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
               Boa scytale Linnaeus, 1758
               Boa canina Linnaeus, 1758 see Corallus caninus (Linnaeus, 1758)
               Boa constrictor Linnaeus, 1758 - boa constrictor
               Boa murina Linnaeus, 1758 see Eunectes murinus (Linnaeus, 1758)
               Boa cenchria Linnaeus, 1758 see Epicrates cenchria (Linnaeus, 1758)
               Boa orophias Linnaeus, 1758 see Constrictor orophias (Linnaeus, 1758)
               Boa enydris Linnaeus, 1758
               Boa hortulana Linnaeus, 1758 see Corallus hortulanus (Linnaeus, 1758)
               Boa hipnale Linnaeus, 1758