TABLE OF CONTENTS. 



Introductory remarks '. . 7 



Notes on collection and preservation of specimens 7 



Description of species 10 



Davainea rhynchota, new species 10 



Davainea comitaia, new species 15 



Liga brasiliensis (Parona, 1901) . .• 21 



Rhabdometra nulUcoUis, new species 25 



Rhabdometra similis, new species 30 



Anonchotsenia globata (Linstow, 1879) 34 



Hymenolepis cantaniana (Polonio, 1860) 36 



Diorchis acuminata (Clerc, 1902) 42 



Diorchis americana, new species 48 



Synopsis of the superfamily Tsenioidea 52 



Key to genera 53 



Diagnoses of families, subfamilies, and genera, and lists of species occur- 

 ring in North American birds 59 



Compendium of species parasitic in North American birds, arranged 



according to hosts 108 



Bibliography 117 



Index 129 



5 



