221 



8. Cryptopterus apogon (Blkr.). [Fig. 87. p. 215]. 



Sifarus apogon Bleeker, Nat. Tijdschr. Ned. Indie II. 1851, p. 67. 

 Silnrus leptonema Bleeker, Nat. Tijdschr. Ned. Indie III. 1852, p. 584. 

 Silnnes micropogon Bleeker, Nat. Tijdschr. Ned. Indie IX. 1855, p. 419. 

 Phalacronotus leptonema Bleeker, Ichth. Arch. Ind. Prodr. Siluri, I. 1858, p. 304. 



Atl. Ichth. II. 1862, p. 92. 

 Phalacronottis micropogon Bleeker, Ichth. Arch. Ind. Prodr. Siluri, I. 1858 



p. 306, Atl. Ichth. II. 1862, p. 92. 



Cryptopterus micropogon Giinther, Cat. Brit. Mus. V. 1864, p. 43. 

 ? Cryptopterus inicronema Vaillant, Notes Leyden Mus. XXIV. 1902, p. 48. (not 



of Bleeker). 



B. 14 17; D. o; A. 78 91; P. i. 14 15; V. 9 10. 



Elongate. Dorsal profile more or less convex and accor- 

 dingly sloping down to the snout with a more or less pro- 

 nounced concavity at the nape. Height 5 2 / 3 7, head 4 3 / 5 5*/ 3 . 

 Eye 4 6 (9 in a specimen of 770 mm. length), behind corner 

 of the large mouth, its lower half below the level of the cleft 

 of the mouth, I '/ 2 2 ! / 2 in the convexity of the flattened 

 interorbital space (4 3 / 5 in a specimen of 770 mm. length). 

 Maxillary barbels reaching to the eyes or even to their hind- 

 border, mandibulary barbels very delicate, may be more than 

 half diameter of eye. Anal free from caudal. Ventrals nearly 

 twice the length of the pectorals, which are much shorter 

 than the head, their spine nearly equal to head without snout. 

 Teeth in the jaws rather sharp and curved, in a broad cres- 

 centic band, those of the vomer in an angular band. Colour 

 brownish or yellowish, darker on the back, fins may be 

 powdered with black. Length 770 mm. 



No men in dig. : Lais tima (Danau Sriang). 



Habitat: Sumatra (Palembang, river Batang Hari, Djambi !); 

 Borneo (Banjermassin !, Kutei!, Pontianak Sintang!, Danau 

 Sriang, Serawak). 



In fresh water. 



9. Cryptopterus micronema (Blkr.). 



Si far us micron-emus Bleeker, Nat. & Geneesk. Arch. Ned. Ind. Ill (2). 1846, 



p. 289. Verh. Bat. Gen. XXI. I. 1847, Silur. batav. consp. diagn. p. 56. 

 Si/urns phalacronotus Bleeker, Nat. Tijdschr. Ned. Indie, II. 1851, p. 429. 

 Phalacronotus micruropterus Bleeker, Ichth. Arch. Ind. Prodr. I. Siluri, 1858, p. 307. 

 Micronema phalacronotus Bleeker, Enum. spec. pise. Arch. Ind. 1859, p. 139. 



