); Maruata (2); Motin
del Oro; Ostula; Playa Azul (3).

This species has been found only on the coast and in the low
Tepalcatepec Valley. In the latter area it is restricted to riparian
situations along the larger streams. The lizard is abundant in the
mangrove swamps bordering the brackish lagoons on the coast. In July,
1955, scores of individuals were seen around Estero Pichi at Playa Azul.
Adults, especially the large males, are exceedingly wary and difficult
to collect. At all localities where they were found, the lizards were
most often seen in dense bushes, where they are well camouflaged.
Individuals of all sizes were observed to run across the surface of the
ponds.

~Iguana iguana rhinolopha~ Wiegmann

_Iguana rhinolopha_ Wiegmann, Herpetologia Mexicana, p. 44,
1834.--Mexico. Type locality restricted to Cordoba,
Veracruz, Mexico, by Smith and Taylor (1950b:72).

_Iguana iguana rhinolopha_, Van Denburgh, Proc. Acad. Nat.
Sci. Philadelphia, 1897:461, January 18, 1898.

Apatzingan (8); Capirio (3); El Cerrito; El Ticuiz (2); La
Placita; La Playa (2); Maruata; Playa Azul; Rio Cachan.

Like the preceding species, this lizard is always found near water. It
does not ascend the foothills of the Sierra de Coalcoman, but in the
Balsas Basin it reaches elevations of 800 meters at La Playa. Large
adults are often seen in the large trees making up the gallery forests
along rivers. From high perches the lizards drop into the water with a
terrific splash. Bright green juveniles were abundant in bushes along
the Rio Tepalcatepec in July, 1955.

~Ctenosaura pectinata~ (Wiegmann)

_Cyclura pectinata_ Wiegmann, Herpetologia Mexicana, p. 42,
1834.--Mexico (by inference). Type locality restricted to
Colima, Colima, Mexico, by Bailey (1928:25).

_Ctenosaura pectinata_, Gray, Catalogue of the lizards...
British Museum, p. 191, 1845.

Apatzingan (27); between Ario de Rosales and La Playa;
Barranca de Bejuco; Capirio (2); Coalcoman (4); El Espinal;
El Sabino (2); El Ticuiz; Jazmin (2); La Huacana; La Placita
(8); La Playa (3); Limoncito; Lombardia; Motin del Oro;
Playa Azul; Rio Cancita, 12 km. E of Apatzingan (2); Rio
Marquez, 10 km. S of Lombardia (2);? Uruapan; Volcan
Jorullo.

_Ctenosaura pectinata_ is a common lowland species that ascends the
slopes of the Sierra de Coalcoman and the Cordillera Volcanica to
elevat