Freshwater Fishes from British Neio Guinea. 155 



broad. Maxillary barbel extending to the extremity of the 

 pectoral ; outer mandibulary barbels nearly as long. 

 Dorsal I 7 ; the spine strong, § the length of head, with an 

 anterior and a posterior series ot denticulations, which become 

 small and indistinct inferiorly. Pectoral spine strong, as 

 long as that of the dorsal, with a feeble outer and a strong 

 inner series of denticulations. Anal 23 (VI 17). Ventrals 

 extending a little beyond the origin of anal. Caudal forked, 

 the longest ray 3 times as long as the middle ones. Caudal 

 peduncle 1^ as long as deep. Purplish above, silvery below ; 

 fins yellowish. 



One specimen, 162 mm. in total length, from the Fly lliver, 

 presented to the British Museum by Major W. Cooke 

 Daniels. 



This species resembles the Sumatran A. stormi, Blkr., in 

 general appearance and in the dentition, but is distinguished 

 by the longer barbels, much longer anal, less elevated 

 dorsal, &c. 



Rhombatractus weheri. 



Depth of body 2|-3 in the length, length of head 32-4. 

 Snout as long or nearly as long as the eye, the diameter of 

 which is 2|-3,^ in the length of head, interorbital width 

 about 2\. Lower jaw shorter than the upper; maxillary 

 completely hidden by the pra3orbital, extending to or nearly 

 to the vertical from the anterior margin of eye. Scales 

 34-37/11. Dorsal V (VJ), I 12-14; origin of spinous 

 dorsal above first branched ray of anal, a little nearer to tip 

 of snout than to base of caudal ; first spine stout, as long as 

 the postorbital part of head, the others slender and longer ; 

 second dorsal separated from the first by 2 scales, preceded 

 by a stout spine which is nearly as long as the eye ; soft 

 rays gradually increasing in length posteriorly. Anal I 22. 

 Pectoral 5-^- the length of head ; ventrals A-3 the length of 

 head, extending a little beyond the origin of anal. Caudal 

 emarginate. Caudal peduncle as long as or a little longer 

 than deep. Olivaceous above, silvery below ; a blackish 

 band from the snout, through the upper part of the eye, to 

 the base of the caudal, becoming gradually broader poste- 

 riorly, covering 2^ series of scales on the caudal peduncle; a 

 blackish blotch on the lower part of the side above tlio anal 

 tin ; vertical fins dusky at the base. 



(Six specimens, G5-ll() mm. in total length, from Sogcri, 

 presented to the British JMuseuin by Captain Y. \i. Barton. 



