TABLE OF CONTENTS. 



Page. 



SUPERFAMILY MeSOMYODI ' 1 



Characters of the Tracheophone IMesomyodi 1 



Key to the Families of Tracheophoiux> 3 



Family Pteroptochid^e 4 



Genus 1. Scytalopiis Gould 5 



1. Scytalojjus argentifi'ons Ridgway 6 



Family Formicariid^ 7 



Key to the Genera of Formicariida? 10 



Genus 1. Cymbilaimus Gray 18 



1. Cymbilaimus lineatus fasciatus Ridgway 19 



Geaus 2. Thamnistes Sclater and Salvin 21 



2. Thamnistes anabatinus anabatinus Sclater and Salvin 22 



3. Thamnistes anabatinus saturatus Ridgway 23 



Genus 3. Abalius Cabanis 24 



4. Abalius bridgesi (Sclater) 25 



Genus 4. Taraba Lesson 27 



5. Taraba transandeana transandeana (Sclater) 28 



Genus 5. Hypolophus Cabanis and Heine 32 



6. Hypolophus canadensis jjulchellus (Cabanis and Heine) 33 



Genus 6. Thamnophilus Vieillot 34 



Key to the Species and Subspecies of Thamnophilus 35 



7. Thamnophilus radiatus nigricristatus (Lawrence) 37 



8. Thamnophilus doliatus mexicanus Allen 40 



9. Thamnophilus doliatus pacificus Ridgway 43 



10. Thamnophilus doliatus yucatanensis Ridgway 44 



11. Thamnophilus multistriatus Lafresnaye 45 



12. Thamnophilus virgatus virgatus Lawrence 46 



Genus 7. Erionotus Cabanis and Heine 47 



Key to the Subspecies of Erionotus punctatus 49 



13. Erionotus punctatus atrinucha (Salvin and Godman) 49 



14. Erionotus punctatus gorgonte (Thayer and Bangs) 52 



Genus 8. Dysithamnus Cabanis 52 



Key to the Species and Subspecies of Dysithamnus 54 



15. Dysithamnus men talis septentrionalis Ridgway 55 



16. Dysithamnus puncticeps Salvin 58 



17. Dysithamnus striaticeps La^vrence 59 



Genus 9. Myrmotherula Sclater 60 



Key to the Species of Myrmotherula 62 



18. MjTmotherula surinamensis (Gmelin ) 62 



19. MjTmotherula pygmaa (Gmelin) 64 



I Continued from Part IV, pp. 328-332. 



IX 



