LIST OF ILLUSTRATIONS. XIX 



Longitudinal diagrammatic representation of the three generative 



ducts, . 363 694 



Male and female sexual organs of(x20), . . . 170 318 



Male generative organs of, seen from the dorsal surface ( x 20), 365 698 



Mature joint of ( x 8), . . . . . .362 693 



Ovum of, with yolk-cells and shell, . . . . 381 721 



Ovum of, after Schauinsland, with fotir embryonic cells and en- 

 veloping cells on the granular yolk ( x 600), . . 382 722 

 Another ovum, with covering cells apposed to the embryonic 



body (x 600), .... . . . .282 722 



Ripe joint of, with the uterine rosette ( x 6), . . 368 702 



Series of joints with double genital apertures, . . . 373 713 



Sexual organs of, from the ventral side ( x 20), . . . 159 306 

 Transverse section through the body of, at the level of the 



cirrhus-pouch ( x 10), ..... 364 695 



Transverse section through the head of a young ( x 55), . 355 678 



Transverse sections through the body of ( x 10) . . . 361 689 



Bothriocephalus liguloides . . .'. . . . 402 746 



Head of ( x 5), . . . . . .404 751 



Transverse section through the larval body of, . . . 403 749 



Bothriocephalus proboscideus, Excretory apparatus of, after Steudener 



(x 32), 155 301 



Bothriocephalus salmonis, Embryonic development of, after Kolliker 



( x 300), . 178 328 



Brain of a lamb with tracks of Ccenurus, . . . . 81 135 



..... 206 359 



Brood-capsule 



Closed and ruptured, showing their connection with the paren- 



chymal layer ( x 40), ..... 325 606 



Development of, and of the appended heads ( x 90), . . 328 610 



Metamorphosis of the, into bladders, after Naunyn ( x 90), . 332 621 



With heads of Echinococcus in the interior ( x 40), . . 324 605 



Cercaria 



A free, ........ 50 72 



A free and an encapsuled, the latter without tail, . 21 and 22 34 



An encysted, without tail, . . . . .51 73 



Cercomonas from the liver (after Lambl), . . . . 122 244 



Cercomonas intestinalis (after Davaine), . . . .121 242 



Cercomonas muscce at different stages (after Stein), . . . 117 237 



Coccidia 



Development of psorosperms in, . . . . . Ill 213 



Enclosing psorosperms, . . . . . .112 214 



From the human liver, . . . . . .114 223 



From the intestine of the domestic mouse, . . .100 197 



. , 113 219 



From the kidneys of the garden snail, . . . * 101 198 



From the liver, . . . . . . ; 110 210 



Coccldium-nodule, Cross section of a, slightly enlarged, . . 108 208 



Coccidium oviforme 



From the liver of the rabbit, . . . . .102 198 



(x 550), . . . . . . 106 204 



Ccenurus 



Head and body of, in situ ( x 100), '. . . .197 352 



Heads of ( x 25), . - . . .203 356 



Passages of, in the brain of a lamb, .... 181 340 



