DEVELOPMENT AND DISTRIBUTION OF LEGUMINOSZ. 377 
indigenous genera. An examination of forms such as 
Podalaria and Cyclopis, in Podalyriez, Liparia, Priestlya, 
Amphythalea, Celidium, Walspersia, Borbonia, Rafnia, 
Kuchlora, Pleispora, Lotononis, Listia, Argyrolobium, 
Dichilus, Melolobium, Hypocalyptus, Loddegesia, Lebeckia, 
Viborgia, Buchenrcedera, and Aspalathus in Genistee, 
Sutherlandia, Lessertia, Sylitra, Requienia, Hallia, Cal- 
purnia, Schotia, and Burkea, suggests decidedly that its 
possible direct land relations with Australia during the 
development of the endemic types herewith enumerated 
are to be sought by way of tropical Africa, India, and 
Malayasia rather than by a direct connection of South 
Africa with temperate Australia. 
The study of New Zealand types, on the other hand, 
suggests isolation from the tropics before the Papilionaceze 
had been highly differentiated. 
Extratropical South America.—The endemic types of 
this large land mass are strikingly few as compared with 
the very numerous types in both South Africa and Aus- 
tralia, regions which may be compared with it from a con- 
sideration of its position among the continents. Patagonium 
is the single noteworthy endemic genus with ninety species. 
It would appear as though this vast land had been isolated 
from the tropics during the great differentiation of Legu- 
minose, and that it had been overrun with later types 
from the north following upon a recent land connection 
with the tropical portion of America.’ 
Eurasia.—This immense land block appears to have been 
the home of many important genera, xerophytic or herbace- 
ous in the main. The vast genus Astragalus, as also 
Adenocarpus, Ulex, Cytisus, Ononis, Genista, Trigonella, 
Medicago, Melilotus, Trifolium, Anthyllis, Dorycnium, 
+ See also (38) and (39) in connection with animal distribution. 
