Fig. 1.— Life History 



ru,. t.. Ciliated Embryo. 



PLATE XI 



Fig. 6. 

 Amphistomum 



Fig. 9. — Gastrophilus Equ 

 b. 



Fig. 10.— Larva of 

 G. Equi. 



• \l,SiJLl.iis*vV Head 



Fig. 13.— Pentastomum T.enioides. 

 (Female.) 



Mouth. 



Fig. 11.— Burst Pupa 

 OF C. Equi. 



Anus. 



Fig. 12— Stomach of Horse 

 WITH Larv/e of G. Equi. 



