One of the most outstanding instances of the benefits to be derived from the importation of parasites of our injurious insects, be they of foreign or domestic origin, is to be found in a study of the Larch Sawfly situation in Canada, especially in Manitoba, during the past twenty years.

This paper records the capture and rearing of a new genus and species of mayfly iroin the mountains of North Carolina, to which the name Oreianthus purpureus is herewith assigned. The nymph of this new genus has been taken at but two stations. It was first found in Davidson River in Transylvania Co., within the borders of Pisgah National Forest, and near the little town of Pisgah Forest.

During the summer of 1929 it occurred to the author to collect the subterranean insects of stands of marsh grass (Spartina Michauxiana Hitchcock). No large areas of this grass were found in the vicinity of Ames, Iowa. The places of study hence were restricted to a half dozen small spots along the fence lines of tilled fields near Ames. The soil was a black loam and not well-drained at these places. The digging in this tough sod proved rather a slow procedure. With a spade a piece of sod about six by eight inches was loosened at a time and the mass of rootstocks, roots and soil was separated at the side of the road to bring the insects into view. This method did not lend itself to quantitative study.

In the second paper of this series I have selected for discussion the nymphal stages of three species. The first of these is Paurocephala fremontiae F. D. Klyver, the adults of which are described in the preceding paper. The other species considered are Psylla pyricola Förster and P. mali Schdbg., both of which are of special interest because of their economic importance. The nymphal stages of neither species have been adequately figured nor described in detail.

Length 8.4-9.3 mm.; width 4.3-4.8 mm. Moderately elongate, oval. Black; dorsum feebly shining and with a very feeble aeneous tint; two spots on the vertex, the anterior part of the head, and sides of elytra usually brown or brownish-yellow; antennae yellow, with four or five apical segments brown; palpi yellow, the apical segment of each brown; prosternum and legs dark brown.