Buluc-Ahau, mentioned by Landa, is the name of one of the signs of the Katun given in his figure of the cycle, and, although he uses the word "idol," does not appear to refer to any particular deity. In regard to the names of the first three calendars, Dr Seler remarks as follows: _E_, _ye_ signifies "the edge," "sharpness," "the notch;" _eb_, _ebil_, _ebal_, _yebal_, "a row of notches," "flight of steps," "stairs." In Quiche-Cakchiquel _e_ signifies "the tooth," "the edge;" _ee_ is the plural form in Cakchiquel of the word, as _eeb_ of the Quiche; _euob_ is also a plural form in the Tzental, as I think, from a singular _eu-ee_. The name must denote the same thing in all the languages, i. e., "a row of teeth," "flight of steps"--a signification which harmonizes excellently with many Mexican forms of the character [plate LXVI, 12] as well as with the Meztitlan name of it (_itlan_, "his tooth"). Dr Brinton says that "in Maya _eb_ is the plural of _e_, which means 'points' or 'ends,' like those of pins or thorns, and plainly was intended to designate the broom by reference to its numerous points. From the same idea, rows of teeth received the same name. The Tzental and Quiche names _e_ and _euob_--the latter a plural--were from the same radical and had the same signification." He says the Nahuatl and Zapotec names both signify the brush or broom of twisted twigs, or stiff grass used for cleaning and dusting, and also this grass itself. Thus he brings the names of the five calendars into harmony. This explanation corresponds with that given by Clavigero of the Mexican term, which he says is the name of a certain plant of which brooms were made.