DEVELOPMENT AND DISTRIBUTION OF THE LEGUMINOSZ. 371 
Leptospermum, Jacksonia, Melaleuca, Callistemon, and 
allied types, could have reached New Zealand. Let us 
suppose as an alternative to this that the soil was good, 
the shelter pronounced, and the rainfall long continued. 
This land connection, while being distinctly opposed to the 
distribution of xerophytes, would favour the passage of 
fertile tropical types, especially dense jungle growths. 
Nevertheless types such as Dalbergia, Castanospermum, 
and Afzelia, would be prevented from extending the whole 
way to New Zealand, because its station is far south of 
the tropics. Types such as Hdwardsia, Sophora, and 
certain members of the Galegese, Hedysarece and Phaseolese 
would find ready access to New Zealand, but Podalyriez, 
Genistez, Viciex, and some other types, such as Leptos- 
permee and Trifolieze, would be missing. Acacia, Cassia 
and some other members of Mimosez and Cesalpiniee, 
would not reach New Zealand, because of the lack of 
exposed situations, while Calliandra, Parkia, Copaiba and 
others would fail to extend so far South. 
On the other hand, in Upper Cretaceous and early Ter- 
tiary time, when the climate appears to have been much 
more genial than at the present, it is evident that forms 
such as Dalbergia, Mimosa, Heematoxylon, Calliandra, Cas- 
tanospermum and Hntada, if existent, could have reached 
New Zealand by such a route. 
Hdwardsia appears to have entered New Zealand, and 
there established itseli firmly, changing from a warmth- 
loving type to one flourishing in cold localities. Carmi- 
cheelia, Corallospartium and Notospartium are endemic; 
Carmichelia, especially, is firmly established, and is 
evidently a xerophytic modification of some ancient 
warmth-loving member of the Galegese. Swainsona and 
Clianthus are indigenous, but appear to own their origin 
to Australian waifs in the first place, owing to the singular 
