221 
8. Cryptopterus apogon (Blkr.). [Fig. 87. p. 215]. 
Silurus apogon Bleeker, Nat. Tijdschr. Ned, Indié II. 1851, p. 67. 
Silurus leptonema Bleeker, Nat. Tijdschr. Ned. Indié III. 1852, p. 584. 
Silurus micropogon Bleeker, Nat. Tijdschr. Ned. Indié IX. 1855, p. 419. 
Phalacronotus leptonema Bleeker, Ichth. Arch. Ind. Prodr. Siluri, I. 1858, p. 304. 
AtlS Tehth=, Ul 91S62- sp.1 92. 
Phalacronotus 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 micronema Vaillant, Notes Leyden Mus. XXIV. 1902, p. 48. (not 
of Bleeker). 
B. 14—17; D. 0; A. 78—o1; P. 1. 1415; 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?/,—7, head 43/,—5!],. 
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, 1'/,—2'/, in the convexity of the flattened 
interorbital space (4°/, 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. 
Nomen indig.: Lais tima (Danau Sriang). 
Habitat: Sumatra (Palembang, river Batang Hari, Djambi!); 
Borneo (Banjermassin!, Kutei!, Pontianak Sintang!, Danau 
Sriang, S¢rawak). 
In fresh water. 
g. Cryptopterus micronema (Blkr.). 
Silurus micronemus Bleeker, Nat. & Geneesk. Arch. Ned. Ind. III (2). 1846, 
p- 289. Verh. Bat. Gen. XXI. I. 1847, Silur. batav. consp. diagn. p. 56. 
Silurus phalacronotus Bleeker, Nat. Tijdschr. Ned. Indié, lI. 1851, p. 429. 
Phalacronotus micruropterus Bleeker, Ichth. Arch. Ind. Prodr. I. Siluri, 1858, p. 307. 
Micronema phalacronotus Bleecker, Enum. spec. pisc. Arch. Ind. 1859, p. 139. 
