Subspecies and Distribution. A. g. geoffroyi Kuhl, 1820 — S & SE Nicaragua (coastal region around San Juan del Norte or Martina Bay, probably ranging across the lowlands to the vicinity of Lake Managua and Lake Nicaragua on the Pacific coast); possibly in N Costa Rica. A. g. azuerensis Bole, 1937 — SC Panama, known only from the forested mountains of the W side of the Azuero Peninsula (Veraguas Province) in the vicinity of Ponuga, where it appears to be isolated; it may also occur to the W along the Pacific coastto the Burica Peninsula, near the Panamanian and Costa Rican border. A. g. frontatus Gray, 1842 — N & W Nicaragua and NW Costa Rica. A. g. grisescens Gray, 1866 — S Panama along the Pacific coast in the valley of the Rio Tuyra and SE through the Serrania del Sapo of extreme SE Panama into the Cordillera de Baudo of NW Colombia. A. g. ornatus Gray, 1871 — C & E Costa Rica, and Panama (from Chiriqui Province to the Serrania de San Blas E of the Canal Zone). A. g. vellerosus Gray, 1866 — E & SE Mexico (E San Luis Potosi, Veracruz, Tabasco, E Oaxaca, and Chiapas states), Guatemala (including the highlands), El Salvador, and Honduras (along the N coastto the lowlands of La Mosquitia in Gracias a Dios Department). A. g. yucatanensis Kellogg & Goldman, 1944 — SE Mexico (forests of the Yucatan Peninsula), NE Guatemala, and adjoining parts of Belize; intergrading in S Mexico (Campeche State) and Guatemala with vellerosus. in Atelidae