x TABLE OF CONTENTS. 
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Genus 10. Myrmopagis Ridgway... ..-.-------------eeeee reer etter 65 
Key to the Species and Subspecies of Myrmopagis....----------++++----077- 67 
20. Myrmopagis meleena (Sclater).........-----+-0e2eeececte etter 68 
21. Myrmopagis schisticolor (Lawrence) ....-----------++++2ererr rrr 70 
22. Myrmopagis fulviventris (Lawrence)........--------+-+-++0ereccttee 73 
Genus 11. Microrhopias Sclater........---+-----+- 22-22 eer e cre 75 
Key to the Species and Subspecies of Microrhopias...-....-----------------+ 76 
23. Microrhopias boucardi boucardi (Sclater)....--.----------++--+2+-++ 78 
24. Microrhopias boucardi virgata (Lawrence)....------------+-++-+++2++-- 79 
25. Microrhopias boucardi consobrina (Sclater).....----+------+++++++++- 80 
26. Microrhopias grisea alticincta (Bangs)......-.-------------+-20rereee 81 
Genus 12. Terenura Cabanis and Heine......-.-.-..-------++22 22 eee eee eee 83 
27. Terenura callinota (Sclater).......-.--.-------+-22eeeece erste eee 84 
Genus 13. Ramphoceenus Vieillot.....-...---.-. 222-2222 2e eee ere 84 
28. Ramphocenus rufiventris rufiventris (Bonaparte).......------------- 85 
Genus 14. Microbates Sclater and Salvin. .....-....-----------+-+-2+e2e eee 88 
29. Microbates cervineiventris semitorquatus (Lawrence). ..-..-.-.------ 89 
Genus 15. Cercomacra Sclater.........---.-- 2-222 ee cece eee ete eee terete 90 
Key to the Species and Subspecies of Cercomacra......---.-------+---++-++ 91 
30. Cercomacra nigricans Sclater......-.-...---------2 22sec eee eee eee 91 
31. Cercomacra tyrannina tyrannina (Sclater)............---------2+-++++ 93 
32. Cercomacra tyrannina crepera (Bangs)... .......-.-----+----+++++--- 95 
Genus 16. Gymmocichla Sclater......-----.-2-- 222-2222 c cece ee cee eee eee 97 
Key to the Species and Subspecies of Gymnocichla............-.---+--+--+-+-+-- 98 
33. Gymnocichla nudiceps nudiceps (Cassin). .-......-..-.------.+2+-++ 99 
34. Gymnocichla nudiceps erratilis Bangs. ......-......--.------------- 101 
35. Gymnocichla chiroleuca Sclater and Salvin. ......-...-.-..--..-5-- 101 
Genus at, Myrmeciza Grayies an ciscistrecnccmmtasaerareenaeiaeae aanheneemede 103 
Key to the Species and Subspecies of Myrmeciza............-----.-2--+---5-- 105 
36. Myrmeciza boucardi panamensis Ridgway. .........-.------.2------ 107 
37. Myrmeciza lemosticta Salvin. ...-.-..---- 22-22-22 eee eee eee 109 
38. Myrmeciza cassini (Ridgway). ...-...-----------2+-- eee eee eee eee 110 
39. Myrmeciza exsul exsul Sclater......-..2.-2 202-2062 e eee eee eee 111 
40. Myrmeciza exsul occidentalis (Cherrie)........-....--2--2-222--2---- 113 
41. Myrmeciza zeledoni Ridgway... ........---------22-- 222 ee eee ee eee 114 
Genus 18. Formicarius Boddaert....22 0002-2 0eseesecaneeseseeyessoressesese 115 
Key to the Species and Subspecies of Formicarius...-.........-..22.-2+--- 117 
42. Formicarius analis nigricapillus (Ridgway). ....-....-.-----.-.------ 118 
43. Formicarius moniliger moniliger Sclater.......-..-.........-... Sica: LL 
44, Formicarius moniliger intermedius Ridgway. ....-.......-.........- 121 
45. Formicarius moniliger pallidus (Lawrence)...................2----. 121 
46. Formicarius moniliger umbrosus (Ridgway). .......-..------.-....-- 122 
47. Formicarius moniliger hofimanni (Cabanis)..................22..--- 123 
48. Formicarius moniliger panamensis Ridgway..................2.-.-. 124 
49. Formicarius rufipectus Salvin... 2.2... 22 0.22 ee eee eee 125 
Genus 19. Hylophylax Ridgway... .- 22.2.2... 2.2.2 126 
50. Hylophylax neevioides (Lafresnaye).........2.......20020. cee eee 128 
Genus 20. Anoplops Cabanis and Heine. ..... 2.2... 000.0000c0eeeee cece cece 130 
Key to the Species of Anoplops. .-........-.-2- 0.002020 cece cece eee eee eeee 131 
51. Anoplops bicolor (Lawrence)... ........2-.-. 202.022 eee eee eee 132 
52. Anoplops olivascens (Ridgway)....-.....-.--...-...-200 cee ee ee eee ee 132 
Genus 21. Pheenostictus Ridgway.......... 2.0.0.2... ec ce e cee ee cee eee eeeeee 134 
53. Pheenostictus mcleannani mcleannani (Lawrence)................-..- 135 
54. Phenostictus mcleannani saturatus (Richmond)....................- 136 
