Coyol.—Exact position unknown; according to Smith and Taylor (1950: 10), Coyol is "between San Antonio and Las Cruces."
Donají.—Lat. 17° 13'; long. 95° 02'; elev. 90 m. A village at Km. 155 on the Trans-isthmian Highway; rainforest [29].
Escurano.—Lat. 16° 25'; long. 95° 27'; elev. 500 m. A ranch about 25 kilometers west-northwest of Tehuantepec; arid scrub forest [51].
Guichicovi, San Juan.—Lat. 16° 58'; long. 95° 06'; elev. 250 m. A village on the north slopes of the isthmus, 12 kilometers north-northwest of Matías Romero; cleared hardwood forest and coffee plantations [33].
Huilotepec.—Lat. 16° 14'; long. 95° 09'; elev. 30 m. A small village on the Río Tehuantepec, 13 kilometers south-southeast of Tehuantepec; open arid scrub forest [69].
Ixtepec.—Lat. 16° 34'; long. 95° 06'; elev. 60 m. A town and railroad junction on the northwestern edge of the Plains of Tehuantepec; arid scrub forest [45].
Juchitán.—Lat. 16° 26'; long. 95° 02'; elev. 15 m. A town on the Plains of Tehuantepec, 22 kilometers by road east-northeast of Tehuantepec; arid scrub forest [50].
Limón.—Lat. 16° 20'; long. 95° 29'; elev. 600 m. A former agrarian colony and now a small ranch about 27 kilometers west of Tehuantepec; arid scrub forest [60].
Matías Romero.—Lat. 16° 53'; long. 95° 02'; elev. 200 m. A town on the Trans-isthmian Highway and railroad in the hills near the crest of the isthmus; broadleaf hardwood forest and open pine-oak forest [36].
Mixtequilla.—Lat. 16° 24'; long. 95° 18'; elev. 40 m. A village on the Río Tehuantepec, northwest of Tehuantepec; dense scrub forest [57].