326 



breadth 4 / 5 of its length. Dorsal profile with a slight convexity 

 sloping down to the broad, slightly prominent, rounded snout. 

 Mouth slightly rounded, more than twice in head, when closed 

 only the posterior part of the maxillary band of teeth is 

 covered. Nostrils above a line, connecting the middle of the 

 eye and the point of the snout. Head covered by skin, its 

 posterior part granulated. Occipital process keeled, somewhat 

 longer than the breadth of its base, its lateral borders nearly 

 parallel, its hindborder touching the basal bone of the dorsal 

 spine. Median fontanel shallow, rhombic, situated between 

 posterior nostrils and occipital process. Humeral process rather 

 long and pointed. Eyes about 7, nearly lateral, with a free 

 orbital margin situated in the anterior half of the head, 

 2 1 / 4 -2 1 / 2 in the snout, 4 1 / 4 ~4 1 / 2 in the slightly convex interor- 

 bital space. Maxillary barbels extending to base of pectorals 

 or somewhat farther, mandibular barbels to base of pectorals, 

 mental ones conspicuously shorter. Dorsal originates midway 

 between pectorals and ventrals; nearly equal to head from 

 posterior nostril; osseous part of dorsal spine equal to head 

 without snout, flattened, the fine granules of its frontborder 

 are distally coarser, hindborder serrated. Base of adipose fin as 

 long as dorsal, its distance from lastnamed fin about 2 ! / 2 times 

 its length. Anal emarginate, its height about equal to postor- 

 bital part of head, ventrals of about the same length, reaching 

 anal or nearly so. Pectorals I eyediameter longer than head 

 without snout, their spine in length and otherwise equal to 

 dorsal spine. Caudal deeply forked, its lobes pointed, more 

 than thrice in the longest median rays. Least height of caudal 

 peduncle i ] / 2 times its length. Crescentic maxillary band of 

 villiform teeth 6 times broader than long, the band of the 

 lower jaw nearly similar but laterally pointed. About 12 short, 

 stiff gillrakers, broadened at their base, the most lateral ones 

 very short. Dorsal surface and sides of a lighter or darker steel 

 colour, gradually passing into the yellow white of the lower 

 surface. Fins dark, margin of anal and pectorals and innerside 

 of ventrals lighter. Length abouth 350 mm. 



Nomen indig. : Kantjur (Senta'ni). 



Habitat: North New Guinea (Lake Sentani !, river Tamil, 

 and its tributaries !, river Tawarin !). 



In fresh water. 



