﻿ICHTIIYOLOGICAI. RECONNAISSANCE OF COLOiLBIA 



19 



long ;is the bead; origin of anal below posterior part of dorsal; origin of 

 dorsal over tip of ventrals, or sometimes middle of ventral in adult, a 

 little furtber forward in young wben it is equidistant from tip of caudal 

 and operele; caudal rounded. Maxillary barbel reacbing just beyond base' 

 of pectoral, nasal barbel to near base or tip of opercular spines. 



Smallest witb a black lateral band, a series of spots developing, witb 

 growtb, above and below it, tbe band itself breaking up into spots in 

 specimens over sixtj' millimeters long. Oldest quite dark, witb faint spots 

 and mottlings. 



Type. 106 mm., Boquia. CM. No. 4817. 



Paratypes, tbirty-tbree specimens. Boquia, CM. No. 4818 a-i ; I.U.M. 

 No. 12678 a-j. 



19. Pygidium banneaui sp. nov. 



Head 5.33-5.5 ; deptb 5.5-7 ; D. 10 ; A. 7 ; eye 2-2.5 in snout, 5.5 in bead, 

 2 in interorbital ; widtb of bead nearly equal to its lengtb ; upper pectoral 

 ray prolonged in a filament, as long as bead; origin of anal sligbtly in 

 advance of end of dorsal ; dorsal entirely posterior to ventrals, tbe first 

 ray nearer tip of caudal tban tip of snout by tbe entire lengtb of tbe 

 head or less ; caudal emarginate ; maxillary barbel reacbing to near middle 

 of pectoral, nasal to end of operele. 



Smallest witb a black line from snout to middle of caudal, wbicb 

 in larger ones breaks up into spots, witb additional spots appearing on 

 back ; in largest examples tbe sides and back are profusely spotted, tbe 

 spots varying in size in different individuals. 



Type, 44 mm., Bernal C'eek. near Honda, CM. No. 4815. 



Paratypes, eigbty-eigbt specimens from same place, CM. No. 4816 a-z: 

 I.U.M. No. 12677 a-z. 



Tbis species was very abundant in tbe fine gravel and under small 

 stones. 



For Mr. Henri Banneau, of Paris, France. 



20. Curimatus atratoensis sp. nov. 



Head 4.33 ; deptb 3 ; D. 11 ; A. 9 ; scales 5.5-38-5 ; eye 1 in snout, 3.4 

 in bead, 1.4 in interorbital. 



Readily distinguished by tbe coloration. A conspicuous black band 

 from snout through eye and opercles, along lateral line to end of middle 

 caudal rays, bordered with light color above and below. Back dark, with 

 dark zigzag lines between the rows of scales ; two or three similar lines 

 below lateral band, the second the most prominent, otherwise silvery below 

 lateral band. A dorsal spot obliquely extending from front margin of the 

 fin to its base at the fifth to seventh rays. 



Type. 105 mm., Quibdo, CM. No. 4814 a. 



Paratypes, many specimens, Quibdo. CM. No. 4833 a-j ; I.U.M. No. 

 12676 a-k. 



