Plate X, Figs, lU'-lJlb.— Drepanidntaenla anatina ana Urepanl- 

 dotaenla sinuosa. 

 [Pigs. 112-115. Drepanldotaenia anatina.] 



Fig. 112. Cysticercoid with anter.'or portion of the tail; rm.. 

 circular muscles; p., (third), parenchymatic layer; 

 h., fourth layer=neck; hr., posterior rostellum sac; 

 r., rostellum; ex., excretory system. After Schmidt, 

 1894, Taf. VI, Fig-. A. 



Flg.113. Cysticercoid with anterior portion of the tail; h., peri- 

 pheral layer; ku., cuticle; vli., muscular fibers; pchL, 

 paranchymatic layer; v]2., second layer of fibers; 

 pch2., internal paranchymatic layer (= neck) with 

 calcareous corpuscles (v); e., excretory apparatus; 

 pr., caudal appendage; J., nuclei of cells in the tail; 

 he, hooks of oncosphere. Zeiss 3, D. After Mrazek, 

 1S91, Tab. VI, fig. 19. 



Fig. 114. Isolated young hook. After Mrazek. 1891. Tab. VI. 

 fig. 21. 



Fig. 115. Ton hooks taken from the outline of cyst of cysticer- 

 coid, showing the hooks in position on the rostellum. 

 After Mrazek, 1891. Tab. VI, flg. 22. 



[Figs. 116-124.b. Drepanldotaenia sinuosa.] 



Fig. 116. A young worm, natural size. After Zeder. 1800. Tab. 



Ill, fig. 5. 

 F:g. 117. Distal end of a young worm enlarged, a. b, two knobs. 



After Zeder, ISOO. Tab. III. fig. 6. 

 Fig. 118. An adult worm, natural size. .A.fter Zeder, 1800, Tab. 



III. fig. 7, 

 Fig. 119, Short segments enlar.gi-d, Aftor Zetler. 1800. Tab. IIT. 



fig. 8. 

 Fig, 120. .'icolex enlarged: f. the long rostellum with hooks; c 



r, d d, suckers; a a. b b. neck. .\fti'r Zeder. 180O. 



Tab. Ill, fig. 9. 

 Fig. 121. Two large segments, enlarged: a a. b b. the "vermi- 

 form sacs;" c c. cirri; d, posterior corners of the 



segments. After Zeder, 1800. Tab. Ill, flg. 10. 

 F'ig. 122. Isolated eggs, enlarged. After Zeder. 1800, Tab, Til. 



fig. 11. 

 Fig. 12.'!. Tiostellum of Drer. sinuosa x240. After Krabbe. 1869, 



T.ib, VII, fig, 151, 



