on 

Pityophthorus minutissimus Zimm., fore leg; a; outeg 
border. (Greatly enlarged) 
Pityogenes undes, sp., antenna. (Greatly enlarged) 
Pterocyclon mali Fitch, antenna. (Greatly enlarged) 
Pityophthorus minutissimus Zimm., antenna. (Greatly 
- enlarged) : 
168 
