Plate XIIL 



ir««. 1 Heifer infested with lung worms and liv.ii 

 Fig. 1— Heifer ^mie^^^^^ emaciation and edema. 



Pig. 2 — Oi-sopliagostoma C«- 

 lumbianum. 



(Cephalic extremity). 



a, Oral cavity. 



b, Oesophagus. 



c, Papillae. 



Pig. 3 — Oesopliagostoma 



lumbianum. ^ ^ ^ 



(Caudal extremity of male) 



a. Rib of caudal pouch. 



b. Web. 



c. Spiculae. 



Co- FiS' 4— Oesophaejostoma 



Co_ 



(Caudal extremity of fe- 

 male). 



a, Vulva. 



b, Anus, 



