NORTHWESTERN SOUTH AMERICA. 681 



8. Chaetostomus leucomelas spec. nov. 



13652 I.; 7340 C, three, 1 16-143 mm., the largest the type. Rio 

 Patia, halfway between the Rios Magui and Telembi. April 

 5 and 6, 1913. Henn. 



Head 3.33-3.5 ; depth 6-6.5 ; D- I, 8 in two, I, 9 in one ; A. I, 5 ; 

 scutes 24-25 ; eye 2.5 in the interorbital, which is 3 in the head ; 

 depth of the head 2 in its length, its width about .8 of its length ; 

 interopercle with 3-5 strong, recurved, graduate spines ; dorsal spine 

 about .8 as long as head, base of dorsal equal to its distance from the 

 middle of the adipose spine ; caudal deeply emarginate, the lower 

 lobe longest ; depth of caudal peduncle 3 in its length. 



Back and sides light olive, faintly mottled. All fins but the anal 

 with light bands across the rays, the membranes hyaline, margin of 

 caudal light. The contrast between light and dark bars strongest 

 on dorsal and caudal. No spot on the second membrane of the 

 dorsal in one of the specimens ; a spot on the base of the second 

 membrane of the dorsal in two of the specimens. 



MUGILID-^. 



9. Joturus daguae spec. nov. 



7458 C, type, 195 mm.; 7459 C. ; 13846 I., paratypes, five, 167-225 

 mm. Rio Dagua at Caldas, Colombia. Eigenmann. 

 Head 4.1 ; depth 3.5 ; D. IV-I, 8; A. HI, 9; scales 44-46, 13 or 

 14 between dorsal and anal ; eye 5 in the head ; interorbital 2.5 ; 

 snout 3.25-4 ; snout conical, the maxillary reaching to the anterior 

 margin of the eye ; teeth of the upper jaw mostly bicuspid, more 

 rarely tricuspid or unicuspid, a series of larger pointed teeth from 

 an anterior row in some specimens ; teeth in the lower jaw mostly 

 unicuspid, a few bicuspid ; snout conical, length of the mouth about 

 1.5 in its width; scales decreasing in size forward on the head but 

 w^ithout supplemental scales ; no accessory scales on the body ; pre- 

 orbital serrate on its posterior edge and on the posterior part of the 

 lower edge; upper lip very broad in front, forming the tip of the 

 snout; spinous dorsal naked, a few scales on the base of the mem- 

 branes of the soft dorsal, caudal and anterior part of the anal; gill- 



