Bulletin of the AMNH. Volume 99, Article 3, pp.79-258. Proceedings of the Symposium on 'The Role of the South Atlantic Basin in Biogeography and Evolution ,' held at the fourth annual meeting of the Society for the Study of Evolution, in New York City, December 28 and 29, 1949. Five black and white plates. Illustrations and maps in black and white. Near fine in original blue wrappers.