In the come of the study of parasites of mealybugs for introduction into West Africa for the control of mealybug vectors of cocoa virus a number of undescribed Encyrtids have been discovered in Trinidad, B.W.I. Descriptions of these and new Encyrtids reared from other hosts will be published in a series of papers.

The present paper records three species of Pseudaphycus from Trinidad, two of which are described as new. I am indebted to Mr. H. Compere who stated (in litt.) that the species herein described were probably new and pointed out the characters that separated them from related species. Dr. B. D. Burks kindly compared specimens of these species with types of related species deposited in the United States National Museum and suggested slight alterations in the manuscript which have been duly made.