90 ILLINOIS BIOLOGICAL MONOGRAPHS [308 



PLATE I 



Fig. 1. Cyclocoelum leidyi, dorsal view. X12. 

 Fig, 2. Portion of the egg filled uterus of Cyclocoelum leidyi. X45. 



Fig. 3. Cyclocoelum mutabile (Zeder). Specimen No. 284 from Mehlis Collection, dorsal 

 view. XI 2. 



