641 



Fig. 16. Segment mounted in glycerine and acetic acid, showing 

 genital organs; ag., genital pore; df.. vas deferens; 

 ov., ovary; rse., vesicula seminalis; t., testicles; v., 

 vagina. Greatly enlarged. Monticelli, fig. 12. 



Fig. 17. Armed cirrus, greatly enlarged. Monticelli, fig. 13. 



[Figs. 18-20. Amabilia lamelligera. Owen's (1835) original 

 figures.] 



Fig. 18. Adult strobila, natural size. Owen's fig. 21. 



Fig. 19. "Four segments of the same magnified." Owen's fig. 

 22. 



Fig. 20. "Longitudinal section of 3 posterior segments, show- 

 ing the ova collected near the base of the lemniscus." 

 Owen's fig. 23. 



Plate III, Figs, 21-36.— Dicranotaenia coronula, Dieranotaenia 

 aequail)ilis. Dicranotaenia furcigera, and Taenia conica. 



[Figs. 21-28. Dicranotaenia coronula: 21-24 after Krabbe. 1869; 

 25-28 after Mrazek, 1890.] 



Fig. 21. Anterior portflon of scolex with hooks. x240. After 



Krabbe, 1S69, Tab. VIII, fig. 216. Host: Domesticated 



duck. 

 Pig. 22. Isolated hook. x920. After Krabbe, 1869. Tab. VIII, fig. 



217. 

 Fig. 23. Isolated ovum with oncosphere. x240. After Krabbe. 



Tab. VIII, 1869, fig. 218. 

 Fig.24. Isolated hook. x920. After Krabbe, 1869, Tab. VIII, fig. 



219. From Coll. Siebnld. Host: European golden 



eye (Glaucionetta clangula). 



[Figs. 25-28. Cysticercoids from Cypris <ivum and C cnm- 



liressa. 



Fig. 25. Fully developed larva, showing the scolex invaginated 

 in the cyet; and the long tail with the 6 oncospherlc 

 hooks; ex.. excretory system: li.. cuticle; "X'U? "pores 

 of the cuticle" or ? muscles; hp., hypodermis; p.. 

 I arenchyma of neck, with calcareous corpuscles. 

 After Mrazek. 1890, Tab. V. fig. Tl. 



Fi.g. 26. Another view of a cysticercoid. After Mrazek. 1890. 

 Tab. V. fig. 12. 



Fig. 27. a-c. Isolated hooks. After Mrazek. 1890. Tab. V. fig. 

 13a-c. 



41-11 



