(U2 



Fig. 2Sa-o. Oncosphrilc houks. After Mnizek, ISSn. Tab. V t\B 

 Ha-c. 



[Figs, 29-30. Dlcranotaenla ai»quabllls 1 



FIff, 29, Five hooks from the rostellum. x240. Aflir Krabbe. 

 1S69, Tab. VIII, Us. 212, fiom Rudolphl's orlslnal ma- 

 terial In the Berlin Museum, 



FlK. 30. Isolated hook from the rost.>lluni. x!>20. After Krabbe, 

 1S69, Tab. Vlll, IIk. 213, from speolmen in m-pliii's 

 collection. 



,, [Fips. 31-34. Dlcranotaenla furcigeii.) 



Fig. 31. Isolated hook from the rostellum. x20. After Dujar- 

 (iln. 1845. PI. IX. Fig. A. Host: Wild duck. 



Fig. 32. Isolated hook Pwm the rostellum. x920. After Krabbe, 

 1S69, Tab. VIII. fig. 206, from Nltzsch's original ma- 

 teiial. (See Rudolphl. 1819, p. 52S.) Host: Mallard. 



Fig. 3". Ovum with oncosphere. x240.. After Krabbe. 1S69, Tab. 

 YIII, fig. 207, from Nltzsch's original material. 



Fig. 34. Ten hooks on rostellum. x240. After Krabbe, 1S69, 

 Tab. VHI, tig. 205, from mate;ial collectfd In Iceland 

 In 1S63. Host: Mallard. 



Fig. 35-36. Taenia conica=? Dlcrnno>aenla furcigera. | 



Fig. 35. Natural size: a, head; b, rostellum; c, body. After 



MoUn, Tab. Vll, fig. 1. 

 Fig. :!6. Enlarged. After Molin, 1861, Tab, VII. ti.u. 2. 



riate IV, Figs. 37-53.— Dlcrn-notaenia sphonoides and Orepanl- 

 dotaenla lanceolatn, 



FlKS, :;7-42, Dlcranotaenla sph.noides. 



Fig. :!7. Strobila, natural size. After von I.instow. 1S72, Taf. 



III. tig. 9a. of Taenia cuneata. 

 Fig. 3S. Pcolex and anterior segments, enlarged. .\rti^r von 



Linstow. 1S72, Taf. Ill, flg. 9. of T. cuneata. 

 Fig, 39, Isolated hook fif>m the rostellum, .\fter von Llnstmv. 



1S72, Taf. Ill, flg. 10. T. cuneata. 

 Fig, 40. (.'ysticercold from an earthworm. Koritska. oe. 3. obj, 



4. After Grassi & Rov^lli, 1892. Tav. IV, flg, 12. 

 Fig, 41. Transverse section of the same: cav., "cavity of the 



gastrula:" els., cyst: par. est., external wall: par. Int.. 



internal wall; ros.. rdelhim: von., sucker. Koritska. 



..,-. :i. obj. 7. After iJrassi Rovelll, 1.S92. M-av, IV. ti.g. 



11, 



