456 Georgina Sweet : 



It has been my endeavour to make this list of species as com- 

 plete as possible. With this purpose, I have examined all the 

 Scientific and Agricultural Journals published in Australia, as 

 well as other catalogues and records of papers published else- 

 where as set forth in the appended list. Should, however, any 

 genuine record of Australian Entozoa have been omitted, I 

 shall be glad to have my attention called to it, so that it may 

 1)6 included in an appendix. It has not been possible for me 

 to see a few of the papers referred to, as they are not available 

 in Australia — but by far the larger number of references I have 

 seen and checked. In many instances, especially in the Agricul- 

 tural and weekly journals, there are vague references to 

 " worms " in various animals, but without identification or even 

 adequate description from which to identify their class. These, 

 of course, have had to be ignored. Also, in a number of cases, 

 well-known worms are described for the benefit of the public, 

 but without any definite statement of their occurrence in that 

 State or States. Some few of the less indefinite of these have 

 been included here with an interrogation mark, but the majority 

 of them bear no evidence of their definite occurrence in Aus- 

 tralia. It may not be out of place to urge upon those whose 

 professional work brings them into relation with these forms, 

 that even if the form be a well-known one elsewhere, it is 

 necessary that there should be a definite record of its occurrence 

 in any particular region or State, with any features in which it 

 may differ, in structure, habitat, host, etc., from the usual con- 

 ditions. There is, further, no doubt that many records have 

 been made on general grounds of naked-eye appearance, habitat, 

 host, etc., instead of being based on a detailed scientific deter- 

 mination. Also, it is very desirable that the nomenclature of 

 these forms should be as consistent as possible. The synonymy 

 of these lower groups of Metazua is in man}- cases most 

 involved, and it is a matter of great difficulty for one who is not 

 completely conversant with them to get at the true scientific 

 name of very many, especially in the case of the Nematoda, a 

 group which seems to be consistently shunned by the editors of 

 such publications as Bronn's " Thierreicli," etc. 



