Still riding high on the success of their latest album, the Offspring have extended their trek through North America by adding a series of dates in March and April, according to the band's official website.

The band will be joined by Australian punk/rockabilly band the Living End on all dates, and many shows also will feature New York punkers D Generation. Bluesy hip-hopper Everlast and Australian trio Silverchair will open two shows in March.

The tour, which began Feb. 24 in Cleveland, will swing through midsize indoor amphitheaters in Washington, Oregon and California in March, and continue along the West Coast in April before hitting Texas, Kansas and Wisconsin.

One date in May has already been scheduled; that show, in Phoenix will feature ska-punkers the Mighty Mighty Bosstones, who also are expected to open for the band on other dates to be announced soon, according to the Offspring's website (www.offspring.com.)

The Offspring's 1998 album, Americana, has been a substantial success for the band, spawning the huge hit single "Pretty Fly (For a White Guy)" (RealAudio excerpt). Americana has been on the Billboard 200 albums chart for 18 weeks; it's currently at #7, with 100,787 copies sold last week alone.

The band previously had been best known for their 1994 hit "Come Out and Play" (RealAudio excerpt), which bears some musical similarity to "Pretty Fly."

The second single from Americana, the cheerfully vicious romp "Why Don't You Get a Job?" is at #4 on the Billboard Modern Rock chart.

The Offspring's lead singer, Dexter Holland, said in November that many songs on the album "seemed to fit into this idea of Americana, which has all these nice, glossy connotations of Norman Rockwell and white picket fences."

"But today's American culture is much more about every kid having a tattoo and a nipple piercing and a sports utility vehicle," he added.

D Generation, who join the tour beginning March 30, released their latest album, Through the Darkness, in February; the Living End released a self-titled album that month as well.

Offspring Additional Tour Dates:

March 27; Snoqualmie Pass, Wash.; The Summit (with the Living End, Everlast and Silverchair)

March 28; Salem, Ore.; Salem Armory Auditorium (with the Living End, Everlast and Silverchair)

March 30; San Jose, Calif.; Events Center (with D Generation and the Living End)

March 31; Sacramento, Calif.; Memorial Auditorium (with D Generation and the Living End)

April 2; Los Angeles, Calif., Universal Amphitheatre (with D Generation and the Living End)

April 3; Los Angeles, Calif.; Universal Amphitheatre (with D Generation and the Living End)

April 4; San Diego, Calif.; Cox Arena (with D Generation and the Living End)

April 8; San Antonio, Texas; Sunken Gardens (with D Generation and the Living End)

April 9; Austin, Texas; Music Hall (with D Generation and the Living End)

April 10; Houston, Texas; Aerial Theater at Bayou Place (with D Generation and the Living End)

April 12; Kansas City, Kan.; Memorial Hall (with D Generation and the Living End)

April 13; Milwaukee, Wis.; The Rave (with D Generation and the Living End)

April 14; Chicago, Ill.; UIC Pavilion (with D Generation and the Living End)

May 15; Phoenix, Ariz.; Blockbuster Desert Sky Pavilion (with the Mighty Mighty Bosstones and the Living End