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Sequestration of Defensive Toxins by the Asian Snake Rhabdophis tigrinus: Effects of Local Prey Availability and Maternal Diet (with Deborah A. Hutchinson, Akira Mori, Gordon M. Burghardt, Cathy Nguyen, Jerrold Meinwald, and Frank C. Schroeder), Sequestration of Defensive Toxins by the Asian Snake Rhabdophis tigrinus: Effects of Local Prey Availability and Maternal Diet (2012)
 

Investigations of Defensive Steroid Sequestration by the Asian Snake Rhabdophis Tigrinus (with Deborah A. Hutchinson, Akira Mori, Gordan M. Burghardt, Jerrold Meinwald, and Frank C. Schroeder), Chemoecology (2011)
 

Nuchal Glands: A Novel Defensive System in Snakes (with Akira Mori, Gordon M. Burghardt, Kathleen A. Roberts, Deborah A. Hutchinson, and Richard C. Goris), Chemoecology (2011)
 

Use of Coconut as an Oviposition Site By a Neotropical Harvestmen (Opilinoes, Cranaidae) (with Victor R. Townsend, Jr.; Daniel N. Proud; and Merry V. Marshall), Living World (2011)
 

A Comparison of Adrenal Glands in Toad Eating and Non-Toad Eating Snakes (with Shabnam Mohammadi and Krista McCoy), A Comparison of Adrenal Glands in Toad Eating and Non-Toad Eating Snakes (2010)
 

Chapter 6, Appendix B. Collection and Preservation of Reptilian Embryos (with William A. Velhagen, Jr. and Neil Chernoff), Reptile Biodiversity: Standard Methods for Inventory and Monitoring (2010)
 

Recent Discoveries on the Sequestration of Defensive Steroids by Rhabdophis tigrinus (with Deborah A. Hutchinson, Akira Mori, Gordon Burghardt, Jerrold Meinwald, and Frank Schroeder), Recent Discoveries on the Sequestration of Defensive Steriods by Rhabdophis tigrinus (2010)
 

A Comparison of Adrenal Glands in Toad-Eating and Nontoad-Eating Snakes (with Shabnam Mohammadi and Krista McCoy), A Comparison of Adrenal Glands in Toad-Eating and Nontoad-Eating Snakes (2009)
 

Effect of a Large Scale Natural Disturbance on the Movements and Behaviors of Crotalus horridus in Southeastern Virginia (with Scott Goetz and Christopher Petersen), Effect of a Large Scale Natural Disturbance on the Movements and Behaviors of Crotalus horridus in Southeastern Virginia (2009)
 

Chemical Aspects of Dietary Toxin Sequestration in the Asian Snake Rhabdophis tigrinus (with Deborah A. Hutchinson, Akira Mori, Jerrold Meinwald, and Frank C. Schroeder), Chemical Aspects of Dietary Toxin Sequestration in the Asian Snake Rhabdophis tigrinus (2008)
 

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Maternal Provisioning of Sequestered Defensive Steriods by the Asian Snake Rhabdophis Tigrinus (with Deborah A. Hutchinson, Akira Mori, Jerrold Meinwald, and Frank C. Schroeder), Chemoecology (2008)
 

Sequestered Defensive Compounds in Tetrapod Vertebrates (with Akira Mori and Deborah A. Hutchinson), Sequestered Defensive Compounds in Tetrapod Vertebrates (2008)
 

Sequestered Defensive Toxins in Tetrapod Vertebrates: Principles, Patterns, and Prospects for Future Studies (with Akira Mori and Deborah A. Hutchinson), Sequestered Defensive Toxins in Tetrapod Vertebrates: Principles, Patterns, and Prospects for Future Studies (2008)
 

Tail Morphology in the Western Diamond-Backed Rattlesnake, Crotalus Atrox (with Brad R. Moon), Journal of Morphology (2008)
 

Variation in Bufadienolides-Based Chemical Defenses of the Natricine Snake Rhabdophis Tigrinus, in Japan (with Ralph Saporito, Akira Mori, Deborah A. Hutchinson, Jerrold Meinwald, and Frank C. Schroeder), Variation in Bufadienolides-Based Chemical Defenses of the Natricine Snake Rhabdophis Tigrinus, in Japan (2008)
 

