13 



SAVAGE, Jay M. 1960. A revision of the Ecuadorian snakes of the 



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 SEXTON, Owen J. see TEST, F. H. 1966. 

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TEST, Frederick, Owen J. SEXTON and Harold HEATWOLE. 1966 Reptiles 

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TINKLE Donald W. 1967. The life and Demography of the Side- 

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CONTRIBUTIONS FROM THE LABORATORY OF VERTEBRATE BIOLOGY 



STUART, L. C. 1950. A geographic study of the herpetofauna of Alta 

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 1951. The herpetofauna of the Guatemalan Plateau, with 



h^Ski'-^^. ""^ .f"^'"''^ ^° ^^^ distribution on the southwestern 

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1954. A description of a subhumid corridor across northern 

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i^^^;:«"?'^t^°!^'''^^ °^ ^^^ southastern highlands of Guatemala, 

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1958. A study of the herpetofauna of the Uaxactun- 

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