300 



brown, ventral surface white, as also the upperlip; maxillary 

 barbels bluish black, mandibulary barbels superiorly of same 

 colour, inferiorly white as also the mental ones. Fins reddish, their 

 border blackish, especially that of the caudal. Lenght 270 mm. 



Habitat: South New Guinea (Lorentz river!). North and 

 North East Australia. 



In rivers and estuaries. 



1 8. Arius danielsi T. Regan. 



Arius (Hemiarius) Danielsi Tate Regan, Ann. Mag. Nat. Hist. (8), I. 1908, p. 154. 

 Arms Danielsi Max Weber, Nova Guinea IX, livr. 4. 1913, p. 542. 



B. 6; D. I. 7; A. 2326; P. I. 9; V. 6. 



Elongate; height 4 3 / 4 to nearly 5 1 /,., head 3V 5 3 ! /2 its 

 width i ! / 3 i*/ 2 in its length. Dorsal profile sloping down from 

 dorsal nearly in a straight line to the 

 flat, rounded snout which projects so far 

 before the lower jaw, that the maxillary 

 teeth remain uncovered. Lips thin, forming 

 a fold at the corner of the rounded mouth, 

 which goes nearly twice in the head. Eye 

 5 2 /s 8'/ 2 > 2 3 in snout, situated laterally 

 behind and partly above the fold of the 



Fig. 124. Arius danielsi Regan. X % 



corner of the mouth, more than 4 times in the convexity of the 

 interorbital space. Free orbital margin wanting above. Posterior 

 surface of head granulated, occipital process with median keel, 

 i ! /i times as long as broad, extending to the crescentic basal 



