By Lynette Rice
Updated July 15, 2010 at 05:06 PM EDT

Image Credit: Mike Muller/FXFX announced the fall debut dates for several of its new and returning shows, including the third season of Sons of Anarchy. The biker drama that stars Ron Perlman and Katey Sagal will bow Sept. 7. The cabler’s comedy It’s Always Sunny In Philadelphia will come back for its sixth year on Sept. 16.

The network will also roll out Terriers, a dramedy from Ted Griffin (Ocean’s Eleven) and Shawn Ryan (The Shield) about an ex-cop (Donal Logue) who partners with his friend (Michael Raymond-James) to launch a private investigation firm. The show will premiere Sept. 8 and run for 13 weeks.

The sophomore comedy The League will return to Thursdays beginning Sept. 16 in the timeslot following Sunny.