In October, 1953, an estimated 20 per cent of the sheep in “The Green” section of Bell Island, Conception Bay, Newfoundland, were infested with blowfly larvae. In some instances the infestation was so severe that the sheep died from the attack.

Larvae collected from an infested sheep were reared on Pard (Swift Canadian Company, Toronto) dog food. The flies were considered by Mr. J. F. McAlpine, Systematic Entomology Unit, Entomology Division, Ottawa, to be of Phaenicia sericata (Mg.). Mr. McAlpine (in litt.) hoted that the Newfonndland specimens differed slightly from Hall's concept of P. sericata in colour, degree of pollinosity, and width of from in the male; however, a small series of reared adults was all that was available from Newfoundland and these differences may fall within the limits of variation for such a common, widespread species.