The Ecology of a Sheltered Clay Bank 195 
occasionally found about the porch above the bank. Their 
actual activity was observed only once, on October 12, 
when one was intermittently feeding upon a large, hairy 
caterpillar caught in its web. I feel confident, however, 
that, since they are night prowlers, they participated 
more fully in the life of the community. Elsewhere I 
have found this species feeding upon a wasp (Odynerus 
anormis Say). 
Résumé of Pioneers. 
To summarize, then, the five years’ work at the clay 
bank gave us ag pioneers, those which actually opened 
the way for others, the eighteen species listed below. It 
is interesting to note that six of this number were soli- 
tary bees, seven were wasps, and the remaining five be- 
longed to as many different orders. 
Carpenter bee. Xylocopa virginica. 
Mining bee. Anthophora abrupta. 
Mining bee. Entechnia taurea. 
Mining bee. Anthophora raut. 
Halictus bee. Halictus zephyrus. 
Small carpenter bee. Ceratina calcarata. 
Mining wasp. Ancistrocerus fulvipes. 
Eumenid wasp. Ancistrocerus unifasciatus. 
Spider wasp. Episyron biguttatus. 
Pipe-organ dauber. Trypoxylon politum. 
Mud-dauber. Sceliphron caementarium. 
Larrid-wasp. Tachysphex terminatus. 
Paper wasp. Polistes pallipes. 
Devils horse, Stagmomantis carolina. 
Stick-bug. Emesa brevipennis. 
Ant. Crematogaster lineolata. 
