The program of the "Pops" concert this evening at 8.15 o'clock in Symphony Hall in Boston follows: 1. March, "El Capitan"  Sousa 2. Overture, "Masaniello"  Auber 3. Waltz, "Espana"  Waldteufel 4. Fantasia, "Mefistofele"  Boito 5. First Hungarian Rhapsody  Liszt 6. Large, (Solo Violin, Harp, Strings and Organ)  Handel 7. Children at Play  van Westerhout 8. Introduction and Dance of Salome  Glazounov 9. Selection, "Mile Modiste"  Herbert 10. Intermezzo Act III, "Jewels of the Madonna"  Wolf-Ferrari 11. American Patrol  Meacham