Notes on the Herpetofauna of Two Mountain Ranges in Mexico (Sierra Fria, Aguascalientes, and Sierra Morones, Zacatecas)

A total of 25 species of reptiles and amphibians is reported from pine-oak woodland on two southern outlier ranges of the Sierra Madre Occidental, the Sierra Fria in Aguascalientes and the Sierra Morones in Zacatecas. Of those 25 species, 20 are known from the Sierra Fria and 17 from the Sierra Morones. Seven species are reported as new records for Aguascalientes or Zacatecas. A discussion of the biogeography of these ranges is included. Comparison is made to the herpetofaunas of the southern Sierra Madre Occidental and the Cordillera Volcanica in Michoacan.