SummaryAn examination of specimens revealed that the blue wrens,Malurusspp., emu wrensStipiturusspp., grass-wrens,Amytornisspp., and species of the New Guinea generaTodopsis, Chenorhamphus, andClytomyias, have the common morphological character of a gap in the interscapular zone of the spinal feather tract, this area being covered by longer feathers of the cervical and humeral tracts. This character provides a common link between genera which had been tentatively grouped together in an earlier paper, but excludesLamproliawhich had been provisionally placed with this group.Amytornis striatusandA. textilisshow an extremely close resemblance to some species of babblers of the generaGarrulax, Babax, andArgyain morphology and plumage pattern, and it is considered that this is an indication of relationship ofAmytornisto the Timaliidae. The behaviour ofAmytornisspp., in so far as it is known, resembles that ofMalurusspp. In the earlier paper it had been shown that the behaviour ofMalurusspp. was like that of babblers and did not resemble that of the thrushes, flycatchers, and warblers. In view of the additional evidence it is suggested that the six generaMalurus, Stipiturus, Amytornis, Todopsis, Chenorhamphus, andClytomyiasshould be regarded as an Australasian subfamily or tribe of the babblers, Timaliidae.