f}l8 
APPENDIX. 
[B. 
which is probably the limit of the genus on that hemi- 
sphere. 
A Tragia (scarcely distinct from a species indigenous in 
India) is sparingly scattered on the East and North Coasts ; 
and Acalypha has been remarked on these, as well as the 
north-western shores. 
PiTTOSPOREiE. — Of this Small family, whose characters 
and limits were first defined by Mr. Brown, there are six- 
teen species in the Herbarium of these voyages, referrible 
to Bursaria, Billardiera, Pittosporum, and two unpublished 
genera. 
Billardiera, whose species are wholly volubilous, and 
which are not found north of the parallel of Port Jackson, 
is frequent on the South-west Coast, and has been recently 
remarked on the West Coast of Van Diemen’s Land. Bursa- 
ria on the other hand, appearing limited to New South Wales, 
has been traced within the tropic to latitude 19° South on 
those eastern shores, and although the genus Pittosporum is 
even more extensively diffused on that coast, it has not 
been met with upon the north-western shores, whilst the 
islands off the West Coast furnished me with two new 
species. 
Diosme®, although very frequent in the higher latitudes 
of Terra Australis, where they are so frequent as to give a 
peculiar character to their vegetable productions, is com- 
paratively rare within the tropic ; for upon the East Coast 
Eriostemon and Phebalium appear to be the only genera, 
the latter having been recently discovered, in about latitude 
20° South. 
With some undescribed species of Boronia, a new genus 
allied to Eriostemon has been observed on the north-western 
