Endoparasites of Australian Stock. 455 



object then is twofold : first, to increase our purely scientific 

 k*" ,>vledge of the Australian parasitic fauna, and especially of 

 the " worms " ; and secondly, to attack in some measure the 

 scientific and economic problems associated with the existence 

 and eradication of these " pests." 



As a result of the courtesy and foresight of the ex-Minister 

 of Agriculture and the chief officer in the Stock branch of the 

 Department of Agriculture of Victoria, a large number of 

 circulars have been printed and distributed to those most likely 

 to assist, especially in this State, inviting their co-operation in 

 sending specimens. As yet, it is too soon to receive much 

 response in the way of material, but considerable interest has 

 been shown in the matter in other States as well as this. 



At the outset I wish to thank most sincerely all those who 

 have already helped forward this work — especially the ei- 

 Minister for Agriculture (Hon. George Swinburne, M.L.A.), and 

 the chief veterinary officer in the Stock Branch (Mr. S. S. 

 Cameron, M.R.C.V.S.), Professor Baldwin Spencer, C.M.G., 

 F.R.S., and Dr. T. S Hall, of the Biological Department in this 

 University, and also the librarians and assistants of the several 

 Government and other libraries, who have done their utmost to 

 assist me in my tedious search for records. The names of those 

 to whom my thanks are due for specimens appear in connection 

 with the individvuil records. 



Census. 



In undertaking this work it was essential that I should know 

 exactly what has been recorded up to date from or in Australia 

 and Tasmania, and New Guinea with its surrounding islands, 

 these being included on account of the existence of Australian 

 marsiipials there. As it seemed that this information would 

 be useful for others also, it is being published here. Although, 

 primarily concerned with the endo-parasitic worms, it appeared 

 desiral^le to add to the list such references as I met in my 

 search, dealing with forms belonging to the Araclinida, etc., 

 which have well-marked endoparasitic stages in their life- 

 histories. 



