Sorry to bother you all again, but I have just noticed
Mathews,1927,Systema Avium Australasianarum,1,p.147 list
the form in Tasmania as
Bruchigavia novaehollandiae jamesonii
Larus jamesonii Wilson,1829,Wilson,James,1831,Illustrations
of Zoology, being representations of new, rare, or remarkable subjects of the
animal kingdom : with ... descriptive details,pt.6,pl.xxiii."Shores of New
Holland" = Tasmania.
list his own gunni (Larus novaehollandiae gunni Mathews,1912,Novitates
Zoologicae,18,p.212.(Tasmania). ) in the synonymy.
if the Tasmanian form is recognised as a good subspecies, should it be called