Includes bibliographies The work of Wilfred Hudson Osgood, by Stanley Field.--Personal appreciation, by C. C. Gregg.--Pygmy sperm whale in the Atlantic, by G. M. Allen--Mammals collected by the Vernay-Cutting Burma expedition, by H. E. Anthony.--Cranial and dental characters of some South American Cervidae, by Angel Cabrera.--The Arteries of the forearm in carnivores, by D. D. Davis.--A Pleistocene otter from Iowa, by E. A. Goldman.--Revision of the rodent genus Microdipodops, by E. R. Hall.--The femoral trochanters, by A. B. Howell.--On the identity of the porpoise Sagmatias amblodon, by Remington Kellogg.--Incisor tips of young rodents, by Barbara Lawrence.--The races of the ocelot and the margay, by R. I Pocock.--Descriptions and records of neotropical bats, by C. C. Sanborn