MUSCICAPIDiE. 
leucogaster and leucura, which I class together under Quoyornis. I have placed 
these between Poecilodryas proper and Tregellasia, which is followed by 
Kempiella, a species resembling the members of Tregellasia , but smaller and 
with weaker feet, probably another true subgenus. Pachycephala now follows, 
and here no true relationship can be arrived at without further internal 
research. I have separated the so-called Pachycephala into several genera 
and here note the apparent close connection with Eopsaltria, as females of the 
former genus have been described as new forms of the latter genus, while some 
species have been ranged under either genus. I associate the two genera which 
in the Catalogue of the Birds in the British Museum were placed in different 
families widely separated. The Yellow-breasted Thickheads have been dealt 
with in another place, so will be left here until I treat them systematically. 
Agreeing in colour pattern are the Rufous-breasted species ( Lewinornis ), but the 
complexity of the subject has been shown in connection with the former ones. 
A peculiar little group, Gilbertornis, the Red-throated forms, offer a novel 
complication in the co-existence of two species which were overlooked for so 
many years. The White-bellied Thickheads, Alisterornis , provide a delightful 
puzzle, although the male shows a striking resemblance in colour pattern 
the female is very like a Colluricincla, a genus of the Prionopidce , according 
to the 44 Handlist ” scheme. I will deal with this in detail in the proper place. 
Timixos includes the dull-coloured species, which is probably nearest in 
coloration to the ancestral form, and peculiarly enough its headquarters are 
Tasmania. An intruder from the north appears in Mattingleya, described by 
one worker as a Pachycephala and by another as an Eopsaltria. It is quite 
unlike the preceding and may be allied to the next genus, Muscitrea, also a 
northern group. These latter are quite unlike the southern “ Pachycephala ” 
and may have quite a different origin and the supposed relationship be 
purely due to convergence. Eopsaltria , which concludes this series, is purely 
southern, yet is missing from Tasmania : this is a very suggestive item and 
should be kept in view when the rearrangement of these forms is attempted. 
Otherwise in connection with Pachycephala s. str., as just noted above, the 
dullest form still lives in Tasmania. The osteology of the Pachycephaline 
species would provide an interesting study. Quite a different series now 
follow, the Fantails, and it is probable when the “ Muscicapidse ” are studied 
that this group will be separated with family rank, as they constitute 
a well-defined Indo-Malaysian-Australian-Pacific entity. Pour genera were 
admitted in my 44 List,” differing in colour and size, and it is impossible to 
again lump these four, whatsoever the ultimate classification may be. When 
allied groups from the islands north of Australia are treated by American 
ornithologists such as Oberholser, more genera are recognised. 
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