wide, yellowish-brown, and with an operculum, or lid, at one end. 
The larger liver fluke of cattle, Fascioloides magna (Fasciola magna), 
has been reported but rarely from sheep. The eggs (Fig. 30) are 140 
to 160 microns long by 90 to 100 microns wide, brown, and operculated. 
Fig. 32. Schistosoma bovis. Egg. Enlarged. From Railliet, 1893, after Sonsino. 
The giant liver fluke, Fasciola gigantica, reported from the Philippines, 
has eggs 125 to 175 microns long by 60 to 100 microns wide. Dicrocoe- 
lium dendriticum (Dicrocoelium lanceatum), a fluke common in 
Europe, but not yet reported from the United States, has eggs (Fig. 31) 
Fig. 33. Gongylonema scutatum. Egg containing embryo. Enlarged. From Stiles, 1892. 
38 to 45 microns long by 22 to 30 microns wide. The conical 
amphistome, Paramphistomum cervi (Amphistoma conicum), occurs 
in the rumen and reticulum of cattle and other ruminants and is 
sometimes found in these animals in the United States. The eggs are 
36 
