﻿ICHTHYOLOGICAL RECONNAISSANCE OF COLOMBIA 



15 



Three hnndred, largest 67 mm. Apiilo. CM. No. 5071 ; I.U.M. 

 No. 12826. 



Two, 39 and 43 mm. Puerto Berrio. CM. No. 5075. 



Eighty-iiiiie, largest 5S mm. Pefias Blaiieas. CM. No. 5005 ; 

 I.U.M. No. 12821. 



Three, largest 50 mm. Honda. CM. No. 5067. 



Head 4.75-5 ; depth 3-3.6 ; A. 39-45 ; scales 5-40 to 43-4. 



Fifteen. Caiica at Cali. C M. No. 5089; I.U.M. No. 12824. 



Head 5 ; depth 3.75-4 ; A. 40-45 ; scales 5-41 or 42-4. 



T^venty, largest 55 mm. Cartago. CM. No. 5068; I.U.M. No. 

 12823. 



Fifty-three, largest 55 mm. Piedra Moler. CM. No. 5070; 

 I.U.M. No. 12825. 



Head 4.75-4.9 ; depth 4 ; anal usually 35-37 ; scales ? 

 Head 4.75-5.33 ; depth 3-4 ; D. 10 ; A. 40-43 in the Magdalena between 

 Penas Blancas and Giradot; 34-43 ((usually 35-37) Piedra Moler and 

 Cartago*; 40-45 in the Cauca at Cali; scales 5-40 to 43-4; eye 2.33-3 in the 

 head, equal to or a little greater than the interorbital. 



Maxillary not reaching the suture between the second and third sub- 

 orbitals. No interpolated rows of scales below the lateral line. Origin 

 of anal under first to middle dorsal rays, equidistant from tip of snout 

 and base 'of middle caudal rays, in Girardot and Cali specimens, nearer 

 caudal in Cartago and Piedra Moler specimens ; base of anal 2.4-2.6 in the 

 length. 



Lateral band sharply defined both above and below. Caudal bordered 

 more or less distinctly with dark. A row of chromatophores along the 

 base of the anal rays, a few chromatophores half way between front of 

 anal and lateral line. All of these sometimes very faint, strongest in 

 specimens from Cartago and Piedra Moler wliere some chromatophores are 

 arranged in sei'ies along the interhsemals as in conventus. 



The specimens from Cartago and Piedra Moler have in addition a 

 small circular black spot on the base of the caudal which with their short 

 anal may entitle them to a distinctive name. All of them have lost' 

 their scales. 



7. Bryconamericus ortholepis >p. nuv. 



Tyi)e. 48 nun. Boca de Raspadura. CM. No. 5088. 



Plead 3.66; depth 3; D. 11; A. 33; scales 6-38-5; eye .6 in snout, 2.6 

 in head ; interorbitsil 2.9 in head. Depth of caudal peduncle equal to its 

 length, equal to the length of the eye. 



. Similar to scoplferus ; preventral area rounded, with a regular series 

 of 13 scales; the short postventral area trenchant; predorsal area rounded, 

 with 7 regular median scales from the dorsal forward and then three 

 larger, unsymmetrical scales; occipital process nearly equilateral, about one- 

 sixth of the distance from its base to the dorsal, bordered by three scales 

 on each side ; interorbital very slightly convex ; snout but little decurved 

 forward; mouth terminal, the maxillary-premaxillary border angulated, as 



4. In Cartago sp3cimens on 3 has 33 anal rays, one has 34, five have 35, six have 36, three have 

 37, one has 38 and one 43, 



