trally, the anterior margin of the segment contracting to a blunt point 
and the posterior margin displaying the fringe-like structure present 
on the posterior margin of every segment of the worm. 
Fig. 30. Fascioloides magna. Egg. Enlarged. From Stiles, 1894. 
There are few flukes known to occur in ruminants in the United 
States. The most important one is the common sheep liver fluke, 
Fig. 31. Dicrocoelium dendriticum. Egg. Enlarged. From Fiebiger, 
1912, after Csokor. 
Fasciola hepatica, which occurs in sheep, goats, cattle and swine. 
It is rarely present in horses and then usually in young animals. 
The eggs (Fig. 29) are 130 to 145 microns long by 70 to 90 microns 
35 
