514 



THE ENTOZOA OF MONOTREMATA AND 

 AUSTRALIAN MARSUPIALIA. No. i. 



By T. Harvey Johnston, M.A., B.Sc, Assistant Government 

 Microbiologist. 



{From the Bureau of Microbiology, Sydney, N.S. W.) 



Some little time ago. there was placed at my disposal a collec- 

 tion of Australian Entozoa, a goodly number of which were from 

 marsupials. The greater part of the collection was got together 

 by Prof. J. P. Hill, D.Sc, while in Australia, and Mr. S. J. 

 Johnston, B.A., B.Sc, of the Biology Department, Sydney 

 University. 



I have thought it advisable that the first paper under the 

 above heading should be of an introductory character. Since no 

 one as yet has brought together a systematically arranged list of 

 the known or imperfectly known parasites of these two interest- 

 ing Orders of mammalia, it is my intention to state under each 

 host the names of its known Entozoa, with a list of references to 

 each. Dr. G. Sweet(36) has recently published a Census of Aus- 

 tralian Entozoa, in which many of the following references have 

 been noted. Dr. von Linstow(29) mentioned some of the earlier 

 records in his "Compendium der Helminthologie," 1878, and its 

 Supplement,' 1888. 



The most important workers in this subject are Prof. Zschokke 

 and Dr. Janicki (Cestoda), and Dr. von Linstow (Nematoda). A 

 fair number of imperfectly described forms have been recorded, 

 amongst them being Krefft's species,(24) all of which require 

 redescription in order to place them systematically. 



Although the work will be almost entirely restricted to Cestoda, 

 yet for reasons mentioned I have preferred to use the wider term 



