42 Annals of the Carnegie Museum. 



Back chocolate, the median line darkest ; three black lateral stripes, 

 a median golden stripe and a golden stripe shading to silvery ventrad ; 

 belly white. A crimson spot on middle of the dorsal and of the 

 ventral fins; a crimson streak bordering the upper margin of the 

 middle black band from above middle of the pectoral to middle of the 

 dorsal ; caudal suffused with orange ; anal posteriorly orange-red ; iris 

 red above. 



The upper two black bands converge on the caudal fin, the middle 

 one extends from end of snout and mandible to base of the lower 

 caudal lobe ; the lowest extends from near the mcuth along the sub- 

 orbital, below the pectoral to the anal, and is continued upon the an- 

 terior rays of the anal and sometimes margins the rest of the fin. An- 

 terior dorsal ray, or rays, dark. 



Nannostomus minimus sp. nov. 



Type, 21 mm. (No. 1165 Carnegie Museum Catalog of Fishes.) 

 Erukin. 



Cotypes, 2 specimens, 20 and 21 mm. Erukin. (I. U. Cat. No. 

 11691.) 



Cotype, 1 specimen, 22 mm. Amatuk. (C. M. Cat. No. 1166, a.) 



Head 3.6 ; depth 4.66 ; D. 9 ; A. 10 ; scales 7 in front of dorsal, 

 5 between dorsal and ventrals, 21 in a lateral series. Eye greater than 

 snout, 3 in the head ; interorbital equal to the eye. 



Origin of dorsal over origin of ventrals ; pectorals reaching half 

 way to middle of ventrals ; ventrals to anal ; origin of anal on a ver- 

 tical from middle of last dorsal ray. No adipose fin. 



Back uniform gray, median darker line wanting ; a light band from 

 end of snout to upper part of middle of caudal ; a black band from 

 end of mandible to lower part of middle of caudal, darkest above pec- 

 torals and above middle of ventrals ; a few chromatophores along base 

 and in front of the anal fin ; fins mostly hyaline, their chromatophores 



few. 



Nannostomus simplex sp. nov. 



Type, 25 mm. (No. 1167 Carnegie Museum Catalog of Fishes.) 

 Lama Stop-Off. 



Cotype, 29 mm. Lama Stop-Off. (I. U. Cat. No. 11692. ) 



Closely allied to N. auratus and N. minimus. 



Head 3.5 ; depth 4.5 ; D. 10 ; A. 10 ; scales 5 between D. and V., 

 9 before D., 24 in a lateral series. Eye a little greater than snout, 3 

 in the head, equal to the interorbital. 



