WHITE-THROATED THICKHEAD. 
notice 1.1 inch (one half). This may be P. intermedia (North), but the reference 
has not been compared.” A few pages previously he had written : “ I would 
suggest that the specific name halmaturina be applied to Pachycephala gutturalis.” 
Regarding the name P. intermedia North this appears to be the only publication 
of the name. 
Mr. Edwin Ashby has sent me a note stating : “ In my collection is 
a specimen which I shot near Ballarat, Victoria, which Mr. A. J. North has 
called intermedia, being intermediate between P. gutturalis and P. occidentalism 
From this it would appear that North at first called this form intermedia but 
before publication altered it to meridionalis. 
About the same time De Vis described the Bellenden Ker form as P. 
mestoni, but some years previously Reichenow had named this as P. 
queenslandica. This appears to be the separation made up to 1910 when A. J. 
Campbell described a new species of Eopsaltria as E. hilli, which proved to 
be the female of a species of this group. 
The consideration of the species for the preparation of my “ Reference 
List ” showed many forms which as to the males seemed to intergrade, and 
following Messrs. Rothschild and Hartert were regarded as subspecies only of 
gutturalis, thus P. g. gutturalis, P. g. robusta, P. g. queenslandica, P. g. ashbyi, P. 
g. youngi, P. g. glaucura, P. g. fuliginosa , P. g. occidentalis and P. g. melanura. 
Two of these were new subspecies, P. g . ashbyi for the Blackall Range, South 
Queensland, form, which “ differs from P. g. gutturalis in being greener -yellow 
above and much more reddish -orange below,” and P. g. youngi for the Victorian 
race, differing “ in having the tail for half its distance from the tip quite black : 
the basal half being grey.” P. g. fuliginosa was used in place of North’s 
meridionalis as Vigors and Horsfield gave the locality of their P. fuliginosa 
as South Australia, and by G. R. Gray, Gadow, etc., this had been considered 
as synonymous with gutturalis. 
Receipt of Melville Island specimens enabled me to add two more 
subspecies, but these will be considered under the succeeding specie^, while 
Zietz renamed the former. 
A little later I recognised that the species name which had been altered 
just a few years before had to be changed from the familiar one to the one 
Sharpe favoured, gutturalis proving to be preoccupied. With this emendation 
and the acceptance of the Kangaroo Island form twelve subspecies were 
recognised all of one species, in the “ List ” published in 1913. 
Upon concerning myself with the selection of specimens for the purpose 
of illustrating the species for this work, I perceived some peculiar confusion 
existed. A preliminary review was therefore made for the purpose of criticism 
and published in the Austral Avian Record. I there pronounced for three 
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