1. Liris aurata (Fabricius) .

Sphex aurata Fabricius, Ent. Syst. 2: 213, 1793.

Liris aurata (Fabricius) Syst. Piezatorum, 228, 1804. Williams, Hawaii. Sugar Plant. Assoc., Ent. Bull. 14: 138, 1919.

Piti, May 13, Aug. 20, 25, Sept. 1, 6; Agana, Aug. 20, Swezey.

This beautiful golden-marked, cricket-hunting wasp was not previously recorded in Guam, but F. X. Williams gives an account of observations on its habits in the Philippines. The half dozen specimens which I obtained in Guam were mostly in the vicinity of buildings. Several times I saw a female hunting among boxes at the back of our residence where a common cricket ( Gryllodes sigillatus) was abundant. One was captured on a cement walk; another flew into the automobile. The Guam specimens were identified by F. X. Williams.