206 



ceases shortly before the caudal, which is deeply incised ; its 

 lobes pointed, the upper one the longer. Ventrals very short, 

 below dorsal. Pectorals about as long as the head, the osseous 

 part of their spine as long as head without snout. Two patches 



of rather strong teeth on the 

 vomer, arranged in two rows, 



which are connected in the middle 

 b y a single row. Rather strong 

 pointed teeth, directed backwards 

 F * S ' L **' in several rows in the jaws. 12 



Silurodes hypophthalmus (Blkr.) ^.,11 



Teeth of upper jaw and palate X 2 V 4 - lllrakerS ' the lon g est a llttle 



shorter than the branchial fila- 

 ments. Upper part olivaceous, lower parts lighter, belly and 

 underside of head white. A blackish spot behind the gill- 

 opening, which may be prolonged in a dark lateral band, 

 narrowing behind. A black spot at the end of the tail. Length 

 over 300 mm. 



Nomen in dig.: Limpok (Mai.), Lais (Lampong). 



Habitat: Java (Batavia, Kediri) ; Sumatra (Palembang, 

 Ringat!, Taluk!, Gunung Sahilan!, Djambi!, Lampong, Laut 

 Tador, Indragiri, Upper Langkat, Deli); Borneo (Mahakam- 

 river!, Sintang!, Danau Sriang). 



In fresh water. 



2. Silurodes borneensis (Steind.). 



Callichrous borneensis Steindachner, Abh. Senckenb. Naturf. Ges. XXV. 1901, p. 445. 



D. 4; A. 53; P. I. 10; V. 7. 



Height equal to head, about 5 1 /?. Eye nearly 6, situated 

 immediately behind the corner of the mouth. Lower jaw slightly 

 projecting. Maxillary barbels 2 times, the very weak mandi- 

 bulary barbels about 5 ! / 2 times in length. Height of dorsal 

 about i'/ 2 in head. Last ray of anal totally connected with 

 the caudal. Ventrals short, their longest lateral ray about 2 ] / 2 

 in head. Caudal as long as head, incised. Pectorals a little 

 shorter than head, their spine rather strong, dentated at the 

 hindborder, about 3 / 7 of length of head. Vomerine teeth in 

 an extremely narrow, linear, transverse band. Colour dark 

 brown. No dark spot before caudal. [Not seen by us]. Length 

 of single specimen known 84 mm. 



Habitat: Borneo (Baram-river, Serawak). 



