Les chromosomes des Sorex du groupe araneus-arcticus (Mammalia, Insectivora)

leni and Tadarida cistura. Can. J. ZooL, 49, 1347— 1354. Roberts, A. (1951): The mammals of South Africa. Trustees of The mammals of South Africa Book Fund, Johannesburg. Ross, A. (1967): Ecological aspects of the food habits of insectivorous bats. Proc. West. Found. Vertebr. ZooL, 1, 205—263. Schoener, T. W. (1965): The evolution of bill size differences among sympatric congeneric Speeles of birds. Evolution, 19, 189—213. Setzer, H. W. (1957): A review of Libyan mammals. J. egypt. publ. Hlth. Ass., 32, 41—82, Simpson, G. G. (1964): Species density of North American recent mammals. Syst. ZooL, 13, 57—73. Smithers, R. H. N. (1968): A chek list and atlas of the mammals of Botswana (Africa). Trustees natl. Mus. Rhodesia. Storch, G. (1968): Funktionsmorphologische Untersuchungen an der Kaumuskulatur und an korrelierten Schädelstrukturen der Chiropteren. Abh. senckenberg. naturf. Ges., 517, 1—92. Struhsaker, T. T. (1961): Morphological factors regulating flight in bats. J. MammaL, 42, 152—159. Tamsitt, J. R. (1967): Niche and species diversity in neotropical bats. Nature, London, 213, 784—786. Toschi, A. (1954): Elenco preliminare dei mammiferi della Libia. Suppl. Ric. ZooL appl. Caccia, Bologna, 2, 241—273. Veiga-Ferreira, M. C. (1949): Notas acerca dos microquiropteros da Guine Portuguesa. Ann. Jta. Missöes Geograf. Invest. colon. Lisboa, (Trab. Missäo ZooL Guine), 4, 187