Christopher Gillis, 42, principal dancer with the Paul Taylor Dance Company, died Saturday in New York of AIDS.Born in Montreal to two Olympic skiers Gene Gillis and Rhona Wurtele, Gillis began his dance training in 1972. He joined the Taylor troupe in 1976. Gillis also performed with his sister, choreographer and dancer Margie Gillis, and with the companies of May O’Donnell and Jose Limon. Gillis began creating his own dances in the early ’80s, initially independently and later as part of the Taylor company repertoire. His works are also in the repertories of Mikhail Baryshnikov’s White Oak Dance Theater and the Fairfax Ballet. Survived by two sisters; his mother and father; and a brother.