518 



chain of Pacaraina the Rio Rupunuri rises near 

 the Cerro Uassari. On the right bank of the 

 Rio Branco, in a still more southern latitude 

 (between 1 Q and 2° north) is a mountainous 

 territory in which the Caritamini, the Padaviri, 

 the Cababuri (Cavaburis) and the Pacimoni 

 take their source, from east to west. This west- 

 ern branch of the mountains of Pacaraina sepa- 

 rates the basin of Rio Branco from that of the 

 Upper Oroonoko, of which the sources are pro- 

 bably not found on the east of the meridian of 

 66° 15': it is linked with the mountains of Un- 

 turan and Yumariquin, lying S.E. of the mis- 

 sion of Esmeralda # . From the whole of these 



punuri. The Isle Ip-Amucena, which Santos places in the 

 middle of the Laguna Parime, recalls the name of lake 

 Amuca (Amueena, Amacu), of which the existence, already 

 announced by the surgeon Hortsmann de Hildesheim, has 

 been certified by the most recent travels. (Vol. v, p. 791,, 

 799.) 



* The Indians who inhabit the banks of the Rio Branco, 

 told M. Pontes that the Rio Mocajahi or Cahuana, which flows 

 into the Rio Branco, at 2° 26' pf latitude, and which the Por- 

 tugueze soldiers ascended in canoes during twenty days, over 

 innumerable rapids and cataracts, communicates with the 

 Cfababury, which is at once a tributary stream of the Rio Negro 

 and the Cassiquiare, (See above, Vol. v, p. 377, 418.) If 

 this notion be correct, our maps prolong the course of the Pa- 

 daviri much too far towards the north. It furnishes, according 

 to the author of the Corographia brasiliensis (Vol. ii, p. 349), 

 a portage to the Umavaca (no doubt the Macava, a tributary 

 stream of the Upper Oroonoko). I am surprised at the detail 



