KiS. l-^. Two isolated hooks. x!i2li. a, Irom a parasile in the 

 domesticated duek; b. fi-om a parasite in the mal- 

 lard. After Krabbe. 1869, Tab. VI 1, flg- 152a-b. 



Plate XI, F;g-s. 125-139.— Drepanidotaenia sinuosa. 



FiS. 125. Ses:ment with genital organs and extruded cirrus. 



.\35. After Krabbe. 1S69, Tab. Vll. fig. 153. 

 Fig. 126. Ltloch's original figure of "Taenia collar! nlgro," from 



the domesticated duck; possibly identical with Drip. 



sinuosa. After Hloch, 1TS2, Tat". IV, fig. H. 

 l"ig. 127. Anterior portion of llie same, enlarged. After Bloch, 



1TS2, Taf. IV, fig. 12. 

 Fig. 12S. Segments from the middle of the same, enlarged. 



After Bloch, 17S2, Taf. IV, fig. 13. 

 Fig. 129. Cirrus. x210. After Dujai-dln, 1845, PI. 9, Fig, D. 



Host: Goose. 

 Fig. 130. A Cyclops viridis containing 3 cysticercoids of Prep. 



sinuosa: vc, eggs. Zeiss 3. A. After Mrazek. 1S91. 



Tab. V, fig. 7. 

 Fig. 131. Isolated cysticercoid. to .-jhow the proportional sizes 



of the cyst and the tail. Zeiss 3. A. After Mrazek. 



1891, Tab. V, fig. 8. 

 Fig, 132. Isolated hook, greatly enlarged. Zeiss 3, F. After 



Mrazek, 1891, Tab. V. fig. 10. 

 Fig. 133a-c. Young stages of hooks, Zeiss :r. F. .\fter Mrazek. 



1891, Tab. V, fig. 11. 

 Fig. 134. Two isolated hooks of a cysticercoid which othei-wise 



coi-responds in fonm to Drep. sinuosa. The form and 



size (35 u) of these hooks resemble those of Drep. 



setigera. Zeiss 3, F. After Mrazek, 1S91. Tab. V. fig. 



12. 

 Fig. 135. Cysticercoid with anterior portion of tail, drawn from 



life. Zeiss 3, D. After Mrazek. 1891, Tab. V, fig. 9. 

 Fig, i:!6. Two isolateil hooks from fully developed scolex of 



cysticercoid. Zeiss 3, F. After llamann, 1SS9, Taf. 



1. tig. 9. 

 Fig. 137. The 10 hooks of the rostellum in position. Zeiss 3, F. 



After Hamann, 1SS9, Taf. I, fig. 10. 

 Fig. 138. Calcareous corpuscles from the parenchyma of the 



scolex. Zeiss 3, F. After Hamann, 1889. Taf. I. 



fig. 11. 

 Fig, i;!9. A hook of the oncosphere from the tail of ,a cysticer- 

 coid. After Hamann, 1S89. Taf. 1. fig, 12. 



