33. — Gregarina3 of Nemertes ... 



34. — Sac with Psorospermiaj from Sepia officinalis ... 



35. — Stylorliynchus oligacan thus from Dragon-fly ... 



36. — Horse-fly, showing also Anterior and Posterior Extremity 



37. — Macaco Worm ... 



38. — Melophagus of the Sheep ... 



39. — Lipoptena of Stag ... ... ... 



40. — Gordius aquaticus 



41, — Monostomura verrucosum — Sporocyst with CercarijB ... 



42. — Liver fluko 



43. — Monostomum mutabile ... ... ... ... 



44. — Ditto, ciliated Embryo and young Cercariaj 



45. — Cercaria of Amphistoma sub-clavatum 



46. — Sporocyst of Amphistoma sub-clavatum 



47.— Ditto, from Frog 



48. — ^Polystomum integerrimum 



49.— Cysticercus 



,50.— Vesicular Worm 



51. — Tape-worm (Taenia solium), showing Scolex and Proglottides 



52. — Ditto, Kostellum and Suckers ... ... 



53. — Taenia medio-canellata , 



54. — Cocnurus of Sheep, and Hydatid 



55. — Scolex of Taenia echinococcus 



56. — Taenia echinococcus from the Pig 



57.— Ditto, from the Dog , 



58. — Bothriocephalus latus 



59.— Scolex of ditto 



60.— Egg of ditto , 



61. — Taenia variabilis from Snipe 



62.— Ditto, more highly magnified 



63. — Tetrarhynchus appendiculatus from the Plaice 



64.— Hook of Linguatula , 



65.— Linguatula, showing Hooks , 



66.— Strongylus gigas, female , 



67. — Ascaris lurabricoides ; also Head, Tail, and Body 



68. — Trichocephalus from Man , 



