. An ecogeographic analysis of the herpetofauna of the Yucatan Peninsula. Amphibians; Amphibians; Reptiles; Reptiles. 34 MISCELLANEOUS PUBLICATION MUSEUM OF NATURAL HISTORY. Fig. 20.—North peninsular disjuncts. Extra-peninsular distributions are rough approximations. A. Hyla ehraccata. B. Conjtophanes hernandezi. C. Eumeces sumichrasti. D. Sphenomorphus cher- riei. E. Dendrophidion vinitor. F. Scaphiodontophis annidatus. the afBnities of the peninsular foim he with the population on the Pacific ver- sant, then the species represents, in mod- ified form, an example of the Yucatan- West Mexico p
. An ecogeographic analysis of the herpetofauna of the Yucatan Peninsula. Amphibians; Amphibians; Reptiles; Reptiles. 34 MISCELLANEOUS PUBLICATION MUSEUM OF NATURAL HISTORY. Fig. 20.—North peninsular disjuncts. Extra-peninsular distributions are rough approximations. A. Hyla ehraccata. B. Conjtophanes hernandezi. C. Eumeces sumichrasti. D. Sphenomorphus cher- riei. E. Dendrophidion vinitor. F. Scaphiodontophis annidatus. the afBnities of the peninsular foim he with the population on the Pacific ver- sant, then the species represents, in mod- ified form, an example of the Yucatan- West Mexico pattern. The Maya Mountain-Nuclear Central America Pattern.—The Maya Moun- tains of Belize support essentially a low- land fauna. However, two species of frogs known from the vicinity of the Maya Mountains, Rana maculata and Agalychnis moreletii, typically occur in montane situations. They are apparently isolated from the geographically nearest populations of their species in the high- lands of Guatemala and Honduras by unsuitable lowland habitat in the De- partments of El Peten and Izabal, Guatemala. Miscellaneous Patterns.—Two en- demic species of amphibians, Bolito- glossa ijucatana and Eleutherodactylus yucatanensis, are nearly restricted to the north end of the peninsula where they occur in mesic situations such as caves and cenotes. In naming E. yucatanensis. Lynch (1964) acknowledged its close relationship with E. alfredi to the south- west. B. yucatana is one of the three members of the dofleini species group (Wake and Lynch, 1976); the closest liv- ing relative of B. yucatana is perhaps B. schmidti to the southwest (Wake, pers. comm.). The fossil Lepidophyma arizeloglyphus is known only from a Pleistocene cave deposit in the northwest corner of the peninsula (Hatt et al., 1953), far to the north of the modern. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of th
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