SOURCES OF THE MATERIAL. 15 



3000 feet collections were made above the mouth of the Guaitara. He returned 

 via Pasto to Tuquerres and Barbacoas. He next descended the Rio Telembi 

 to its mouth and ascended the Rio Patia and the Rio Magui, the first large 

 tributary of the Patia above the Telembi to the village Payan. 



Returning to Tumaco on the coast he went via Buenaventura to Puerto 

 Negria, the head of steam navigation of the San Juan River. Drifting down 

 the San Juan to the Rio Calima, the last large tributary of the San Juan from 

 the east, he ascended the Calima, collecting in a small creek near its mouth, 

 and at Boca de Guineo about thirty miles from the mouth of the Calima. After 

 ascending the Rio El Guineo to a portage, he crossed over to the San Joaquin 

 and descended it to Buenaventura. 



He next went to Guayaquil from where several shorter excursions were 

 made. The first of these lead to Naranjito. Collections were made south of 

 Naranjito in a small creek Estero Verdes, a tributary of the Rio Chan Chan, 

 and in a deep river, the Rio Barranca Alta. The second shorter trip from 

 Guayaquil was to the small rivers at Chone and Portoviejo. The third trip 

 took him to Daule, Santa Lucia, and Colimes on the Rio Daule. Returning 

 to Daule he crossed over along a winding cut-off from the Rio Palenque to Vinces. 



Returning to Guayaquil from Vinces, he went by rail to Quito, collecting 

 en route at Huigra (4000 feet), Rio Bamba (9020 feet), Latacunga (9055 feet) 

 and Quito (9375 feet). A short trip was made from Quito to Mindo (4108 feet). 

 Later he went to El Angel (10,000 feet) and down the Rio Chota or Mira to 

 Maria Luisa, the property of Sn. C6sar Mena. Collections were also made in 

 the Rio Chota at Guallupi (5,000 feet). He returned to Quito and later went 

 via Angel by packtrain to Barbacoas and steamer to Tumaco. 



By the various expeditions outlined above, collections have been obtained 

 from most of the Pacific slope streams between Panama and Peru. 



The first series of the specimens collected in the Landon Expedition is in 

 Indiana University. Other series are in the Carnegie Museum, the Museum 

 of Comparative Zoology, the U. S. National Museum, the Field Museum, and 

 the Museum of Stanford University. 



