On new Characinid Fishes. 



2(Jl 



XXXI. — Descriptions of Two new Characinid Fishes from 

 Argentina. By C Tate Reg AN, B.A. 



Dr. L. Reh, of tlio llanibnrn; Natural History Museum, 

 recently ^ent a few specimens to Mr. BouIen<^er for deter- 

 mination, describiiiji; them as aquarium fi.slies from Argentina. 

 These have been handed over to me and referred to three 

 species, viz. Tetragonopterus cordovensis, Gtlir., and two other 

 Characinids, each the type of a new genus and species, which 

 are described below. 



POGOXOCHARAX, gen. nov. 



Closely allied to Pyrrhulina, G. & V., differing in the 

 toothless mouth, the presence of two barbels on each side, 

 re-^pectively attached to the distal ends of the prasinaxillary 

 and maxillary, and in the more posterior position of tlie dorsal 

 fin, which is opposite the anal. 



Pogonocharax liehi^ sp. n. 



Depth of body equal to length of head, 4^ in the length of 

 the fish. Snout shorter than eye, the diameter of which is 

 34- ill the length of head and less than the interorbital width. 

 ]\luuth small, toothless ; lower jaw flat, shovel-shaped (as in 

 Pyrrhulina Jihunentosa) ', prajmaxillary barbel about as long- 

 as the eye ; maxillary entirely in front of the eye, bearing a 

 barbel which is ? as long as the fish. Scales rather large. 



fr^^yWvyJ^ 



Pogonocharax RrJii. 



cycloid, apparently about 25 in a longitudinal series ; no 

 lateral line. Dorsal 8, rather elevated anteriorly. Anal 8; 

 origin below that of the dorsal ; lin larger than the dorsal 

 and with the posterior rays much branched. Pectoral long, 



