▁listed ▁contrib uting ▁properties ▁to ▁historic ▁districts ▁on ▁the ▁National ▁Register ▁in ▁North ▁Carolina ▁Category : H istor ic ▁district ▁contrib uting ▁properties ▁in ▁North ▁Carolina <0x0A> </s> ▁Mel ong ena ▁is ▁a ▁genus ▁of ▁sea ▁sn ails , ▁marine ▁g ast rop od ▁m oll us ks ▁in ▁the ▁family ▁Mel ong en idae , ▁the ▁crown ▁con ches ▁and ▁their ▁al lies . ▁ ▁Species ▁Species ▁within ▁the ▁genus ▁Mel ong ena ▁include : ▁ ▁Mel ong ena ▁b icol or ▁( S ay , ▁ 1 8 2 6 ) ▁ ▁Mel ong ena ▁bis pin osa ▁( Ph ili ppi , ▁ 1 8 4 4 ) ▁ ▁Mel ong ena ▁cal iforn ica ▁Anderson ▁& ▁Martin , ▁ 1 9 1 4 ▁ ▁Mel ong ena ▁cor ona ▁( G mel in , ▁ 1 7 9 1 ) ▁- ▁crown ▁con ch ▁- ▁syn onym : ▁ ▁Mel ong ena ▁sub cor on ata ▁ ▁Mel ong ena ▁mel ong ena ▁( Lin na eus , ▁ 1 7 5 8 ) ▁- ▁type ▁species ▁ ▁Mel ong ena ▁pat ula ▁ ▁( Lin na eus , ▁ 1 7 5 8 ) ▁▁ ▁Mel ong ena ▁spr uce c reek ensis ▁T ucker , ▁ 1 9 9 4 ▁ ▁† ▁Mel ong ena ▁wood ward i ▁( R ox o , ▁ 1 9 2 4 ) ▁- ▁from ▁Mi oc ene ▁of ▁the ▁P eb as ▁Form ation ▁ ▁syn onym s : ▁