THE CHEESE SKIPPER AS A PEST IX CUBED MEATS 



23 



Fig. 3. — A, Eggs of Piophila casei on loan ham ; B, Migrant larva? of Piophila 

 casci; C, Puparia of Piophila casei compared with puparia (on left) of Lucilia 

 sericaUi, one of the common blowflies sometimes found infesting cured meats 



