44 JOHN E. GUTBERLET 



Plate VII 



Fig. 14. Choanotaenia mfundibuliformis. Reconstruction of mature pro- 

 glottid, showing reproductive organs, excretory vessels, and nerve. 

 xl45 



Fig. 15. C. infundibuliformis. Reconstruction of cirrus pouch showing 

 cirrus and vas deferens, also part of vagina in connection with 

 cloaca. x310 



Fig. 16. C. infundibuliformis. Reconstruction of female reproductive or- 

 gans, showing part of ovary, yolk gland, shell gland, oviduct, 

 vitelline duct, uterus, and connection of ducts with uterus and 

 seminal receptacle. x310 



Fig. 17. Davainea cesticillus. Reconstruction of mature proglottid, showing 

 reproductive organs and excretory vessels. xl45 



Fig. 18. Hymenolepis carioca. Reconstruction of mature proglottids, show- 

 ing reproductive organs from ventral view. xl4S 



Plate VIII 



Fig. 19. Scolex of Davainea tetragona. xl45 •» 



Fig. 20. Hooks from rostellum of D. tetragona. x425 



Fig. 21. Hooks from suckers of D. tetragona. x425 



Fig. 22. Scolex of Davainea echinobothrida. xl45 



Fig. 23. Hooks from rostellum of D. echinobothrida. x42S 



Fig. 24. Hooks from suckers of D. echinobothrida. x425 



Fig. 25. Embryos of D. echinobothrida, showing capsule and fibrous gel- 

 atinous mass in which it is embedded. x42S 



Fig. 26. Scolex of Hymenolepis carioca, after Ransom. 



Fig. 27. A, B, C, D. Embryos of Hymenolepis carioca, showing enveloping 

 membranes. x425 



Fig. 28. Scolex of Davainea cesticillus. Free-hand drawing of living spec- 

 imen well extended, showing rostellum. 



Fig. 29. Hooks from rostellum of D. cesticillus. x425 



Fig. 30. A, B, C, D. Embiyos of D. cesticillus, showing enveloping mem- 

 branes. x425 