Dietary Sequestration of Defensive Steroids in Nuchal Glands of the Asian Snake Rhabdophis Tigrinus (with Deborah A. Hutchinson, Akira Mori, Gordon M. Burghardt, Xiaogang Wu, Jerrold Meinwald, and Frank C. Schroeder), National Academy of Sciences (2007)
 

Hard Times for a Suburban Viper: The Canebrake Rattlesnake in Virginia, Hard Times for a Suburban Viper: The Canebrake Rattlesnake in Virginia (2007)
 

How to Get Along With Toxic Prey? Possible Costs of Eating Toads in Snakes That Use Toad Toxins in Their Own Defense (with Akira Mori, Deborah A. Hutchinson, and Gordon M. Burghardt), How to Get Along With Toxic Prey? Possible Costs of Eating Toads in Snakes That Use Toad Toxins in Their Own Defense (2007)
 

How to Get Along With Toxic Prey? Possilbe Costs of Eating Toads in Snakes That Use Toad Toxins in Their Own Defense (with Akira Mori, Deborah A. Hutchinson, and Gordon M. Burghardt), How to Get Along With Toxic Prey? Possilbe Costs of Eating Toads in Snakes That Use Toad Toxins in Their Own Defense (2007)
 

Natural History Note: Sibon Longifrenis (Drab Snaileater) (with Chad E. Montgomery, Julie M. Ray, Edgardo J. Griffith Rodriguez, Heidi L. Ross, and Karen R. Lips), Diet. Herpetological Review (2007)
 

NEPARC Annual Symposium, NEPARC Annual Symposium (2007)
 

Persistence and Provisioning of Bufonid Toxins in the Asian Snake Rhabdophis tigrinus (Colubridae: Natricinae) (with Deborah A. Hutchinson, Akira Mori, Jerrold Meinwald, and Frank C. Schroeder), Persistence and Provisioning of Bufonid Toxins in the Asian Snake Rhabdophis tigrinus (Colubridae: Natricinae) (2007)
 

Cardiac Response to Bufonid Prey in Rhabdophis tigrinus (Colubridae), A Snake that Sequesters Dietary Toxins (with Deborah A. Hutchinson, Akira Mori, Frank Schroeder, and Jerrold Meinwald), Cardiac Response to Bufonid Prey in Rhabdophis tigrinus (Colubridae), A Snake that Sequesters Dietary Toxins (2006)
 

Chemical Defense in the Japanese Yamakagashi: Do Snakes Use Prey Toxins for Their Own Defense?, Chemical Defense in the Japanese Yamakagashi: Do Snakes Use Prey Toxins for Their Own Defense? (2006)
 

Geographic Variation in the Morphology of Crotalus Horridus (Serpentes: Viperidae) (with John Allsteadt, Christopher E. Petersen, and Dayanand N. Naik), Herpetological Monographs (2006)
 

New Directions in Snake Biology, New Directions in Snake Biology (2006)
 

Sequestration of Dietary Toxins by Rhabdophis tigrinus: Recent Chemical and Physiological Studies (with Deborah A. Hutchinson, Akira Mori, Gordon M. Burghardt, Jerrold Meinwald, and Frank Schroeder), Sequestration of Dietary Toxins by Rhabdophis tigrinus: Recent Chemical and Physiological Studies (2006)
 

Chemical Evidence for Sequestration of Defensive Toxins in the Asian Snake Rhabdophis tigrinus (Colubridae: Natricinae) (with Deborah A. Hutchinson, Frank C. Schroeder, Akira Mori, Jerrold Meinwald, and Gordon M. Burghardt), Chemical Evidence for Sequestration of Defensive Toxins in the Asian Snake Rhabdophis tigrinus (Colubridae: Natricinae) (2005)
 

Dietary Toxin Sequestration in Two Populations of a Toad-Eating Snake, Rhabdophis tigrinus (with Deborah A. Hutchinson, Frank C. Schroeder, Akira Mori, Jerrold Meinwald, and Gordon M. Burghardt), Integrative and Comparative Biol. (2005)
 

Mechanical Properties of the Integument of the Common Gartersnake, Thamnophis Sirtalis (Serpentes: Colubridae) (with Gabriel Rivera and Jeffrey A. Hinkley), Journal of Experimental Biology (2005)
 

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North American Watersnakes: A Natural History, Quarterly Review of Biology (2005)
 

