Overview These papers are concerned with five separate expeditions for collecting vertebrates in South America. The first three, in 1929-1932 were made to Peru, while the second two, 1933-1935 were to Bolivia. Melbourne A. Carriker was a Philadelphian interested in becoming a collector and through the sponsorship of the Academy and financial aid of Clement B. Newbold, he went to Peru where he collected birds and mammals. Later, on his Bolivian expeditions he was accompanied by his son M.R. Carriker...