A recurved staff, which is held in the hand of a deity in the B. N. MS. is designated in the text as a _xonoquitl_ (fig. 16, no. 3). Amongst the insignia of the “gods,” sent as presents by Montezuma to Cortés upon his landing at Vera Cruz, were three such recurved “sceptres,” the descriptions of which I have collated and translated in my paper on the Atlatl or Spear-thrower of the Ancient Mexicans (Peabody Museum Papers, vol. 1, no. 3, Cambridge, 1891, p. 22). In this work I presented my reasons for concluding that these recurved sceptres were ceremonial forms of the atlatl. I now perceive that they were endowed with deeper significance and meaning. The Nahuatl text of Sahagun’s Laurentian MS. of the Historia de la Conquista (lib. XII, chap. IV) records the name of one of these staffs as “hecaxonecuilli,” literally “the curved or bent over, air or wind,” and describes it as made of “bent or curved wood, inlaid with stars formed of white jade=chalchihuite.” This passage authorizes the conclusion that four representations in the B. N. MS. of black recurved sceptres, exhibiting a series of white dots, are also heca-xonoquitl, inlaid with stars, and that all of these are none other but conventional representations of the constellation Xonecuilli, the Ursa Minor. In each case the deity, carrying the star-image, also displays the ecacozcatl the “jewel of the wind,” the well-known symbol of the wind-god. In one of these pictures (p. 50) he not only bears in his hand the star-image, but also exhibits a star-group on his head-dress, consisting of a central-star, on a dark ground, surrounded by a blue ring. Attached to this against a dark ground, six other stars are depicted, making seven in all. In connection with this star-group it is interesting to note that the hieroglyph, designated by Fra Diego de Landa as “the character with which the Mayas began their count of days or calendar and named Hun-Imix,” furnishes a case of an identical though inverted group (Relacion de las Cosas de Yucatan, ed. B. de Bourbourg, p. 237). Enclosed in a black ring, the glyph displays, above, a large black dot with six smaller ones grouped in a semicircle about it, and below, four perpendicular bars. Subject to correction, I am inclined to interpret this glyph as a hieratic sign for the constellation Ursa Minor and its four movements, and to consider it as furnishing a valuable proof of the origin of the Maya Calendar. The seemingly inappropriate procedure of figuring shining stars by black dots actually furnishes the strongest proof that a star group is thus represented; for, in the Maya language, “ek” is a homonym for star and black, and a black spot was, in consequence, the most expressive sign for a star. This fact affords a valuable explanation of the reason why the ocelot, whose skin is spotted with black, was employed as the figure of the nocturnal sky, and clearly proves that the Mexicans adopted this symbol and its meaning from the Mayas.