94 ILLINOIS BIOLOGICAL MONOGRAPHS [312 



PLATE III 



Fig. 6. CydocoelumwUsonifVexiX.rsS.vi&vr. X12. 

 Fig. 7. Cyclocoelum cuneatum, dorsal view. X 12. 

 Fig. 8. Cyclocoelum obscurum, ventral view. Xl7, 



