2I 9 



v 



Cryptop tents micropus Giinther, Cat. Brit. Mas. V. 1864, p. 42. 

 Kryptopterus cryptopterus Fowler, Proc. Acad. Nat. Sc. Philadelphia (2) LVII. 

 1905, p. 468. 



B. 10 II; D. 2; A. 6470; P. 1. 1315; V. 67. 



Elongate, compressed, dorsal profile nearly straight. Head 

 depressed. Height 4 3 / 4 5'/ 2 > head SVs" 61 /4- E y e about 3> 

 equal to snout, visible from below, its lower half below the 

 cleft of the mouth, behind which it is situated, twice in the 

 convexity of the interorbital space. Anterior nostrils tubular, 

 near the end of the snout, semitubular posterior nostrils at 

 some distance behind. Upper jaw prominent. Maxillary barbels 

 a little lateral of the anterior nostrils, extending to base of 

 pectorals, mandibulary barbels far behind symphysis, about 

 as long as pupil. Anal free from caudal but connected by 

 membrane with base of the caudal. Ventrals about as long 

 as the eye, pectorals extending to anal, much longer than 

 head. Pectoral spine strong, -somewhat shorter, or longer than 

 head. Caudal deeply incised. Maxillary teeth in a narrow 

 semicircular band, broadening posteriorly, in each mandible in 

 an equal broad band, those on the vomer in a curved band. 

 Colour yellowish with a golden hue, powdered with minute 

 black spots, especially on the head and on the pectorals. 

 Length about 200 mm. 



Nomen in dig.: Lais tungul (Djambi). 



Habitat: Sumatra (Palembang, Djambi!, Banjuasin); Borneo 

 (Banjermassin !, Sambas, Sintang, Baram). Malacca, Siam. 



In fresh water. 



6. Cryptopterus limpok (Blkr.). 



Silurus limpok Bleeker, Nat. Tijdschr. Ned. Indie III. 1852, p. 583. 

 Kryptopterus limpok Bleeker, Ichth. Arch. Ind. Prodr. I. Siluri, 1858, p. 286. 



Atl. Ichth. II. 1862, p. 87. 



Cryptopterus limpok Giinther, Cat. Brit. Mus. V. 1864, p. 39. 

 Cryptopterus limpok Steindachner, Abh. Senckenb. Naturf. Ges. XXV. 1901, p. 444. 

 Kryptopterus limpok Fowler, Proc. Acad. Nat. Sc. Philadelphia (2) I, VII. 1905, 



p. 468. 

 Cryptopterus limpok Popta, Notes Ley den Mus. XXVII. 1906, p. 24. 



B. II 12; D. 2; A. 7788; P. I. 1214; V. 7. 

 Elongate, dorsal profile very convex, sloping down with a 

 concavity to the flattened head and snout. Height 4 3 / 4 5 l / a , 



