Misyar marriage is a new name of a marriage with no condition of living together.
Urfi marriage is a marriage by agreement of both man and woman but with out registration in the government or religious authorities.
These types of marriage has come up among many Sunni brothers and sisters because of their denial of Mut'a marriage which is mentioned in Quran (4:24) and in authentic Hadeeths in Bukhari and Muslim and all main books of Hadeeth.
We, the followers of Ahlul Bayt (AS) do not need such types of marriages as we have the real types of marriage i.e. permanent marriage and temporary marriage which meet all the needs of human beings and save them from falling in sinful acts.