Masticophis mentovarius DUMÉRIL, BIBRON & DUMÉRIL 1854
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| A brief review of the snakes of Costa Rica E H Taylor (1951) University of Kansas Science Bulletin 34: 3-188 | |
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| Catalogue of the Neotropical Squamata. Part I. Snakes James A Peters and Braulio Orejas-Miranda (1970) Bulletin United States National Museum 297: 1-347 | |
| The coachwhip snake Masticophis flagellum (Shaw): taxonomy and distribution Larry David Wilson (1971) Tulane Studies in Zoology and Botany 16(2): 31-99 | |
| The sangamon interglacial vertebrate fauna from Rancho la Brisca, Sonora, Mexico Thomas R Van Devender, Amadeo M Rea and Michael L Smith (1985) Transactions of the San Diego Society of Natural History 21: 23-55 |