Plate. 1. Mollusca: _Fasciolaria gigantea, Oliva_. 2. Insecta: Honey bee (_Melipona_). 3. Insecta and Myriapoda. 4. Arachnoidea, Arachnida, Crustacea. 5. Myriapoda, Pisces. 6. Pisces. 7. Amphibia. 8. Amphibia, Reptilia. 9. Reptilia: Rattlesnake (_Crotalus_). 10. Reptilia: Serpents. 11. Reptilia: Serpents. 12. Reptilia: Iguana, Lizards. 13. Reptilia: Crocodile 14. Reptilia: Turtles. 15. Aves: Herons, Frigate-bird. 16. Aves: Ocellated Turkey (_Agriocharis ocellata_). 17. Aves: King Vulture (_Sarcorhamphus papa_). 18. Aves: King Vulture (_S. papa_), Black Vulture (_Catharista urubu_). 19. Aves: Vultures. 20. Aves: Harpy Eagle (_Thrasaetos harpyia_). 21. Aves: Yucatan Horned Owl (_Bubo virginianus mayensis_). 22. Aves: Yucatan Horned Ow[TN-1] (_B. v. mayensis_). 23. Aves: Yucatan Screech Owl (_Otus choliba thompsoni_). 24. Aves: Quetzal (_Pharomacrus mocinno_). 25. Aves: Blue Macaw (_Ara militaris_). 26. Aves: Parrots, Turkeys. 27. Aves: Miscellaneous. 28. Various animals. 29. Mammalia: Armadillo and miscellaneous. 30. Mammalia: Deer, Hare. 31. Mammalia: Yucatan Deer (_Odocoileus yucatanensis_). 32. Mammalia: Yucatan Peccary (_Tayassu angulatum yucatanense_), Yucatan Deer (_O. yucatanensis_). 33. Mammalia: Yucatan Peccary (_T. a. yucatanense_). 34. Mammalia: Jaguar, Puma. 35. Mammalia: Jaguar, Coyote, Bear. 36, 37. Mammalia: Dog (_Canis_). 38. Mammalia: Leaf-nosed Bat (_Vampyrus_ or _Phyllostomus_). 39. Mammalia: Monkey (_Cebus_) and miscellaneous. LIST OF ILLUSTRATIONS IN TEXT FIG. 1. Top of Altar T, Copan (Mandslay,[TN-2] I. Pl. 95) 320 2. Pottery whistle from Uloa Valley, Honduras, representing a vulture. Peabody Museum Memoirs. I. No. 4, fig. 15 332 3. } 4. } Glyphs of Maya month _Moan_ showing moan-bird 5. } characteristics 339 6. } 7. Quetzal from the bas-relief of the Temple of the Cross, Palenque 341 8. } 9. } Glyphs for Maya month _Kankin_ (Ribs of dogs) 364 10. } 11. } 12. } 13. } Glyphs for Maya month _Zotz_ (Bats) 365 14. } 15. Pottery whistle from Uloa Valley, Honduras (Peabody Museum Memoirs, I, No. 4, fig. 14), representing an ape 366 16. } 17. } 18. } Glyphs for Maya day _Chuen_ 367 19. } 20. } 21. } 22. } Glyphs of God C. (Schellhas, Peabody Museum Papers, IV, 368 23. } No. 1) 24. } INTRODUCTION.