LIST OF ILLUSTRATIONS. 



Longitudinal diagrammatic representation of the three generative 

 ducts, ....... 



Male and female sexual organs of ( x 20), 



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



Mature joint of ( x 8), . 



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



Ovum of, after Schauinsland, with four embrj'onic cells and en- 

 veloping cells on the granular yoUc ( x 600), 

 Another ovum, with covering cells apposed to the embryonic 



body ( X 600), 

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

 Series of joints with double genital apertures, 

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

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



eirrhuB-pouch { x 10), 

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

 Transverse sections through the body of ( x 10) 

 Boihriocephalus liguloides — 

 Head of ( x 5), . 



Transverse section through the larval body of, 

 Boihriocephalus proboscideus. Excretory apparatus of, after Steudener 



(X32) 



Boihriocephalus salmonis, Embryonic development of, after Kolliker 



(X 300), ..... 

 Brain of a lamb with tracks of Ccenurus, 



Brood-capsule — ■ 



Closed and ruptured, showing their connection with the paren- 

 chymal layer ( x 40), 



Development of, and of the appended heads ( x 90), 



Metamorphosis of the, into bladders, after Naunyu ( x 90), 



With heads of Eohinocoocus in the interior ( x 40), 

 Cercaria — 



A free, ...... 



• A free and an encapsuled, the latter without tail, 



An encysted, without tail, 

 Cercomonas from the liver (after Lambl), 

 Oercomonas intestinalis (after Davaine), 

 Cercomonas musocc at different stages (after Stein), 

 Coccidia — 



Development of psorosperms in, . 



Enclosing psorosperms, 



From the human liver, 



From the intestine of the domestic mouse, 



ft '» 



From the kidneys of the garden snail, 

 From the liver, .... 

 OoccidiMm-nod-ale, Cross section of a, slightly enlarged, 

 Cocoidium oviforme — 



From the liver of the rabbit, 



(x550), . 

 Coenurus — 



Head and body of, in situ ( x 100), 



Heads of ( x 25), Digitized-by Microsoft® 



Passages of, in the brain of a lamb. 



170 

 365 

 362 

 381 



382 



282 

 368 

 373 

 159 



364 

 355 

 361 

 402 

 404 

 403 



155 



178 



81 



206 



325 

 328 

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 324 



50 

 21 and 22 



51 

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111 

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 100 

 113 

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 110 

 108 



102 

 106 



197 

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XIX 



PAGE 



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328 

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606 

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34 



73 



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