400 Annals of the Carnegie Museum. 



57190-^, C. M., 50-119 mm., Iporanga, tributaries of Rio Riberao, 



Nov. 30 and Dec. i, 1908. Haseman. 

 572oa-c, C. M., 80-82 mm., Raiz da Serra, Rio Mogy, Jul}' 28, 1908. 



Haseman. 



Genus Heptapterus Bleeker. 



There are three, possibly four species of this genus found in small 

 streams between Santos and Buenos Aires. Three of the species are 

 well marked, the fourth is doubtful. 



5. Heptapterus multiradiatus von Ihering. 



57160-7, C. M., 35-101 mm., Mogy das Cruzes, Rio Tiete, July 20, 



21, 1908. Haseman. 

 5717C-&, C. M., 44-102 mm., Alto da Serra, Tiete basin, Sao Paulo, 



Aug. 4, 1908. Haseman. 



This species was described from specimens from Alto da Serra. It 

 is distinguished by three dark longitudinal bands, the middle one along 

 the middle of the sides, and by the extreme length of the anal which is 



38 39 40 43 44 45 



I ' I ' 3 ' I ' I ' I in the specimens examined. 

 The maxillary barbels extend to the middle of the pectoral, or are a 

 little shorter. 



6. Heptapterus stewarti Haseman. 



This species is represented only by the type in the collections of the 

 Carnegie Museum; No. 2850, C. M. It is distinguished by the almost 

 uniform color and medium number (30) of anal rays. 



ft 



7. Heptapterus mustelinus Valenciennes. 



The length of the barbel of this species varies with age. In small 

 specimens they may extend beyond the middle of the pectoral, in 

 larger ones not to the gill opening. Valenciennes figures this species 

 as having distinct cross-shades at the nape and at the dorsal. Such 

 cross-shades are also found in a number of the specimens enumerated. 



57l3a-c, C. M., 87-159 mm., Santa Maria, Rio Vaccacahy-mirim, 



secondary tributary of the Rio Jacuhy which empties into the Lago 



das Patos at Rio Grande do Sul. Haseman. 

 57140-7, C. M., 19-49 mm., Porto Alcgre, Rio Grande do Sul, Jan. 19, 



1909. Haseman. 

 57150-^, C. M., 46-55 mm., Rio Negro at Santa Isabel, Uruguay, 



Feb. 12, 1909. Haseman. 



