Mourgue D'Algue toppled Lou Hart, 4 and 3 to set up a second-round match on Tuesday against Barbara Byrnes, who moved on thanks to a 2 and 1 win over Anne Zahn on Monday.
Lang, playing in the last match of the day at Sea Island Golf Club, destroyed Mary Ann Beattie, 7 and 5. Lang will meet Taffy Brower on Tuesday after Brower beat Shelley Savage, 3 and 2.
Carol Semple Thompson, one of the winningest participants in USGA events and the runner-up last year, advanced on Monday with a 3 and 2 win over Cindy Corlett. Semple Thompson will meet Alison Reifers on Tuesday as Reifers beat Diana L. Schwab, 4 and 3.
Marianne Springer needed one extra hole to defeat Ann Lahey and will now meet Noreen Mohler on Tuesday. Mohler topped Mary Budke, 3 and 2.
Other winners on Monday include: Deborah Anderson, Kristine Berger, Robyn Puckett, Marlene Streit, Anna Schultz, Annette Gaiotti, Mimi Hoffman, Judy Miller, Joan Garety, Patty Moore, Viveca Hoff, Pamela Clark-Brown, Nancy Smith, Marsha Butler, Jennifer Adams, Toni Wiesner, Sandy Woodruff, Sherry Bowman, Marianne Towersey, Lisa Smego, Carolyn Creekmore, Robin W. Donnelley, Boodie McGurn and Maggie Scott.
On Tuesday, there will be the second and third rounds of match play.
The USGA Senior Women's Amateur is open to female amateur golfers who will have reached their 50th birthday on or before October 7, 2006, and have USGA Handicap Indexes not exceeding 18.4.