PLATE 8a. 



Fig. 1 — Spiroptera Microstoma, cepiialic ex- 

 tremity. 



'^ 2 — Spiroptera Microstoma, caudal extrem- 

 ity of male. 



" 3 — Spiroptera Megastoma, cephalic ex- 

 tremity. 



'i 4 — Filaria Cervina, female. 



PLATE 8b. 



Fig. 5 — Filaria Papillosa, cephalic extremity. 

 '' 6 — Filaria Papillosa, caudal extremity of 



male. 

 " 7 — Heterakis Papillosa. 

 ' ' 8 — Filaria Immitis, male. 



PLATE 9. 



Fig. 1 — Sclerostomum equinum, cephalic ex- 

 tremity, female. 



'^ 2 — Sclerostomum equinum, female natural 

 size. 



'^ 3 — Sclerostomum equinum, male, natural 

 size. 



*' 4 — Sclerostomum equinum, cephalic ex- 

 tremity, male. 



'' 5 — Sclerostomum equinum, caudal pouch, 

 male. 



" 6 — Sclerostomum endentatum, front view, 

 head, female. 



" 7 — Sclerostomum endentatum, female, nat- 

 ural size. 



'^ 8 — Sclerostomum endentatum, male, nat- 

 ural size. 



' ' 9 — Sclerostomum edentatum, front view, 

 mouth. 



'' 10 — Sclerostomum edentatum, caudal pouch, 

 male. 



*' 11 — Gyalocephalus capitatus, cephalic ex- 

 tremity, female. 



*' 12 — Gyalocephalus capitatus, female, nat- 

 ural size. 



" 13 — GyaloeepheUis capitatus, male, natural 

 size. 



xil 



Inserted 



between pages 



92 and &3 



Inserted 



between pages 



120 and 121 



