[Native Mexican.] The orbicular horned lizard, Phrynosoma orbiculare, incorrectly called the horned frog or toad.
[1615. F. Hernandez, Cuatro Libr. Naturaleza, 188. Del animal que llaman tapayaxin y los Españoles camaleon.
1693. Ray. Syn. Quad., 263.]
1753. Chambers, Cycl. Suppl., Tapayaxin,… a very remarkable species of lizard, called by Hernandez the lacertus orbicularis.
1858. Baird, Cycl. Nat. Sci., s.v. Agamidæ, The Tapayaxin, Agama orbicularis.
