Art. XX. — TJie Phyllopoda of Australia, including descriptions of some new Genera and Species. By O. a. SAYCE. (With Plates XXVII.-XXXVI.). [Read 11th December, 1902.] The earliest descriptions of Australian Phyllopoda are those of the Rev. R. L. King, published in the Proceedings of the Royal Society of Van Diemen's Land for 1855. Since then the list has been considerably added to by various workers ; ^ but frequently the want of figures and more detailed descriptions than have been given, makes it almost impossible to accurately identify the species. Our thanks are especially due to Prof. G. O. Sars for his very careful rede.scriptions and figures of old species, as well as for his care in presenting new ones. Besides describing some spirit specimens he has received dried mud from different parts of the continent and successfully hatched out in Norway a considerable number of species, and given valuable information of the life-history of several. The imporcant treatise of Messrs. Baldwin Spencer and Hall on the Phyllopoda of Central Australia in the Report of the Horn Expedition should also be mentioned here, wherein, besides descriptions and figures of new species, records of their distribu-tion and some interesting biological observations are made. My aim in this paper has been to present a complete catalogue of the Australian Phyllopoda, including bibliographical references, and redescribing and figuring more amply those that appeared to need it, and of which I had specimens ; also giving sufficient descriptive detail for a fairly accurate identification of each of the others. Unfortunately the material to hand of the several 1 In the Proc. Zool. Soc. London, 1886, Prof. Brady gives a list of species, not only of the Phyllopoda, but all the Entomostraca known at that time.
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