MORPHOLOGY OF CESTODES FROM POULTRY 43 



EXPLANATION OF PLATES 



Unless otherwise stated all drawing were made with the aid of a camera 

 lucida. 



Abbreviations 



&— bladder rj— rostellar sac 



c — cyst jy— shell gland 



ca — primitive cavity sr — seminal receptacle 



en — connection of bladder with cyst sv — seminal vesicle 



cp — cirrus pouch / — testes 



dex — dorsal excretory canal m — uterus 



ex — excretory ring in scolex v — vitelline duct 



— ovary va — vagina 



oh — onchospheric hooks vd—\2.% deferens 



01) — oviduct vex — ventral excretory canal 



r— rostellum y— yolk gland 



Plate V 



CHOANOTAENIA INFUNDIBULIFORMIS 



Fig. 1. Scolex much contracted. x40 



Fig. 2. Scolex normal extension. xl45 



Fig. 3. Longitudinal section of scolex, showing rostellum and rostellar sac. 



x425 



Fig. 4. Section of portion of sucker, showing booklets. x425 



Fig. 5. Section of portion of wall of scolex, showing booklets. x425 



Fig. 6. Longitudinal nerve tract, showing nerve cells with processes. x650 



Plate VI 



Fig. 7. A, B, C, D. Embryos from mature proglottid. x425 

 Fig. 8. Hooks from rostellum of adult. x425 



CYSTICERCUS OF CHOANOTAENIA INFUNDIBULIFORMIS 



Fig. 9. Hooks from rostellum of cysticercus. x42S 



Fig. 10. Section through scolex, showing rostellum with hooks and rostellar 



sac. x425 

 Fig. 11. Section through scolex and cyst, showing suckers with booklets, 



structure of cyst and primitive cavity between layers of cyst. x425 

 Fig. 12. Reconstruction of cysticercus with cyst and bladder or tail, showing 



scolex in cyst and onchospheric hooks in bladder. xl45 

 Fig. 13. Section of wall of bladder, showing histological structure and 



peritoneum of host. x42S 



