104 
Nancy T. Burbidge. 
Knneapogon palUdiis, Eriaclnie pulchella aiul Sorg}iuyn phnnosnm. None of 
these grasses is an important constituent. 
The further one ]ienetrates into the desert the more numeioiis become 
the long sand ridges. These, presumably, are similar to those described by 
AVarburtoji (1875) and Carnegie (18f)S) in the country to the east. Gene- 
ral observations suggested that the Avavla thickets grew between the ridges 
or in open country while small plants of Banhinia Cunningliamii and small 
trees such as Oicenia reticulata and Hakea ntacrocarpa grew on the ridges. 
SrMMAKV, 
An attempt has been made to describe the vegetation of the coastal 
strip between Cape Keraudreri and Cape ^lississey. It has been shown that 
there are two well defined ecological zones which are associated with cer- 
tain soil differences. 
On the coastal plain the. bioti(‘ factor has been responsible for the intro- 
duction of Cenchrus ciliari.^ (Buifel Grass) especially on loamy soils. In the 
desert country no introduced plant has as yet succeeded in establishing it- 
self but where the normal tussock grasses are lost they are replaced by the 
native species Kragrosti.9 rriopoda. 
ACKNOWLEDGMENTS. 
The author wishes to express her tlianks for assistance given by 
the following; 'Mv. S. Mullins of Anna Plains Station, Mr. Spry of Nalgi 
Station, Mr. Laev of Wallal Downs Station and Mr. Welch of Pardoo 
Station. Without the co-operation of these the work could not have beo!) 
carried out. 
REFERENCES. 
Carnegie, D. W.: Spinifex and Sand 1898. 
Warburton, P. E.: Journey Across the Western Interior of .Australia : 
