G53 



Fig. 1'07. Frontal section of side of segment, through the cirrus 

 l)ouch and vagina: ci., cirrus; va., vagina: sg.. geni- 

 tal sinus; sb., cells of subcuticula. After Crety, 

 1890, fig. 12. 



Fig. JOS. Longitudinal section through egg sac: m, external cap- 

 sule; c, granular content; ov., ovum. After Crety, 

 1890, fig. 13. 



Fig. 2(19. Scolex of "T. pluriuncinata." x ca. 50. a, hook from 

 rostellum; b, hook from sucker; pr., rostellum; v, 

 sucker; s, head; c, neck. After Crety, 1890, fig. 4. 



Fig. 210. Ovum of same. After Crety, 1890, fig. 7. 



Fig. 211. Frontal section of segment of same: cl., ventral canal; 

 ct., transversecanal; ur., egg sacs. After Crety, 1890, 

 fig. 14. 



Plate XVir, Figs. 212-227.— Davainoa cesticillus. Davainea 

 echinobothrida, and Davainea tetagona. 



[Figs. 212-216. Davainea cesticillus."] 



Fig. 212. Strobila. After Molin, 1861, PI. VI, fig. 10. 



Fig. 213. Anterior portion of same, and two posterior segments 

 (middle portion of worm ff, omitted): A, head; b, 

 ring surrounding the rostellum; c, rostellum; d, 

 sucker; E, anterior portion of segmented body; ff, 

 dotted line of omitted segnfients; GG, two posteiror 

 segments; h, extruded pen's; i, vulva. After Molin. 

 1861, PI. VI, fig. 11. 



Fig. 214. Hook from rostellum of Dujardin's "T. infundibuli- 

 formis Goeze." x210. After Dujardin, 1845. PI. IX. 

 Fig. H. 2. 



Fig. 21.'. Hook from rostellum. x920. After Krabbe. 1S69. Tab. 

 X, fig. 293. 



Fig. 21 fi. Ovum. x24n. After Krabbe. 1S69, Tab. X. fig. 294. 



[Figs. 217-21S. Davain-''a Pcbinobothrida. | 



P'ig. 217. Strobila. natural size. After Megn'.n. 1SS1A. PI. V. 



fig. 1. 

 Fig. 21Sa-d. Head/ with appendages: a, head an'd neck; b. 

 armature of suckers; c, hook from sucker: d. hook 

 rostellum. After Megnln, 18S1A, PI. V, fig. 2. 



[Figs. 219-227. Davainea tetragona.") 



Fig. 219. Head D, with rostellum (a) and suckers <r). followed 

 by neck (K). Enlarged. After Molin. 1861. Tav. VIT. 

 fig. 6. 



