174 Cc. D. GILLIES. 
2. The modal value for one locality appears to be a 
constant. 
3. The modal value is not a constant for different locali- 
ties, in the observed cases varying from 3-5, 
I should like to express my indebtedness to-Dr. T. Harvey 
Johnston, Biology Department, University of Queensland, 
for his kindness in obtaining the material from Bajool and 
Humundi used in this investigation. 
Bibliography. 
1. Lerpy, J., ‘““Freshwater Rhizopoda of North America,” 1879. 
2. Waxes, G. H. and Penarp, E., ‘‘Rhizopoda,” Clare Island 
Survey, Pt. 65, Proc. Roy. Trish Academy, xxx1, 1911. 
3. West, G., “On some British Freshwater Rhizopoda and 
Heliozoa,” Journ. Linn. Soc. Lond., Zool., xxvi1, 1901, p. 
308 — 342. 
