19O 
dorsal, 13/,—2 times in length of head. Pectoral spine rather 
weak, ?/, of longest pectoral rays, rough. Teeth small, acute. 
The maxillary ones in two contiguous rectangular patches, 
broadening laterally, 2 times as broad as long. The mandi- 
bulary teeth in two contiguous quadrangular patches with 
the posterior, exterior corner laterally produced. The vome- 
rine teeth in a semicrescentic band, the posterior border in 
its middle with a prominent point. 16 gillrakers, about as 
long as branchial filaments, nearly 2 times diameter of eye. 
Uniform dark, belly and underside of head whitish. Dark 
parts of body often with white spots, which are arranged in 
13—20 transverse rows dorsally. Length 490 mm. 
Nomen indig.: Lindi (Mal. Batav.), Lembat (Djambi). 
Habitat: Java (Batavia, Buitenzorg!, Bekassi); Sumatra 
(Palembang!, Lahat, Gunung Sahilan!, Ringat!, Indragiri, 
Djambi!, Deli); Banka; Biliton; Borneo (rivers Mahakam!}, 
Barito!, Kahajan, Kapuas, Sambas, Baram, Sarawak, Balik- 
papan !). — Malacca, Philippines. 
3. Clarias batrachus (L.) [Fig. 74. p. 187]. 
Silurus Batrachus Linné, Syst. Naturae 1758, p. 305. 
Silurus batrachus Bloch, Ausl. Fische VIII. 1794, p. 44. 
Macropteronotus batrachus Lacépéde, Hist. Nat. Poiss. v. 1803, p. 84. 
Macropteronotus magur Hamilton Buchanan, Fishes Ganges, 1822, p. 146, 374. 
Clarias batrachus Bleeker, Atl. Ichth. II. 1862, p. 103 (see syn.). 
Clarias maguy Giinther, Cat. Brit. Mus. v. 1864, p. 17. 
Clarias batrachus Kner, Novara Exp. Fische, 1865—1867, p. 299. 
Clarias batrachus Peters, Monatsber. Akad. Wiss. Berlin 1868, p. 271. (see syn.). 
Clarias magur Day, Fishes India 4°. 1878—1888, p. 485. 
Chlarias batrachus Fowler, Proc. Acad. Nat. Sci. Philad. (2). LVII. 1905, p. 461. 
Clarias magur Jordan & Seale, Proc. U.S. Nat. Mus. XXXIII. 1908, p. 535. 
B. 7—9; D. 60—76; A. 47—58; P. I. 8—11; V. 6. 
Elongate. Height 6—7'/,, head 4?/,—5 to gillopening, 3'/,—37/, 
to the top of the occipital process. Greatest breadth above 
opercles about equal to head. Occipital process triangular, 
its height about twice in its base, more blunt in old speci- 
mens. Occipital fontanel at least 2 times shorter than the 
frontal one, lastnamed extends to the middle of the eye or 
farther forward. Head granular. Eyes 9—14. Eye-distance 
greater than mouthopening, less than twice in head. Nasal 
barbels extend to occipital fontanel, equal to mental barbels; 