Dermal Characteristics, Scale Row Organization, and the Origin of Macrostomy in Snakes (with Victor R. Townsend, Jr.; Deborah A. Hutchinson; and Akira Mori), J. Morph. (2004)
 

Feeding Ecology of Larval Ambystoma Mabeei (with Michael W. McCoy), Southeastern Naturalist (2004)
 

Preliminary Evidence of Dietary Toxin Sequestration by Rhabdophis Tigrinus (with Deborah A. Hutchinson and Akira Mori), Preliminary Evidence of Dietary Toxin Sequestration by Rhabdophis Tigrinus (2004)
 

The Integument of the Common Gartersnake (Thamnophis sirtalis): Mechanical Properties and the role of Skin in Feeding (with Gabriel Rivera and Jeffrey A. Hinkley), The Integument of the Common Gartersnake (Thamnophis sirtalis): Mechanical Properties and the role of Skin in Feeding (2004)
 

Vasculature of the Nuchal Glands of Rhabdophis tigrinus (Serpentes: Colubridae): Additional Support for Sequestered Toxins (with Akira Mori), Vasculature of the Nuchal Glands of Rhabdophis tigrinus (Serpentes: Colubridae): Additional Support for Sequestered Toxins (2004)
 

Vasculature of the Paratoid Glands of Four Species of Toads (Bufonidae: Bufo). (with Deborah A. Hutchinson), Journal of Morphology (2004)
 

A Comparative Study of Dermal Morphology in Lepidosaurs (with V. R. Townsend, Jr.; C. E. Thorson; and J. C. Tomasheski), Southeast. Biol. (2003)
 

A Model of Scale Row Organization in Snakes: Integumentary Structure and the Origin of Macrostomy (with Victor R. Townsend, Jr.), A Model of Scale Row Organization in Snakes: Integumentary Structure and the Origin of Macrostomy (2003)
 

Does the Vagus Nerve Play a Role in the Auditory Function of the Swim Bladder in the Nurseryfish, Kurtis gulliver (Perciformes: Kurtidae)? (with Kent E. Carpenter; Victor R. Townsend, Jr.; and Tim M. Berra), Does the Vagus Nerve Play a Role in the Auditory Function of the Swim Bladder in the Nurseryfish, Kurtis gulliver (Perciformes: Kurtidae)? (2003)
 

Establishment of an Embryonic Staging Sequence for the Brown House Snake (Lamprophis fuliginosus) (with Angela R.V. Rivera), Establishment of an Embryonic Staging Sequence for the Brown House Snake (Lamprophis fuliginosus) (2003)
 

Family Colubridae, Grzimek's Animal Life Encyclopedia, Revised Edition (2003)
 

Herpetology, Third Edition (with F. Harvey Pough, Robin M. Andrews, John E. Cadle, Martha L. Crump, and Kentwood D. Wells), Herpetology, Third Edition (2003)
 

Phylogeography of the Timber Rattlesnake (Crotalus Horridus) Based on mtDNA Sequences (with A. M. Clark, P. E. Moler, E. E. Possardt, W. S. Brown, and B. W. Bowen), Journal of Herpetology (2003)
 

The Effects of Skin Compliance and Body Shape on Macrophagous Feeding in the Common Gartersnake (Thamnophis sirtalis): A Simple Model (with Gabriel Rivera), The Effects of Skin Compliance and Body Shape on Macrophagous Feeding in the Common Gartersnake (Thamnophis sirtalis): A Simple Model (2003)
 

The Morphological Basis of Variation in Skin Extensibility in Squamate Reptiles (with J. C. Tomacheski and V. R. Townsend, Jr.), Southeast. Biol. (2003)
 

Vasculature of the Parotoid Glands of Toads (Bufonidae: Bufo) (with Deborah A. Hutchinson), Vasculature of the Parotoid Glands of Toads (Bufonidae: Bufo) (2003)
 

A Comparative Study of Dermal Morphology in Boid and Pythonid Snakes (with Troy L. Shell and Victor R. Townsend, Jr.), Southeast. Biol. (2002)
 

A Comparative Study of Dermal Morphology in Boid Snakes (with T. L. Shell and V. R. Townsend, Jr.), Virginia J. Sci. (2002)
 

A Comparative Study of the Integument of Colubrid and Viperid Snakes (with V. R. Townsend, Jr.), Virginia J. Sci. (2002)
 

