356 
margin, other fins brownish. Length 120 mm. [Type and 
specimens of Bleeker’s collection in the Leyden Museum seen 
by us]. 
Nomen indig.: Tengkrian (Mahakam). 
Habitat: Java; Sumatra (Palembang!, Djambi!, Lahat); 
Borneo (rivers Kapuas, Mahakam, Seminis). — Malacca. 
In rivers. 
4. Leiocassis poecilopterus (C. V.). 
Bagrus poecilopterus Cuvier & Valenciennes, Hist. Nat. Poissons XIV. 1839, p. 431. 
Leiocassis poecilopterus Bleeker, Ichth. Arch. Ind. Prodr. I. Siluri, 1858, p. 140. — 
Ath Wehth Al. 1862: p. 53; 
Liocassis poecilopterus Giinther, Cat. Brit. Mus. V. 1864, p. 89. 
B. 10-115 DP. 7 3 Aas 105 BPs 7-0 poVien: 
Rather robust, dorsal profile of head straight, slightly con- 
vex behind head to dorsal. Height 37/,—4, head 37/,—37/,, 
covered by soft skin, its height equal to its breadth but much 
less than its length, concealing the narrow, triangular occipital 
process, which is about twice as long as broad at its base, 
touching the narrow, prolonged, triangular basal bone of the 
dorsal spine. Eye nearly 6, situated at the end of the anterior 
half of the head, more than twice in the prominent, conical 
snout, which is much longer than the interorbital space. Bar- 
bels very slender. Nasal barbels reaching to middle of eye, 
maxillary barbels to hindborder of eye, mandibulary barbels 
shorter, mental ones still shorter. Height of dorsal ?/, of head, its 
strong spine equal to head without snout, strongly denticulated 
behind. Base of adipose fin about '/, longer than that of 
dorsal, its distance from dorsal nearly equal to its own length. 
Height of the rounded anal slightly less than that of the 
dorsal, its origin before that of adipose fin. The very strong 
pectoral spine scarcely longer than the dorsal one, strongly 
denticulated behind. Ventrals not reaching anal, their origin 
somewhat behind end of dorsal. Caudal deeply forked, its 
lobes rounded. Least height of caudal peduncle about 1'/, 
times in its length. Teeth in upper jaw in a nearly straight, 
rather broad band, in the lower jaw and on the palate in a 
strongly curved band. Darkish brown, lighter below. An occi- 
pital and a dorso-ventral irregular lighter crossband as well 
as one on the caudal peduncle. Fins with dark bands. Length 
over 180 mm. 
