headdress. Also present on folio 1v is a glyph of an ant surrounded by dots and, above it, the gloss from which the codex derives its name, which reads "Ascatitla". Emerging from this glyph is a horn, yet another reference to Tlateloco, whose first ruler was the son of the tlatoani of Azcapotzalco ("Place of the Anthill"). Guided by a dark-skinned priest, they cross from Aztlán into the domain of the altepetl of Colhuacan. There the Azteca speak amongst themselves and with Huitzilopochtli. They also meet eight tribes, the Huexotzinca, Chalca, Xochimilca, Cuitlihuaca, Malinalca, Chichimeca, Tepaneca, and the Matlatzinca, who wish to accompany the Azteca on their migration. The latter agree and the nine tribes depart, led by four 'god-bearers' named Chimalma, Apanecatl, Cuauhcoatl, and Tezcacoatl, each carrying a tlaquimilolli. On folio 4v are depicted the first human sacrifices made by the Azteca to Huitzilopochtli, who names them the Mexica and gives them a bow, arrow, bow drill, and basket. The Azteca stop at Coatlicamac for two years on folio 5v. The migration segment ends on folio 6r with the arrival and stay of the Mexica at Coatepec for a period of nine years. On 12r, Copil's heart is sacrificed to Huitzilopochtli and form grows the nopal cactus marking the land Huitzilopochtli promised to the Mexica. The migration segment ends on the next page with the foundation of Tenochtitlan (left; 12v) and Tlatelolco (13r) and the selection of their respective tlatoani. Around Cuacuapitzauac, tlatoani of Tlateloco, are five figures that include his father, Tezozomoc, and other representatives of Tepanec ancestry. The two foundation scenes are separated by six men fishing and hunting in Lake Texcoco. Below the boats is a golden disk flanked by two hands. Imperial segment The structure of the Imperial segment is similar to contemporary Aztec codices such as the Aubin and Mexicanus codices, but especially the Mendoza Codex. The deeds of the tlatoque of Tenochtitlan are recorded in a string of events, running left to right, without any dates. This segment is not complete, as evidenced by the lack of dating and the unfinished state of the tlatoque portraits. Three glosses, the last in the codex, appear on folios 13v to 15r to elucidate some matters of Tepanec history, such as the coronation and death of Maxtla of Azcapotzalco. Most of the spreads end with the mummy of their respective tlatoani. The segment begins on folio