230 



BLACK SAW-BELLIED SALMON. 



bag is stated to be single and oval. The colour of 

 the drawings is deep bluish black, paler on the lower 

 half of the fish, and there, as well as on the oper- 

 cula, appearing to have a golden or bronze tint, as 

 represented in the two allied species of Spix, S. au- 

 reus and nigricans. All the fins are of a very deep 

 shade of the same colour; the iris is coloured of a 

 rich lake. The wood-cut beneath represents the 

 size and form of the teeth in the specimens men- 

 tioned. 



