LIST OF ILLUSTRATIONS. XI 



PAGE 



fig. 



SO.— Traeheliastes of Cyprinidee 149 



31.— Lernea branohialis attached to Morrhua luacus 151 



32. — Young Guinea-worm, showing Mouth, Tail, and section of Body 153 



33. — Gregarinse of Nemertes 160 



34. — Sao with Psorospermiss from Sepia officinalis 160 



35. — Stylorhynchus oligacanthus from Dragon-fly 161 



36. — Horse-fly, showing also Anterior and Posterior Extremity ... 172 



37. — Macaco Worm 175 



38.— Melophagus of the Sheep 177 



39.— Lipoptena of Stag 177 



40.— Gordius aquaticus 178 



41. — Monostomum verrucosum — Sporocyst with Cercarise 191 



42.— Liver fluke 198 



43. — Monostomum mutabile 202 



44. — Ditto, ciliated Embryo and young Cercarisa 202 



45. — Cercaria of Amphistoma sub-clavatum 293 



46. — Sporocyst of Amphistoma sub-clavatum 203 



47.— Ditto, from Frog 205 



48. — Polystomum integerrimum 205 



49. — Cysticercus 206 



50. — Vesicular Worm 211 



51. — Tape-worm (Tcenia solium), showing Scolex and Proglottides 214 



52. — Ditto, B.ostellum and Suckers 214 



53. — Tasnia medio-canellata 219 



54. — Coonurus of Sheep, and Hydatid 223 



55. — Scolex of Tcenia echinoooccus 226 



56. — Taenia eohinococcus from the Pig 226 



57. — Ditto, from the Dog 227 



58. — Bothriocephalus latus 226 



59.— Scolex of ditto 227 



60.— Egg of ditto 227 



61. — Tsenia variabilis from Snipe 230 



62. — Ditto, more highly magnified 230 



63. — Tetrarhynchus appendioulatus from the Plaice 230 



61. — Hook of Linguatula 232 



65. — Linguatula, showing Hooks 232 



66 — Strongylus gigas, female 289 



67. — Asoaris lumbricoides ; also Head, Tail, and Body 240 



68. — Trichocephalus from Man 241 



