174 Trans. Acad. Sci, of St. Louis 
kept these in. Within the porch was a pitiful sight; in 
the two sunniest corners of the porch was literally a 
drift of dead bees. In their desperate attempts to es- 
eape, they had directed all their efforts against these two 
points of maximum sunlight, and even while I watched, 
at the southeast corner in the bright sun were one hun- 
dred and fifty mothers trying frantically to escape. It 
was with a feeling of satisfaction for the privilege of 
doing reparation for the wrongs done by my kind that 
I picked these up one by one, and liberated them. 
It seems strange, and yet it is logical, that these crea- 
tures could not find their way out. In the first place they 
had entered by chance, instead of direct quest, which 
would entail flight of orientation and the formation of 
memory images of the open door. Second, these are 
sun-loving creatures, following the greatest intensity of 
light, so it is easy to see how this factor would guide 
them in their efforts to escape. This failing is common 
not alone to Anthophora abrupta, but to other insects as 
well; several specimens each of Arotes amoenus, Cress. 
(R. A. Cushman), Megarhyssa lunatrix, Fab. (R. A. 
Cushman), and Tabanus lasiophthalmus, Macq., were 
also found there. A humming-bird had been trapped in 
just the same way, and its little carcass too lay in the 
sunniest corner, with its delicate bill thrust through the 
wiring, showing its frantic efforts to escape. 
An actual count of these dead bees gave me 18 males 
and 703 females. This, plus about 300 females then at 
work, shows the enormous proportions to which this 
population had grown. Furthermore there should be 
added to this total some 60 specimens from this group 
that had been lost in certain of my experiments. One 
wonders what would have happened to the bank in the 
