In México _Bufo coccifer_ has been collected only in semi-xeric habitats, but to the south, from Guatemala to Costa Rica, it has been found in more upland and humid habitats. Southern specimens are darker than those from the north, a possible correlation with the differences in habitat. These toads probably range throughout the Tepalcatepec Valley, but they are unknown from the coast of Michoacán. Breeding choruses were found after heavy rains on June 24, 1955, and on August 2, 1956. The first was in a muddy ditch; the second was in a flooded grassy field. The call is a high-pitched, but not loud, "whirrr." Males were calling from the edge of the water or from clumps of grass in the water. Clasping pairs were in the water; amplexus is axillary. ~Bufo compactilis compactilis~ Wiegmann _Bufo compactilis_ Wiegmann, Isis von Oken, 26:661, 1833.--México. Type locality restricted to Xochimilco, Distrito Federal, México, by Smith and Taylor (1950a:330). _Bufo compactilis compactilis_, Smith, Herpetologica, 4:7, September 17, 1947. Cuitzeo (2); Emiliano Zapata (20); Jiquilpan (5); La Palma (5); Morelia; Tupátaro. The southwestern terminus of the range of this species is on the Mexican Plateau in Michoacán. All specimens from the state have spotted venters. In living toads the dorsal ground color was gray or grayish tan with olive green spots. The vocal sac was brownish gray; the iris was a bright golden color. On June 11, 1958, many individuals were calling from shallow water in a flooded field at Emiliano Zapata. The call is a slow trill, in which the individual notes are discernible. ~Bufo marinus~ (Linnaeus) _Rana marina_ Linnaeus, Systema naturae, ed. 10, 1:211, 1758.--America. _Bufo horribilis_ Wiegmann, Isis von Oken, 26:654, 1833.--Misantla and Veracruz, Veracruz, México. Taylor and Smith, Proc. U. S. Natl. Mus., 95:551, January 30, 1945. _Bufo angustipes_ Taylor and Smith, Proc. U. S. Natl. Mus., 95:553, January 30, 1945.--La Esperanza, Chiapas, México. Aguililla; Apatzingán (3); Barranca de Bejuco; Capirio; Charapendo; Chichihuas; Coahuayana (2); Coalcomán (7); Cofradía (2); 25 km. S of Cuatro Caminos; El Sabino (10); Huahua, La Playa (13); Ojos de Agua de San Telmo; Ostula; Playa Azul (2); Pómaro (2). This large toad is characteristically found in areas supporting tropical scrub forest to elevations of about 1000 meters. The species is much more abundant than the numbers listed above suggest. In the dry season individuals have been observed in patios, along streams, and by irrigation ditches. In the rainy season the loud, rattling call of the males is heard at night throughout the Tepalcatepec Valley and the coastal lowlands.