372 
transverse rows on the body, one on the occipital region, a 
second before dorsal spine, a third below the middle of the 
dorsal fin, a fourth just behind it. On the caudal peduncle 
they form vertical bands, situated on the sides. Ventral surface 
uniform yellowish. Length of single specimen known 26 mm. 
[Type in Leyden Museum seen by us]. 
Habitat: Borneo (river Mahakam!). 
Fig. 150. Akysis variegatus (Blkr.). 
2. Akysis variegatus (Blkr.). 
Pimelodus variegatus Bleeker, Nat. & Geneesk, Arch. Ned. Ind. III (2). 1846, p. 177. 
Akysis variegatus Bleeker, Ichth. Arch, Ind. Prodr. I. Siluri, 1859, p. 235. — 
Atl. Tchth. Il 18625 p.565; ‘ 
Akysis variegatus Giinther, Cat. Brit. Mus. V. 1864, p. 96. 
B.t03, (Des, Sees 8S)" srs ie he OFe Veo. 
Height about 5, head about 4, somewhat broader than long, 
its height */, of its width. Rhombic median groove visible through 
the skin as also the carinated occipital process. Eyes in the an- 
terior part of the head, very small. Nasal barbels reaching to 
base of pectorals, maxillary ones on first '/, of pectorals, mandi- 
bulary ones somewhat farther, mental ones shorter (according 
to Bleeker the barbels are shorter). Dorsal spine furrowed, as 
long as distance from posterior nostril to end of head, with 
4 
