TABLE OF CONTENTS. 
SuPERFAMILY MESOMYODI!.........-2.-2 20-02-2202 eee eee ee eee eee 
Characters of the Tracheophone Mesomyodi............-.----+-.2---++--++--- 
Key to the Families of Tracheophone..........-..2-..-2-22-20220 eee eee ee 
Famity PreROPTOCHID®. .....-.-2. 2222020022 eee eee ee eee ee eee eee 
Genus 1. Scytalopus Gould... ............2.-2.-2- 2022222 
1. Scytalopus argentifrons Ridgway... ........22..2.-22-2 220220 
Fairy FORMICARMDAs.siceeo05s2c4ennesedaee ves ssigusockece er eesss exeeee 
Key to the Genera of Formicariide................-2.-22--022 220222 e ee eee 
Genus 1. Cymbilaimus Gray......-.....-22..-222.2 222 eee eee eee eee eee 
1. Cymbilaimus lineatus fasciatus Ridgway... .....-..--------2--2---+- 
Genus 2. Thamnistes Sclater and Salvin..........-..2..22.20.2...022-----05- 
2. Thamnistes anabatinus anabatinus Sclater and Salvin. ...........-.-- 
3. Thamnistes anabatinus saturatus Ridgway..........-....2-22-.------ 
Genus 3: Abalius:Cabanis. circ icicine as uidiveeeeec bb esdd saeibidoee Ped Sa08 sacks 
4. Abalius bridgesi (Sclater)............---.-.-------+---- SSE aoc See 
Genus 4. Paraba LessOie cans vos citeee ce eeeee es se i seceeaces tee sseeaeees 
5. Taraba transandeana transandeana (Sclater) .............-.--.-2------ 
Genus 5. Hypolophus Cabanis and Heine. ...........-.-.---2--2-+--2--+-+--- 
6. Hypolophus canadensis pulchellus (Cabanis and Heine).............. 
Genus 6. Thamnophilus Vieillot. ............2...2.--2- 2202222 e eee eee eee 
Key to the Species and Subspecies of Thamnophilus. ............-.....-.-- 
7. Thamnophilus radiatus nigricristatus (Lawrence)........-.--..-+-.--- 
8. Thamnophilus doliatus mexicanus Allen.............-.-.-.----2-+---- 
9. Thamnophilus doliatus pacificus Ridgway. ....-.....-.--2-----2---. 
10. Thamnophilus doliatus yucatanensis Ridgway.............---..----- 
11. Thamnophilus multistriatus Lafresnaye................22---.------- 
12. Thamnophilus virgatus virgatus Lawrence ......-.-.-.------------ 
Genus 7. Erionotus Cabanis and Heine..........-...-..2..-22.22-20----2---- 
Key to the Subspecies of Erionotus punctatus ..............--------------- 
13. Erionotus punctatus atrinucha (Salvin and Godman)............-.-- 
14. Erionotus punctatus gorgonee (Thayer and Bangs).......-..-..----- 
Genus 8. Dysithamnus Cabanis.............-.2- 22-2222 e eee eee eee 
Key to the Species and Subspecies of Dysithamnus. ..........-....-.-...+-- 
15. Dysithamnus mentalis septentrionalis Ridgway. ....-....-..-..----- 
16. Dysithamnus puncticeps Salvin........-......------2- 2 eee eee eee 
17. Dysithamnus striaticeps Lawrence. .........-..------- +222 222-2 eee 
Genus 9. Myrmotherula Sclater..........-.2..2.22- 22-22-02 eee eee eee eee eee 
Key to the Species of Myrmotherula .......-...--.---- 2-2-2 -- ee eee eee eee ee 
18. Myrmotherula surinamensis (Gmelin)... .....---.-..2--2-2--2e eee ee 
19. Myrmotherula pygmeea (Gmelin)....-.--.-..---- 2-0-2 e ee eee ee eee eee ; 
1 Continued from Part IV, pp. 328-332. 
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