529 ODONATA, PLANIPENNIA, AND TRICHOPTERA FROM LORD HOWE AND NORFOLK ISLANDS. By R J. TiLLYARD, M.A., B.Sc, F.L.S., F.E.S., Linnean Maclkay Fellow of thk Society in Zoology. (With ten Text-figures.) The small but interesting collection of Odonata, Planipennia, and Trichoptera dealt with in this paper was made by Mr. A. M. Lea, F.E.S., Entomologist to the South Australian Museum. Mr. Lea collected on Norfolk Lsland from November 23rd to December 7th, 1915, and on Lord Howe Island from December 10th, 1915, to January 17th, 1916. I have to thank Mr. E. R. Waite, F.L.S., Director of the South Australian Museum, for the opportunity of studying this collection, I am not able to accept the record of this collection, in the three Orders here dealt with, as in any probability at all a com-plete one. The result from Lord Howe Island is particularly disappointing, only two Planipennia, and no Odonata or Tri-choptera being recorded. Probably the amount of permanent fresh-water on the Island is not sufficient to allow of the exist-ence of many species of the last two Orders; but, at any rate, the flora is rich, and the Island would appear to be well suited to the existence of Planipennia. It is, indeed, remai'kable that one of the two species recorded should belong to the purely Aus-tralian family Nymph'idie. A dweller in dense scrub, both in the larval and imaginal states, this insect flies very little; so that it would not be easy to explain its presence on the Island, unless it had come there originally from Australia, via some lost land-coiniection. The family is a very ancient one, and the Lord Howe Island species appears to be quite Unlike the known Aus-
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