IV . CONTENTS. 



PART II. (Continued.) pages 

 On two new Trilobites from Bowning. By John 

 Mitchell, late Principal, Technical College, New- 

 castle, N . S . W . (Plates xv. -xvi.) 441-449 



Australian Stratiomyidae (Diptera), with Description 

 of new Species. By G. F. Hill, F.E. S. (Thir- 

 teen Text-figs. ) 450-462 



Elections and Announcements 257, 355, 438 



Notes and Exhibits 257, 355-357, 438 



PART III. (No. 175.) 

 {Issued 17 th December, 1919) 



An Ecological Study of the Saltmarsh Vegetation in the 

 Port Jackson District. By A. A. Hamilton, Botanic 

 Gardens, Sydney. (Plates xvii.-xxx.) 463-513 



The Venous Oxygen Content and the Alkaline Reserve of 

 the Blood in Pneumonic Influenza. By H. S. 

 Halcro Wardlaw, D.Sc, Linnean Macleay Fellow 

 of the Society in Physiology 514-524 



Notes on the Australian Genus Cestrinus Er. (fam. 

 Tenebrionidae) and some Allied Genera. By K. G. 

 Blair, British Museum. (Communicated by H. J. 

 Carter, B.A., F.E.S.) 529 532 



The Panorpoid Complex. Part iii. The Wing- Venation. 

 By R. J. Till yard, M.A., D.Sc, F.L.S., F.E.S., Lin- 

 nean Macleay Fellow of the Society in Zoology. 

 (Plates xxxi.-xxxv. and seventy-nine Text-figures.) 533-718 



Announcements 525 



Notes and Exhibits 525-528 



PART IV. (No. 176.) 

 (Issued 15th March, 1920.) 



On a new Isopodan genus (family Oniscidae) from 

 Lake Corangamite, Victoria. By Chas. Chilton, 

 M.A., D.Sc, LL.D., F.L.S., C.M.Z.S., Professor 

 of Biology, Canterbury College, New Zealand. 

 (Twenty Text-figures.) 723-734 



