The southern flank and main chain of the Andes afford rivers which traverse the great Llanos in a southern direction, and swell, by their junction with the Orinoco, the majestic body of that grand river; of these, the _Mamo_, _Pariagou_, _Pao_, _Chivita_, _Zoa_, _Cachimamo_, _Arauca_, _Capanaparo_, _Sinaruco_, the _Apura_ and the _Meta_, are the principal; and the _Parima_, _Siaba_, _Joa Parana_ and the _Cassiquiari_, fall into this river on its southern bank, the latter forming a communication with the still more majestic stream of the Maranon. The ORINOCO, or ORONOCO, is not only amongst the largest, but the finest of South American rivers, and is chiefly distinguished by its very singular and intricate course. Its sources are not well known, but according to La Cruz, it rises in a small lake called Ipava, in 5° 5' north-latitude, and thence winding upon itself, enters the lake of Parima to the south-east, and issues by two outlets towards the north and south; on the western shores of the lake; receiving the Guaviara, it bends north, then north-east, and embracing the Meta, the Apura, the Arauca, and the other large streams above-mentioned, with thousands of smaller ones, falls into the Atlantic ocean, by numerous estuaries, opposite the island of Trinidad, its chief mouth being considerably to the south-east of that island. This noble river communicates with the Maranon, and it is supposed, that a stream called the Siaba flows from the south-west of the lake Parima into the Negro, and that to the south-east of the same lake, the Rio Blanco, or Parima, joins the Rio Negro also, this last communicating with the Maranon by means of the Joa Parana.