104 ILLINOIS BIOLOGICAL MONOGRAPHS (322 



PLATE VIII 

 All figures magnified 44 times 



Fig. 30. Ventral view of anterior end of Cydocoelum pseudomicrostomum. 



Fig. 31. Ventral view of anterior end of Cydocoelum brazilianum. 



Fig. 32. Dorsal view of anterior end of Cydocoelum mutabile. 



Fig. 33. Ventral view of anterior end of Cydocoelum leidyi. 



Fig. 34. Ventral view of anterior end of Cydocoelum elongatum. 



Fig. 35. Ventral view of anterior end, of Cydocoelum brazilianum, cirrus extruded. 



