84 
Fig. 78.— Egg of the common liver fluke ( Fasciola hepatica) examined shortly after it tvas taken from the 
liver of a sheep; this is the same stage that is found in human feces: at one end is seen the lid or opercu- 
lum. o; near it is the segmenting ovtim : the rest of the space is occupied by yolk cells which serve as 
food : all are granular, but only three are thus drawn. X 680. (After Thomas. 1883, p. 281. fig. 1.) 
Fig. 79. — Egg of the common liver fluke containing a ciliated embrj’o (miracidium'* ready to hatch 
out; d, remains of food: e. cushion of jellv-like substance: /. borinar papilla: h, eve-spots; k, 
germinal cells. X 680. (After Thomas. 1883. p- 283. fig. 2.) 
Fig. 80. — Embrj-o of the common liver fluke (Fasciola hepatica) boring into a snail. X 370. (After 
Thomas. 1883. p. 285. fig. 1.) , t. 
Fig. 8T. — Egg of lancet fluke {Bicroccclium lanceatum) with contained embrvo. X 700. (After 
Leuckart, 1889. p. 379. fig. 171.) 
Fig. 82. — Egg of human blood fluke {Schistosoma hsematohium) with contained embryo, passed in the 
urine or in the feces. X 285. (After Looss, 1896. pi. 11. fig. 112. ) 
Fig. 83. — Egg of beef-measle tapeworm {Tsenia saginata) vcixh thick eggshell (embryophore), con- 
taining the six-hooked embryo (oncosphere) enlarged. (After Leuckart.) 
Fig. 84. — Eggs of pork-measle tapeworm (Tsenia solium): a, with primitive vitelline membrane: 6. 
without primitive vitelline membrane, but with striated embrvophore. X 450. (After Leuckart, 
1880, p. 667, fig. 297.) 
