Bath have signed USA international Chris Biller on a short-term deal.
The 26-year-old hooker has 16 caps for his country - three of those coming during this year's World Cup.
He has been drafted in as emergency cover after injuries to Lee Mears, Ross Batty and Pieter Dixon.
Director of rugby Sir Ian McGeechan told the club website: "We've been unlucky with injuries, but to have someone of Chris' ability available to us is great."
Biller started for the States in their one win at the 2011 tournament, a 13-6 success over Russia.
McGeechan added: "He's a good strong player, who has played to a very high level, and we're looking forward to him adding to the experience we have within the squad."