THE SPINE MODE OF CENTROPYXIS ACULEATA. he; 
7. Bajool, Fig. 8. April, 1915. 
No. of spines £2.83 °4, 3°56 7 
Frequency 2 ide ee 4710) 00m «ih 
Total frequency 28 ; Mode 5 
S|VnpIAspul 40 ON 
Fig. 8. Spine frequency polygon. Bajool, April 1915. 
From tables (2-7) it will be seen that: the modal value 
is not a constant for different localities. 
Table of Modes. 
Modal Value. Locality. 
3 Brisbane Botanical Gardens (1), Gold Creek (3), 
Eumundi (6). 
3-4 Caloundra Head (5), Ironside (4), 
- Brisbane Botanical Gardens (2). 
5 Bajool (7). 
All the polygons (Figs. 1, 3-8) are unimodal in spite of 
the variability of the mode from 3-5, and the great range 
of variation that characterises Centropyxis aculeata. 
Summary. 
1. Spine frequency polygons of Centropyxis aculeata, 
Stein are unimodal. 
