76 FISHES OF WESTERN SOUTH AMERICA 
in the valley of the lower Azupizu, in the northern foothills of the Cadena de la 
Sal.* 
Mono: village, port, bay, and provincial capital, northeast corner of Lake 
Titicaca; old and new village, the latter at the SS. landing on the fjord-like, granite- 
bordered bay.* 
Mouino, Rio DE: small, sluggish, meandering creek entering western side of 
Lake Titicaca above Pomata, from western cordillera.* 
Monterico: a farm at the confluence of the Pulperia and Apurimac rivers, 
75 miles from Huanta, province of Huanta, Dept. Ayacucho, elevation 2723 feet. 
Morona, Rio: small, navigable river of Ecuadorean and Peruvian lowlands, 
skirting the eastern foothills of the Andes; the first of the left-hand tributaries of 
the Amazon east of the mountains.* 
Moronacocua: cutoff lake derived from the Nanay, in the rear of Iquitos; 
deep, clear, bluffy bank used as a summer resort.* 
MoyosBamMBa: city and provincial capital on the Rio Mayo, tributary of the 
Huallaga, Dept. San Martin; on northern overland trail Cajamarca to the Huallaga. 
Muvtato, Rio pE: good-sized stream of the Bolivian pampas, arising in the 
foothills of the Eastern Cordillera, entering Lake Poopé near the southeastern 
corner.* 
Nanay, Rio: river entering Amazon just below Iquitos, from the Ecuadorean 
foothills to the northwest; navigable to larger launches of the Iquitos fleet.* 
Napo, Rio: large Ecuadorean and Peruvian tributary of the Amazon below 
Iquitos, discovered by the first conquistador expedition to the Amazon, conducted 
by Pizarro and Orellana. On the route to Quito. 
Nauta: former village, former port, and one-time metropolis of Loreto, before 
the arrival of the larger Brazilian river steamboats; left bank Peruvian Amazon, 
just above the confluence with the Ucayali. (Orton, Herndon, and various earlier 
travelers. ) 
NukEvA YTALIA: puesta, or chacara of Sr. Julio Battistini on right bank of 
Ucayali above Contamana, adjoining the channel of the Lago Cashiboya, my 
headquarters for a week.* 
Occopata, Rio: a small branch of the upper Urubamba.** 
OLLANTAITAMBO: village, Incaic ruins, upper Rio Urubamba. (Bowman.)** 
ORELLANA: small town, on high right bank of Rio Ucayali below Contamana.* 
Oroya: village, new and old (the former largely Anglo-American) on Rio 
Mantaro at 12000 feet elevation between Eastern and Western cordilleras, central 
Peru; smelter and hydroelectric plant of the Cerro de Pasco Copper Co; Old Oroya 
down the river a short distance. Rio de Oroya a very small stream descending the 
slopes of the Eastern Cordillera to the Mantaro at Old Oroya; the last half mile 
very precipitous, and among many boulders. (See Pygidium oroyae.)** * 
OrvuRO: city and department of the Poopé valley of Bolivia; 18 8. latitude; 
above 12000 feet elevation; mining center.* 
Pacaya, Rro: small, sluggish, brown river in lowlands, arising in the lomas of 
the northern part of the Eastern Cordillera, and emptying by more than one outlet 
to the Puinagua and Bajo Ucayali; densely forested and sparsely inhabited by 
