Easy call with overpair?

[LoLoTrickyU]

Villain is 31/21/2.3

Full Tilt Poker - No Limit Hold'em Cash Game - $1/$2 Blinds - 6 Players - (LegoPoker Hand History Converter)

SB: $222.85
Hero (BB): $200.00
UTG: $252.25
MP: $294.75
CO: $449.30
BTN: $284.55

Preflop: Hero is dealt J[img]/images/graemlins/heart.gif[/img] J[img]/images/graemlins/diamond.gif[/img] (6 Players)
2 folds, <font color="red">CO raises to $7.00</font>, 2 folds, <font color="red">Hero raises to $27.00</font>, CO calls $20.00

Flop: ($55) 4[img]/images/graemlins/club.gif[/img] 8[img]/images/graemlins/spade.gif[/img] 8[img]/images/graemlins/club.gif[/img] (2 Players)
<font color="red">Hero bets $40.00</font>, <font color="red">CO raises to $222.00</font>

Pot Size: $317.00

Hero???

What range of hands do you put villain on? Any advice appreciated. Thx. GL.