Serpentes see Suborder Serpentes Linnaeus, 1758 Alethinophidia Nopcsa, 1923 see Infraorder Alethinophidia Nopcsa, 1923 Caenophidia Hoffstetter, 1939 Colubroidea Oppel, 1811 Family Colubridae Oppel, 1811 - colubrids Subfamily Grayiinae [monotypic]