Notes or) some South American Fishes. 627 



40 teeth on each side, the anterior 8 not larger than those of the upper jaw, 

 the rest somewhat larger). Gill-rakers slender and short 10 -f- 12 (14 -f- 16). 

 Scales largely deciduous (persistent). Dorsal inserted slightly in front of 

 anal, its origin equidistant from base of middle caudal rays and from anterior 

 angle of gill opening (inserted directly over first anal ray). Pectorals reach- 

 ing veutrals. A distinct broad silvery lateral band. 



Two specimens from Braret may be referred to this species, 

 although the smaller one differs considerably from the larger. 

 They measure 135 mm. and 105 mm. In the description the state- 

 ments in parentheses refer to the smaller specimen. 



These specimens differ considerably from the one described by 

 Dr. Giinther. Most of the differences can, however, be explained 

 by the difference in size of the specimens examined. 



Pterengiaulis atberinoides (L.). 



Origin of dorsal behind origin of anal. Maxillary reaching to angle of* 

 lower jaw. Teeth in the jaws minute. D. II, 10^; A. II, 30^. Depth 4; 

 head 4| ; scales 40. Gill-rakers 7 + 14, the longest f of eye. 



Elongate, compressed, the lower profile arched like the upper, the ventral 

 surface trenchant. Snout upturned, not greatly projecting beyond the lower 

 jaw. Eye 5^ in head. Scales deciduous. Origin of dorsal equidistant from 

 base of middle caudal rays and from origin of pectoral. Origin of anal equi- 

 distant from base of caudal and from angle of mouth. Pectorals large. A 

 broad silvery lateral band, narrowed on the tail. 



One specimen, 230 mm. Loc. ? 



Felloua altamazonica Cope. 



D. II, 15^; A. Ill, 35^. Scales 75. Depth 4; head 4. Dorsal behind the 

 veutrals, last ray over orgin of anal. Origin of dorsal equidistant from tips 

 of snout and from base of upper caudal rays. Eye little less than snout, 

 nearly 5 in head. Ventral fins longer than eye. Silvery, with golden reflec- 

 tions. A dark blotch on shoulder above. 



One specimen, 270 mm. Tocantins. 



This species may prove identical with the F. flavipinnis Yal. 



Ciupea Janeiro nom. nov. 



Clupea hrasiliensis Steind,, Ichthyol. Beitr., VIII, 64 (Rio Janeiro), not of Bloch 

 & Schneider, which is Albula vulpes L. 



A single specimen, agrees in all respects with Dr. Steindachner's 

 description quoted above. 



Cyprinodon amazona sp. nov. 



D. 9 or 10 ; A. 12. Scales 21 in the male, 24 or 25 in the females. Depth 

 4 — 5 ; head 3|- — 4. Eye large, longer than snout, 3 in head. Dorsal but 



