80 FISHES OF WESTERN SOUTH AMERICA 
pampa bordering Lake Titicaca at the south; the river entering the Lake at Guaqui. 
Ruins.* 
Tiare, Rro: small, navigable river rising in Ecuador, entering the Peruvian 
Amazon from the northwest, near Nauta.* 
TrLarnioc: station on the Cerro de Pasco railway; a small stream tributary 
to the upper R. Mantaro.** * 
Trnco, Rio: a small river also called Hiaurros (Herndon) entering the 
Huallaga from the northwest; many channels and braided type of stream in dry 
season; a rocky torrent in the wet season; trail follows river up to village of Higueros 
and to Hudnuco Viejo.* 
TrinGo DE Pauca: junction of Rio Crisnejas (q.v.) with the upper Marafon, 
elevation about 3800 feet. (Pearson, 1937a.)*** 
Tinta: village of upper Urubamba or Vilcanota, below Sicuani, 11400 feet 
elevation (Cope, Orton.) 
Trrapata: village on Southern railway, Cuzco division, and on the Rio de 
Pucara.* 
Titicaca, LAK®: highest large lake and largest high lake of the world; area 
2050 square miles; depths down to 600 feet or more; maximum length 120 miles; 
maximum width 40 miles; elevation 12500 feet; traversed by Peruvian-Bolivian 
boundary; its northern body the larger, known as Lago Chucuito, nearly constricted 
off from the southern portion, Lago Uinamarca, at the straits of Tiquina. Navi- 
gated by the J/nca direct between railway termini at Puno, Peru, and Guaqui, 
Bolivia; two smaller coastwise trading steamers; another added recently.* 
Torontoy: village of upper Rio Urubamba, elevation 8000 feet.** 
Torora, Rro pr: enters Rio Huambo (q.v.) near village of Omia, province of 
Chachapoyas, Dept. Amazonas; also village of same name. (Steindachner.) 
Tucru: near Morococha, Dept. Junin; 14400 feet elevation; explored by Miss 
Haywood and Mr. A. 8. Kalenborn.** 
Tutumayo, Rio: small, precipitous mountain river joining with Rio Palca 
to form the Chanchomayo at San Ramon. 
Tuptsuka, Lago: west of Rio Ucayali, opposite Contamana, of contours 
similar to the river; waters in circulation, high, turbid.* 
Tust creek: near Pocabamba (q.v.)** 
Ucayaul, Rio: greatest all-Peruvian river, and greatest Peruvian affluent of 
the Amazon, of the order of the Ohio or the Missouri; receiving most of the drain- 
age of the central and southern sections of Peru, entering the Amazon at Nauta; 
navigable many hundred miles to good-sized launches of moderate draught; flat, 
meandering, turbid; within tropical lowlands.* 
Uinamarca, Lacuna: See Titicaca and Guaqui.* 
Umayo (Humayo), Laco: lake five leagues from Puno, northwest, four miles 
in length, near 13000 feet elevation; sites of the ruins Silustani and Atuncolla.* 
Urcos, Laco: near 13000 feet, near Rio Vilcanota and south of Cuzco; the 
lake which, by legend, contains the mammoth chain of gold.** 
UruBamBa, Rio: important northward-flowing stream of southern Peru, be- 
ginning as the Vilecanota and entering the Ucayali. Also known as the Santa 
