There seems to be a glyph used for the quetzal. In those drawn in Pl. 24, figs. 10, 17, it is noticeable that the anterior part only of the head is shown. The first is a glyph from the tablet of the Temple of the Sun at Palenque, and at least suggests the quetzal by the feathers on the top of the head, as also Pl. 24, fig. 13, a glyph from Copan, Stela 10, where the entire head appears in a much conventionalized form. Other glyphs are shown in Pl. 24, figs. 14-16, in which there is a single prominent recurved feather shown over the eye, succeeded by a few conventionalized feathers, then one or more directed posteriorly. It is to be noted that whereas in many previous examples of glyphs the full drawing of the animal or bird has been found in connection with them, here with the quetzal glyphs there is no instance where a drawing of the bird occurs with them. A curious human figure (Pl. 24, fig. 19), with a head decoration similar to the frontal curve and markings on the quetzal glyphs (fig. 14-16), may possibly represent this bird in some relation. BLUE MACAW (_Ara militaris_). A large macaw (Maya, _mox_ or _ṭuṭ_) is undoubtedly pictured in the figures in Pl. 25. The least conventionalized drawing found is that shown in Dresden 16c (Pl. 25, fig. 2), a bird characterized by long narrow tail feathers, a heavy bill, and a series of scale-like markings on the face and about the eye. Further conventionalized drawings are found in Pl. 25, figs. 3, 10, 13, and Pl. 26, fig. 1. In all these the tail is less characteristic, though composed of long, narrow feathers, and the facial markings are reduced to a ring of circular marks about the eye. These last undoubtedly represent, as supposed by Stempell, the bare space about the eye found in certain of these large parrots. In addition, the space between the eye and the base of the bill is partially bare with small patches of feathers scattered at somewhat regular intervals in rows. It is probable that this appearance is represented by the additional round marks about the base of the bill in Pl. 25, figs. 1, 2, 5, 8, the last two of which show the head only. There has hitherto been some question as to the identity of certain stone carvings, similar to that on Stela B from Copan, of which a portion is shown in Pl. 25, fig. 8. This has even been interpreted as the trunk of an elephant or a mastodon, but is unquestionably a macaw's beak. In addition to the ornamental crosshatching on the beak, which is also seen on the glyph from the same stela (Pl. 25, fig. 5), there is an ornamental scroll beneath the eye which likewise is crosshatched and surrounded by a ring of subcircular marks that continue to the base of the beak. The nostril is the large oval marking directly in front of the eye.