B. 9; D. 7074; A. 6063; P.I. 79. V. 6. 



Elongate. Height 7 8, head to gillopening 5 1 / 3 to more than 

 6, head to occipital process 4 5. Greatest breadth above 

 opercles about equal to head. Occipital process triangular. 

 Its height about twice in its base. Occipital fontanel con- 

 spicuously shorter than the frontal one; lastnamed extends to the 

 frontborder of the eye. Eyes 10 n. Eye distance conspicu- 

 ously more than mouthopening, equalling postorbital part of 

 head. Nasal barbels extend to occipital process. Maxillary 

 barbels reaching pectorals or surpassing them. Mandibulary and 

 mental barbels considerably shorter. Distance between origin 

 of dorsal and occipital process 2 l / 2 times in the distance from 

 lastnamed to snout. Caudal rounded, not united with anal 

 and dorsal. Ventrals rounded, extending on anal, 2 / 3 of pec- 

 torals. Pectorals rounded, equalling head without snout or a 

 little longer, their spine weak, very short, about ! / 2 2 / 3 of 

 pectorals, much shorter than postorbital part of head (to gill- 

 opening), their frontborder a little rough. Teeth in the maxil- 

 laries in two contiguous quadrangular patches, about twice as 

 broad as long, mandibulary teeth in two contiguous quadran- 

 gular patches, with the posterior corner laterally produced. 

 Vomerine teeth in a crescentic band, its hind border sometimes 

 more or less prominent in the middle. About 16 gillrakers, 

 shorter than branchial filaments. Dark, underside of head and 

 belly lighter. Body and tail with light spots, dorsally arranged 

 in transverse rows. Median fins with a lighter border. Length 

 more than 200 mm. 



Habitat: Java (Batavia (Brit, mus.) Buitenzorg!, Tjikoppo, 

 Pondok gedeh, Kadu); Sumatra (lake Toba!, Indragiri, Lahat); 

 Singkep!; Borneo (rivers Kapuas, Sambas, Serawak, Riko)!. 

 Malacca, Ceylon. 



5. Clarias leiacanthus Blkr. 



Glorias leiacanthtis Bleeker, Nat. Tijdschr. Ned.-Ind. II. 1851, p. 430. Ichth. 



Arch. Ind. Prodr. I. Siluri, 1858, p. 347. Atl. Ichth. II. 1862, p. 104. 

 Clarias liacanthtis Giinther, Cat. Brit. Mus. v. 1864, p. 20. 

 Clarias liacanthus Vinciguerra, Ann. Mus. Civ. Genova XVI. 1880, p. 166. 

 Clarias liacanthus Steindachner, Abh. Senckenb. Ges. XXV. 1901, p. 443. 

 Chlarias leiacanthus Fowler, Proc. Acad. Nat. Sci. Philad. (2) LVII. 1905, p. 461. 

 Clarias liacanthtis Popta, Notes Leyden Mus. XXVII. 1906, p. 18. 



B. 9; D. 7678; A. 6062; P. I. 89; V. 6. 



Elongate. Height 6 6 4 / 3 , head (to gillopening) 5 ! / 3 6, to 



