1974] 
Hunt — Competing Ant Species 
239 
Figure 2. Activity patterns of the two ant species as documented in 1972; 
A = 4 October, B ~ 5 October. Triangles = Dorymyrmex antarcticus ; 
circles = Tapinoma antarcticum (both in ants per minute passing nest 
opening); dotted line = soil surface temperature (°C) ; dashed line — 
solar intensity (cal/cmVmin) . 
