▁Y uc atan , ▁and ▁one ▁in ▁Central ▁America ▁and ▁the ▁Car ib bean . ▁A ▁fourth ▁species ▁is ▁found ▁on ▁the ▁tropical ▁eastern ▁Pacific ▁coast . ▁ ▁Hab itat ▁Species ▁within ▁this ▁genus ▁live ▁in ▁the ▁tropical ▁inter tid al ▁zone , ▁in ▁mud dy ▁areas ▁such ▁as ▁under ▁mang ro ve ▁trees . ▁ ▁Life ▁hab its ▁Mel ong ena ▁sn ails ▁are ▁car n iv orous , ▁primarily ▁pre ying ▁on ▁small ▁b ival ves ▁( cl ams , ▁muss els ▁and ▁o yst ers ). ▁They ▁will ▁also ▁feed ▁on ▁other ▁species ▁of ▁sn ails ▁and ▁have ▁been ▁known ▁to ▁be ▁can n ib al istic . ▁ ▁References ▁ ▁Further ▁reading ▁ ▁Abb ott , ▁R . ▁T ucker , ▁ 1 9 8 6 . ▁Se ash ells ▁of ▁North ▁America , ▁St . ▁Martin ' s ▁Press , ▁New ▁York <0x09> ▁ ▁Ke en , ▁A . ▁My ra , ▁ 1 9 7 1 . ▁Sea ▁shell s ▁of ▁tropical ▁west ▁America , ▁Stan ford ▁University ▁Press , ▁Stan ford , ▁California ▁ ▁Anderson , ▁F . M ., ▁and ▁B . ▁Martin , ▁ 1 9 1 4 . ▁" Ne oc ene ▁records ▁in ▁the ▁T emb lor ▁Bas in , ▁California , ▁and ▁Ne oc ene ▁depos its ▁of ▁the ▁San ▁Juan ▁District , ▁San ▁Luis ▁Ob is po ▁County ", ▁ ▁California ▁Academy ▁of ▁Sciences ▁Pro ceed ings , ▁ 4 th ▁series , ▁v . ▁IV , ▁p .  