XVIII TABLE OF CONTENTS. 



5. Eegulus calendula calendula (Linnseus) 705 



6. Eegulus calendula grinnelli Palmer 709 



7. Eegulus calendula obscurus Eidgway 710 



Genus 3. Polioptila Sclater 710 



Key to the Species and Subspecies of Polioptila 713 



8. Polioptila oeerulea cserulea (Linnasus) 716 



9. Polioptila caerulea obscura Eidgway 720 



10. Polioptila cs9rulea mexicana (Bonaparte) 722 



11. Polioptila cserulea ctesiogastra Eidgway 723 



12. Polioptila nelsoni Eidgway 724 



13. Polioptila albiloris Sclater and Salvin 725 



14. Polioptila bairdi Eidgway 726 



15. Polioptila bilineata (Bonaparte) 726 



16. Polioptila superciliaris superciliaris Lawrence 727 



17. Polioptila superciliaris magna Eidgway 728 



18. Polioptila albiventris Lawrence 729 



19. Polioptila nigriceps Baird 729 



20. Polioptila plumbea Baird 731 



21. Polioptila californica Brewster 734 



22. Polioptila lembeyei (Gundlach ) 735 



Addenda 737 



Index 755 



List of figures illustrating generic details xix 



