Wales caretaker coach Rob Howley has named his initial training squad which includes four uncapped players that will travel to Australia for three Test matches against the Wallabies.
Howley, who is leading Wales while coach Warren Gatland recovers from leg injuries sustained in a fall, selected fullback Liam Williams, prop Rhodri Jones, center Ashley Beck and wing Harry Robinson for a squad that will first face the Barbarians before departing for Australia.
Wales takes on a strong Barbarians team in a full international at Cardiff's Millennium Stadium on June 2, with the final touring party to be finalized afterward.
"We hope to get the summer off to a winning start against the Baa-Baas and everyone who figures in that game will be playing for a place on the tour," Howley said.
The only players unavailable are center Jamie Roberts and hooker Huw Bennett because of injury and fullback Lee Byrne, who will be on standby because of his commitments to French club Clermont Auvergne.
The first test is on June 9, the same day as France's Top 14 final.
"We have been pretty consistent with selection," Howley said. "It's now down to these players to pick up where we left off in the Six Nations and prove to us that they should be on that plane to Australia."
Wales, which won its third Six Nations Grand Slam in eight seasons this year, plays Australia in Brisbane on June 9.
After a Tuesday game against the Brumbies in Canberra, Wales plays the Wallabies in Melbourne on June 16 and winds up its three-test tour in Sydney a week later.
Wales training squad:
Ryan Bevington, Luke Charteris, Bradley Davies, Ian Evans, Toby Faletau, Rhys Gill, Richard Hibbard, Paul James, Gethin Jenkins, Adam Jones, Alun Wyn Jones, Rhodri Jones, Ryan Jones, Dan Lydiate, Ken Owens, Matthew Rees, Aaron Shingler, Justin Tipuric, Josh Turnbull, Sam Warburton, Martyn Williams.
Ashley Beck, Dan Biggar, Andrew Bishop, Aled Brew, Alex Cuthbert, Jonathan Davies, Leigh Halfpenny, Will Harries, James Hook, George North, Mike Phillips, Rhys Priestland, Harry Robinson, Rhys Webb, Lloyd Williams, Scott Williams, Liam Williams.