222 



Micronema typus Bleeker, Ichth. Arch. Ind. Prodr. I. Siluri, 1858, p. 300. Atl. 



Ichth. II. 1862, p. 91. 



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

 Micronema phalacronotus Fowler, Proc. Acad. Nat. Sci. Philadelphia, (2) LVII. 



1905, p. 469. 



B. 1415; D. o; A. 8693; P. i. 12 14; V. 9. 



Elongate, dorsal profile slightly convex, sloping down to 

 the broad flattened head. Lower jaw prominent. Height 5 5 1 / 2 , 

 head about 5 2 / 3 , eye 3'/ 2 5> about equal to snout, situated 

 at some distance behind the corner of the mouth, its lower 

 half below the level of the cleft of the mouth, more than 

 twice in the convexity of the interorbital space. Maxillary 

 barbels extending to the hindborder of the eye, those of the 

 lower jaw much shorter than the eye. Anal free from caudal 

 or connected with it. Ventrals longer than eye, pectorals shorter 

 than head, osseous part of pectoral spine equal to snout and 

 eye. Caudal deeply incised. Teeth in the jaws in a rather 

 broad band; the rounded vomerine band occupies nearly the 

 whole width of the palate. Gillrakers 14. Yellowish, a black 

 spot in the middle of the base of the caudal. Finmembranes 

 blackish. Length over 325 mm. 



Nomen in dig. : Limpok (Mai. Batav.), Lais (Palembang). 



Habitat: Java (Batavia) ; Sumatra (Palembang!); Borneo 

 (rivers Kahajan, Kapuas, Sambas Limbang and Baram). Siam. 



In rivers. 



10. Cryptopterus hexapterus (Blkr.). 



Silurus hexaptertis Bleeker, Nat. Tijdschr. Ned. Indie II. 1851, p. 203. 

 Micronema hexapterus Bleeker, Ichth. Arch. Ind. Prodr. I Siluri, 1858^.301. 



Atl. Ichth. II. 1862, p. 91. 

 Cryptopterus hexapterus Gunther, Cat. Brit. Mus. V. 1864, p. 43. 



B. 1213; D. O; A. 7483; P. I. 1617; V - 8 - 

 Elongate, sloping down to the snout with a concavity in 

 the neck. Height 5 3 / 4 5 ! / 3 , head 6'/ 2 7V 5 , eye 5 6, situated 

 behind the corner of the mouth and partly below the cleft 

 of the mouth. Lower jaw strongly prominent. The maxillary 

 and mandibulary barbels are sometimes shorter, sometimes 

 rather longer than the head. Anal free from caudal or reaching 

 to it. Ventrals more than twice as small as pectorals, which 

 are rather longer than the head, the osseous part of their 