Comparative Morphology of the Integument of Vipers (Squamata: Viperidae) (with Sarah W. Simms; Troy L. Shell; and Victor R. Townsend, Jr.), Southeast. Biol. (2002)
 

Dermal Correlates of Skin Stretching in Macrostomate Snakes (with Victor R. Townsend, Jr.), Dermal Correlates of Skin Stretching in Macrostomate Snakes (2002)
 

Establishment of an Embryonic Staging Sequence for Lamprophis fuliginosus (with Angela R. Rivera), Establishment of an Embryonic Staging Sequence for Lamprophis fuliginosus (2002)
 

Geographic Distribution: Ramphotyphlops Braminus (with Robert T. Belcher and Scott Ewers), Herpetolological Review (2002)
 

Geographic Variation in the Morphology of Crotalus horridus (Serpentes: Viperidae) (with John R. Allsteadt and Christopher E. Petersen), Geographic Variation in the Morphology of Crotalus horridus (Serpentes: Viperidae) (2002)
 

Mechanical Properties of the Integument of the Common Garter Snake (with Gabriel Rivera and Jeffrey A. Hinkley), Integrative and Comparative Biol. (2002)
 

Organization of the Elastic Fibers in the Vocal Sac Musculature of Neotropical Frogs (with A. Stanley Rand and Barbara A. Savitzky), Organization of the Elastic Fibers in the Vocal Sac Musculature of Neotropical Frogs (2002)
 

Regional Variation in Mechanical Properties of the Integument of Thamnophis sirtalis (Serpentes) (with Gabriel Rivera and Jeffrey A. Hinkley), Regional Variation in Mechanical Properties of the Integument of Thamnophis sirtalis (Serpentes) (2002)
 

Tensile Properties of Hydrogels and of Snake Skin (with Jeffrey A. Hinkley, Gabriel Rivera, and Stevin H. Gehrke), Tensile Properties of Hydrogels and of Snake Skin (2002)
 

Vasculature of the Paratoid Glands of Bufo terrestris and B. Valliceps (with Deborah A. Hutchinson), Virginia J. Sci. (2002)
 

Vasculature of the Parotoid Glands of Bufo terrestris and B. Valliceps (with Deborah A. Hutchinson), Vasculature of the Paratoid Glands of Bufo Terrestris and B. Valliceps (2002)
 

Herpetology, Second Edition (with F. Harvey Pough, Robin M. Andrews, John E. Cadle, Martha L. Crump, and Kentwood D. Wells), Herpetology, Second Edition (2001)
 

Vasculature of the Lepidosaur Nasal Cavity: Do Iguanas Have a Bloody Nose? (with Susan J. Rehorek and Lawrence M. Witmer), Vasculature of the Lepidosaur Nasal Cavity: Do Iguanas Have a Bloody Nose? (2001)
 

Geographic Distribution: Deirochelys Reticularia Reticularia (with Michael W. McCoy and Donald J. Schwab), Herpetolological Review (2000)
 

Organization of Elastic Fibers in the Vocal Sac of Frogs (with Kathleen A. Roberts and A. Stanley Rand), Organization of Elastic Fibers in the Vocal Sac of Frogs (2000)
 

PARC Symposium, PARC Symposium (2000)
 

A Comparison of the Genetic Structure of Mid-Atlantic Populations of the Timber Rattlesnake (Crotalus horridus) (with Maria V. Gonzalez, Howard K. Reinert, and Lauretta M. Bushar), A Comparison of the Genetic Structure of Mid-Atlantic Populations of the Timber Rattlesnake (Crotalus horridus) (1999)
 

Cephalic Vasculature of the Green Iguana (Iguana iguana) and Tokay Gecko (Gecko gekko) (with Susan J. Rehorek, Lawrence M. Witmer, and Scott D. Sampson), Cephalic Vasculature of the Green Iguana (Iguana iguana) and Tokay Gecko (Gecko gekko) (1999)
 

Hinged Teeth in the Enigmatic Colubrid, Iguanognathus Werneri (with K. Jackson, G. Underwood, and E. N. Arnold), Copeia (1999)
 

Ultrastructure of the Nuchal Glands of Rhabdophis tigrinus (Serpentes: Colubridae) (with Kathleen A. Roberts, Keith A. Carson, and Akira Mori), Ultrastructure of the Nuchal Glands of Rhabdophis tigrinus (Serpentes: Colubridae) (1999)
 

