120 Transactions of the Boyal Society of South Africa. 
lit 
pi 
+ 1 +++ 1 + 1 t + 1 1 1 + 1 1 + 1 ++ 1 ++ I ++ 1 + 1 1 ++ 1 + 
II 
•000 
-•003 
+ •001 
-•003 
+ •002 
-•004 
+ •002 
+ •009 
-•005 
•000 
+ •003 
-•004 
+ •003 
+ •002 
iiilsliSii 
1 +++ 1 ++ 1 ++ . 
1 
-•003 
-•023 
+ •001 
-•015 
+ •009 
+ •017 
(+•019) 
+ •005 
i 
( + •008) 
-•009 
•000 
+ •002 
-•008 
-•001 
+ •003 
-•Oil 
+ •005 
i 
99999999 99999999 
+ 1+ +1 + 1 +1I + I + I + 
Port 
Darwin. 
9 9 9 9 9 9 
+++ 1 1 1 
Alice 
Springs. 
999999 
+++ 1 1 1 
1 
iliiiiiliiilipiiiiipiliiiiiii 
+ 1 +++++ 1 1 + 1 + 1 1 1 + 1 1 1 ++ 1 ++ 1 +++++ 
1 
lllllllilill 
+1 ++ 1 1 1 1 1 + 
II 
lllllllllllllll 
1 ++ 1 + + +11+ 
if 
||iilll|||g|||||g||llll 
+ II1IIIII+ 1 +1 ++++ 
1 
II+I+ +1II+IIII ++++ 1 ++ 1 + 
i 
iiiisiiiiiiiiiliiiii 
1 1 ++++ 11+11 +++ 1 ++ 
Cape 
Town. 
illlilllipil 
1 1 + 1 + 1 1 + 1 1 ++ 1 
