1979] McCluskey & Soong — Rhythm Variables in Ants 97 
Figure k Comparative time patterns during light part of light-dark cycles. Histo¬ 
grams based on raw counts averaged over the 3 days (May 27-29) and 5 replicate 
nests (1 nest for M. mimicus) for each species. Each bar represents total number of 
ants out at a given observation: bottom part, tube count; middle (shaded), warm half 
of arena; top, hot half of arena. Dotted line to right of bar represents number active 
of total number out (omitted for 0700). 
