audslay,
III, Pl. 78).

[Illustration: PLATE 21]

PLATE 22

AVES

YUCATAN HORNED OWL (_Bubo virginianus mayensis_)

1. Bologna 7.
2. As a head-dress, Tro-Cortesianus 95c.
3. Borgia 7.
4. On end of staff carried by warrior, Chichen Itza, Temple of the
Tigers, Lower Chamber (Maudslay, III, Pl. 49).
5. Aubin 13.
6. Head highly conventionalized, Palenque, Temple of the Sun
(Maudslay, IV, Pl. 88).
7. Screech-owl (_chiquatli_), Aubin.

[Illustration: [PLATE] 22[TN-25]]

PLATE 23

AVES

YUCATAN SCREECH OWL or _Moan-bird_ (_Otus choliba thompsoni_)

1. Dresden 7c.
2. Tro-Cortesianus 66a.
3. Dresden 11a.
4. As a head-dress, Tro-Cortesianus 94c.
5. As a head-dress, Dresden 18b.
6. Glyph associated with Moan-bird, Dresden 7c.
7. Same, Dresden 7c.
8. Dresden 10a.
9. Peresianus 10.
10. Peresianus 5.
11. Glyph representing head, Dresden 38c.
12. Same, Dresden 8b.
13. Same, Dresden 53b.
14. Same, Dresden 16c.
15. Glyph possibly representing Moan-bird, Dresden 38c.
16. Glyph of head, Dresden 53b.
17. Glyph associated with Moan-bird.
18. Tro-Cortesianus 73b.
19. As a head-dress, Dresden 16c.
20. As a head-dress, Tro-Cortesianus 95c.
21. Glyph associated with Moan-bird, Dresden 7c.

[Illustration: PLATE 2[3][TN-26]]

PLATE 24

AVES

COPPERY-TAILED TROGON or QUETZAL (_Pharomacrus mocinno_)

1. Head-dress with crest feathers shown as knobs, Dresden 7c.
2. Head-dress, Dresden 13b.
3. Same, Dresden 16c.
4. Tro-Cortesianus 100b.
5. Tro-Cortesianus 70a.
6. Head-dress, Tro-Cortesianus 94c.
7. Nuttall 33.
8. Conventionalized tail as a head ornament, Dresden 20c.
9. Vaticanus 3773, 17.
10. Glyph, Palenque, Temple of the Sun (Maudslay, IV, Pl. 89, gl. O,
9).
11. Trogon descending on a sacrifice, Bologna 8.
12. Tro-Cortesianus 36b.
13. Glyph, Copan (Maudslay, I, Pl. 111, gl. 54).
14. Glyph apparently representing a trogon's head, Dresden 20c.
15. Same, Dresden 9b.
16. Same, Dresden 3a.
17. Head, Nuttall 43.
18. Tro-Cortesianus 26c.
19. Figure with head ornament resembling a trogon glyph, Dresden 20c.

[Illustration: PLATE 24]

PLATE 25

AVES

BLUE MACAW (_Ara militaris_)

1. Figure with macaw head and holding firebrands, Dresden 40b.
2. Head-dress, Dresden 16c.
3. Tro-Cortesianus 12a.
4. Glyph, Copan, Stela 11 (Maudslay, I, Pl.