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The Amphibians and Reptiles of Michoacán, México

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Neotropical Hylid Frogs, Genus Smilisca

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A Taxonomic Study of the Middle American Snake, Pituophis deppei

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A Synopsis of Neotropical Hylid Frogs, Genus Osteocephalus

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Systematic Status of the Colubrid Snake, Leptodeira discolor Gunther

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Middle American Frogs of the Hyla microcephala Group

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The Genera of Phyllomedusine Frogs (Anura Hylidae)

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A Review of the Frogs of the Hyla bistincta Group

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Amphibians and Reptiles of the Rainforests of Southern El Peten, Guatemala

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A New Subspecies of Lizard, Cnemidophorus sacki, from Michoacan, Mexico

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A Review of the Middle American Tree Frogs of the Genus Ptychohyla