Plate I. 



11.— Dorsal and lateral views of maggot of the chemj-fly. Natural size and much 



enlarged. 



Or It 11 m 



13.— Bhagoletis dngulata Loeio. The fly which is supposed to he the adult or parent 

 of the cherry maggot. The fly is shown natural size and enlarged, icith wings 

 spread and in the normal p)osition when the fly is at rest. The enlarged wing helow 

 illustrates a variation in the markings. 



