m 

 1 



: 



B. 3. Larva of Scaio- 

 a stercoraria L. From a 

 se-droppinor. Magnified, 

 anterior spiracle, 

 posterior spiracle, 

 hypostomal sclerite. 

 t. pharyngeal sclerite. 

 viseral trachea, 

 transverse commissure. 



PLATE XIX. 

 GERATOPHYLLUS GALLINUL^E, ETC. 



Fig. 1. The Grouse-Hy Ornithomyia lagopodi 

 Magnified about nine times. 



site p. 188.] 



FIG. 2. Side view of Ceralophyllus gallinulce. Dale. Highly magnified. 

 A, Male; B, Female drawn to the same scale and showing the relative 

 difference and size. 



