5 
Page. 
29. Portion of a grass stalk with three encapsulated cercarise of the common 
liver fluke 26 
30. Isolated encysted cercaria of the common liver fluke 26 
31. Drawing from a microscopic preparation showing a hemorrhage in the 
parenchyma of the liver caused by the common liver fluke 27 
32. Drawing from a microscopic preparation showing the glandular hyper- 
plasia of the mucosa of a gall duct caused by the common liver fluke. 27 
33. Drawing from a microscopic preparation showing a fluke in the tissue 
of the liver 28 
34. Liinnxa iruncatida, natural size and enlarged 28 
35. Limnxa peregm, natural size and enlarged 28 
36. Limnsea liumilis, natural size and enlarged 28 
37. Lirnnsea oahuensis, natural size and enlarged 29 
38. Limnxa viator, natural size and enlarged 29 
39. Lancet fluke ( lanceatum), enlarged to show the anatomic 
characters 30 
40. Egg of lancet fluke with contained embryo 30 
41. Free embryo (miracidium) of the lancet fluke 30 
42. Rivolta’s original figure of OpisthorcMs felineus 31 
43. Ventral view of Opisthor elds felineus from a cat 32 
44. ~Egg ot Opisthorclns felineus 32 
45. Ventral view of Opistliorchis pseudofelineus from the cat 33 
46. OpisthorcMs noverca, natural size 34 
47. Ventral view of OpisthorcMs noverca, greatly enlarged to show the 
anatomy 34 
48. Eggs of Opistliorchis noverca 34 
49-62. The Asiatic liver fluke, Ojnsthorchis sinensis 
49. The Asiatic liver fluke, natural size 35 
50. The same, greatly enlarged to show the anatomy 35 
51-58. Eggs of same in different degrees of development 36 
59-60. Free embryos of same 36 
61. Section of left lobe of liver, showing lesions caused by Opistliorchis 
sinensis 37 
62. Section of right lobe of liver, showing lesions caused by Opistliorchis 
sinensis 38 
63-66. Busk’s intestinal fluke, Fasciolopsis huskii 
63. Fasciolopsis huskii, natural size 39 
64. The same, enlarged to show the anatomy 40 
65. Sagittal section of cephalic end of same 41 
66. Dorsal view of that portion of the cirrus-pouch which lies caudally of 
the acetabulum 42 
67. Ventral view of Fasciolopsis rathouisi, enlarged to show the anatomy . . 43 
68-71. The Egyptian intestinal fluke, Heterophyes heterophyes 
68. Ventral view, enlarged to show the anatomy 44 
69. A portion of the skin, showing the scale-like spines 45 
70. Chitinous rods of the genital ring 45 
71. Egg of Egyptian intestinal fluke 45 
72-78. The Asiatic amphistome, Gastrodiscus honiinis 
72. A portion of human intestine slit open, with specimens of Gastrodiscus 
honiinis 46 
73. Ventral view of the parasite, natural size 47 
74-75. Dorsal view of same 47 
