THE STATE COPYRIGHT (1990) STATE-RECORD CO. (COLUMBIA, SC) DATE: FRIDAY, August 24, 1990 PAGE: 18 EDITION: FINAL SECTION: WEEKEND LENGTH: MEDIUM ILLUSTRATION: Photo, bw SOURCE: MICHAEL MILLER, Staff Writer NEW RELEASES (*****) Jellyfish, ''Bellybutton,'' Charisma: Don't be fooled by the multicolored tophats, the flowered bell bottoms and hippie beads. Jellyfish is no novelty act - and their debut disc is the best pop album of the year. By incorporating t he inventive melodies of The Beatles, the vocal harmonies of 10CC and contemporary rhythms of XTC and Crowded House, ''Bellybutton'' nearly bursts with exuberance. Real drums and string ensembles are used instead of synthesizers, and this attention to de tail should help Jellyfish float to the top.