I think a revision of Category E to include these species which have disappeared would be a good idea. Personally I suspect that Chinese Babax also deserves a place (I'm not aware of any recent records - has anyone seen them in the last few years?). This is currently Cat C and highlights the reason for these species being in Cat. E rather than C/D.
There's also a few other Cat E species that need consideration for upgrading to B or D but I think the committee is aware of these and working on categorisation.
