102 ILLINOIS BIOLOGICAL MONOGRAPHS [320 



PLATE VII 



Fig. 24. Ovarian complex, Cydocoelum cunealum, anterior view. X92. 



Fig. 25. Frontal section, showing structure of body wall. X 435. 



Fig. 26. Ovarian complex, Haematolrephus similis, partial anterior view from above. X92. 



Fig. 27. Ovarian complex, Cydocoelum pseudomicrostomum, dorsal view. X92. 



Fig. 28. Frontal section, anterior end of Haematolrephus similis. X145. 



Fig. 29. Drawing of wax reconstruction of anterior end of Cydocoelum elongatum. X 108. 



