[Vol. 87 
Figures 2-6. Fig. 2. Anterior view of head of Chelostoma campanularum, female. 
Fig. 3. Anterior view of head of Prochelostoma philadelphi, female. Fig. 4. Caudal 
view of metasomal tergum VII of P. philadelphi, male. Fig. 5. Caudal view of 
metasomal tergum VII of C. campanularum, male. Fig. 6. Caudal view of 
metasomal tergum VII of Chelostoma fuliginosum, male. 
Psyche 