Evolution of Embyonic Growth in Thamnophiine Snakes (with William A. Velhagen, Jr.), Copeia (1998)
 

Herpetology (with F. Harvey Pough, Robin M. Andrews, John E. Cadle, Martha L. Crump, and Kentwood D. Wells), Herpetology (1998)
 

Movement Patterns and Habitat Use of the Canebrake Rattlesnake (Crotalus horridus atricaudatus) on a Naval Facility in Southeastern Virginia (with Christopher E. Petersen), Movement Patterns and Habitat Use of the Canebrake Rattlesnake (Crotalus horridus atricaudatus) on a Naval Facility in Southeastern Virginia (1998)
 

Support for a Mesodermal Origin of the Nuchal Glands of Rhabdophis tigrinus (Serpentes: Colubridae) (with W. A. Velhagen, Jr.; A. Mori; and K. A. Roberts), Support for a Mesodermal Origin of the Nuchal Glands of Rhabdophis tigrinus (Serpentes: Colubridae) (1998)
 

Collection of Reptilian Embryos: Methods, Standards, and Ethics (with William A. Velhagen, Jr.), Collection of Reptilian Embryos: Methods, Standards, and Ethics (1997)
 

Movements of Canebrake Rattlesnakes (Crotalus horridus) at Two Sites in Southeastern Virginia, USA (with Christopher E. Petersen and Barbara A. Savitzky), Movements of Canebrake Rattlesnakes (Crotalus horridus) at Two Sites in Southeastern Virginia, USA (1997)
 

The Reptiles of Virginia, Copeia (1997)
 

Workshop on Preservation and Curation of Early Life History Stages of Fishes, Amphibians, Reptiles (with William A. Velhagen, Jr.), Workshop on Preservation and Curation of Early Life History Stages of Fishes, Amphibians, Reptiles (1997)
 

A Neotropical Natural History, A Neotropical Natural History (1996)
 

Eastern Rattlesnakes: Biology and Conservation of Crotalus horridus and Crotalus adamanteus (with Barbara A. Savitzky), Eastern Rattlesnakes: Biology and Conservation of Crotalus horridus and Crotalus adamanteus (1996)
 

Homology and Architecture of the Caudal Muscels of Crotalus (Serpentes: Crotalinae), Homology and Architecture of the Caudal Muscels of Crotalus (Serpentes: Crotalinae) (1996)
 

An Osteological Synapomorphy Uniting a Lineage of North American Colubrid Snakes, An Osteologicla Synapomorphy Uniting a Lineage of North American Colubrid Snakes (1995)
 

Movement Patterns and Habitat Associations of Crotalus horridus in Southeastern Virginia (with Barbara A. Savitzky), Movement Patterns and Habitat Associations of Crotalus horridus in Southeastern Virginia (1995)
 

Adaptations of Marine Reptiles, Adaptations of Marine Reptiles (1994)
 

Movement Patterns and Habitat Association of Copperhead Snakes (Agkistrodon contortrix) in Southeastern Virginia (with Christopher E. Petersen and Barbara A. Savitzky), Movement Patterns and Habitat Association of Copperhead Snakes (Agkistrodon contortrix) in Southeastern Virginia (1994)
 

Adaptations of the Crab-Eating Snake, Fordonia leucobalia (homalopsinae), to Estuarine Life, Adaptations of the Crab-Eating Snake, Fordonia leucobalia (homalopsinae), to Estuarine Life (1993)
 

Geographic Distribution: Regina Rigida (with Kurt A. Buhlmann, Barbara A. Savitzky, and Joseph C. Mitchell), Herpetolological Review (1993)
 

Movement Patterns of the Canebrake Rattlesnake, Crotalus horridus (Viperidae: Crotalinae), In Southeastern Virginia, USA (with Barbara A. Savitzky and Christopher E. Petersen), Movement Patterns of the Canebrake Rattlesnake, Crotalus horridus (Viperidae: Crotalinae), In Southeastern Virginia, USA (1993)
 

Overwintering Ecology of Crotalus horridus (Viperidae: Cortalinae) (with Barbara A. Savitzky and Christopher E. Petersen), Overwintering Ecology of Crotalus horridus (Viperidae: Cortalinae) (1993)
 

