CONTENTS I. Introduction.................. 3 A. Scope of the present paper............. 3 B. Measurements................ 7 C. Nomenclature................ 8 D. Acknowledgements............... 9 II. General Part.................. 10 A. History of the study of Suriname bats.......... 10 B. Remarks on Suriname bat life............ 18 1. Habitats of bats............... 19 2. Usefulness of bats.............. 22 3. Enemies of bats............... 22 4. The control of bats.............. 23 III. Systematic Part................. 25 Family Emballonuridae............... 26 Subfamily Emballonurinae............. 28 Subfamily Diclidurinae.............. 58 Family Noctilionidae............... 62 Family Phyllostomidae............... 73 Subfamily Chilonycterinae............. 74 Subfamily Phyllostominae............. 78 Subfamily Glossophaginae............. 126 Subfamily Carolliinae............... 144 Subfamily Sturnirinae.............. 153 Subfamily Stenodermatinae............. 157