234 MYLETES. 



caudal, and anal fins are dark bluish green, the first 

 with the dark band across, which we have seen in 

 the two former fishes; the second dorsal nearly 

 equidistant between the first and the tail. The 

 tail is somewhat forked, but with the lower lobe 

 unequally elongated, and near the tip a dark band 

 borders on the edges. The pectoral and ventral 

 fins are small in proportion, and are greenish 

 brown. The iris is coloured orange red. Notes 

 state, that the " scales are small, elliptical, fringed, 

 and somewhat adhesive ; the teeth are a single 

 row in each jaw, large and serrated; opercula are 

 striated ; tongue is round and fleshy ; the intes- 

 tines have no appendices ; air-bladder double, — 

 the first oval, second long and pointed. Taken 

 in the Rio Branco in April, with the hook baited 

 with fish." 



D. 15_P. 10_V. 7— A. 31— C. 25_.Ribs, 11 pairs, large- 

 Vert. 33. 



MYLETES, Cuv. 



The fish which we place in the genus Myletus of 

 Cuvier is of a clumsy and unsymmetrical form ; and 

 our author, from examination of the teeth, seems to 

 nave considered it referrible to this. The Myletes 

 of Agassiz, in the Brazilian Fishes, comes closer 

 to Tetragonopterus in external shape, and can only 

 be separated by the form of the teeth. 



