Serpentes see Suborder Serpentes Linnaeus, 1758 Alethinophidia Nopcsa, 1923 see Infraorder Alethinophidia Nopcsa, 1923 Henophidia Hoffstetter, 1939 [paraphyletic] see Parvorder Henophidia Hoffstetter, 1939 Family Xenophidiidae Wallach & Günther, 1998 [monotypic]