Service on several D.C. Metrobus lines will be adjusted beginning Sunday. Metro officials say the following adjustments, along with others made throughout the region in the past several weeks, will save about

.5 million in annual Metrobus costs.

Mount Pleasant Line: Route 44 -- the 2:28, 3:09 and 3:45 a.m. trips from Mount Pleasant on weekdays, Saturdays and Sundays will be eliminated. The 2:29, 3:06, 3:46 and 4:23 a.m. trips from Stadium-Armory on weekdays, Saturdays and Sundays also will be eliminated; Route 46 -- the 11:45 p.m. and 12:15 a.m. trips from the Kennedy Center on Saturdays will be eliminated; Routes 40 and 42 -- New Sunday schedules will go into effect.

North Capitol Street Line: Routes 80 and 81 -- New Rush hour schedules will go into effect, changing the number of trips serving Potomac Park and the Kennedy Center.

Maryland Line: Route 82/ -- the 2:13, 3:13 and 4:13 a.m. trips from 14th Street and New York Avenue on weekdays, Saturdays and Sundays will be eliminated. Route 82 -- the 1:43, 2:43 and 3:43 a.m. trips from Mount Rainier on weekdays, Saturdays and Sundays will be eliminated. The 4:43 a.m. trip from Mount Rainier on Saturdays and Sundays also will be eliminated. Service between Mount Rainier and Rhode Island Avenue station or 11th and E streets NW will be reduces on weekdays and Saturday and Sunday evenings. This change results from the elimination of some Maryland trips on this line.

Eckington Line: Route B6 -- New weekend schedules provide trips every 30 minutes instead of every 20 minutes.

Brookland-Kennedy Center Line: Route H6 -- The 12:20 a.m. Sunday trip from the Kennedy Center will be eliminated.

West End-Fort McNair Line: Route M5 -- All eastbound morning rush-hour trips and all westbound evening rush-hour trips will be eliminated. Service will be reduced on other rush-hour trips.

Queens Chapel Road Line: Route R2/ -- Service between the Brookland Metro station and Avondale will be reduced.

Benning Line: Route X5 -- the 2:50 and 3:50 a.m. trips from Lafayette Square and the 2:15, 2:55 and 3:35 a.m. trips from Capitol Heights station will be eliminated on weekdays, Saturdays and Sundays. Route X7 -- the 3:10 and 3:50 a.m. trips from Lafayette Square and the 2:30, 3:10 and 3:50 a.m. trips from Capitol Heights will be eliminated on weekdays, Saturdays and Sundays.

For information on bus schedule adjustments, call the Trans Authority at 637-2437.