194 



of pectorals or farther. Pectorals a little more than once to i ] / 2 

 only a little shorter than the pectorals, and by their milk 

 white colour, a little reddish in the fresh state. 



2. Clarias fuscus Cuvier & Valenciennes, Hist. Nat. Pois- 

 sons, XV. 1840. p. 383. (nee Lacepede). (Sumatra). 



This species is too shortly described to make out its dis- 

 tinctive specifical characters. 



3. Clarias jagur H. B. mentioned by von Martens, Exp. 

 nach Ost-Asien, Zool. Bd. I. 1876. p. 302, 399, from Danau Sriang 

 (Borneo), is probably Clarias nieuhofii, as Clarias jagur H. B. 

 has never been recorded since. 



2. Heterobranchus Geoffrey St. Hilaire. 



(Geoffrey St. Hilaire, Descript. Egypte, Poissons 1809. p. 305). 



For characters of the genus see those of the family. 

 Freshwater species, three from Africa and one from the 

 Indo-australian Archipelago. 



i. Heterobranchus tapeinopterus Blkr. 



Heterobranchus tapeinopterns Bleeker, Nat. Tijdschr. Ned.-Indie III. 1852. p. 



732. Atl. Ichth. II. 1862. p. 101. 

 Heterobranchus tapeinopterus Giinther, Cat. Brit. Mus. v. 1864. p. 22. 



Fig. 75. Heterobranchus tapeinopterus Blkr. 



Head from above, dentition of upper jaw and vomer and of lower jaw 

 (After Bleeker). 



B. 8; D. 2427; A. 4951; P. I. 8; 8; V. 6. 



Height 8 9'/ 2 , head measured to the operculum 5 2 / 3 6 3 / 4 . 

 Eye 15 1 8. Nasal and mental barbels reaching to base of 

 pectorals, maxillary and mandibulary barbels reaching to tip 

 of pectorals or farther. Pectorals a little more than once to 1 1 L 



