510 



UNITED STATES NATIONAL MUSEUM BULLETIN 207 



Figures 849-852, — Female genitalia. 



849. Pyla fasciolalis (Hulst), with ovipositor 



omitted; 849a, female genitalia of a 

 variety from Gunnison County, Colo. 



850. Pyla impostor Heinrich, new species. 



851. Pyla viridisugusella Barnes and McDun- 



nough. 



852. Pylafusca (Haworth). 



851. viridisuffusetia 



852.fu3ca 



