LIST OF ILLUSTRATIONS. 



Page. 



Plate 1, fig. 1. — Palatal surface of Oaprimulgus europaeus 120 



2. — Palatal euxface of Chordeiles virginianus virginianus 120 



2, fig. 1. — Palatal surface of Antrostomus carolinensis 120 



2. — Palatal surface of Setochalcis vocif era vocif era 120 



3. — Breeding ranges of the subspecies of Chordeiles virginianus 120 



4. — Breeding ranges of the Central American and North American sub- 120 



species of Chordeiles acutipennis 120 



5. — Breeding ranges of the South American subspecies of Chordeiles 120 



acutipennis 120 



6. — Breeding ranges of the subspecies of Chordeiles rupestris 120 



VII 



