222 ILUNOIS BIOLOGICAL MONOGRAPHS [510 



EXPLANATION OF PLATE 



Fig. 65. Eaplohothrium globvliforme, transection thru primary scolex. 



Fig. 66. Eaplohothrium globidiforme, transection thru the ganglionic mass behind the. pro- 



boscides. The reference line is 0.1mm. long. 

 Fig. 67. Haplobothrium glohdiforme, transection thru a single proboscis bulb. 

 Fig. 68. Marsipomeira hastaia, toto of ripe proglottis. 

 Fig. 69. Botkriocephalus cuspidaius, transection thru an anterior segment. 

 Fig. 70. Botkriocephalus cuspidatus, toto of ripe proglottides, posterior in deeper optical 



section. 



