acrochordidae africa alethinophidia americas aniliidae anomalepididae anomochilidae arabian peninsula asia asphyxia atractaspididae biological classification boinae bolyeriidae brazil canada caribbean central africa central america central asia charles lucien bonaparte chordate constriction cylindrophiidae east africa elapidae erycinae etymology eunectes murinus europe fauna fiji genus giant anaconda india integrated taxonomic information system john edward gray leptotyphlopidae list of serpentes families list of boine species and subspecies list of erycine species and subspecies list of snakes loxocemidae madagascar maluku islands mammal marsupial mauritius melanesia mexico new guinea new world north africa north america old tupi language old world oviparity ovoviviparity pythonidae samoa scolecophidia snake solomon islands south america species squamata sri lanka tapir tropidophiidae type genus typhlopidae united states uropeltidae viperidae wikimedia commons xenopeltidae