324 
The Genus Ixodes 
that the ventral surface of palpal article 1 (see Fig. 20 b) is rugose and 
has its postero-internal angle curved inward and pointed; this is 
doubtless only an individual difference. 
The description of the other stages is based on the following speci¬ 
mens from Victoria: (J. 1-3) 1 d 3 ? from Petauroides volans ; (J. 4-6) 
1 $ 2 o 1 L from Trichosurus vulpecula, Gippsland; (J. 15-16) $ o from 
Phascolarctus cinereus, Gippsland; all mounted unfortunately in balsam 
by T. H. Johnston. 
5. Further Data regarding the Geographical Distribution 
and Hosts oe Ixodes. 
The following records relate to specimens determined by 
Mr Warburton and me since the publication of Ticks, Part ii. in 1911. 
The names or letters and numbers in brackets relate to the catalogues 
of various collections; where such numbers are connected by the 
sign = the specimens have been divided between two collections: 
Ashworth 
Berlin 
Cleland 
E. 
H. 
Ind. Mus. 
J. 
Knuth 
Liverpool 
Mitzmain 
Miyajima 
N. 
ScbenUing 
Sweet 
Valerio 
Zool. Soc. 
Denotes collection of 
Dr J. H. Ashworth, Zoological Dept., University of Edinburgh. 
Zoologisches Museum, Berlin. 
Dr J. Burton Cleland, Bureau of Microbiology, Sydney, N.S. Wales. 
Imperial Bureau of Entomology, London. 
Mr. L. Harrison, University of Sydney, N.S. Wales. 
Indian Museum, Calcutta. 
Dr T. H. Johnston, University of Queensland, Brisbane. 
Prof. Knuth, Tierarztliche Hochschule, Berlin. 
Liverpool School of Tropical Medicine. 
Mr M. B. Mitzmain, U.S. Public Health Dept., Washington, D.C. 
Dr M. Miyajima, Imperial Institute for the Study of Infectious Diseases, 
Tokio. 
Prof. G. H. F. Nuttall, F.R.S., Cambridge. 
Prof. Schenkling, Deutsches Entomologisches Museum, Berlin-Dahlem. 
Dr Georgina Sweet, University of Melbourne, Australia. 
Prof. B. Galli-Valerio, Lausanne, Switzerland. 
Zoological Societv of London. 
Countries whence the species have not hitherto been recorded are 
marked by a *. In other cases new hosts and localities are given in 
countries whence specimens have already been derived. In compiling 
the record numerous specimens received by us have had to be excluded 
because they were not accompanied by sufficient- data. The species of 
Ixodes are given in alphabetical order. 
