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102 ILLINOIS BIOLOGICAL MONOGRAPHS [320 



PLATE VII 



Fig. 24. Ovarian complex, Cydocodum cuneatum, anterior view. X92. 



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



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



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



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



Fig. 29. Drawing of wax reconstruction of anterior end of Cydocodum dongatum. X 108. 



