(Uploaded by Plazi for the Bat Literature Project) Two species of shrews and four species of bats are described for Late Pleistocene fossils from Te´rapa, Sonora, Mexico. Shrews include Notiosorex and an indeterminate genus and species of Soricidae. Bats include several vespertilionids (Lasiurus, Antrozous pallidus, and Myotis) and a molossid (Tadarida brasiliensis). Previous interpretations based on evidence from sediments and other fossils at Te´rapa suggested the Late Pleistocene presence of a riparian corridor that was wetter and more tropical than at present, including a slowmoving stream, riparian forest, ponded water, marsh, and savanna, or a submerged to emergent grassland. Vertebrate fossils including a crocodylian, certain birds, and a capybara supported the more-tropical interpretation for these habitats. The bats and shrews in the Pleistocene paleofauna support these inferred paleohabitats but only weakly support the more-tropical aspect. Only one bat (Tadarida brasiliensis) has largely tropical biogeographic affinities; the others are widespread or temperate-zone taxa. None of the Neotropical families Phyllostomidae, Mormoopidae, or Natalidae that presently occur in the vicinity of Te´rapa are yet represented by fossils there. This fact might reflect a nonanalog Late Pleistocene fauna or might simply be due to the general rarity of bat and shrew fossils in fluvio-lacustrine deposits.