54 
remained in the channels two males and one female, and one 
partly grown larva of Xylocopa. 
In addition to the above Aculeates, the sections of post con- 
tained large swarms of Pheidole megacephala, which had taken 
possession of the old channels of the Lithurgus. It was ob- 
served by Muir and Timberlake at the time the sections were 
split that Lithurgus apparently filled up the most of its old 
channels by the frass taken from those newly constructed, this 
frass even tightly packing up the interior of the old cocoons. 
From beneath the bark and in some of the channels were 
swarms of the Tenebrionid beetle (Alphitobius piceus); also 
one example of Oxydema fusiforme, also a number of small 
Roaches, one Centipede, and the larva of an Elaterid beetle. 
