Plate VII. 



t 



ri«. 1 — Spiroptera Strongylina 



a, Male. 



b, Female. 



Fig. 3 — Spiroptera Strougyli- 

 ua. 



(Caudal extremity of male. 

 Showing- 2 ppiculae and 

 wings, also papillae). 



Fig. 5 — .4scaris Mystax. 



a, Cephalic extremity. 



b. Caudal extremity. 



Figr. 2 — .Spir'.>ptera StroiiRyli- 

 iia. 



(Cephalic extremity show- 

 ing- mouth and oesopha- 

 gus). 



Fig. 4 — Spiroptera Strongyli- 

 ua. 



(Caudal extremity ol; fe- 

 male showing uterus filled 

 with eg-gs, vulva and anus). 



Fig. 7 — O.vyii 



(Female). 



a, Cephalic extremity 



b, Caudal extremity 



^fa.stigodcs. 



Pig, — Cephalic extremity of 

 Asearis Siii.s. 



(Front view). 



a, Oral opening. 



b, Lips. 



c, Cuticular surface surround- 



ing mouth. 



d, Portion of body. 



