PROCEEDINGS, 1912, PART 1 



CONTENTS. 



PACKS 



Presidential Address delivered at the Thirty-seventh Annual 

 General Meeting, March 27th, 1912, by W. W. Froggatt, 

 F.L.S 1-43 



The Constitution of the Gastropod Protocouch : its value as a 

 Toxonomic Feature, and the Significance of some of its Forms. 

 By H. Leighton Kesteven, D.Sc, Lecturer in Physiology 

 and Biochemistry, Technical College, Sydney. {Communi- 

 cated by Dr. H. G. Chajiman.) (i?\a,tG \.) 49-82 



Revision 9f the Amycterides. Part ii. Talaurinus. By Eustace 



W. Ferguson, M.B., Ch.M. (Plates ii.-iii.) 83-135 



The Chemistry of Doryphora sassafras. By James M. Petrib, 

 D.Sc. , F.I.C. , Linnean Macleay Fellow of the Society in 

 Biochemistry... ... ... ... ... ... ... ... 139-156 



Supplementary List of the Marine Algae of Australia. By A. H. 



. S. Lucas, M.A.,B.Sc 157-171 



On a Collection of Parasitic Hymenoptera (chiefly bred), made by 

 Mr. Walter W. Froggatt, F.L.S., in New South Wales, with 

 Descriptions of new Genera and Species. By P. Cameron. 

 {Commtmicated by W. W. Froggatt) 172-216 



Descriptions of two new Species of Ichneumonidce from the Island 



of Aru. By P. Cameron. (Communicated by W. W. Froggatt) 217-219 



Hydrocyanic Acid in Plants. Part i. Its Distribution in the 

 Australian Flora. By James M. Petrie, D.Sci F.I.C, 

 Linnean Macleay Fellow of the Society in Biochemistry ... 220-234 



Hon. Treasurer's Financial Statement, Balance Sheet, etc. ... 43-47 



Elections and Announcements ... ... ... ... ... ... 136 



Notes and Exhibits 48,136 



