Lou Vincent, the New Zealand batsman, will replace Phil Jaques at Worcestershire for five weeks when Jaques returns to Australia for the Top End Series which starts at the end of June.
Steve Rhodes, Worcestershire's Director of Cricket, said: "I am delighted that Lou has agreed to play with us. He is the ideal person to substitute for Phil particularly for the Twenty20 Cup competition. He will bring a dynamic style of play and is the type of character we want in the dressing room."
Vincent added: "It didn't take me long to decide to accept Worcestershire's offer and I am really looking forward to joining the squad later in June. I hope I can make a substantial contribution during my five weeks with the team, particularly in the Twenty20 Cup which I know has been a huge success in England."
Vincent will arrive on June 21 and play his first game in the C & G Trophy against Yorkshire, at New Road, four days later. He has played 22 Tests and 83 ODI's for New Zealand.