221 



the lateral line and the root of the ventral fin. Colour silvery, 

 dark above. The young ones with a black longitudinal lateral 

 band and a dorsal one, which disappears in old specimens. 

 Length 300 mm. 



Nom. in dig.: Wadong gunung (Malay. Batavia) ; Lehat, 

 Millang (Sundan.); Ahang, Modjok (Bongan). 



Habitat: Java (Batavia, Buitenzorg); Borneo (river Kapuas : 

 Sintang, mouth of Raun, Upper-Sibau and river Bongan ; river 

 Mahakam : river Bo and river Bluu ; river Baram). 



2. Tylognathus bo Popta. 



Tylognathus bo Popta, Notes Leyden Mus. XXIV. 1902 1904, p. 199. 

 Ibid. XXVII. 1906, p. 1 1 6. 



Si. 

 D. 3.8; A, 3.5; P. 1.1416; V. 1.8; L.I. 34 35; L. tr. _i_. 



51 



Height 3 2 / 3 4, almost 5 to 5 ! / 2 in length with caudal. Head 

 4 2 / 5 -4 8 / 9 > 6 6>/ 2 in length with caudal. Eye 4% 5 2 / 7 , i 3 / 5 2 2 / 5 

 in snout, 2 3 ] / G in interorbital space. Two maxillary barbels, 

 4 / 5 of the length of the eye. No rostral barbels. Origin of 

 dorsal opposite to io th scale of lateral line, separated by n 

 scales from occiput. Dorsal emarginate, its height equal to 

 that of the body or a little less. Origin of anal opposite to 2ist or 

 22nd scale of lateral line. Height of anal more or less than 

 that of ventrals, which are somewhat shorter than pectorals. 

 Origin of ventrals separated by 3 scales from nth or I2*h scale 

 of lateral line. Pectorals 4 4 ! / 2 in length, equal to or longer 

 than head. Caudal bifurcate and much longer than height of 

 body. Least height of caudal peduncle i 2 / 5 1 4 / 5 in length of 

 head, surrounded by 16 scales. Brownish above, lighter below. 

 Length 294 mm. [Type seen by us in the Leiden Museum]. 

 Habitat: Borneo (river Bo!). 



3. Tylognathus kajanensis Popta. 



Tylognathus kajanensis Popta, Notes Leyden Mus. XXIV. 1902 1904, p. 198. 

 Ibid. XXVII. 1906, p. 112. 



__ 



D. 3.8; A. 3.5; P. 1.13 IS; V. 1.8; L.I. 37 38; L. tr. i . 



551 



Height equal to head, 4 ! / 3 4 5 / 7 , 5 3 / 5 6 in length with caudal. 

 Eye 5, slightly more than twice in snout, and 2 ! / 9 2 5 / n in 

 interorbital space. Only a pair of maxillary barbels present, 



