Answer:

snakes

AnswerCrossword Clue
SNAKESGrass lurkers
SNAKESUntrustworthy ones
SNAKESNew Zealand lack
SNAKESWhat Indiana Jones feared
SNAKESPlumbing tools
SNAKESMoves sinuously
SNAKESCreatures banished from Ireland by Saint Patrick, in myth
SNAKESTwists and turns
SNAKESInsidious sorts
SNAKESRattler and cobra
SNAKESSlithering hissers
SNAKESTreacherous types
SNAKESCharmer's basketful
SNAKESDevices for clearing pipes
SNAKESSidewinders
SNAKESRacers and rattlers
SNAKESLadders' counterparts
SNAKESMoccasins and racers
SNAKESDoesn't go straight
SNAKESOphiologist's study
SNAKESThey were expelled from Ireland.
SNAKESWhat ophiologists study.
SNAKESMedusa's hair.
SNAKESProgresses in a spiral.
SNAKESHerpetologist's interest.
SNAKESRacers.
SNAKESReptiles.
SNAKESTreacherous persons.
SNAKESGarter and moccasin.
SNAKESMoves windingly.
SNAKESOphidians.
SNAKESWinds one's way.
SNAKESWinds in and out.
SNAKESMoves sinuously.
SNAKESAdders
SNAKESAdders, etc.
SNAKESPlumbers' cables
SNAKESBushmaster and mamba
SNAKESSome are racers
SNAKESKrait and fer-de-lance