Munster's BJ Botha and Ulster's Jared Payne have been included in the Barbarians squad for the upcoming games with England and the British and Irish Lions.
There was further good news for Payne today after Ulster announced that the 27 year old had signed a new three year deal with the province.
Commenting on Payne’s new contract, Ulster’s Director of Rugby, David Humphreys, said: "Jared is an exceptional player who is as dynamic with ball-in-hand as he is rock solid in defence.
"He is a hugely important member of our squad and I am delighted that he has committed to Ulster for a further three years."
Speaking about extending his stay at Ravenhill, Jared Payne said: "I am really enjoying my rugby here at Ulster so I am pleased to be staying for another three years. We have a fantastic squad of players and we play a great brand of rugby.
"It has been a successful season so far and hopefully we can finish the campaign off with some silverware."
Uncapped Wasps flanker Sam Jones is also among the latest additions to a strong Barbarians squad.
The Baa-Baas have now confirmed 22 players who will form the nucleus of their tour party.
The Barbarians play England at Twickenham on May 26, then head to Hong Kong for an appointment with Warren Gatland's Lions six days later.
Former England Under-20 forward Jones will be joined in the squad by his Wasps colleague Marco Wentzel, while other additions include Perpignan-based Wales international back James Hook and fellow Welshmen Dwayne Peel and Matthew Rees.
Players from 10 different countries are now represented, including Hong Kong sevens skipper Rowan Varty, brilliant United States wing Takudzwa Ngwenya and Samoa scrum-half Kahn Fotuali'i.
"Our selection process has taken several months and is still not quite complete," Barbarians team manager Derek Quinnell said.
"Over the next week or so we will be monitoring the domestic play-off matches in Europe and the various national squads for the summer tours.
"Also, one or two players in the squad announced today may not be available for both of our matches, so we expect to add other significant names in the near future."
Squad: Backs - J Payne (Ulster), R Varty (DeA Tigers and Hong Kong), T Ngwenya (Biarritz and USA), J Rokocoko (Bayonne and New Zealand), J Hook (Perpignan and Wales), N Evans (Harlequins and New Zealand), K Fotuali'I (Ospreys and Samoa), D Peel (Sale Sharks and Wales), D Yachvili (Biarritz and France).
Forwards - D Jones (Ospreys and Wales), B J Botha (Munster and South Africa), P James (Bath and Wales), M Castrogiovanni (Leicester and Italy), M Rees (Scarlets and Wales), L Ghiraldini (Treviso and Italy), M Wentzel (Wasps and South Africa), J Hamilton (Gloucester and Scotland), F Louw (Bath and South Africa), S Jones (Wasps), A Zanni (Treviso and Italy), S Parisse (Stade Francais and Italy), I Harinordoquy (Biarritz and France).