2» ILUNOIS BIOLOGICAL MONOGRAPHS [520 



EXPLANATION OF PLATE 



Fig. 93. Cyalhocephalus americanus, frontal section of ripe proglottis. 



Fig. 94. Botkrimonus inUrmedius, median sagittal section. 



Fig. 95. Bothriocephalus scorpii, median sagittal section, composite. The reference line is 



0.3mm. long. 

 Fig. 96. Bothriocephalus claviceps from Eupomotis gibbosus, median sagittal section. 

 Fig. 97. Bothriocephalus manubriformis, transection thru uterus opening. 



