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TABLE OF CONTENTS.
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Genus 10. Myrmopagis Ridgway 65 Key to the Species and Subspecies of Myrmopagis 67 20. Myrmopagis melæna (Sclater) 68 21. Myrmopagis schisticolor (Lawrence) 70 22. Myrmopagis fulviventris (Lawrence) 73 Genus 11. Microrhopias Sclater 75 Key to the Species and Subspecies of Microrhopias 76 23. Mcrorhopias boucardi boucardi (Sclater) 78 24. Microrhopias boucardi virgata (Lawrence) 79 25. Microrhopias boucardi consobrina (Sclater) 80 26. Microrhopias grisæ alticincta (Bangs) 81 Genus 12. Terenura Cabanis and Heine 83 27. Terenura callinota (Sclater) 84 Genus 13. Ramphocænus Vieillot 84 28. Ramphocænus rufiventris rufiventris (Bonapaile) 85 Genus 14. Microbates Sclater and Salvin 88 29. Microbates cervineiventris semitorquatus (Lawrence) 89 Genus 15. Cercomacra Sclater 90 Key to the Species and Subspecies of Cercomacra 91 30. Cercomacra nigricans Sclater 91 31. Cercomacra tyrannina tyrannina (Sclater) 93 32. Cercomacra tyrannina crepera (Bangs) 95 Genus 16. Gymnocichla Sclater 97 Key to the Species and Subspecies of Gymnocichla 98 33. Gymnocichla nudiceps nudiceps (Cassin) 99 34. Gymnocichla nudiceps erratilis Bangs 101 35. Gymnocichla chiroleuca Sclater and Salvin 101 Genus 17. Myrmeciza Gray 103 Key to the Species and Subspecies of Myrmeciza 105 36. Myrmeciza boucardi panamensis Ridgway 107 37. Myrmeciza læmosticta Salvin 109 38. Myrmeciza cassini (Ridgway) 110 39. Myrmeciza exsul exsul Sclater 111 40. Myrmeciza exsul occidentalis (Cherrie) 113 41. Myrmeciza zeledoni Ridgway 114 Genus 18. Formicarius Boddaert 115 Key to the Species and Subspecies of Formicarius 117 42. Formicarius analis nigricapillus (Ridgway) 118 43. Formicarius moniliger moniliger Sclater 119 44. Formicarius moniliger intermedius Ridgway 121 45. Formicarius moniliger pallidus (Lawrence) 121 46. Formicarius moniliger umbrosus (Ridgway) 122 47. Formicarius moniliger hoffmanni (Cabanis) 123 48. Formicarius moniliger panamensis Ridgway 124 49. Formicarius rufipectus Salvin 125 Genus 19. Hylophylax Ridgway 126 50. Hylophylax nævioides (Lafresnaye) 128 Genus 20. Anoplops Cabanis and Heine 130 Key to the Species of Anoplops 131 51. Anoplops bicolor (Lawrence) 132 52. Anoplops olivascens (Ridgway) 132 Genus 21. Phænostictus Ridgway 134 53. Phænostictus mcleannani mcleannani (Lawrence) 135 54. Phænostictus mcleannani satinatus (Richmond) 136