EXPLANATION OF THE PLATES. 207 



Fig 



'o' 



16. Wing of (Ecodoma cephalotes, $ . 



17. Protile of (Ecodoma aspersa^ $ . 



18. „ „ hystrix, ^. 



19. „ „ sexdentata, ^ . 



20. Abdomen of (Ecodoma 3Iexicana, $ . 



21. „ „ cephalotes, 2 . 



22. „ „ ahdominalis, ^ • 



23. Head of (Ecodoma cephalotes, worker major. 



24. „ „ IcPDi'f/ata, worker minor. 



25. Head and thorax of Pseudomyrma cephalica, 



26. Abdomen of Pseudomyrma cephalica, 5 • 



PLATE XI. 



1. Cryptocerus discucephalus, J . 



2. „ „ worker major. 



3. ,j „ worker minor. 



4. Mandible of Cryptocerus atratus, 5 . 



5. Labial palpi of Cryptocerus atratus, 5 • 



6. Maxillary palpus of Cryptocerus atratus, $ . 



7. Cryptocerus serraticeps, 2 • 



8. „ mmufus, worker minor. 



9. „ pusillus, ^ . 



10. Cataulacus parallelus, $ . 



11. Head of Cataulacus Taprohaua, § . 



12. Thorax of Catatdacus TaprohaiKe, ^ . 



PLATE XIL 



1. Head of Meranoplus, ^ . 



2. „ Cataulacus, ^ . 



3. Cryptocerus minutus, worker major. 



4. „ anyulatus, ^ . 



5. Meranoplus petiolatus, j . 



6. Antennae of Meranoplus petiolatus, 5 . 



7. Meranoplus yracilis, § . 



8. „ diforntis, ?• _ 



9. Antennae of Meranoplus difformis. 



10. „ Cataulacus horridus. 



11. ^^ Meranoplus bicolor. 



12. Cryptocerus obtusus, ^ . 



PLATE Xm. 



1. Polyrhachis bispinosus, ^ . 



2. Scale of the petiole, viewed in front. 



3. Lateral view of the same. 



