Mammals in the Royal Natural History Museum, Stockholm, collected in Brazil and Bolivia by A.M. Olalla during 1934-1938

Abstract

During the 1930s, A.M. Olalla assembled extraordinary collections of mammals from various parts of Brazil and Bolivia. Several important collections dating from this period were purchased by Nils Gyldenstolpe of the Royal Natural History Museum, Stockholm, but the collections were never identified, nor were records ever published. These collections present a large number of new locality records, several remarkable range extensions, a number of very poorly known species, and three apparently undescribed species (one bat, two rodents). Formal description of the new forms is deferred until revisions of Tonatia and Oxymycterus are completed. Field observations document several novel roosting habits of bats and foraging sites for certain quadrupeds. Lists of species taken at different sites offer new information on syntopic assemblages of mammals in different lowland and highland sites.