343 
head. Shields of head nearly smooth, with a superficial median 
groove reaching nearly to the occipital process, which is covered 
by skin. Nasal barbels reaching the eye, maxillary barbels the 
base of the ventrals, mandibulary barbels the base of pectorals, 
mental ones much shorter. Dorsal equal to head without snout 
or somewhat longer, the osseous part of its spine is scarcely 
half as long as head, slightly serrated behind; base of dorsal 
about equal to its distance from adipose fin, which is situated 
above anal, slightly longer than that fin and about equal to 
dorsal. Caudal deeply forked, with the lobes pointed. Ventrals 
not reaching to anal, situated below posterior rays of dorsal, 
longer than half head. Pectorals as long as head without 
snout, their strong, flattened spine, with the hindborder denti- 
culated, somewhat shorter, but much longer than dorsal spine. 
Villiform teeth in curved bands, the band of the palate as 
broad as or broader than that of the maxillary. Dark violet, 
lowersurface whitish, fins violet. Length 335 mm. 
Nomen indig.: Bawon, Bawon kuning (Malay. Batavia); 
Singal (Sundan.). 
Habitat: Java (Batavia, Buitenzorg, Parongkalong, Garut!); 
Sumatra (Telokbetong, Pangabuang, Lahat, Trussan, lake Sing- 
karah!, Indragiri, Upper Langkat, Serdang!, Deli); Borneo 
(rivers Mahakam, Kapuas, Bongon, Sarawak). -——- Malacca. 
In rivers. 
7. Macrones wycki (Blkr.). 
Bagrus Wyckii Bleeker, Ichth. Arch. Ind. Prodr. I. Siluri, 1858, p. 156. 
Hemibagrus Wyckit Bleeker, Atl. Ichth. II. 1862, p. 57. 
Macrones wychii Giinther, Cat. Brit. Mus. V. 1864, p. 83. 
paren i 7s Noh Po Libs) WV. 6: 
Oblong, head very broad and flat, snout bluntly rounded, 
prominent, mouthopening in a smooth curve, head smooth 
above, occipital process short not extending to the interspinal 
bone of the dorsal. Height about 5, head 37/;, much broader 
than high, its greatest width being contained 1'/, in its length. 
Eyes looking upward, 10—11 in head, more than 3 in orbital 
space and more than 3 in snout, which is slightly less than 
1/, of the head. Nasal barbels nearly reaching the eye, maxil- 
lary barbels extending to the dorsal fin or nearly to the 
adipose fin. Mandibulary barbels nearly. reaching hindborder 
of gillmembranes, mental ones much shorter. Dorsal equal to 
