Carriker : List of the Birds of Costa Rica. 349 



down into Chiriqui crosses the Rio Grande. The surrounding country 

 is mostly rolling ridges bare of trees, with woodland in the valley 

 along the river-banks and along the deepest of the creek-beds. Mr. 

 Underwood and myself collected a few specimens there, but birds are 

 not abundant. 



" Payua" : — Misspelling of the word Pacuare, as used by Law- 

 rence, and copied by others. 



Peje (Rio) : A small stream flowing into the Reventazon River 

 from the west, a short distance below La Junta. Carmiol mentions 

 this locality, and, since the birds taken at that place are of the Carib- 

 bean lowland fauna, it must be the locality in question. 



Pigres : — A small village at the mouth of the Rio Grande de 

 Tarcoles, on the Gulf of Nicoya, at which Messrs. Ridgway and 

 Zeledon collected in 1905 and 1908. 



Pirris : — [See Pozo Azul (de Pirris).] 



Pbas (Volcan de): — The westernmost of the chain of volcanoes in 

 the central portion of Costa Rica, having a lake in the crater, through 

 which eruptions are made sporadically, much after the manner of a 

 geyser. The altitude of the summit is about 8,700 feet. The crater 

 has the appearance of a vast walled coliseum, the sides of which rise 

 perpendicularly to a height of nearly 1,000 feet, and at the bottom of 

 which lies the lake. The volcano lies almost directly north of Alajuela, 

 distant sixteen miles, the road passing through San Pedro de Poas, 

 from which place the start is made in ascending the volcano. The 

 altitude of San Pedro is about 3,700 feet. 



Potrero Cerrado : — The name of a locality or perhaps " hacienda ' ' 

 on the southwest slope of the Volcan de Irazu. I am not able to 

 locate it exactly or to give the altitude. It is not often referred to by 

 collectors, and mostly by the older ones, such as Frantzius and Bou- 

 card. There is a Potrero Cerrado in the Terraba Valley, but the name 

 as used in ornithological literature never refers to it. 



Pozo Azul (de Pirris ; sometimes referred to as Pirris): — The name 

 given to a locality at which there is little but a wilderness of virgin 

 forest, on the Rio Grande de Pirris. It is only about ten miles from 

 the Pacific Ocean and at a low altitude. With the exception of a few 

 small clearings, the whole region is a virgin forest, and has a very rich 

 bird-fauna. It is reached by a cart-road from San Jose, which goes as 

 far as Sabanilla, on the crest of the coast range, and thence by a nar- 

 row trail. Senor Zeledon and Mr. Underwood have made many col- 



