254 



with the outer rays the longer, which are equal to postor- 

 bital part of head. Pectorals as long as head without snout, 

 their spine slightly shorter, very strong, flattened, with the 

 hindborder denticulated. A mucous porus in their axil. Teeth 

 in the upper jaw in two nearly quadratic patches, in the 

 lower jaw in two pearshaped patches with the point directed 

 outwards and hindwards. Vomerine teeth in two very small, 

 distant patches. Margaritaceous, above and anterior part of 

 body blackish. Underside of head and belly white. Fins 

 reddish, hindborder of dorsal and caudal dark. A whitish spot 

 on the top of the head. Length 340 mm. 



Nomen in dig. : Patin muntjung (Djambi). 



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



In rivers. 



4. Pangasius Cuvier et Valenciennes. 



(CUVIER & VALENCIENNES. Hist. Nat. Poissons, XV. 1840, p. 45). 



(Pseudopangasius Bleeker, Neopangasius Popta). 



Elongate, compressed. Profile behind dorsal nearly straight, 

 before dorsal sloping down in a straight line to the more or 

 less prominent snout, which is generally rounded or bluntly 

 pointed. Head covered by soft skin, by exception granulated 

 above. Mouth subterminal, horizontal or slightly ascending. 

 The wide anterior nostrils are situated at the top of the 

 snout, looking forward ; posterior nostrils with an anterior lip, 

 situated at a short distance behind the anterior ones. Eye 

 with a free orbital margin, behind corner of mouth, at least 

 partly below the horizontal through the corner of the mouth. 

 Four generally short barbels. The maxillary barbels originating 

 in a slit above or behind the corner of the mouth and which 

 is continued below the eye. Mandibulary barbels far behind 

 symphysis. Dorsal well developped, with 6 7 rays, with a 

 strong denticulated spine which is preceded by a broad but 

 very low rudimentary spine and has a filamentous prolon- 

 gation. Adipose fin small. Anal fin distant from caudal, elon- 

 gate, with 28 40 rays. Ventrals with 6 rays. Pectorals with 

 a strong denticulated spine. Caudal forked. Villiform teeth in 

 the upper jaw in a slightly, in the lower jaw in a strongly 

 curved band. Vomerine and palatine teeth in 4 patches, or 



