embryonated egg capsule of Fasciola hepatica.  So-named because the miracidium is fully formed and ready to emerge.  The operculum can be seen to the left.  400x

unembryonated egg capsule of F. hepatica, revealing less detail than the above view. This one is simply in an earlier stage of development.  400x
 


egg capsule with emerging miracidium of Fasciola hepatica.  400x