Psyche, 1921. 



Vol. XXVITI, Plate VI. 



Wlieeler & Taylor — Vespa diabolica 



Fig. 1. Combs from nest of Vespa diabolica taken by the senior author at 

 Colebrool?, Conn. The white croses at the left mark tlie large cells occupied 

 by the larvae of the parasite, Vespa arctica. Natural size. 



Fig. 2. Typical nest of Vespa diabolica. about 2/5 natural size. 



