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.). 



Bagrns Wyckii Bleeker, Ichth. Arch. Ind. Prodr. I. Siluri, 1858, p. 156. 

 Hemibagrus Wyckii Bleeker, Atl. Ichth. II. 1862, p. 57. 

 Macrones wyckii Giinther, Cat. Brit. Mus. V. 1864, p. 83. 



B. 10; D. II. 7; A 1315; P. I. II; V. 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 3 2 / 5 , much broader 

 than high, its greatest width being contained i J / 3 in its length. 

 Eyes looking upward, 10 u in head, more than 3 in orbital 

 space and more than 3 in snout, which is slightly less than 

 J / 3 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 



