Imperium naturæ C. Linnaeus, 1758 - nature
   Mundus Plinius - physical world
     naturalia - natural bodies
       Regnum Animale C. Linnaeus, 1758 - animal kingdom see Kingdom Animalia Linnaeus, 1758
         Class Amphibia Linnaeus, 1758 - amphibians see Class Amphibia Gray, 1825
           Order Serpentes Linnaeus, 1758 see Suborder Serpentes Linnaeus, 1758
             Genus Boa Linnaeus, 1758
               276 Boa scytale Linnaeus, 1758
               280 Boa canina Linnaeus, 1758 see Corallus caninus (Linnaeus, 1758)
               299 Boa hipnale Linnaeus, 1758
               300 Boa constrictor Linnaeus, 1758 - boa constrictor
               319 Boa murina Linnaeus, 1758 see Eunectes murinus (Linnaeus, 1758)
               322 Boa cenchria Linnaeus, 1758 see Epicrates cenchria (Linnaeus, 1758)
               345 Boa orophias Linnaeus, 1758 see Constrictor orophias (Linnaeus, 1758)
               375 Boa enydris Linnaeus, 1758
               418 Boa hortulana Linnaeus, 1758 see Corallus hortulanus (Linnaeus, 1758)