242 



dorsal slightly convex. Eye 6 7, 2 ! / 2 in snout, 2 1 / 2 to nearly 

 3 times in the slightly convex interorbital space. Lips rather 

 thin, papillated, prominent at corner of mouth. Nasal barbels 

 extending to the base of first dorsal when young, in adults 

 not so far. Maxillary barbels reach middle of pectorals, the 

 mandibulary and mental barbels not so far l ). First dorsal about 

 as long as head without snout, its spine equalling about the 

 postorbital part of head, with a serrature at the frontborder. 

 Origin of dorsal midway between origin of ventrals and 

 pectorals. Pad of fat of the caudodorsal begins a little behind 

 the middle of the anal fin, from it emerge a little farther 

 behind distinct rays, increasing gradually in size. Anal a little 

 higher than half length of head. Ventrals rounded, as long as 

 postorbital part of head, extending on anal. Pectorals 1 J 5 

 shorter than head, extending to the ventrals or not so far, 

 their spine nearly as long as that of the dorsal, serrated behind. 

 Maxillary teeth in a nearly continuous band of 4 5 rows. 

 Mandibulary teeth in two triangular patches. Vomerine ones 

 in a semilunar patch of about 4 rows in the middle. Teeth 

 white, more or less light brown tipped. First branchial arch 

 with a well developed entire membrane. Gillrakers 11 13, as 

 long as branchial filaments, more than 2 / 3 of eye. Colour 

 uniform brown or black. Length 200 mm. 



Habitat: South New Guinea (Lorentz-river!); Aru-islands!. 

 Australia (Cape York). 



Fresh water. 



6. Copidoglanis bartoni (Regan). 



Neosilurus bartoni Tate Regan, Ann. Mag. Nat. Hist. ser. 8, vol. I, 1908, p. 153. 



Depth of body 6 l j 2 in the length, length of head 5%. 

 Head much broader than deep, its breadth i 1 ^ in its length, 

 diameter of eye 4 2 / 3 , length of snout 2 3 / 4 3, interorbital width 

 2 4 / 5 3'/ 5 . Lower jaw shorter than the upper. The barbels are 

 as long as or a little shorter than the head; when laid back 

 the nasals just reach the edge of the occiput, the maxillaries 

 a little beyond the edge of the operculum, the outer mandi- 



i) In Steindachners specimens and in some of those which we have seen from 

 the Lorentz-river (from Sabang), the maxillary and mandibulary barbels reach 

 beyond the extremity of the pectorals. 



