I am indebted to the Imperial Institute of Entomology and to Mr. F. Laing, of the British Museum, for submitting to me for classification a small collection of Thysanoptera from Dr. J. Davidson, of the Waite Agricultural Research Institute, Glen Osmond, South Australia. The specimens reached me well preserved in alcohol, in tubes each labelled “S. Australia, Adelaide, month-1929, Dr. J. Davidson, from lucerne, rose-bushes, etc.” All measurements in this paper are in μ.