Holotype.—No. 34670, Cot, south slope of Volcán Irazú, Cartago Province, Costa Rica; Edward H. Taylor; July 2, 1952.
Geophis aquilonaris Legler, Univ. Kansas Publ. Mus. Nat. Hist., 11:329, figs. 1-2, January 28, 1959.
Holotype.—No. 44265, 23 miles south and 1.5 miles east of Creel, Chihuahua, México; Ronald H. Pine; July 23, 1957.
Paratype.—No. 44266, data same as on holotype.
Geophis bakeri Taylor, Univ. Kansas Sci. Bull., 36:689, July 15, 1954.
Holotype.—No. 31983, Isla Bonita, Heredia Province, Costa Rica; Edward H. Taylor; July 19, 1952.
Paratypes.—No. 30940, Pacayas, Cartago Province, Costa Rica; Edward H. Taylor; August 6, 1951. Nos. 31982, 31984, data same as on holotype.
Geophis zeledoni Taylor, Univ. Kansas Sci. Bull., 36:693, fig. 4, July 15, 1954.
Holotype.—No. 31992, Finca Zeledon, between Volcán Barba and Volcán Poás, Heredia Province (?), Costa Rica; Edward H. Taylor; July 24, 1952.
Paratype.—No. 31951, data same as on holotype.