Australian Reptiles & Frogs [review], Herpetologica (1992)
 

Embyonic Development of the Maxillary and Prefrontal Bones in Crotaline Snakes (Serpentes: Colubridae), Embyonic Development of the Maxillary and Prefrontal Bones in Crotaline Snakes (Serpentes: Colubridae) (1991)
 

Embryonic Development of the Pit Organs of Boid and Colubrid Snakes, Embryonic Development of the Pit Organs of Boid and Colubrid Snakes (1989)
 

A Muscularized Mandibular Glad in an Asian Mollusc-Eating Snake, A Muscularized Mandibular Glad in an Asian Mollusc-Eating Snake (1988)
 

Embryonic Development of the Pit Organs and Associated Structures in Boid and Crotaline Snakes, Embryonic Development of the Pit Organs and Associated Structures in Boid and Crotaline Snakes (1987)
 

Embryonic Development of the Trigeminal Nerve in Infrared Senstitive Snakes, Embryonic Development of the Trigeminal Nerve in Infrared Senstitive Snakes (1987)
 

Snakes of the World [review], Copeia (1987)
 

The Role of Development in the Evolution of Ophidian Pit Organs: Hypothesized Mechanisms, The Role of Development in the Evolution of Ophidian Pit Organs: Hypothesized Mechanisms (1985)
 

Vertebral Protrusion in Snakes: Evidence for a Novel Defensive Mechanism, Vertebral Protrusion in Snakes: Evidence for a Novel Defensive Mechanism (1983)
 

Adaptive Radiation Within a Highly Specialized System: The Diversity of Feeding Mechanisms of Snakes, Adaptive Radiation Within a Highly Specialized System: The Diversity of Feeding Mechanisms of Snakes (1981)
 

The Feeding Mechanism of Fordonia, a Crab-Eating Snake, The Feeding Mechanism of Fordonia, a Crab-Eating Snake (1981)
 

Hinged Teeth: An Unrecognized Feeding Specialization in Snakes, Hinged Teeth: An Unrecognized Feeding Specialization in Snakes (1978)
 

The Female Reproductive System of Tantilla (Serpentes: Colubridae) (with Hobart M. Smith and James D. Fawcett), J. Colo.-Why. Acad. Sci. (1977)
 

The Origin of the New World Proteroglyphous Snakes, The Origin of the New World Proteroglyphous Snakes (1977)
 

Another Cryptic Associate of the Lizard Sceloporus Formosus in Guerrero, Mexico (with Hobart M. Smith), Journal of Herpetology (1974)
 

Field Observations on a Population of the Sand Lizard Uma Exsul (with Martha L. Commins), Journal of Herpetology (1973)
 

Comment on Dendrobates (with Hector S. Cuellar, James D. Fawcett, John W. Ferner, Paul Maslin, Jonathan C. Oldham, Jan J. Roth, and Hobart M. Smith), Bulletin of Zoological Nomenclature (1972)
 

Cryptic Species Associations in Lizards of Southern Mexico (with Hobart M. Smith), J. Colo.-Why. Acad. Sci. (1972)
 

Explosive Sympatric Radiation of Lizard Species of the Genus Anolis in Mexico (with Hobart M. Smith), J. Colo.-Why. Acad. Sci. (1972)
 

Oviductal Anatomy and Sperm Storage in Tantilla Nigriceps, T. Atriceps, and T. Gracilis (Serpentes: Colubridae) (with James D. Fawcett and Hobart M. Smith), J. Colo.-Why. Acad. Sci. (1972)
 

A New Snake From Mexico of the Taeniata Group of Tantilla (with Hobart M. Smith), Journal of Herpetology (1971)
 

Concerning the Taeniata Group of the Genus Tantilla (Serpentes: Colubridae) (with Hobart M. Smith), Herpetol. Rev. (1971)
 

Tantilla Gracilis, A Snake New to the Fauna of Mexico (with Joseph T. Collins), Journal of Herpetology (1971)
 

The Ground Snake Sonora Episcopa Episcopa in Coahuila, Mexico (with Joseph T. Collins), Journal of Herpetology (1971)
 

Three New Species of Tantilla (Serpentes: Colubridae) From Southern Mexico (with Hobart M. Smith), J. Colo.-Why. Acad. Sci. (1970)