LIST OF ILLUSTRATIONS. IX 



Taenia balaniceps. Head 16 



Taenia balaniceps. Large and small hooks 16 



Taenia balaniceps. Small hooks 17 



Taenia balaniceps. Mature segment 17 



Taenia balaniceps. Gra\ad segment 17 



Taenia brauni. Anterior extremity 19 



Taenia brauni. Large hooks 19 



Taenia brauni. Median portion of strobila 19 



Taenia brauni. Small hooks 19 



Taenia brauni. Posterior portion of strobila 19 



Taenia brauni. Region of gentital pore 20 



Taenia brachysoma. Anterior extremity 21 



Taenia brachysoma. Large hook 21 



Taenia brachysoma. Entire strobila 21 



Taenia brachysoma. Small hooks 21 



Taenia brachysoma. Gravid segment 22 



Taenia pisiformis. Head viewed from the front 23 



Taenia pisiformis. Large and small hooks 23 



Taenia pisiformis. Large and small hooks as seen in a lateral view of the head ... 23 



Taenia pisiformis. Mature segment 25 



Taenia pisiformis. Gravid segment 26 



Taenia novella. Large and small hooks 27 



Taenia hydatigena. Large and small hooks 29 



Taenia hydatigena. Mature segment 30 



Taenia hydatigena. Gravid segment 31 



Taenia avis. Large and small hooks 33 



Taenia ovis. Mature segment 34 



Taenia ovis. Gravid segment 35 



Taenia knabbei. Large and small hooks 36 



Taenia knabbei. Entire strobila 37 



Taenia monostephanos. Hook enlarged 38 



Multiceps multiceps. Large and small hooks 41 



Multiceps multiceps. Entire strobila 42 



Multiceps multiceps. Mature segment 43 



Multiceps multiceps. Gravid segment 43 



Multiceps gaigeri. Large and small hooks 45 



Multiceps gaigeri. Yoimg strobila 46 



Multiceps gaigeri. Mature segment 47 



Multiceps gaigeri. Mature segment showing the occasional elongation of the 



vitellarium along the longitudinal axis of the strobila 48 



Multiceps serialis. Head viewed from the front 51 



Multiceps serialis. Large and small hooks 52 



Multiceps serialis. Mature segment 53 



Multiceps serialis. Gravid segment 54 



Echinococcus granulosus. Large and small hooks 56 



Echinococcus granulosus. Strobilate tapeworm 57 



Echinococcus granulosus. Frontal sections of mature segments, o, Ovarj'; s, 



shell-gland ; y, yolk-gland 57 



Mesocestoides lineatus. Portion of strobila, showing mature segments 60 



Mesocestoides lineatus. Mature segment 60 



Dipylidium oerleyi. Head 64 



Dipylidium oerleyi. Mature segment 64 



