()44 



Fi^-. r.it. Isolati'fi hodk. After Feuorc-isen, 1868, Taf. X, fig. 2. 

 ("T. setig:era"=Drep. fasciata.) 



FiK. HO. (Mrrus pouch. After Feuereisen, 1S6^, Taf. X, tijj. 1. 

 ("T. setig-era"^Drep. fasciata.) 



Figs. 6l-fi2. Ciirus from above and from tlu- n'.dir. After 

 Feuerei-sen, 1868, Figs. r>, 6. ("T. setigera'"=:Drpp. 

 fasciata.) 



Figs. 6;!-t;6. Isolated segments: a, cirrus pouch; b, genital pore; 

 c, testicles; d, cirrus; e, vas deferens and vesicula 

 seminalis; g, vagina; h, genital cloaca; i, vitellogene 

 glands; k, ovary; m, receptaculum seminis; n, uterus 

 (?). After Feuereisen, 1S68, Taf. X, figs. 10-13. Feuer- 

 eisen has probably misintenpreted some of these 

 organs and they should be restudied. 



Plate VI, Figs. 67-76. — Drepanidotaenia fasciata. 



Fig. 67. Body of Cyclops agilis, containing a larval tapeworm. 



After Mrazek, 1890, Tab. V, fig. 1. 

 Fig. 68. Larval tapeworm, with enormously long tail, isolated 



from the crustacean. After M'razek, 1890, Tab. V, 



figr. 2. 

 Fig. 69. ( ? Side view.)After Mrazek, 1890, Tab. V, fig. 3. 

 Fig. 70. Cysticercoid, with anterior portion of the tail. After 



Mrazek, 1890, Tab. V, fig. 5. 

 Figs. 71-72. Hooks fromi rostellum], greatly magnified. After 



Mrazek, 1890, Tab. Y, figs. 7-8. 

 Figs. 73-75. Hooks as seen in position on the rostellum. After 



Mrazek, 1890, Tab. V, figs, 6 and 9a-b. 

 Fig. 76. After Mrazek, 1890, Tab. V, fig. 10. 



Plate VII, Figs. 77-91. — Drepanidotaenia fasciata and Drepani- 

 dotaenia gracilis. 



[Figs. 77-79. Drepanidotaenia fasi-iata.] 



Fig. 77. Cysticercoid with anterior portion of tail. After 



Mrazek, 1890, Tab. V ,fig. 4. 

 Fig. 78. Cysticercoid with extended head; the oncospheric hooks 



are still visible in the tail. After Mrazek, 1891. Tab. 



V, flg. 1. 

 Fig. 79. Isolated hook from lostellum. After Mrazek, 1891, 



Tab. V, fig. 2. 



[Figs. SO-91. Dieiianidofaenia giacilis.") 



Fig 80. "Taenia collo longi.ssimo." After Bloch. 1872, Taf. III. 

 fig. 3. Is perhaps identical with Drep. gracilis. 



