517 



We there distinguish, from west to east, the 

 mountains of Pacaraina, Tipique, Tauyana, 

 where rises the Rio Parime (a tributary stream of 

 the Uraricuera), Tubachi, Cristaux (lat. 3° 56', 

 long. 62° 52'), and Canopiri. The Spanish tra- 

 veller, Rodriguez, marks the eastern part of the 

 chain by the name of Quimiropaca ; but as the 

 geognostic description of a country cannot make 

 any progress without adopting general names, 

 I continue to give the name of Pacaraina to the 

 whole of this Cordillera, which links the moun- 

 tains of the Oroonoko, to those of the interior 

 of the Dutch and French Guyanas, and which 

 Ralegh and Keymis had made known in 

 Europe at the end of the 16th century. This 

 chain is broken by the Rupunuri and the Esse- 

 quibo, so that one of their tributary streams, 

 the Tavaricuru, takes its rise on the southern 

 declivity, and the other, the Sibarona, on the 

 northern. In approaching the Essequibo, the 

 mountains are more developed towards the 

 south-east, and extend beyond the 2i° of north 

 latitude. From this eastern branch * of the 



* The culminant points of this eastern branch, are from 

 S.E. to N.W. j the Sierras of Cumucumu, Xirivi, Yaviarna, 

 Paranambo, Uanarari,, and Puipe. I believe that the groupe 

 of the mountains of Cumucumu (Cum-Ucuamu) in the map of 

 Pontes, taken on the spot., is the Cerro. del Dorado or Cerro 

 Ucucuamu of the journal of Santos, and the Acucuamo of 

 Caulin {Corografica, p. 176) between the Mahu and the Ru- 



