U. S. NATIONAL MUSEUM 



PROCEEDINGS, VOL. XXXI PL. VIII 



Fig". 9. 



Fiff. 10. 



It+Lsfli, 



R. ?^/i?,+/?2 n 





1st A + 2d A 2d M^ jj^ ^ jlfj^f^ +M, 



Fig. 11. 



Fig. 12. 



North American Digger Wasps. 



For explanation of plate see page 422. 



Proc. N. M. vol. xxxi— 06 28 



