14 CIRCULAR 3 9 2, IT. S. DEPARTMENT OF AGRICULTURE 



Figure 10. — Symptoms of European foulbrood : A, Ventral view of an extended larva re- 

 cently dead of European foulbrood ; B, extended larva partly decayed ; C, scale of an ex- 

 tended larva ; D, recently dead larva, and E and F, scales of dead larvae irregularly 

 twisted ; O, oral view of recently dead extended larva ; H, partially decayed larva ; /, 

 scale of larva that died after straightening out. 



