140 



LINGUATULA TiENIOIDES, Eudolphi. 



Plate XVII. 



Fig. 1. Male, natural size. (Cobbold.) 



Fig. 2. Female, natural size. (Cobbold.) 



Fig. 3. Egg with contained embryo. (Leuckart.) 



Fig. 4. Embryo escaped from egg-sbell. (Leuckart.) 



Fig. 5. Pupa nine weeks old: a, anus; 6, mouth. (Leuckart.) 



Fig. 6. Linguatula denticulatum. (Leuckart.) 



AMPHISTOMA CONICUM, Eudolphi. 



Fig. 7. Piece of the rumeu of a cow, showing the parasite attached between the 

 papillae by their large posterior sucker: a, au isolated individual, natural ■ 

 size. (R.iillet.) 



Fig. 8. Dorsal view, x2. (^Blanchard.) 



Fig. 9. Lateral view, x2. (Blanchard.) 



Fig. 10. Egg of an amphistoma, X80. (Cobbold.) 



DISTOMA LANCEOLATUM, Mehlis. 



Fig. 11. Ciliated embryo. (Leuckart.) 



Pig. 12. Early stage of development, in which there is no digestive apparatus. 

 (Ercolani.) 



Fig. 13. Another stage : a, a, groups of cells representing the future testicles. (Erco- 

 lani.) 



Fig. 14. Stage showing the testicles plainer, o, a; b, the rudimentary cirrhus pouch, 

 and c, the digestive system. (Ercolani.) 



Fig. 15. Adult, natural size figure by its side: a, pharynx; 6, oesophagus ; c, branches 

 of intestine ; d, ventral suckers ; e, e, testicles ; /,/, deferent canals ; g, cir^ 

 rhus pouch ; h, ovary; i, albumiuous glands ; k, uterus; I, vagina. 



