﻿ICHTHYOLOGICAL RECOXXAISSAXCE OF C0L0:MBIA 



17 



Scales regularly imbricate, the rows not deflected toward the anal : 

 caudal naked; anal with a narrow sheath composed of one series of 

 scales. 



A silvery lateral band ; a conspicuous oval black spot on the caudal 

 peduncle, extending but little over the bases of the middle caudal rays. 

 Region along base of anal and basal part of the fin bright, brick-red. 



The specimens from Cisnero and Cordova (formaline) differ from the 

 above in having the depth 3-3.25. The pectorals are a little shorter than 

 in the types. CM. No. 502S : I.U.M. Xo. 12794. 



Breeding males with the head, fins and margin of scales profusely 

 covered with minute tubercles. 



Measurements of Seven Specimens from Istmina. 



D. 



A. 



Scales 



D^pth 



Eve 



11 



30 



6-38-5i 



2.66 



2.5* 



1] 



29 



6-39-5^ 



2.75 



2.5t 



11 



29 



6-39-5 



2.66 



2.5t 



11 



31 



7-39-6 



2.75 



2.4 



11 



29 



6-39-5 





2.4 



11 



30 



7-40-6 



2.5 



2.5 



11 



32 



7-39-6 ■ 



2.9 



2.66 



Measurements of Three Specimens from Cisnero. 



D. 



A. 



Scales 



Depth ■ 



Eye 



11 



30 



6-40-5 



3.25 



2.7* 



11 



31 



6-39-5 



3.2 



2.66 



11 



30 



7-42-5 



3 





Of eight others two have the anal 28. and six have it 30 ; two have 

 the lateral line 40 and six 39. 



9. Bryconamericus caucanus sp. nov. 

 Type, SO mm. Piedra Moler. CM. Xo. 5031 a. 



Paratypes. 130. largest SO mm. Piedra Moler. CM. Xo. 5031 b-z ; 

 I.U.M. Xo. 12795. 



Paratypes. 60, largest 84 mm. Paila. CM. X'o. 5032 a-j : I.U.M. 

 Xo. 12796. 



Paratypes, 4, largest 60 mm. Ciuca at Gali. CM. X'o. 5033 a-b; 

 I.U.M. X'o. 12797. 



ParatA-pes. 40. largest 66 mm. Cartago. CM. Xo. 5034 a-e : I.U.M. 

 No. 12798. 



Paratypes. 50. largest 72 mm. Call. CM. X'o. 5035 a-j ; I.U.M. X'o. 

 12799. 



Paratyi>es, 11, largest 58 mm. to base of caudal. Boquia. CM. Xo. 

 5030 a-f : I.U.M. Xo. 12800. 



Allied to B. peruanus. abundant in the upper Cauca. Reaching a 

 length of 84 mm. 



* Equals interorbital. 



t Slightly greater than interorbital. 



2—32505 



