CONTENTS. 
PAGE 
Robertson, T. Brailsford : An Outline of a Theory of the 
GeneSi-s of Protoplasmic Motion and Excitation. ... 1 
Basedow, H. : Geological iXeport on Country Traversed by 
the South Australian Government JNorth-West Prospect- 
ing Expedition, 1903. Plates xiii. to xx. ... ... 57 
Lower, O. B. : JNew Australian Lepidoptera (xxii.) ... 103 
Baker, W. H. : Notes on South Australian L>ecapod Crus- 
tacea. Part li. Plates xxi. to xxiv. ... ... ... 116 
Bragg, Prof. W. H. and R. D. ivleeman : Un tJae Alpha 
Particles of Radium, and their Loss of Range in Passing 
Through Various Atoms and Molecules ... ... ... 132 
Basedow, H., and C. Hedley : South Australian Nudi- 
branchs, and an Enumeration of the known Australian 
Species. Plates i. to xii. ... ... ... ... ... 134 
Hedley, C. : Report on the MoUusca Collected by Mr. H. 
Basedow on the South Australian Government North- 
west Expedition. Plate XXX. 161 
Verco, Dr. J: U. : Notes on South Australian Marine Mol- 
lusca, with Description of New Species. Part ii. 
Plate xxxi. 166 
Lower, 0. h. ; Description of New Australian Lepidoptera, 
with Synonymic Notes, (xxiii.) ... ... 173 
Basedow, H. : On Naticoid Genera Lamellaria and Caledoni- 
ella, irom. South Australia. Plates xxvi. to xxix. ... 181 
Bragg, Prof. W. H., and R. D. Kleeman; On the Recom- 
binatitjn of Ions in Air and other Gases ... ... ... 187 
Maiden, J. n.: An Aroid New for Australia ... 207 
Lea, Arthur M. : Descriptions of Australian Curculionidse, 
with Notes on Previously Described Species. Part iii. 209 
Tepper, J: G. O. : Insects Collected in N orth- W estern Region 
of South Australia by H. Basedow, with Descriptions of 
New ttpecies. No. ii 237 
Etheridqe, R., jun. : Additions to the Cambrian Fauna of 
South Australia. Plate xxv. 246 
Baker, W. H. : Notes on South Australian Decapod Crus- 
tacea. Part iii. Plates xxxii. to xxxvi. 252 
Blackburn, Rev. T. : Further Notes on Australian Coleop- 
tera, with Descriptions of New Genera and Species, 
(xxxv.) ^ 270 
Abstract op Proceedings 333 
Annual Report 338 
Balance Sheet ... ... 340 
Donations to the Library 341 
List of Jb'ELLOWs, etc 351 
Appendices. 
Proceedings, Annual Report, etc., of the Field Naturalists' 
Section ... 354 
Seventeenth Annual Report of the Native Fauna and Flora 
Prdtec'bion Committee of the Field Naturalists' Section 357 
Annual Report, etc., of the Malacological Section ... ... 360 
Annual Report, etc., of tne Microscopical Section ... ... 361 
Index 363 
