Sentence:  These three were much alike : <WSD>lined</WSD> snake ( Tropidoclonion ) , one year and nine months ; red-bellied snake ( Storeria ) , two years ; cottonmouth ( Ancistrodon ) , two years . 
Meaning of the word marked with <WSD> tags:  secretive snake of city dumps and parks as well as prairies and open woods; feeds on earthworms; of central United States