London Irish back rower Ofisa Treviranus will captain Scotland's Pool B rivals Samoa at the World Cup.
The Pacific Island nation are the first to name their squad for the tournament, which takes place in England from 18 September to 31 October.
Leicester's Logovi'i Mulipola and Newcastle's Alesana Tuilagi also make the cut, but Falcons' player of the season Sinoti Sinoti misses out.
Northampton's George and Ken Pisi are joined by Japan-based brother Tusi.
Samoa World Cup squad:
Forwards: Ole Avei (Bordeaux Begles), Manu Leiataua (Aurillac), Motu Matu'u (Wellington Hurricanes), Viliamu Afatia (Agen), Jake Grey (Samoa Scopa), Logovi'i Mulipola (Leicester Tigers), Anthony Perenise (Bristol), Sakaria Taulafo (Stade Français), Fa'atiga Lemalu (Bourgoin), Filo Paulo (Benetton Treviso), Joe Tekori (Toulouse), Kane Thompson (Newcastle Falcons), Maurie Fa'asavalu (Oyonnax), Alafoti Faosiliva (Bath), Jack Lam (Bristol), Ofisa Treviranus (capt, London Irish), TJ Ioane (Sale Sharks), Sanele Vavae Tuilagi (Carcassonne).
Backs: Vavao Afemai (Samoa Vaiala), Kahn Fotuali'i (Northampton Saints), Patrick Fa'apale (Samoa Vaiala), Tusi Pisi (Suntory Sungoliath), Michael Stanley (unattached), Rey Lee-Lo (Cardiff Blues), Johnny Leota (Sale Sharks), Paul Perez (Coastal Sharks), George Pisi (Northampton Saints), Fa'atoina Autagavaia (Nevers), Ken Pisi (Northampton Saints), Alesana Tuilagi (Newcastle Falcons), Tim Nanai-Williams (Ricoh Black Rams).