Periodic outbreaks of the spruce budworm (Choristoneura Fumiferana Clem) are common and cause extensive damage including tree mortality in eastern North America (Webb, Blais, and Nash Can. Entomol 93:360-379 1961). Previous outbreaks of this insect were of minor  importance in newfoundland, but populations have persisted at outbreak levels sine 1971 and the current infestation now covers more than 7 million acres (2.8 million hectares) (nearly 50%) of forested land. Balsam fir on over 300,000 acres (121,000 hectares) have sustained (severe > 75%) defoliation of new foliage for more than 2 years. Continuation of the infestation could lead to some tree mortality in 1975. To aid in a forecast of damage in 1975, we made an extensive egg-mass survey in September 1974.