Because of the absence of sufficiently open habitat or owing to the presence of competitors, some conspicuous members of sub-humid forests are not present in southern El Petén. Conspicuous absentees are the following:
| Rhinophrynus dorsalis | Ameiva undulata |
| Phrynohyas spilomma | Cnemidophorus angusticeps |
| Triprion petasatus | Conophis lineatus |
| Anolis tropidonotus | Masticophis mentovarius mentovarius |
| Ctenosaura similis |
PLATE 7
Fig. 1. Edge of rainforest along airstrip at Chinajá, El Petén, Guatemala.
Fig. 2. Rainforest at edge of savanna at Toocog, El Petén, Guatemala.
PLATE 8
Interior of rainforest at Chinajá. Notice size of buttresses on large tree (Ceiba pentandra).