fontanel reaching to the 
occipital process. Snout obtusely rounded, slightly prominent. 
Mouth rather small, 2?/,—3 in length of head, transverse. The 
maxillary barbels extend to the end of the head, the mandibulary 
barbels do not reach the branchial opening and are longer than 
the mental ones. The eyes 7—8, small, covered by skin, situated 
between the anterior and middle thirds of the head, thrice in 
the width of the interorbital space and about twice in the 
length of the snout. Dorsal about as long as height of body, 
its spine strong, serrated behind, as long as or shorter than 
the head. Base of adipose fin rather longer than the dorsal, 
its length being more than half its distance from the dorsal. Anal 
slightly emarginate, little longer than adipose fin. Ventrals 
17/,—1°/, in length of head. Pectorals a little shorter than 
head, their spine strong, as long as that of the dorsal or a 
little longer, strongly serrated behind, weakly at the top of its 
frontborder. Caudal forked, with pointed lobes. Villiform teeth 
in a slightly curved band in the upper jaw, the band in the 
lower jaw more curved, broader, but antero-posteriorly shorter. 
Olivaceous above, margariteceous below. Length 200 mm. 
[Not seen by us}. 
Nom. indig.: Anak dukang (Palembang). 
Habitat: Sumatra (Palembang); Borneo (Sarawak, rivers 
Barito and Sambas. — Siam. 
In rivers. 
5. Hemipimelodus macrocephalus Blkr. 
Hemipimelodus macrocephalus Bleeker, Ichth. Arch, Ind. Prodr. I. Siluri, 1858, 
p- 239. — Atl. Ichth. I]. 1862, p. 43. 
Hemipimelodus macrocephalus Giinther, Cat. Brit. Mus. V. 1864, p. 176. 
