216 
Lord Howe Island.—Mr. W. R. B. Oliver, in the Trans- 
actions of the New Zealand Institute, vol. xlix. pp- 94-161 (1917), 
lectors Mr. d 
Kyllinga monocephala, Rottb., and that is probably a recent 
introduction. As in most oceanic islands a large proportion of 
the arboreal vegetation is endemic, in this case 70 per cent. 
Only 4 of the 169 genera are endemic, two of these being related 
to New Zealand forms, one to New Zealand and New Caledonian 
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the study of the ““Age and Area”’ hypothesis recently propounded 
by Dr. Willis. Mr, Oliver’s opinions are shown i 
to explain their occurrence.’ 
The — are arranged after Engler’s system, but it is regret- 
table that in this valuable contribution the space occupied by 
the double quotation of the binominals was not used for the names 
i 
