rt 
on head and body of equal size. Twenty to 22 transversal 
rows on pracoperculum. A double series of 37—45 spines 
along the abdomen. First branchial arch with 11 stout gill- 
rakers, spinous at the innerside, longer than branchial fila- 
ments, about */, of eye, and below these a series of ten blunt 
short protuberances at the innerside. More or less silvery, 
back dark; when young sometimes with more than 20 oblique 
double silvery transverse stripes. Pectorals and ventrals hya- 
line, dorsal, anal and caudal dark. Axil of pectorals black. 
Rarely dark spots or a series of 4 or 5 black patches in the 
caudal region. Length 875 mm. 
Nom. indig.: Lopis, Kapirat (Mal.). 
Habitat: Java (Batavia, Samarang); Sumatra (Palembang, 
Gunung Sahilan!, Djambi!, Deli); Nias!; Borneo (Banjer- 
massin, Pengaron Sintang, Djonkong!, rivers Mahakam and 
Kapuas). — Siam; Burmah; Lower Bengal to Sind. 
In freshwater. 
3. Notopterus borneensis Blkr. 
Notopterus borneénsis Bleeker. Nat. Tijdschr. Ned. Indié. II. 1851, p. 437. 
Notopterus maculosus Bleeker. Nat. Tijdschr. Ned. Indié. II. 1851, p. 438. 
Notopterus borneénsis Bleeker, Atl. Ichth. VI. 1866—1872, p. 147. 
Notopterus borneensis Ginther. Cat. Brit. Mus. VII. 1868, p. 479. 
Notopterus borneensis Volz. Zool. Jahrb. Abt. Syst. XIX. 1903, p. 410. 
Notopierus borneensis Fowler. Proc, Acad. Nat. Sc. Philad. (2). LVIII. 1905, 
p. 489. 
Beto. O10; A. ti2—124 537 Pc 16—17;)' Vs 4-53. La tr. 
about 75 (in a vertical line through origin of anal). 
Oblong, compressed. Dorsal profile convex between vertex 
and dorsal. Upper profile of head concave. Height 37/,—4, 
head 4°/,—5, eye 4°%/,—5, longer than snout. Maxillary rea- 
ching to hindborder of eye or a little farther, 2'/,—2'/, in 
length of head. Lower border of suborbital bone, lower border 
and ridge on praeoperculum slightly serrated. Origin of dorsal 
about midway between snout and base of caudal in young 
specimens, in adults midway between eye and base of caudal. 
Pectorals as long as or shorter than postorbital part of head. 
Scales on opercles not larger than those on body, 12—16 
transversal rows on praeoperculum. A double series of 37—4I 
spines along the abdomen. Gillrakers unknown. Grayish silvery, 
