G44 



Fig. :.9. Isolated hook. After Feuertisen. ISGS. Tat. X. tig. 2. 

 ("T. setig«ra"=Drep. fasclata.) 



Fis?. 60. Cirrus pouch. After Feuerelsen, ISfi^. Taf. X. tig. 4. 

 fT. st>tigvra""=Drep. fasfiata.) 



Figs, fil-lil'. Cirrus from above and fiom tile s;*\ Aftor 

 Feuereisen. 1S6S. Figs. .'i. 6. c'V. seUgera'=Drop. 

 t'asciata.) 



Figs. 6:.-M. Isoh\ted segments: a. cirrus pouch: b. genital pore; 

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

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

 glajids; k, ovary; m. reoeptaculuni seminis; n, uterus 

 (?). After Feuereisen. 1S6S, Taf. X. tigs. 10-13. Feuer- 

 elsen has probably misinterpreted some of these 

 organs and they should be restudied. 



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



Fij,'. 67. BotJy of C>"clops agilis. containing a larval tapeworm. 



After Mrazek, 1S90. Tab. V. Ilg. 1. 

 Fig. 6S. Larval tapeworm, with enormously long tall, isolated 



from the crustacean. After M'l-azek. 1S90. Tab. V. 



flsr. 2. 

 Fig. 69. ( ? Side view.)After Mrazek. 1S90. Tab. V. tig. 3. 

 Fig. va Cj-stlcercoid, with anterior portion of the tail. After 



Mrazek, 1S90, Tab. V, fig. 5. 

 F.;gs.71-T2. Hooks from, rostelluml greatly magnified. After 



Mrazek. 1S90. Tab. Y. flgs. 7-8. 

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



Mrazek. 1S90. Tab. V, figs. 6 and 9a-b. 

 Fig. 76. After Mrazek. 1S90. Tab. V, flg. 10. 



riatc VII. Figs. 77-91.— Drepanidotaenia fasciata an<l Drei^ani- 

 dotaenia gracilis. 



[Figs. 77-79. Drepanidotaenia fasciuta.] 



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



Mrazek, 1S90. Tab. V .tig. 4. 

 Fig. 7S. Cysticercoid with extended head; the oncosplveric hooks 



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



V, flg. 1. 

 Fig. 79. Isolated hook from rostellum. .Vfter Mrazek. 1S91. 



Tab. V. fig. 2. 



[Figs. SO-91. Drepanidotaenia giacilis.] 

 Fig SO. -Taenia collo longlssinio." After Bloch. 1S72. Taf. III. 

 tig. s. Is perhaps identical with Drep. gracilis. 



